Hi G, Sorry only now saw your comment. Does it rev up cleanly or are there problems? Thanks, Hi Arrie, Have you gone through the article and checked which of the restrictions apply to your model? Thanks shaun. Do you have a 125cc scooter and don't know how to get more performance out of it? Anyway the engine still bogs down after the initial acceleration, in fact it has the opposite of the very sharp 2 stroke acceleration I was used to with my previous 96 Piaggio. Derbi has Minarelli engines I believe. Count the teeth on the front cogwheel and and get 1 size bigger one (means one more tooth there). i too have a neos YH50 2011 and have noticed someone with the same annoying problem, my scooter is restricted to 29mph it dangerous and embarrassing especially when cyclist pass you.if i could get another 5/10 mph i would be happy. 4. Hi Daniel. wedding ?) Are there other easy mods that would give me the same results? Peace-out! Now although his nifty is noticeably smaller in size to mine, Im having to push myself off when starting up even the smallest of inclines, my god i went to my grandmothers the other day an she lives on a fairly steep hill an as i was leaving i couldnt even get the bike to move up hill with me on it! The intake manifold needs to be replaced when using a bigger carburator. The electronically limited CDI is one of the few restrictions that does not affect the overall engine performance over time. How does the bike feel. Those restrictions from the manufacturer are kind of funny in Colorado. Complicating the issue further still are derestrictions and modifications. These restrictions are not stock and therefore need to be installed by the vendor of the scooter. But it goes 35 mostly and less often it hits 40. I appreciate it that you like it so much. Hey great Blog I Understand the limits and everything at the time, I just got a TaoTao Zummer 2014 50cc it has a limit at 40mph, but here in florida if you go Slow, you probably going to get run over. might have gotten ahead of myself here but just picked up a suzuki ts125x as a first geared project, as never ridden one b4, and am having trouble finding the relevant service manuals and was wondering if you could point me in the right direction? Hi Daniel, The bike runs the same whether I fit the standard CDI or the unrestricted CDI. No, usually not. the bike is in pieces and needs to be rebuilt from the ground up, so i generally need to know where everything goes including wiring diagrams? All that is needed is a little grinder (ideally Dremel, Proxxon, or other micro grinders). ;), On Google, this found the correct schematics: gy6 cdi mod For practical intents and purposes, unless you know a lot about electronics and EXACTLY the schematic of yours, CDIs are pretty hard to clone and even harder to mod. 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. 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. I have cleaned the carb out but I have not changed the main jet or the piece that connects the carb to the engine. The alterations and products available have the potential to increase your average speed by one to three miles per hour each. A 125 2 stroke might go faster but the 125 4 stroke should top out around 60 to 65 but will not last very long without a lot of work if you run it at those speeds. 2. I suggest to not modify the air filter or cut out parts. Or more common sense language: These engines all need mostly the same timing because theyre all GY6 clones! One is to induce a turbo. ( I noticed you mentioed Here in Germany ) And was hoping you could tell me where I can find out information regarding what is or isnt legal in German ? In return, as a sign of respect for finally organizing the mass of de-fragmented scooter info in my head, i will recommend visiting this page in every forum im listed with. Best Overall. Mostly the complex air routing of air filter increases filtering performance therefore allowing the engine to perform well under any conditions (be it a heavy monsun in India or a sandstorm in the desert). If possible a torque wrench should be used when tightening the nut at 40-50nm depending on your scooter model. 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). There are heavy fines and you might loose your license when get caught or involved in an accident! Hi, I have an aprillia area 51 which you hav probs seen, they are quite a big moped for a 50cc, 100kg dry weight. 2023 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Unfortunately after a long-long time checking here and there, trying to find an unrestricted CDI for my scooter I couldnt even find any info not only about that but also about my engine in general. That will limit your top speed. And yes, China Scooters aint so good, a Piaggio or Japanese model is certainly less of a hassle :-/, Im curious, also. Magnum tuning sells a programmable rev limiter for $165. It will increase speed to about 35-40 I suppose, but wont be much of an improvement when going up hill. Hi, This sounds like your rollers in the variator are a bit too heavy. Got to thinkin bout rollers in vario. This makes it easier to find and remove the restrictions. Swap kits plus motor cost about 5-600$ and gets you up to about 6-70mph afaik. Will a bigger carb make my bike faster? would this be a good or bad idea. Examples for these parts are: electronically limited CDIs, diameter restricted inlet manifolds and increased length exhaust manifolds. Ps that should have been a post not a reply?! Daniel, I have a new Italkit 70cc cylinder kit for a Aprilia Morini engine. 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. Thank you very much. BELT (default width = TBA)(verified width = TBA) never thought about it being too narrow?! Will they need to do any carby adjustments, upsizing the main jet etc ? 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. Please be a little more specific as to the type of modification(s) and the reason(s) why. Hi Kimmy, Nice, this sounds good! This will cut down on wind resistance. Would this simply be a case of wear-an-tear? 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. Would love to get more and more tips from you! The restriction definitely does not lie in the front pully wheel because there is no restrictive washer in there, i have checked. Some allow riding a scooter without a drivers license and others have multiple different licenses for various engine sizes. They practically could be made entirely from mechanical devices like cams no ICs and only a few switches (transistors/SCRs). I wrote to Racing planet but they do not support this bike. I currently have the pdf manuals: 1) Suzuki TS125 Service Manual 2) Yamaha_DT200_97(4AN8) [french version], And am watching the videos @: 1) http://www.youtube.com/playlist?list=PLmezqKXGAxLu-w1_5a7uPFAfijn4dffvX, The manuals are useless but the videos, altho for the YZ125, show me the basics. Either by air intake or by not allowing the full opening of the throttle. Another way to speed up your scooter is to adjust the gears. This can be accomplished by either drilling holes into the air intake (located above the variator case) or by removing the intake altogether. Hi, No, usually the stock mainjet is ok for derestricting. We're always willing to return your call if you have questions. Can you please help me with tips on making it go faster? Im certain it has to do with the mainjet. I bet most bikes use AC CDIs for example. I was looking here, for info just to get the bike performing to the levels it would in a higher-pressure, warmer climate, with a lack of hills with 10% inclines. You can drill or poke holes into the intake with any size drill bit or awl, as it is non-rigid plastic. Basically, tiles are placed on a surface and the spacing in between tiles is filled using a powder called grout. Is there any chance that the cdi is running a weird program? When the air/petrol mix supply is restricted the engine cannot perform at its full power. thanks shaun. Hi, It is actually a Chinese scooter, not a Japanese. Welcome to Part 1: How to derestrict a 50cc scooter. At JCosta we are specialists in performance elements for scooters always ensuring a correct functioning and the integrity of your vehicle. We could say that it is the equivalent of changing the carburetor, but for an injection motorcycle. A derestricted CDI is not a problem at all. The throttle opening restriction prevents the rider to open the carburator completely. His work has appeared in The Penn, The Antithesis, New Growth Arts Review" and Deek magazine. Easiest is to swap the cylinder with a racing kit, like the Stage6 Sport Pro! Best, Daniel. Am lookin into buyin an unrestricted one at the mo, seems a lot of people buyin em on eBay an buyin the wrong ones. 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. Hi, I live in Spain and my 50cc scooter has just failed its test because it goes too fast :)) There doesnt seem to be a single article to tell me how to restrict it. The ring also grinds into the aluminium of the variomatic over time causing it to break. I want more accelerationI weigh about 185lbs Can you please give me your thoughts. Fast vehicles are dangerous. Thanks so much for your comment! This is probably somewhere around 7-800rpm. How to Make a Honda Vision Moped Go Faster. Hi there I have just bought myself a 2008 generic cracker 50cc been driving about on it and it is going way too slow on flats i am reaching about 25 mph tops and I really need to do something about this as I am getting left wayyy behind by other people on 50ccs is there anything i can do or get that would give me more speed even to fully top the speed out. Replacement mufflers are universal depending on how large your scooter's engine is, not necessarily on the make and model of the scooter. They are incompatible with other engines on the market and therefore less attractive for Western tuning companies. Hello. minimal damage to seat, fairings, etc but also dmg to air filter, was virtually hangin off where the piping exits the filter heading towards the carb. Removing the restriction does not require any welding. Hi Dan, What do you know about restrictions on SYM jets port 50x 2013, A catalyst has to operate at a high temperature to perform in its intended way. What do you think about derestricting the engine? If you are interested in topic: earn online money by typing keyboarding games you should read about Bucksflooder first, OK, Daniel My Chinese 50cc 4 stroke scooter already hauls ass Sort of. You take the quartz from your cdi and solder it onto this device, that then gets soldered to the original quartz posts. Usually when scooters are restricted to 25kmh there are additional restrictions over the factory restrictions in place! How about TGB Tapo 50, what/where are the restrictions? 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. You can make your four stroke scooter faster by installing a number of products or making one of a handful of aftermarket alterations. Whilst it does not directly restrict engine speed it is still recommended to remove the catalyst when tuning a scooter. The Yamaha Minarelli engines have a dummy pipe and a variator ring applied, similar to the Piaggio 2 Strokes. }:). Its given to me as a company vehicle, so i only want to derestrict it, because quite honestly the lack of performance scares me more than my Ninja, and its definitely got more go in it than Honda is giving me from the factory. Whilst running & idol my revs wont sit still. Did I say funny? The local dealer is really uncooperative and refuses to provide any info on the restriction itself (i.e. Can you give me some idea about Scooter vespa LX50 4T, engene code C389M. You should be happy that it goes 35. The safest way to block the crankshaft is to buy the special blocking tool. 40mph would be great! You can try squeezing out a bit more by modifying the stock airfilter. Drill holes anywhere on outer wall of the intake. Thanks in advance. Get a tuning variator (Malossi Multivar or Polini) as this will allow for increased revs and better adjustment of the transmission using lighter rollers. Top of the range in every sense really! If its whiteish, its too lean and needs a bigger jet! This will help in clarifying my understanding of the CDI, as im only JUST learning how it functions. Thank you for the information combined in such a nice article! Open up the variator system, remove the front pulley wheel and pull the washer off of the front pulley rod by hand. Tho, you need special hardware to do this, like a dremel and grinders. A stock carburator usually has a diameter of 12mm. Hi Daniel, I just had a read of your de restriction page and it was very helpful. These restrictions are usually provided by third parties which means it is not a restriction applied by the manufacturer of the scooter but a kit bought from a company that specialises in restricting scooters to comply with local drivers license laws. 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. nothing illegal in racing besides the unburnt fuel fume coming out the pipe smells terrific and thats what were after. Could I run the scooter without a thermostat or would you not recomend doing that. This can be accomplished by either drilling holes into the air intake (located above the variator case) or by removing the intake altogether. Cheap replacement manifolds can be found on eBay for around 15. We're always willing to return your call if you have questions. Im too keen about increasing the performance of my scooter. But as my name suggests, i am still relatively new to all this, and so follows the first of my quandaries, Still with the nifty (JC 50 QT-20 sudoku) http://www.mopo.fi/ajoneuvot.php?ajn=21&merkki=3, No dummy pipe fitted, unsure bout other exhaust ress as no weldin equip available, vario (? Swap out your scooter's current muffler. By doing those few things you will have an extremely noticeable increase in power. Certainly too heavy rollers. In most cases, your bike won't even start or idle roughly . List of questions still remain unanswered tho! I just cant wrap my head around a carb getting to much air Really Lol Thanks. 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. Under inflated tires will slow your scooter down significantly. Also have a look for the exhaust restirctions. P.S. The piston goes up, compressing the air/fuel mixture. Buying an unrestricted CDI overcomes this limitation. If it revs higher than 8000rpm you're don't have a restricted CDI in place. The diameter restriction is often found on street legal after market exhausts (Stage6 Replica, Yasuni Z, LeoVince, Tecnigas, etc.). Anyone have a 2014 Piaggio Fly 50 4T that is derestricted? I have had a problem with the auto choke as the bike is hard to start and does not rev slightly higher when first started but seems ok when it warms up. Any idea what the top speed would be with a un-restricted CDI? Once the variomatic nut is removed simply take out the ring that is sitting in between the two pulleys. The kit mostly contains of an electronically limited CDI and some other parts (removal of the pillion seat, cylinder head spacer to decrease compression, etc). Ive got a 1984 honda nh125 / 1999 af28 dio you will have to see it to get what I mean but the problem is for me that it is only getting up to 1/2 the speed that the specks say it can reach and thats after having a few aftermarket parts can you help please. Normally unrestricting doesnt require any settings changes at all, so you should be good to go. Derestricting the scooter will increase performance considerably allowing for a much faster acceleration and also a higher top speed (usually about 75km/h). Here is my questioni dont understand how removing the air box will cause the engine to bog down bad It wont take the gas like it did with the restrictive air box Im stumped.I placed a piece of tape over the intake that connected to the air box and that fixed the problem. Therefore, we will stick to those modifications that comply with current regulations and do not pose a problem for you, your insurer or other road users. Hi, Sure but I need some more details. Sorry was mistake in cdi code, I have ordered cdi ducati 639978. Piaggio engines usually have the dummy pipe and the variator ring applied. You will find a lot of information on those on my site :), I have found that on Tao Tao Scooters and Roketa, as well as most other Chinese scooters too; that removing the black plastic plate between the cylinder head and intake manifold greatly increases the power of the scooter, that combined with removing the air box, blocking off the emissions system with a vacuum cap on the intake manifold, replacing the main jet with a #95 jet and installing a UNI Filter is a cheap and extremely effective way of getting tons more power out of your engine. You would need to check what the default width of the belt is, and use a gauge to verify this (or better buy a new belt right away, but you still need to know the size) 3. You will then remove each pulley wheel by unscrewing the centre bolt holding them in place. This modification is more often done for aesthetics and sound than for performance, but if you are looking to increase a little the performance of the bike without modifying anything mechanically and also give another look to your scooter, this is your option. Youre right it is difficult! Not sure I how to increase the performance of this type of engine , been looking at all of performance heads and cylinders, carburetors, transmissions, etc. You can remove old mortar with the chisel and hammer method also. Could it be the same OM cdi with built in speed limiter? Cart. It is attached to the system by a pin that is tightened into place with a small bolt. many ways to do that. I've created a Patreon page if you'd like to contribute to this and future projects athttps://www.patreon.com/brianmdiy Thank you!Side Gap A Spark PlugSimila. It might be the case that your gears are simply to short and you need to install longer ones! Here, just the thinner air does a number on your effective HP. Great website. I wrote this article with the goal, of having a complete overview about the different forms of restrictions applied to 50cc engines nowadays. Weve derestricted by buying the modded cdi,when opening up to full throttle it only revs up to 9000 rpm then backs down to 8000 and keeps alternating between the two,you can get past it by adjusting how much throttle you give it but if you give it too much it bogs. Throttle opening and air supply restrictions are often found on scooter carburators in order to restrict performance. I have ready that changin the main carb valve for a 60 valve is a good option. Also make sure that youre main jet is choosen correctly. Lexmoto, Sym, Sinnis, Direct Bikes, Keeway, Kymco etc Apparently they are built for maximum fuel efficiency and to not go faster than 30mph. We empower you to efficiently solve each new challenge and make your life better and easier. How to de-restrict/de-limit a 50cc Euro 4 GY6 (Chineese) moped. Hi, I am in the process of restricting my keeway fact 50. You will be happy to hear that I am currently working on the relaunch of Tuningmatters.com. We use cookies to ensure that we give you the best experience on our website. The only thing that happens is that it allows to rev the engine higher. Sure, I can reach 60kph now, but getting to 40kph is a pain. A catalyst has to operate at a high temperature to perform in its intended way. have you done any other changes besides the CDI? Hi mate I have a Kawasaki j125 limited edition abs and would like to gain a bit more power I have a arrow exhaust full system on it already its a 66plate and done 3000 miles what can I do to my bike to get more power out of it without do I g damage to the engine, I must say you have very interesting articles here. Some people say these routing channels limit air flow and therefore act as a restriction. Abbigliamento, Caschi e Accessori Moto. But there are a lot of variables here that affect belt life. Hey Shaun, Yes, this sounds like the gears are too short! from Piaggio). 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. One of the advantages of installing a performance variator on our scooter is that we can modify the performance according to our needs. ROLLERS (weight: TBA) My bro the mechanic, so to speak, who grew up fixin scooters is my only source of experience in this field and i ask him bout anythin first, but when i asked him bout the rollers bein too small an affectin the gs on the plates resulting in not fully closin, he looked at me with a look as to say what $h|t is he chattin and replied with an answer that suggests that any weight rollers should automatically fully close the plates And when it was in the garage for its MOT last week I asked the mech the same Q and got the opposite answer!
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