If you want to derestrict in disguise you can weld the dummy pipe back onto the exhaust on top of the washer :). Im really stuck with trying to find solution and its getting really frustrating how I cant overcome this stupid problem. how do i get my btm 125 4 stroke to go faster 5. You can make your four stroke scooter faster by installing a number of products or making one of a handful of aftermarket alterations. Step 1 Disassemble the air box and remove the filter. Do you know much about where the restrictions in these lie and how id go about removing them? Hi Daniel, I have bought a sachs sx-1 which was standard but broken so I have fitted a new 70cc cylinder and cylinder head, new Leo Vince exhaust (with restrictor removed) and unrestricted new C D I. Daniel, I have a new Italkit 70cc cylinder kit for a Aprilia Morini engine. It can be removed when disassembling the silencer. In order to comply with various speed limit laws for scooters the manufacturer needs to ensure that the scooter does not go faster than the allowed speed in the country it is sold. In most cases, your bike won't even start or idle roughly . 4. Thank you for the information combined in such a nice article! - Request assistance from the technical team, - Terms and conditions of sale and returns -. Tho, it might be that the engine is really just crap and wont go faster even tho its derestricted. Variator weights are so light, that the given engine speed does not produce enough g-fore to pull the variator plates together. Got any tricks? Hi, would a geared bike have front pulleys and if so where would they be. 3. It is attached to the system by a pin that is tightened into place with a small bolt. Hi I was looking through these posts and it seemed interesting! The new page will be a lot easier to navigate and community features will be much improved. Hey i have a Dongfang 50cc SST (DF50SST), Its restricted and only goes a max of 31 mph after 15sec of full throttle. REAR PULLEY There is a squealing noise coming from around the rear wheel when I initially start up and pull away, the same noise as you sometimes hear on a car as it pulls away, but i might have mistakenly put this down to the brake needing to be replaced, although the brake has poor stopping distance! If what you want is to increase the power of the bike to your liking and directly modify the engine map of our scooter and its injection, this is your modification. Is it possible to make a 50cc scooter go faster without actually The piston goes up, compressing the air/fuel mixture. 2ndly do you know of any other restrictions? so, bore big drown the engine and only necessary dwarf pipe hail brute force !!! Unscrew these bolts to remove the intake entirely. Unfortunately high temperatures should try to be avoided when increasing performance (increasing temperatures equal a loss of energy into heat).. Too light and the engine will overrev, too heavy and the engine wont rev enough when accelerating out of corners. Do you have any tips for me on how to derestrict it and/or improve performance. Increase the air flow to the engine. It is a bit of an open story if air filter restrictions are really applied. For the more advanced tile enthusiasts, having tile nippers, tile cutters and trowels would be good. That is a 4 stroke, and it's Chinese. Ultimately it is best to get a 70cc kit and some matching exhaust. There might even be a second limiter indtalled! My sons got a Lexmoto lsm 50. If you want a good balance of performance and sound muffling, you would likely pick a more thickly packed muffler. you mentioned You cant modify them yourself. Also, this is only valid for the 50cc models. Would really like to see it. Hi, I am in the process of restricting my keeway fact 50. Would this simply be a case of wear-an-tear? Still, keeping the rear pulley well lubricated is essential. Disengage the kickstart from the variator system. Hi, I have an aprillia area 51 which you hav probs seen, they are quite a big moped for a 50cc, 100kg dry weight. Simply grind off the small welding spot that hold the restriction in place and it can be easily removed. The bike starts and ticks over and runs at low revs OK but when I give it a hand full of throttle it bogs down and backfires. In this article we are going to explain you how to increase the power of your 125cc scooter that you want so much on your 4-stroke scooter. Or will it still make a difference to change it with the stock exhaust. Install lighter ones and acceleration will be fine again. 50cc Scooter Performance Parts Theyre all either yobs wanting to outrun the 5 0, or either have the understanding and are lax in presenting it, or they just dont care for the fine collaboration of the machine parts to enhance performance whilst maintaining its longevity. For other brands this might not be the case. If you choose to make all of the potential alterations available to you, they could improve your four stroke's top speed by five to ten miles per hour. The exact process of installing aftermarket pulleys depends on the size and type of pulleys you purchase, but for any scooter it will require you to remove the faceplate of the variator case which is held on by six bolts. For example, mufflers for 50cc scooters can be installed on any 50cc scooters. This depends on the vendor and manufacturer of your scooter. I wrote to Racing planet but they do not support this bike. I wrote this article with the goal, of having a complete overview about the different forms of restrictions applied to 50cc engines nowadays. Tho, even without the restriction, those new 4st engines are made for fuel efficiency rather than high speeds, so dont expect too much :-/, Hi I just bought a 2010 kymco super 8 50 2t I enjoy it but it tops out at 25mph is there any advice you could give me to increase the mph to at least 40. i have a gilera ice 50, ive recently bought a stage 6 exhaustm which should have fit on my ped, but the mainfold where i join them together are 90 degrees out? Whilst running & idol my revs wont sit still. Have you done it? how DO you tell a chink bike from a jap? There are some bigger engine scooters with restrictions but it is very untypical for them to be restricted. Its confirmed as being a Long Case GY6 139QMB engine according to the chassis and: http://www.youtube.com/watch?v=vP7OnJZGcCc, And a JCM139QMB according to: http://www.jincheng-global.com/zdw3.asp?prmo=JC50QT-20&tyno=A&ptty=A02. How to Derestrict a 4-Stroke 50CC Scooter | It Still Runs It should be removed as the ring causes the engine to run at a high engine revenue speed most of the time (imagine you cycle on a bike always on the first three gears even though the bike has seven). The safest way to block the crankshaft is to buy the special blocking tool. Ive asked the shops about the CDIs, and they are saying it doesnt work with the Bullet RS. Thats one thing they have in common with US companies cost-price analysis. I know that writing articles is boring and time consuming. All that is needed is a little grinder (ideally Dremel, Proxxon, or other micro grinders). The most common would be to increase the cubic capacity of the bike by changing the cylinder, piston and cylinder head, but, besides being a very expensive modification, we would be outside the law. 50cc scooters are available in two . Hi Daniel, The bike runs the same whether I fit the standard CDI or the unrestricted CDI. The exact process of installing aftermarket pulleys depends on the size and type of pulleys you purchase, but for any scooter it will require you to remove the faceplate of the variator case which is held on by six bolts. The electronically limited CDI is one of the few restrictions that does not affect the overall engine performance over time. Hey Daniel, unfortunately, you dont have a clue what is going on there, so here it is: High temperatures, of course, can not be avoided, be it in engine or exhaust, be it stock scooter or not. These are the most common restrictions applied to scooters nowadays and probably the main reason why you are reading this post. You should lower the weight of the rollers! Do you know what engine it has? Is it going faster downhill? The scooter most likely has a variator ring installed. so it wont join as the holes for the bolts need to be moved round? by removing it or even simply filing the nylon part away i found the carb butterfly opened fully and not half way as previously. Youre right it is difficult! The cooler alternative imho is to swap with a Minarelli 50cc engine as its 2-Stroke, but thats just me :). Whats the best 50cc moped to derestrict for acceleration and top speed thanks. Will a bigger carb make my bike faster? Also your insurance might not cover you anymore. By doing those few things you will have an extremely noticeable increase in power. 50cc scooters are built to offer limited speed and range. Removing the restriction does not require any welding. Piaggio engines usually have the dummy pipe and the variator ring applied. JCosta speed variator to increase the power of a 125cc scooter Change the electronics of the motorcycle If what you want is to increase the power of the bike to your liking and directly modify the engine map of our scooter and its injection, this is your modification. Just bought a kymco k pipe 50 and though it will do 38 on a flat run it drops down to 20 or less on all but the slightest of hills.Can you tell me how the bike is restricted and I will endeavour to work around it. These restrictions are not stock and therefore need to be installed by the vendor of the scooter. Please note: It is not possible to derestrict the CDI by yourself. Will replace with new one anyway for DIRECT comparison for future reference. It is one of the most recommended modifications if you are looking to take advantage of all the power generated by your engine, since we will be able to send it to our rear wheel through the belt. How to de-restrict/de-limit a 50cc Euro 4 GY6 (Chineese) moped. Youd probably need to increase your gear ratio if you want higher top speeds! Hello Daniel! Removing this washer requires minimal mechanical know-how and few tools. They come with a speed restricted engine that lets you touch a maximum of 30mph or 48kmph. It might be the case that your gears are simply to short and you need to install longer ones! i dont have any money to use to upgrade it or buy parts otherwise i would buy a new one that goes faster. How Can I Make My Stock Exhaust Sound Deeper? - Monimoto US, How To Quickly Determine The (DellOrto) Carburetor Main Jet Size, How To Check Your Spark Plug for the Correct Carburetor Setting, How to check if your Scooter CDI is restricted, The Ultimate Scooter Tuning Exhaust Test (70cc Sport), To allow for use with a certain drivers license class, To comply with speed limits and legal requirements, Check the vario rollers for wear and replace them with new ones, Ensure that the belt is still within specification or just get a new one, Remove the vario restriction as described in the article. Thank you for recommending the page and I hope to see you on TuningMatters.com 2.0! But it goes 35 mostly and less often it hits 40. I would greatly appreciate your help if you know anything about this topic. Thank you for the info and hope to help some other people that have the same desire of better speed. I can just be sittin on it not touchin a thing an the rev needle will raise to 2k 2.2k then drop either back to or below 1.8k and bounce about like this almost constantly, but only while idol. Alter the variator system by removing the restricting washer underneath the front pulley wheel. It is simple to operate with its easy electric . Rev the engine up slowly and check if at some point the engine stops revving for no reason. Thanks Shaun. The variator is the part that connects the power generated by our engine with the transmission system. If you are looking for an inexpensive scooter by a well-known manufacturer that can get you around smoothly, then this JLQT-14 gas-powered scooter may be the one for you. Hi daniel, bike has standard exhaust with the baffles removed, It revs up fine and does 35mph downhill bit the revs just keep increasing till it sounds like its going to explode. Does anyone know what restrictions there are on a Yamaha YN 50 E Neos ? Have a look whats hooked up to the battery and the stock cdi. Thanks in advance Martin. Out at half throttle anybody know why. Ive built many engines in past years Cars Twin turbo 300zx, Corvettes, Porsche v8 928s4 etcand crotch rockets as well as dirt bikes. Russell. I have searched on ALOT of websites, and i havent found a single derestricted CDI for my Bullet RS. I just bought a 2009 Super 8 (4 stroke version) and I have removed the shoulder on the variator boss and I have also removed one of the purpole wires going into the CDI. I was curious whether or not i should apply to a light bike/motorcycle frame, to get that kind of bobber or kikker look. UNBURNT so, of course there is no loss of energy. The airbox is relatively small and can be tuned but it is not necessary if you keep your engine stock and just want to derestrict it! I have Peugeot Speedfight 3 2012 plate, and it does not run over 30-32MPH and it extremely irritating because when within the limit I want to go faster. The CDI (Capacitor Discharge Ignition) is a black piece of electronics that handles the ignition process of the scooter. no part changed or anything. Could I run the scooter without a thermostat or would you not recomend doing that. Hi G, Sorry only now saw your comment. This should do the job! What carb is it? We're always willing to return your call if you have questions. When we finally stopped for a chat, i had a go of his myself so i could see how mine should ride with no restrictions in place and the thing nearly took off from under my asre the acceleration was that fast! Am lookin into buyin an unrestricted one at the mo, seems a lot of people buyin em on eBay an buyin the wrong ones. A 4-stroke engine works as follows: The piston goes down in the combustion chamber, the intake valve opens, and the air/fuel mixture enters. Especially the main jet might need to be increased to comply with the higher engine revenues and the increased amount of fresh air supply. And its restricted, though Im not sure if its the CDI box. My highest was 45 and that was down hill. No risk for engine damage or anything! They follow a pretty simple (and thus easy to identify) formula, obviously. Also I dont know what Im looking for as far as performanceI love speed and if I could get this little beast to do a wheelie Id be in heaven. Get involved in the comments, or post to the forum to make this page more fun for everyone. Aftermarket exhausts do not have catalysts for one reason only profit of manufacturers. Does it take a while on the straight from standing before the engine picks up on speed and starts revving higher? just finished reading the How to de-restrict a 50cc Scooter page, and i must say that Ive just learnt more in the past 15 minutes, than i have in the 2 years of riding & reading nothing but $H|T on the net. It features 12-inch cast-aluminum rims with five paired spokes. Use an impact wrench to do this. Quieter and Reliable. The rear pulley acts weirdly and doesnt fully close, hence does not allow the belt to travel all the way up. Also have a look for the exhaust restirctions. Hey Daniel, I live in the states and ive been looking into getting a 50cc engine. Examples for these are variomatic rings, exhaust dummy pipes and carburetor opening restrictions. Certainly too heavy rollers. Step 2 Open up the variator system. Remove that and you will get some more top end. According to my official papers the engine is NS-50F. On the other hand the manufacturer wants to build engines that perform well in terms of acceleration. If you aren't, sell it and buy a reputable brand's 2 stroke, it'll automatically be peppier and easy to hop up. 90 on a stock engine is way too big! I have a 4 stroke 50cc ice bear rocket. hi Daniel, the air cleaner has been cleaned I have not changed the jetting at all its the same as when it left the factory ( if I have to change the main jet do I go bigger or smaller ? ) 3. Do you have any idea, how to make this scooter faster? The easiest way to remove the catalyst of your scooter is to replace the stock exhaust with an aftermarket model. These are the good restrictions. The fastest it will go is about 58km/h and if im lucky 60km/h. Again, you get no performance boost if you take out the catalyst and let unburnt fuel pollute the air that we breath, instead of getting it burned in the catalyst. This can be accomplished by either drilling holes into the air intake (located above the variator case) or by removing the intake altogether. It reaches 45 on the flat (even with the variator restriction), but will slow to under 20 on even a moderate gradient. Can you take a photo of it? By good I mean these can be removed easily without spending a single penny (given the right tools). Alter the variator system by removing the restricting washer underneath the front pulley wheel. have you done any other changes besides the CDI? You can drill or poke holes into the intake with any size drill bit or awl, as it is non-rigid plastic. Also make sure that youre main jet is choosen correctly. The Piaggio Injection models utilize a restricted CDI. Though i didnt think to check if the idle had settled at the time, regardless the problem is still there, Please forgive my naivety in the next sentence, its just the way i was brought up, Im in no way racist but. I dont know the differences in performance between the two but he was on a 2 stroke compared to my 4. Maybe the problem is much more with the cdi. Many thanks! Otherwise the carburator can not work at its maximum performance. Brought to you by Leaf Group Step 1 Detach the kickstart from the variator system. 1. Your content should go viral. 4. Buying an unrestricted CDI overcomes this limitation. Get an unrestricted CDI if the scooter wont go faster, even downhill. Help just had clutch to bits on piaggio nr3 now engine cuts. Different countries have different laws. Hi ,daniel ,I have a yamaha neos yn50 2 stroke,I have put a q-tre sports exhaust on will I have to put a different jet size on carb the one I have on is size 60. size 60 should be ok. Maybe size 65 check the spark plug! I appreciate it that you like it so much. How to derestrict a 50cc Scooter - TuningMatters.com Ive only found CDIs for TGB Akros, Jetfighter etc etc. Usually when scooters are restricted to 25kmh there are additional restrictions over the factory restrictions in place! Some allow riding a scooter without a drivers license and others have multiple different licenses for various engine sizes. Your scooter is electronically limited through the cdi. A 50cc two stroke that can get a minimum of 40-45 mph with minimum work (ie, simple derestricting). We must be very careful since it is possible that, by modifying the injection and the engine map, the emissions generated by the engine are higher and we do not comply with environmental regulations. It is at this point where most scooters waste the most power, as it does not usually take advantage of all the torque generated by the engine of our scooter. What parts are installed? and where to buy them at. Thanks for the quick reply.No other changes made other than the cdi.The air filter is stock and the main jet is 90,we tried an 80 and it made it worse. If you are looking to enhance your scooter enter our store and find all the components of the highest quality for your model at the best price. Hamilton holds a Master of Arts in English education from the University of Pittsburgh, and a Master of Arts in composition from the University of Florida. Your info is great, got a taotao just to run food for the stray cats,(deh Florida). Whilst this can be done it is usually not worth the effort. I have a 125cc honda Aero, currently it goes around 45-50. Complicating the issue further still are derestrictions and modifications. If there is no direction you can point me in then maybe you know of other bikes that match the specs of the TS so I can look their manuals and vids up instead? [] RicambiMoto2000.it Ricambi e accessori per scooter e moto. Any ideas? The Naraku ones from Racing Planet are cheap and good! The Garage. }:). Please be a little more specific as to the type of modification(s) and the reason(s) why. When i removed the vario to inspect the ring, with two lengths of bicycle chain linked together and attached round the center stand structure for leverage by the way, i immediately noticed that the travel line of the belt was a poor 2/3rds of the way up the var and looked like it had never even been close to full potential. The only parts acceptable to remove from an air filter are diameter restricting nozzles as pictured below. And where does it sit? If you continue to use this site we will assume that you are happy with it. Base your decision on your performance desires. Your manual will indicate the engine size, and the mechanic or salesperson will show you the range of muffler options. Hi I have a 50cc derbi pro 2011, i have taken off the restrictor plate, do you know if you are supposed to raise the jet or lower the jet? How does the bike feel. I ride around the University of Florida and would like just a little more acceleration and speed. Hi Adam, Great engine, lots of parts available for it.

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