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Messages - 19krevs

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1
Super 9 / Re: Sting 50 Build
« on: March 05, 2015, 06:46:20 PM »
Ah very interesting, here it's mainly the compliance fee that's a pain in the arse when importing, older vehicles they get upset about baha.
I might do the very same thing with a car engine from Japan in the near future Zombie! once I get these two machines all nice and pretty.

Really hope these ped parts come soon from Germany, keen on hearing the two stroke again.

Oh! and Zombie, did Luigi ever get his up-gear kit installed? I followed him for a month but didn't see anything about it. Was always interested to see if they were worth it...

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Super 9 / Re: Sting 50 Build
« on: March 05, 2015, 03:13:21 PM »
$7500???? jesussssss, haha that is some profit, I bought this one for $1400, probably more than I should have, but it'll be about 1.5-2.5k in parts for her to get her restored.. and thats without a budget! I'm not sure how hard the importing process would be to get them over to the US but it'd be easier straight from Japan I reckon ;) Everyone puts 'tyga' kits on them over here and sells them for 3-4k, I dislike the new look, I love the 90's- old fairings are killer I reckon.

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Super 9 / Re: 125 engine in 50 frame
« on: March 02, 2015, 04:02:11 PM »
I was contemplating doing this too if there was a wrecked 125cc lying around locally, though I think unless you're super bloody lucky you'll have to mod the engine mounts on either the engine or frame... which means planning and welding.... and it'd probably take less effort just doing the needed tests to ride something bigger. I doubt anyone would do a conversion unless they were super keen on telling the system to f*** off. Maybe someday I'll fit up a ridiculous engine to a 50cc frame and troll people on the highway ;)


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Super 9 / Re: Sting 50 Build
« on: March 02, 2015, 03:22:30 PM »
Long time no work!

Not going to lie here guys I have neglected this ped for a while, just using as my daily to get around on and thrashing it in residential areas. I got way too cocky over the days, I was so used to gunning it everywhere that I got flashed twice one morning on my way back from my girlfriends (front facing camera so its all good) and got a ticket for rolling through a stop sign that afternoon! $300 and 3 demerits was not fun; broke down on me a week afterwards. The engine still goes hard, I honestly expected the kit to wear out but she's sweet (Reeds are still perfect too what the f*ck?). Turns out the drain (or maintenance) screw on the bottom of the arreche flew off when I was doing 90km/h and I never found it. I'll post pics when my parts come, but you'll understand when you see it, paints all messed up and flaking off, done just under 8500km's now so I decided I'm gonna give her some fresh paint, new filter and all new gaskets/seals.

I think when I last posted on these forums I had stator problems, so I replaced the stator and she did a little better, but I've ordered a new voltage R/R too. Just before she stopped going I installed an aftermarket clutch with some 1500rpm springs and the white torque spring from malossi. Difference wasn't huge but uphills were kinder to me so I'll see what 2000rpm will do on launches.

Bit off topic also- I've had my eye on bigger and better things haha.... ever wonder why I chose this username? well I bought me self a CBR250RR MC22, 1991 model and I've been doing a resto on it, redlines around 19000rpm! (that is no typo) inline 4 cylinder engine with gear driven cams is pure sex. If anyone gives two sh**s heres the build link http://ozcbr250.com/forum/showthread.php?tid=1351 but you need to be registered on the forums :\ pissed me off when I tried to show my mates.

Heres how she looks after quite a bit of cosmetic work:


It's nice looking back on these forums and seeing how inexperienced I was.
Watch this space! I'll update this soon when my new parts come from germany.

5
Super 9 / Headlights causing bike to cut out
« on: August 19, 2014, 03:37:30 AM »
I've had this problem for about a week now, turning ON the headlights causes the bike to cut out and backfire, I can start the bike with the headlights on and it will idle fine with the normal dimming but it only stays on because the idle is set high. My understanding is that something is wrong with the stator/rectifier system since high beam flash and tail lights work fine, same with the indicators when the rear brake lever is pulled in (all of which run off the battery). I've already ruled out it being the battery because I bought a brand new one not even a month ago.

Unsure if its linked but I've been getting a rich mixture symptom when I let off (backfiring) and on 1/4 - 1/2 throttle as if it's misfiring, my jetting was spot on before this problem started and I had just put a new spark plug in, I realize this might be due to exhaust gasket leak however.......

Since I do most of my riding during the day it hasn't affected me too much but it is rather dangerous at night (black scoot).

I don't have a multimeter to test the stator which is another pain in the arse :/

Has anyone else had this happen to them?

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Super 9 / Re: Oil & Smoke
« on: August 02, 2014, 04:35:52 AM »
Cheers for the insight, I run 35:1 premix with semi-synthetic I thought that was a high-ish oil mixture compared to some others and always wondered why it doesn't smoke much.

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Super 9 / Oil & Smoke
« on: August 01, 2014, 11:24:52 AM »
Just about every video I see of someones 2 stroke scoot (ones that are running great) they have smoke pouring out of their exhaust, I know some people would prefer not to but I like the idea of it smoking up a lot. My scoot is pretty good, only smokes a tiny bit on start up/low revs. What causes this, type of oil used? (fully synthetic etc) carburetor settings? higher oil to fuel ratio?

8
Super 9 / Re: open air filter size for stock carb?
« on: August 01, 2014, 11:10:39 AM »
I'm confused? why not just take the air box off and just measure the carb intake? I measured my stock carb at 37mm, better off doing it yourself and making sure however.

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Super 9 / Re: Sting 50 Build
« on: May 23, 2014, 09:07:58 AM »
Zombie I see why you're so respected on these forums!
Reeds looked okay and it was indeed a vacuum leak (however I don't have a Leak Down tester), it was coming from behind the intake/reed manifold (I could feel it on my hand) so I'm gonna get some new gaskets.

thanks for the help :)


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Super 9 / Re: Sting 50 Build
« on: May 21, 2014, 10:16:03 AM »
thanks DM :)

wellllll I ran into some bad news today, on the way home I had trouble starting and idling at first but I got it running up until I stopped at some traffic lights and she died on me. So after checking the carb in a parking lot and changing out my spark plug, damn thing still wouldn't idle right. In a desperate attempt to get it home before dark I just managed to keep the revs up with the throttle and it was fine; anyway- would I be right in saying that the reed valve is the problem?

I'll be checking them tomorrow when its light out, but if anyone has any ideas (if possible) on getting those undersized malossi reeds to fit onto my reed block (a couple mm too skinny) it would help greatly.

11
Super 9 / Re: Sting 50 Build
« on: May 14, 2014, 02:02:14 PM »
Still eagerly awaiting parts  :-X

Thanks zombie haha, and I dig that theme too, It was decided when I first got it I would be going for a 'why would anyone want to steal this?' vibe not a 'flash' build were it's all clean-glossy paint, matte black was a must, although I do get envious sometimes of all those guys in europe with their ridiculously good looking aerox's aha.

Luigi be sure to make a post about what speeds you're getting when you do install your gear-up kit, since we're similar builds it interests me greatly ;D not that I am looking at getting one, since the word overkill comes to mind haha.... ;) Scoots are banned from freeways here in AUS so doing over 100 anywhere else could lose me my license and ped :o Although getting reactions from people seeing a 50 on the freeway would be great!

Another pic- love the back view.


I'm gonna try my hand at a homemade boost bottle soon, see if they really do help with low end/mid. Might even make a before/after video since I couldn't find one myself (I think stock/after mod videos should be more of a thing).

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Super 9 / Re: Sting 50 Build
« on: April 20, 2014, 05:26:50 AM »
Re-torqued just about every bolt I could from in the manual, swapped my rollers out for new ones (same gram) she's running fine now on 35:1 pre-mix without the vibrations (phew) :)
I've tested top speed once on flat and the needle went way past the 80 mark (would be around 110?) but I would say no faster than 95km/h? //Also used a crap load of my fuel.
I'll try GPS it when I have time, ordered some heavier rollers and other bits n bobs aswell.

13
Super 9 / Re: Sting 50 Build
« on: April 13, 2014, 11:15:29 AM »
Okay out of luck I managed to get the variator nut off with the help of another bracket to hold the variator lock in position, and I've put 6,3 polini rollers in it (have to switch those out with some heavier ones). The vibration is still there sigh... I'll see if I can try that 'rear brake acceleration' on my clutch tomorrow morning and figure out if it is my clutch, saw some posts about engine mounts and center stands causing vibration, if not, guess it's back to square one and I'll check the head/cylinder :\

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Super 9 / Re: Sting 50 Build
« on: April 13, 2014, 08:35:02 AM »
cheers c:

haha yeah I read those, you definitely did your research, I spent a lot of my time using the search function on these forums ;)
I've got mine set to about 1/4 open all the time, which is the best I can do from the stock adjuster since I have no zip ties left. Do you run pre-mix aswell or?

Take off is definitely a lot better, but I still feel like the bike isn't solid, a higher idle jet running in it right now would do me a little confidence.
I'm getting max 80km/h right now ; _ ; if that, I know it wants to go faster because it'll sit at 70km's without a problem while I'm 1/2 throttle, my 50cc got as high as 90km's once on flat (no idea why).
I got scared today/yesterday because of how much vibration it was having sitting at certain RPM's, at first I thought the worst case scenario that I might've been running lean and it was ruining the rings or something.... (doesn't make sense because I did a few plug chops and it was a nice light brown colour) anyhow after putting the needle back to mid (from high) and changing to a 105# instead of the 100# my plug fouled...
I noticed it would bog down when I had the 50 in it sitting at rpm's too, and cause vibration at higher rpm's aswell (around 80-90km) so I think the rollers have bad flat spots and it's putting off the balance... either that or something in the variator. Pretty frustrating having new sets of rollers just sitting here and not being able to get the variator nut off.. don't think it would be the clutch either since the only time it doesn't seem to vibrate is when I'm accelerating.

Anyone have any other ideas as to what it might be?

15
Super 9 / Re: Sting 50 Build
« on: April 10, 2014, 01:46:46 PM »
It has been a long day, finally finished.

I took your advice joebro and went Malossi haha, figured that if I'm spending the money it might as well be on good well known parts. These arrived yesterday: (20mm Intake, 21mm Arreche Carb, Malossi 70 Kit, fuel line)


Chucked the carb and bigger intake on first so I could make sure it was running all good before putting the 70 in, grinding the top of the carb cable (where it connects on the stock carb) was the biggest pain, got the carb on and then it wouldn't start. Clear fuel lines are real nice fyi, no taking the float bowl off to see if there is fuel flow or not, figured out the cable was too short and it wasn't blocking off the intake. Got her running (although rich on a #90) so I moved to the 70 kit, my old head & cylinder looked down right disgusting! this ped only has 4000km's on it.... (guess it might've been left somewhere under weather..?).


Put the 70 together and made sure I lubed it heaps, fired up first try, so stoked with it.


I'm running 100# main jet with a little bit of premix and oil-injection for now, will definitely be changing to pre-mix when I get the time since both is just a hassle. Runs good!

Next up is to:
-change to the lighter rollers.... which was a complete failure when I tried today, I ordered a variator holder/bracket (?) for the yup and it doesn't fit, so there goes that, but keeping the rpm's down during the run-in period with the heavier rollers works out well.
-bigger idle jet
-reeds (the ones which came with the 70kit don't fit)

Thanks luigi for the specs, gave me a good area to start for the jet size :)

Some pics:



Just realized this ^ photo is before I put the carb on.. whoops

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