KymcoForum.com
Scooters - 50cc => Agility 50 => Topic started by: oskarpyc on December 09, 2017, 06:59:05 PM
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Hi, I own a Kymco agility 50 4t 2013 model with 6000km. It gets about 36 mph on a flat and around 20-25 mph on steep hills. I would really like to get it to go around 45 mph to keep up on 50 roads and slightly better acceleration up hills but not quite sure what mods to do as everyone says to put a big bore on it which I don't want to do. So far I put an unrestricted variator boss on and that improved the top speed from 28 mph to 36 mph. I also put on 1500rpm clutch springs to get better take off speed. Thanks for reading my post and I really hope I will get some advice on to what mods to next!! :)
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Sounds like you need a 150cc scooter. Thats the only sure way to get the performance you want and still have a reliable ride.
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If I could then that would be great. But I live in the UK and at 16 you can have a maximum of a 50cc and 125cc when 17 :(.
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Wait a year and get a 125. I had an Agility 50 for a while and it gave me the bug for scoots! Rode that thing for a year or so then moved to the Yager 200i which was really a 173 cc. I read the chinese scoot forum, scoot dawg and this forum and Mr. Paul is right. There is only so much that can be done with a 50 cc. You can spend THOUSANDS and still have a machine that was designed to be a 50. Now, if you can find an Agility 125 where the engine unit is still good.....you get the idea!
Karl
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Yeah mate you do have a good point, im not expecting huge gains on a 50 just so it would go around 45 on flat and slightly better uphills. from what ive read the contra spring makes a big difference uphills and such. and yeah man cant wait untill i can get a 125! cheers
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If you're getting 36mph from a 50cc, you're getting just about all there is! For hundreds more, you might get 38mph, but not much more.
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Yeah, I order 5.5-gram rollers, 1500 contra spring, ngk iridium spark plug, unrestricted CDI, performance ignition coil, 82 main jet and ill see if it improves at all, I read that after these mods you can get around 44 on flat and 50 downhill (mph). They arrive in a week I'll fit them and ill tell you if it's worth it and what has improved. but yeah I'm not expecting huge gains it is only a 49cc engine, however, an extra 7mp/h to top speed would be nice, I read that the 1500rpm contra spring makes the biggest difference and hill climbing and starting off gets the biggest effect and its improved majorly.
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Yeah, I order 5.5-gram rollers, 1500 contra spring, ngk iridium spark plug, unrestricted CDI, performance ignition coil, 82 main jet and ill see if it improves at all, I read that after these mods you can get around 44 on flat and 50 downhill (mph). They arrive in a week I'll fit them and ill tell you if it's worth it and what has improved. but yeah I'm not expecting huge gains it is only a 49cc engine, however, an extra 7mp/h to top speed would be nice, I read that the 1500rpm contra spring makes the biggest difference and hill climbing and starting off gets the biggest effect and its improved majorly.
Let us know how it goes. I really hope it works out for you!
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Right so most of the parts have arrived. I now have the contra spring, rollers, spark plug, main jet. i will be installing them one by one to see which one gives the biggest boost. tomorrow im going to install the spark plug see if that helps it at all, then maybe the bigger main jet althought im not very experienced with carbs, but its always good to learn!!. and then later in the week ill install the rest im waiting for my impact gun to arrive!
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Okay, so after fitting the iridium spark plug, the only difference is that it runs a bit smoother and starts much easier when cold and very slightly better on hills but not even noticable! I'm waiting for my impact gun to arrive now as i cant get the clutch and variator off, it should arrive in a week or so and ill tell you how it goes!
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I fitted the 82 main jet. and it didnt feel like it made any difference, but i noticed on the slight hill i usually do 30 i was doing 34 and there is slight improvemnts overall but its not very noticable, next is contra spring and rollers, should be able to fit them tomorrow or the day after that!
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I fitted the 82 main jet. and it didnt feel like it made any difference, but i noticed on the slight hill i usually do 30 i was doing 34
That seems significant to me. I'd be quite pleased.
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Yes, today on my daily ride there was quite a big difference which i didn't feel before maybe because i was really looking hard, it was pulling up slight hills quite a lot better but up big hills around 23mph, however, the new contra spring will hopefully make a difference as i read other people say, im pretty busy right now as i have exams, im gonna try fit it on the weekend. 82 main jet for me personally is a definate, this also in my opinion makes it run smoother!
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Okay, ive now noticed that the bike is starting to run worse and worse and its quite a lot slower, im not sure what it might be but i might put the 80 main jet back in it and see if that will fix it, i reckon its getting too much fuel now! Im going to try fit some parts tomorrow to it if the weather isn't shiet like it is now!
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I've just bought a '17 Agility 50, does the CDI cut work on this year model? I'm hoping kymco haven't updated their design to weed out this mod haha. I haven't changed a single thing with this scooter yet, can I purely do the cut or do I need to change jets or anything else?
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Personally, im not going to cut my cdi as i dont trust that method, If i were you i would just leave the cdi stock without cutting it, I'm fitting the contra spring and new rollers today and tell you if its worth it! So far i put bigger main jet and unrestricted boss, the boss increased the top speed by about 8 mph, the jet however i put an 82 in and it decreased the performance, so the boss is a must and ill tell you about rollers weights and contra spring once fitted! I'm making this as honest as possible
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Holy crap! putting 5.5 gram rollers made a big difference for me, mainly because the old ones had flat spots and were very dirty, when you change the variator make sure to clean it very very well with some cloth and do not, i repeat do not put lube inside it will not work well at all, they need to ROLL hence the name. I didnt do the contra spring as i didnt have the right tools! I put the new ignition coil in and that made it start so well in dry and wet weather!
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Really great progress reports! Really pleased to hear what you are doing, what works and what does not. You are having great success and seem to be having a good time at it!
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Thanks! that's what I'm trying to do make this as honest as possible and as clear as possible!
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So! After 2 hours of riding, ive realised that the scooter started feeling worse before because the rollers were worn! and now with the 82 main jet and new rollers its very very nice and doesnt struggle to keep up with traffic! very good, it tops out at 40 but thats because it needs a new belt! So my final review is, getting clutch springs- 1000rpm or 1500rpm i chose 1500rpm but 1000rpm is better choice for in town riding, do the 82 main jet but clean the carb out at the same time, put 5.5 gram naraku rollers in it that is a very nice improvement, and you dont need to upgrade the ignition coil but i did just for the sake of it! All the links of purchases below:
Ignition coil : https://www.ebay.co.uk/itm/Racing-DC-CDI-Ignition-Coil-For-Scooter-GY6-50cc-125cc-150cc-Kymco-SYM-Vento/121936214118?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649 (https://www.ebay.co.uk/itm/Racing-DC-CDI-Ignition-Coil-For-Scooter-GY6-50cc-125cc-150cc-Kymco-SYM-Vento/121936214118?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649)
82 Main jet for stock carb : https://www.ebay.co.uk/itm/Keihin-Carburettor-Carb-M5-Main-Jet/272844414070?ssPageName=STRK%3AMEBIDX%3AIT&var=572022211238&_trksid=p2060353.m1438.l2649 (https://www.ebay.co.uk/itm/Keihin-Carburettor-Carb-M5-Main-Jet/272844414070?ssPageName=STRK%3AMEBIDX%3AIT&var=572022211238&_trksid=p2060353.m1438.l2649)
5.5 gram quality rollers from naraku : https://www.ebay.co.uk/itm/GY6-139QMA-QMB-50cc-5-5-gram-HD-Variator-Rollers/272805158698?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649 (https://www.ebay.co.uk/itm/GY6-139QMA-QMB-50cc-5-5-gram-HD-Variator-Rollers/272805158698?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649)
I have yet tried to put a new 1500 rpm contra spring in it so not going to recommend it yet, but once i do ill tell you if its worth it, i have a suspision that mine already has a 1500rpm spring but here is the link : https://www.ebay.co.uk/itm/Kymco-Agility-50-1500-rpm-Sport-Clutch-Contra-Spring/302289885501?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 (https://www.ebay.co.uk/itm/Kymco-Agility-50-1500-rpm-Sport-Clutch-Contra-Spring/302289885501?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649)
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Personally, im not going to cut my cdi as i dont trust that method, If i were you i would just leave the cdi stock without cutting it, I'm fitting the contra spring and new rollers today and tell you if its worth it!
Thanks for the tip.
I hate to be that guy, but I have no idea what any of these terms mean. Is there a write up on this site or another that explains? And are there any write-ups on how to carry out this work?
I have no idea where to start! I don't want to do too much, I just need my scooter to go a little faster, perhaps 10kph faster would be excellent :) So if you could recommend what would be the easiest thing to do, that'd be great!
Cheers,
nowukkaz
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Sure, ill send you a youtube video on how to do the variator boss which will give you a really good increase in top speed! Its very simple, you just unscrew all the bolts around the black case below the air box, then you need either an electric impact gun or a variator holder tool, unscrew the cog looking like thing on the left, on your right is your clutch but you dont need to touch that, once you take the variator off you slide the belt off the metal boss ( the round looking like pipe), you pull it out with the variator and pop the new smooth boss in and re fit everything in reverse order, if that isn't good enough then here is a youtube video of how to do it mate! https://www.youtube.com/watch?v=f_ZZ4AuHaVE (https://www.youtube.com/watch?v=f_ZZ4AuHaVE)
Good luck!
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Sure, ill send you a youtube video on how to do the variator boss which will give you a really good increase in top speed!
Good luck!
Thanks heaps oskarpyc, that looks simple enough.
Are the unrestricted boss' interchangeable through different kymco scooters? Or do I need a Agility 50 specifically?
I'm from Australia so it looks like I'll be ordering from overseas, I'd rather order from Taiwan or similar instead of USA, it'll take forever to get here if I go thru USA etc.
Cheers mate : )
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Im prety sure most will work as long as the size is 20mmx38mm however i wouldnt take a risk if i were you, i just bought one that said it is specifically for my scooter.
This is the one i bought and it fit mine fine : http://www.ebay.co.uk/itm/UNRESTRICTED-VARIATOR-DRIVE-BOSS-BUSH-for-KYMCO-Vitality-50-Activ-50cc-/301467129162 (http://www.ebay.co.uk/itm/UNRESTRICTED-VARIATOR-DRIVE-BOSS-BUSH-for-KYMCO-Vitality-50-Activ-50cc-/301467129162)
btw it comes from taiwan so shouldnt take too long for delivery for you.
Good luck!
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Decided im going to sell the kymco and buy a 2 stroke as i want the more responsive throttle and more POOWWEERR ahaha. Gonna try get a yamaha aerox, aprilia sr50, speedfight 2 or a gilera runner sp
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going to sell the kymco and buy a 2 stroke
(http://ratz.com/urls/chainyank0300/images/yankaward.gif)
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Unfortunately, none of those mods will make much difference, except maybe swapping the CDI. It is what it is, and your target speeds might require a 150cc. You can spend a pile of money and only get another 2 or 3 mph.
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Why? I swapped the main jet to 82, better coil, cdi and now i cruise at around 43 mph and downhill i get 48 i haven't pushed it further but i might get 50 if it's long enough, dont underestimate the power of the KKYMMCOOO
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Why? I swapped the main jet to 82, better coil, cdi and now i cruise at around 43 mph and downhill i get 48 i haven't pushed it further but i might get 50 if it's long enough, dont underestimate the power of the KKYMMCOOO
Hey man!
I got the part. Just trying to find time to fit it. (newborn daughter haha).
I havent derestricted the CDI at all, my bike is completely stock. Will changing the boss to unrestricted still work? I honestly just need to get to 40mph/60kph and I'd be happy!!
Cheers
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Hi! sorry for the late reply, yes unrestricting the boss will help you a ton! my managed to go from 28 mph to 40 mph after changing the boss its honestly a huge difference in top speed. If you put a derestricted cdi in it you need a 82 main jet because it will run at higher revs. i managed to get 57 mph out of mine today down a really on hill. Changing the torque spring from the stock one to 1500rpm was my favourite mod. so if you want to get the most out of your scooter and be able to cruise at 40-45 on flat roads and 50 downhills then do this.
-CDI Unrestricted
-Boss
-Main jet 82
-Clutch Torque spring 1500
- i changed my rollers to 5.5g but you dont need to do that
then you'll be a happy rider! :) good luck
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Now, if you can find an Agility 125 where the engine unit is still good.....you get the idea!
Clue: you can't swap a 125 into a 50 - the frame is totally different.