KymcoForum.com
Scooters - 50cc => zx50 => Topic started by: naughty lee on December 18, 2012, 08:32:55 AM
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Hi guys,
( thread renamed, follow instructions and your standard scooter will hit 50 mph minimum)
Original thread.
I'm in the uk and I've recently got hold of a zx50 super fever.
Gotta say, it's a reliable little thing for a 1999 model, I've had it to bits and reassembled it and I'm pleased with the build quality.
Recently though, the drive belt snapped. Prior to this the machine was hitting 40mph no problems.
Upon looking inside, I noticed the inner variator was badly worn, so I ordered a complete front variator and belt from wemoto.
The kit turned up with 8.5g rollers (originals were 7g)
During reassembly I noticed that the belt was too long. The bike runs but struggles to hit 25mph.
What I need are some definitive answers.
Aside from the standard bando belt, what is readily available in the uk as a direct replacement?
Secondly, the replacement boss is 38mm, what is the best proven length for max speed on the zx50?
I won't ask about roller weights as these differ so much dependant on machine and rider weight
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my stock zx50 hit 45 mph .. with no mods just unrestricted cdi .. and washer out of exhaust .. u have to see if u have the af18 engine ..
im not sure you do .. thats why your getting wrong parts ... also you can find parts by looking up honda dio parts .. see what ur engine code is first ..
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Where do I find this info ?
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Where do I find this info ?
i looked at my engine code on engine and found i have the dio af18 engine ..
But i think you do cause they made af18 - 1999 - 2006 i think ..
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Varitor for cheap .... http://www.ebay.com/itm/RACE-VARIATOR-for-KYMCO-ZX50-ZX-Fever-50-Fever-II-50-/400202207211?pt=Motorcycles_Parts_Accessories&hash=item5d2de90feb&vxp=mtr (http://www.ebay.com/itm/RACE-VARIATOR-for-KYMCO-ZX50-ZX-Fever-50-Fever-II-50-/400202207211?pt=Motorcycles_Parts_Accessories&hash=item5d2de90feb&vxp=mtr)
Belt ... Measure it for sure cause google says u have a different belt than i do a 2004 ..
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Ok, I've ground the boss down to 34 mm as per the info on here. The outer variator now fouls the starter bendix, now I need another boss or some shims, the 8.5g rollers were too heavy, back down to 7g now
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Bit of an update, I acquired another variator yesterday, I weighed it with the sliders and compared it to the original kymco part. This new bit was within a gramme of the original. I fitted it with the new outer variator. It fouled the starter bendix with a 34 mm boss. I fitted the original kymco outer variator which has a lip on the inside. This lip gives just the right amount of clearance so that the teeth on the outer variator miss the teeth on the starter bendix once the engine is running.
Some ink from a permanent marker pen was put on the inner variator and the bike was tested for speed. An indicated 43 mph. More like it. When the machine is idling I can just hear the outer variator " chinking" occasionally against the bendix teeth.
A strip down of the drive system showed all the ink was removed from the inner variator.
So now what?
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Today I've got hold of another boss. The plan is to grind it down to 33mm, it's likely that this will foul the bendix, so it will be tested tomorrow without the bendix fitted.
If there is an improvement with speed, the starter teeth on the outer variator will be filed down by 1 mm so that they do not foul the bendix. This will give maximum speed whilst keeping the electric start facility.
So what have I learnt so far?
If the outer variator on your zx50 is not the original part, then only skim your boss down to 36mm if you want to keep your starter motor in the equasion
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Right, the spare boss was skimmed down to 33 mm and the machine was reassembled. At this length the kick start spigot will not reach the mating face on the outer variator, I haven't binned the boss though as I have another plan for later down the line. Messed about trying different weights, seems that 7.5 gramme rollers are giving the best accelleration whilst still allowing the bike to max out at 43 mph.. More to follow
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A phone call from my local scooter dealer gave me the news I've been waiting for... The correct belt has arrived. ( genuine part ) I've not measured it but it was clearly shorter than the 720 mm one that was fitted, it's also thinner whilst remaing around 17mm in width.
Another speed test but unfortunately it was raining heavily. Nonetheless, the acceleration was down a little but the pull was constant and linear. The bike indicated a solid 50 mph and I was convinced there was a little bit more. Unfortunately a speed hump meant I had to scrub some speed off to avoid bring catapulted into Scotland !
More experimenting tomorrow on a longer road with a slight decline.
This little scooter has been fun to mess about with and hasn't cost the earth.
The mods are simple and cost either nothing, or pennies
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Good results today, the particular stretch of road identified is a long valley with the south bound direction giving the longer run, unfortunately strong head winds limited the south run but the north run gave a surprise.... An indicated 61 mph!! Remember, this little ped has had NO engine or exhaust modifications. This speed has been achieved just thru mods to the boss, the ecu and the rollers !
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Lighter rollers were fitted last night, weights to be confirmed but are around 7g, my son took the scoot out for a rip and told me that it now hits an indicated 57 mph on the flat.
I think it's safe to say we are now at the last few drops of speed on the budget modification list.
Race variators seem a bit steeply priced, I need some reassurance that another 5 mph is possible before buying one, the same for an aftermarket exhaust.
Total mods currently
Ecu green wire splice
Aftermarket drive belt replaced with original kymco bando belt £30 ouch
Front drive boss filed down to 34mm
Roller bearings 7 grammes each
Mods to do
Replace stock exhaust
Drill extra hole into the air box
Maybe mods to do
Fit a race variator
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I think but dont quote me you should have an AF05e derivative in yours and not the dio derived version. You should have a Kymco zx50 super fever if its a 99, and 03-05 is a zx50 super fever II/2. Ive only seen 2 of the older super fevers and didnt look at the engine because I wasnt into honda clones at the time.
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Can you post a picture of your scooter, I love when people live in europe and have cool scooters we dont have over in the US. Also does the exhaust come out of your engine at an angle or straight out? That will tell you what cylinder you have. Angled is AF05e and straight is AF16/18.
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(http://i294.photobucket.com/albums/mm114/naughtyleelee/40D0ABDC-744B-4819-967C-7064572AD419-478-0000004E1C896DD6.jpg)
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It was purple originally, the paint and stickering was done in my garage this summer
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Nice bike!
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Thanks, it took some doing to get it looking like that
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Use a Jasil (top racing) variator, and a Scorpion pipe. Cynthia, at Scooter Alley in Hawaii will hook you up. The var is 99.00 usd, and the pipe is 250.00. These will give you an honest 10mph gain.
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I can't believe how well this thing goes. If the variator is changed, will I need to change the v belt as well ?
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..sweet looking Monster Z lee...
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I read on her that someone wondered about the zx... It's the 1st gen zx not the super fever...
... BUT WOW, look at the wheels. Those aren't regular Kymco wheels.. Those are little 10" honda metro type..
Not real sure about that particular engine... I THINK it's the AF style...
I know my '04 is the AF engine
Good looking scoot by the way.... ;)
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...woww...didnt see th wheels..but yeah...i cant ride a 10" wheel scoot...
..too top-heavy, i reckon....
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And the fender.... It looks like the gy6 "peace sports" fender...(rims kinda do to, but i was trying to save face by using Honda....Lol)
I think Sids was a 1st gen. ZX.... but even his had the "kymco wheels" and regular front fender....
??? ??? ??? ... Interesting..
FRom the angle it APPEARS to be the AF style engine...Lol
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..yup...i see that now, and it opens my eyes to the zx...
..i often wondered why some of them lookd so different...
..almost a 50-50 in pics...
..i still learning...
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...remember thisn??
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.yup...i see that now, and it opens my eyes to the zx...
You hush...Lol No comparision to a gy6...Lol
An elit or spree?...maybe...Lol
Now mine with the s9 suspension, bigger tires(120-130)...(oem is 110-120) handles like a dream
..... Well she did....Lol.... STILL SITTING....Covered....Waiting...... :'( ... :-X
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...remember thisn??
I do.. I do... Ahhhh, the old days....
I gotta pic of Shaka's too...Lol
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I gotta pic of Shaka's too...Lol
...me too!!...
..somewhere.....
..we were all learning some good sh** back then...
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Hell yes we were... It was THE SHIZNIT for shizzle my nizzle.....ROFLMMFAO......
::) ::) ::) ::) ::)
sh**, I still gotta learn.... I think....
I'm close tho....lOl
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OMG....
Oh yeah.....
He cam after the good days tho...Lmao...
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It is a super fever 1, the 03-05 are super fever 2.
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I'm after a sports exhaust for this scoot now. Will any of the Honda pipes fit ?
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Damn! That's a '99? :o
Thing looks brand new. Take that front fender off. Looks better that way ;D
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I'm after a sports exhaust for this scoot now. Will any of the Honda pipes fit ?
You have to figure out which engine yours is, look on the kicker side and see if you can find an engine code. the super fever 2 uses a sc10a, if it says that you can use any pipe for 94+ honda elite/dios. If its the other af05e engine your limited to choices and the leo vice sp3 is the only one thats readily available.
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Damn! That's a '99? :o
Thing looks brand new. Take that front fender off. Looks better that way ;D
the annual safety check in the uk states the front fender must be fitted. I'll check the engine number tomorrow
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Lol thankfully I've just invested in the Isle of Man !
Have a look on YouTube. This island has no speed limit ( except in the villages )
Perfect for us bikers ;-)
I've cured the starter bendix chinking on the outer variator noise.
A small spring coated in grease pushed into the outer casing bendix locator hole ( yep, just made that name up) and now it idles nice n quiet ;-)
Might try another half a mill off the boss next?
The ped now hits 53-57 mph on the flat dependant upon wind strength. 61 mph downhill
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At 61 youre almost at the stock gearings limit. Stock gearing 64 is my top at near 13k rpms on a ported polini corsa cylinder kit and a polini variator/malossi ramp with the white "reinforced" malossi contra spring. You really feel like youre flying at 60 on them. Be careful tho as your brakes are seriously not up for quick stopping after 40.
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I know we are close to the last few drops. I'm gonna try a 33 mm boss with a .5 mill shim, hopefully the spring will prevent the bendix from fouling the outer variator. Scoot currently has 7g rollers fitted. Need this damned snow to clear so that experiments can progress !
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Ok, my son managed to save some money and tonight we fitted a tecnigas next r exhaust. Surprisingly quiet for a sports exhaust, or it was until I pulled the wadding out of the end can.
This has changed the characteristics of the bikes pull. Looks like there's more experimenting with variator rollers. Will try going lighter and going heavier. Will keep u all posted.
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It's hit 63 mph today, lighter rollers have been fitted which have improved its take off. I've picked up a new plug for it which is going in tomorrow. From here we can work out if any carb adjustments need making.. Will keep u guys posted ;)
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Ok, So I fitted a new spark plug yesterday and ran the bike for about five miles. Inspected the plug, it looked the same as when it went in, So it's lean. I've dropped it in at a local scooter shop because of time restraints and asked the chap there to change the jets and rake the carb out. Will update once the works done
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I got the bike back from the ped shop with five jet sizes over.
Ran it on a new plug, it was still lean, up to six sizes over, still lean. The guy in the shop gave me some jets. I fitted the 7 th, the bike was flying but still a tad lean. gone up another jet size, now 8 sizes over stock. The plug is starting to brown off. Re set the air mixture and fitted an iridium plug. 60 mph on the flat. Gonna warm it up tomorrow, pour some redex onto the piston and take it on a downhill challenge, see if it ll hit 65 mph
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Snow in march! Wtf ?
Testing postponed. Bike now has 6g rollers fitted. Will continue testing when weather improves
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We seem to have hit a barrier now, I think the 6 g rollers have lost us a little top end. The bike still indicates 60 mph but we have seen 63 mph in the past. I'm looking at mixing in 3x 6.5 gramme rollers into the mix and probably calling it a day... Or should I buy a race variator ? Lol
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Use a Jasil (top racing) variator, and a Scorpion pipe. Cynthia, at Scooter Alley in Hawaii will hook you up. The var is 99.00 usd, and the pipe is 250.00. These will give you an honest 10mph gain.
Is this still the varistor/ pipe combo to look for?
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Apparently so. I've found the jasil variator for sale in the us but the seller will not post to the uk.
I've got contacts in the us who could act as a middle man. £52. Is it worth it though ?
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Im in the US just new to the scene, may be I could help somehow. Who are the US vendors?
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Colorado powersports eBay seller
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Thanks, I also found http://www.scrappydogscooters.com/Honda_Dio_Elite_Daelim.html (http://www.scrappydogscooters.com/Honda_Dio_Elite_Daelim.html) It looks like you and batman are pretty much the only people posting these days. I wouldn't of gotten the scoot if I didnt find this forum
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you and batman are pretty much the only people posting these days.
Somebody mentioned my name...lol ;)
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Thanks, I also found http://www.scrappydogscooters.com/Honda_Dio_Elite_Daelim.html (http://www.scrappydogscooters.com/Honda_Dio_Elite_Daelim.html) It looks like you and batman are pretty much the only people posting these days. I wouldn't of gotten the scoot if I didnt find this forum
Ahh! A good little find. Many thanks.
How are you getting on with your scoot ?
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The Jasil is good but not better than the Polini variator and Malossi ramp plate combo. You should be able to get the Polini in the UK or near by. The Scorpion is a great pipe but expensive, not arrow pipe expensive but a bit much, if Cynthia wont ship it to you I think I knew somewhere in Australia that carried them for 240 AUD which is like 250 USD and Im sure theyll ship to the UK.
Hows the weather over there?
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The weather is sh!t over here in the uk, it's ok though, because that's how we like it.
Summertime is coming though (70-90 degree F) which is about as good as it gets.
250 aud is a bit much, this little scoot only cost £180, ok it was a bit of a dog, but me and my son have had fun sorting it out.
It is unquestionably the quickest in the area, hitting 55mph on the flat with the rev limiter ON.
The green wire splice has been made into a switch. Unless we are speed testing it stays in its rev limited guise.
It's final test is in May when it goes over to the Isle of Man.
The plan is to ride it over the mountain, stop at Keppel gate, lean the mixture off a tad, override the rev limiter with the switch, then hammer it down to Creg ny baa.
It's a good hill, if it breaks the 65 mph mark, it will be crowned with some dynojet stickers and ( more importantly ) a set of "Manx legs" on the front.
Provided it doesn't blow up, the limiter will then go back on and the mixture richened a quarter turn. Any videos can then be uploaded onto YouTube ;-)
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hi lee when in may are you goin to the isle of man coz me and 3 mates are going on the 10th of may till the 12th if i can get my zx running right lol
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Ahh! A good little find. Many thanks.
How are you getting on with your scoot ?
Just knocked the dust off so far, called a few shops including this one that I posted. They said that the cdi there doesnt work with the zx50, looks like I will hack up the stock cdi.
What about this kit: http://www.monsterscooterparts.com/kymco-ncygy6-50ccperformancetransmissionkit.html (http://www.monsterscooterparts.com/kymco-ncygy6-50ccperformancetransmissionkit.html) The aftermarket for this scooter is a bit confusing, it seems that certain parts designed for other scoots will work, but I am not clear as to which parts from other scooters work for my zx50.
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hi lee when in may are you goin to the isle of man coz me and 3 mates are going on the 10th of may till the 12th if i can get my zx running right lol
We are heading over on the 24th of May, I'm staying all of practice and race week but my son is heading home after ten days. It's just over a hundred miles to Heysham from Stockton on tees. What part of the country are you from ?
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Just knocked the dust off so far, called a few shops including this one that I posted. They said that the cdi there doesnt work with the zx50, looks like I will hack up the stock cdi.
What about this kit: http://www.monsterscooterparts.com/kymco-ncygy6-50ccperformancetransmissionkit.html (http://www.monsterscooterparts.com/kymco-ncygy6-50ccperformancetransmissionkit.html) The aftermarket for this scooter is a bit confusing, it seems that certain parts designed for other scoots will work, but I am not clear as to which parts from other scooters work for my zx50.
Your scoot should hit 50 mph without all that guff. Just trim the boss, check the belt is the correct one and lighten the rollers !
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I think I had posted pics of the cdi mod... Nuttin to it really.
I can post if needed... I have the "Suitai" cdi on mine. A bit more expensive but they were custom at one point and now of course SA is selling the same cdi.....
lee, you shortened a zx boss?? Wow, they are short anyway... 36mm(normally boss's are 38+mm.. Of course the z is a breed apart....
(I did get the boss shaved on Black Widow down to 37.9mm to give a tad of aid)
I had done several other mods and only was hitting 51-52 on the oem cylinder on the zx, then she became a dam Beast.... ;D ;)
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Yes, grind it down to 34mm but no shorter, otherwise the kick start spigot isn't long enough to strike its mating face
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Jasil variator with boss is on the way,would this cdi work if i muff up the wire splice job? I'm so interested in the zx50 i stopped with the ruckus mods a bit. I'm starting to think the ruckus needs to transform into a two stroke
http://pages.ebay.com/motors/link/?nav=item.view&id=280627819861 (http://pages.ebay.com/motors/link/?nav=item.view&id=280627819861)
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Its not a direct swap for that cdi. The ones for the gy6 are the correct pin style. You can also do what I did and use the old cdi harness part to mate it to that cdi.
(http://i1305.photobucket.com/albums/s560/lovemy2strokes/IMAG1270_zpsea5ce347.jpg)
(http://i1305.photobucket.com/albums/s560/lovemy2strokes/IMAG1266_zps834d09fe.jpg)
(http://i1305.photobucket.com/albums/s560/lovemy2strokes/IMAG1267_zpsacf4a17c.jpg)
(http://i1305.photobucket.com/albums/s560/lovemy2strokes/IMAG1268_zps287b62fb.jpg)
(http://i1305.photobucket.com/albums/s560/lovemy2strokes/IMAG1279_zpsf0186fbc.jpg)
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Is this still the varistor/ pipe combo to look for?
Did you buy the variator yet?
I live near Colorado Powersports and may buy one for myself.
They sell (sold) the jasil variator on Ebay for $80 shipped, so I might be able to negotiate a lil better to offset the shipping to the UK
pm me if interested.
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I'm in the US also, and yes I ordered through them. I appreciate the offer though.
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Well! We've had a drive failure. Turns out we has the wrong sized rollers in the variator. One jammed and caused a bit of a mess. Damaged sliders and the variator drive bush. Another variator was fitted but the bike lost 19 mph worth of speed as a result.
Fortunately we managed to press the (now oval shaped) bush out of the fast variator. a good friend machined me a replacement bush. It took around two hours on the lathe to make the part, but its back together again.
A speed test saw an indicated 63 mph ( down hill of course )
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had anyone here current actually run the jasil varistor? I got the cvt cover off after a battle, then cleaned it only to realize the variator will not fit. So pissed off with the kymco at the moment that Ive had to walk away
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I take it the variator fits, but the cover won't go back on ?
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It will clear the gear jagged part of the crankshaft just barely super tight, but won't go beyond that. This is an issue of millimeters, maybe it was made for the earlier kymco?
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I have the kysc10. The boss didnt appear restricted is the difference subtle?
Dies anyone have a pic of a restricted next to an unrestricted?
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It will clear the gear jagged part of the crankshaft just barely super tight, but won't go beyond that. This is an issue of millimeters, maybe it was made for the earlier kymco?
How much did you pay for it ?
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$80 usd from colorado powersports on ebay
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Nightmare. Have you been back in touch with them ?
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ya. They are going to let me return it. My stock drive boss doesnt look restricted. Im more bummed about the variator not working than worried about the return. My scoot is a 2006, maybe this variator is intended for the earlier model
Nightmare. Have you been back in touch with them ?
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I would have tried your stock boss, inside the new variator.
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The jasil works fine with out using the supplied boss and using the stock one. Ive never used the supplied boss because its 4 mm taller i think if I remember right. Polini is a better variator.
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I will try that, still have not sent it back yet. @ the price I was hoping not to have to mod the mods.... I should know better by now.
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Boss length should be 34 mm but no shorter !
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All you have to do is mark the drive face and see how far the belt is riding up it. Not far enough either you arent going fast enough or the boss is too wide/tall/long and wont allow it fully close and force the belt in the front to ride high as it needs and doesnt allow the rear pulley to drop into over drive.
Everytime I do any trans work I always mark my variator face and look at it again after 20 miles.
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All you have to do is mark the drive face and see how far the belt is riding up it. Not far enough either you arent going fast enough or the boss is too wide/tall/long and wont allow it fully close and force the belt in the front to ride high as it needs and doesnt allow the rear pulley to drop into over drive.
Everytime I do any trans work I always mark my variator face and look at it again after 20 miles.
A black permanent marker pen I'd ideal for this. Most variators have a little groove worn into them where the belt hits its max. Just ink above this, right up to the outer edge of the variator. Then reassemble and take it for a spin.
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Sweet. Thanks. I have a boss on the way, my cdi is here. Then Ill mark up the variator. The stock belt is a much tighter fit than the belt on my ruckus. Is that a 2 stroke thing?
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The shock belt Is tight, but that's what you want for the highest gearing. The bando is expensive but its worth it. I've hit a ceiling here with my sons zx50. It just won't go any faster than 63mph...or perhaps we just need a steeper hill? Who knows? The Isle of Man TT is only 30 days away and we are still hoping either the 32nd- windy corner or Kate's to the Creg, will give us an indicated 65 :-)
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So, mr aggravated Jew, how have you been getting in with your scoot?
I've taken the right hand rear fairing off mine and applied black silicone sealant around the stator cover. I'm fed up of water getting in and causing the scoot to fail. Touch wood, but no failures since its application !
Just 17 days now until the big trip to the Isle of Man !
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So, mr aggravated Jew, how have you been getting in with your scoot?
I've taken the right hand rear fairing off mine and applied black silicone sealant around the stator cover. I'm fed up of water getting in and causing the scoot to fail. Touch wood, but no failures since its application !
Just 17 days now until the big trip to the Isle of Man !
Well I got scooter assassins boss in the mail, and it is the same size as the one that came with the jasil variator. The jasil works fine with the stock back plate. Cdi is also from SA and installed. I forgot to look and see if my exhaust is restricted by a washer.... Speed is about 50mph indicated, maybe a little more or if I can go on a longer straight away, so Im guessing thats about 45 if I were to confirm. Oddly I seem terrible off the line so I have some more weights coming to play with. I do not have the tools to shave the drive boss so that will be a ways off for me.
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You must have a neighbour with a bench grinder? I'm guessing you are in the us or the uk?
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If youre going to shave it down use a belt sander turned over upside down. A bench grinder will be a little harder to use.
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If youre going to shave it down use a belt sander turned over upside down. A bench grinder will be a little harder to use.
Good advice, or alternatively use the side wall of the grinding stone. It's nice and flat. Remember to keep checking the ground edge to make sure it's nice and flush.
A lathe or milling machine is the best way.
At 34 mil the kickstart spigot only just reaches the teeth on the outer variator. If your outer variator teeth are worn ( as mine are ) a tiny washer placed on the main shaft right behind the full variator assembly makes for a better contact when using the kick start
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have u ever binded ur belt up on the starter teeth after 55mph wot..only happens when goin up hill from full speed..
boss at 34mm has made it happen to my scoot in the past..
much faster,,For sure
dependable,not sure
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Never had that happen, but then again I run starterless, that bendix just interupts cooling airs flow. Let it be free! I could see it happening tho.
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The zx50 made it to the Isle of Man and back. The long haul over the mountain was slow but following my son down towards creg ny baa he hit a solid 60 mph. The bike is back in north east England now and I've leaned the mixture ever so slightly since its return. With only the slightest incline it's regularly hitting 60 mph now. We are planning a final speed test today though ;)
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Prior to speed test
Removed spark plug, cleaned and gapped to 0.9mil and refitted.
Removed the air filter, washed it gently in a small bowl of gasoline.
Wrung it out gently. Dipped it in two stoke oil then wrung out the excess gently.
Refitted air filter.
took the bike out and got it hot.
It must be hot before moving onto the next stage !
With the engine running, Park the bike on its centre stand on a block of wood to lift the rear wheel.
Locate the carburettor on the left hand side if the bike.
There are two screws located close together on it.
The highest one ( and the largest) is the idle. The lower is the air.
Turn the upper one fully clockwise (this allows more fuel in and your engine speed should rise)
Next turn the lower screw fully clockwise (to block the air) then turn it counter clockwise one full turn quickly to prevent the engine from stalling.
Continue turning the air screw counter clockwise and listen to the engine revs. Your aim is to make the engine rev as high as possible. Small adjustments of a quarter of a turn work well here, pausing for up to twenty seconds between adjustments to listen to engine speed.
eventually you allow too much air in and the revs will start to drop. You will then have to turn the air screw back the other way.
adjustments at this point can be very small, as little as 1/8 th of a turn. Find the spot where the bike revs highest..THEN turn the air screw 1/8 of a turn clockwise ( this is important as it makes the mixture slightly rich)
It's unlikely the revs will drop, but if they do, it will be something of nothing.
(i turn clockwise in very, very small increments until I hear just the slightest drop in speed)
Now turn the upper screw counter clockwise until the engine rev speed falls back down to regular tickover level.
Your mixture and tickover are now set. If the bike stalls in future then just turn the upper screw an eighth of a turn until it idles without stalling
Bike was taken to an undisclosed location in North Yorkshire
An indicated 64 mph
I'm gonna try refitting the iridium plug and leaning out the mixture a tad more
It will be some feat to hit 65mph on a genuine 49cc scoot, but the target is now in sight!
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no auto start on my bike either
but it keeps bogging down to an almost stall when the motor pulls hard /uphill mostly
runs fine when just cruise n around as soon as i open up an go 40 or 50 problems occur
???need help
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I think by the sound of it, your rollers are too heavy. Try 5g rollers inside your front variatior
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Start your own thread though, this is for this guys mods.
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already did LMK,whats ur input Love.i need sum serious help. on the other thread of course,
This forums info is priceless.u guys are greatly admired and appreciated more than u kno
Naughty Lee.thanks again bro.got sum new plugs and lighter rollers.
will let ya know how it goes.
"peace n chicken grease"
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Air filter cleaned out, variator stripped and cleaned, with just a quarter turn to the lean, near Saltburn in North Yorkshire, Down a steep bank... This
49cc scoot, indicated today...70 miles per hour!
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Amazingly, this little stinker is still going. It's regularly up in the high 50's and low 60's.
My son is now working and content with the bikes performance..
I've been thinking about upping the final drive gearing at the back and maybe.... Just maybe biting the bullet and buying a pollini variator
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The ped developed a bit of a rattle last week, after a good listen to the engine, we were sure it was piston slap. Wear to the piston, it's rings and probably the bore.
A quick look on eBay and a complete top end kit with gaskets was ordered.
£18 delivered ! Fantastic.
Took the bike to bits yesterday and the side skirts of the piston were black, indicating blow by.
The lower ring was seized in and the bore was scored.
An hour or so later the little stink machine was back together and running.
60/80 miles and it ll be run in.....
Now I'm wondering if the extra compression will give it a little more shove?
I kept the barrel kit at 49cc, cos I still think that bbk s are cheating !
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The bike has had a few gentle miles done on it now since the top end rebuild, the mixture was richened off for a period of time but last week it was leaned back off. When I did the ecu splice, I fitted a switch so that the bike could be limited again. My son obviously wants the bike to go quick, but I don't want it nipping up, so the rev limiter is back on.
Even in this state though , it is still hitting 50 mph with two people on it.
I'm thinking that a spot of speed testing could be in order this weekend
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Update. The little stinker is still going well. My son has now covered over 8000 miles since getting it.
Today it has passed it's annual uk road worthiness test.
It's speed has fallen though, maxing out at 45mph.
The transmission cover has been removed and we have put it down to a worn and stretched belt. A new one is being ordered tomorrow. Going for another genuine bando. Will let you know how the new belt affects speed
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After a few years of trying all sorts of belts I find the OEM bando to be the best for top speed. They may not last too long (in tuned bikes) but they are the correct length for full travel on the pulleys.
Gates Power Link will out last everything else but they do drop a few MPH because they are slightly shorter. Malossi is GREAT for a few hundred miles but they explode when they retire. The China knock off's??? Don't waste your time.
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Welcome back zombie, hope you stick around!
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Thanks Bro! I will.
I forgot how good it feels to be able to help soooo many people or maybe just share some ideas.
This is without a doubt the best, and most well rounded group on the net.
I only have one issue...I need a new AXY! Anyone???
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Don't worry one will come creeping in from the big bore bike threads... wait, medium small bore, yeah that's better. He or she will come in here for no reason other than to make a dumbass comment. "Why didn't you just buy a full sized scooter"? "You gonna ruin your engine" "I don't like loud exhaust" "Babes like my full size step through" "Guns should be illegal" " I wear pink shirts"
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;D ;D ;D ;D ;D
It's so funny causer your right. ;D ;D ;D ;D ;D
I was just reading back thru this, and it's an amazing thread. Lots of real good stuff. I love the way LoveMy barked at that guy. "HEY! Get outta here..."
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Sadly since passing his car test, my sons scooter has sat about in the back of the garage under a sheet. I work away now and normally spend my weekends sorting my own bikes out.
This scoot still needs speed testing following it's new belt, then I think it will be going up for sale.
I'm expecting 53-57 mph on the flat and 60-65 downhill.
I'm gonna be sad to see it go but it's just not getting used.
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Where are you located Naughty?
Even tho the ZX is ugly as sin, it's size make it a good bike for adult riders. I have alot of people here asking for good used bikes. (florida)
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I'm not in fla. But interestingly enough , my parents are on vacation in port Charlotte. I'm across the pond in England
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Ohhhhh... I guess shipping it is out.
Well chip-chip, stiff upper lip, and try not to pull to hard on the fags.
Good luck !
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This thread seems to have fallen off the radar and I can see new posts asking about derestricting
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Bump
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Lots of views. I’d be interested to know how many other people have squeezed more speed using this guide ?
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Need picture of engine exhaust and perhaps carburetor. YOu do not have the same rims as Fever II at least.
Cant tell by the picture.