Although I have zero experience with these seemingly disposable 2 wheelers Everything breaks Lol. My initial worry was that the belt looked like it had too much slack, as if it had been over-stretched, but i know virtually nothing bout em. When i drive on flat surface my moped comes up to 50 KPH and stops there, it sounds like something is stopping the rev because it sounds like drrrrrrr (bad impression but yeah), it sounds like it wants to go faster. They practically could be made entirely from mechanical devices like cams no ICs and only a few switches (transistors/SCRs). In most cases derestricting the scooter not only improves the performance of the engine it also allows it to perform better, longer. in the case of the rollers I finally got my bro the mech to come on a little ride the other day, see hes got a nifty himself (I forget the make an model) and its rapid to say the least and i wanted to see how it compared to mine. Been a bit busy here recently 1. 3. NONE of this explains to me why the belt is not traveling fully up the vario and so allowing the bike to reach its intended potential, or maybe im just missing something thats staring me right in the face and i just dont know to look for it yet? P.S. Even for someone like me who today, for the first time, had a go at de-restricting my variator with little success. This is done by pressing down on the pedal as hard as you can while the scooter is still moving. Aftermarket exhausts do not have catalysts for one reason only profit of manufacturers. by removing it or even simply filing the nylon part away i found the carb butterfly opened fully and not half way as previously. Trikes. 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. 3. Replacement mufflers are universal depending on how large your scooter's engine is, not necessarily on the make and model of the scooter. You cant modify them yourself but they are fairly cheap (about 30-40 euros). What kind, where, how many etc). Im too keen about increasing the performance of my scooter. Hello Daniel! Hi just wondering if you can give me some advice on how to tune my speedfight 1 50cc it has 70cc kit but reaching 45 max Thanks. The belt is too narrow. There might even be a second limiter indtalled! Ive a fairly good understandin of the importance of o2 in the combustion process, and how sealing up the filter hole would invariably lead to a loss in power output, but it is not this that vexes me?! ring previously removed, no slider openin ress, no carb air supply ress, intake manifold size unchecked as further reading required. They are incompatible with other engines on the market and therefore less attractive for Western tuning companies. Mhm normally this sounds like a carb adjustment issue (too big mainjet), but since you run the stock carb it should rather be too lean (too small jet). Can you double check with them? Thank you! Have a look at our articles section. In addition, it can compromise the integrity of our engine for a use for which it was not manufactured. 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. We empower you to efficiently solve each new challenge and make your life better and easier. cant find any info anywhere. However, I would like to reach atleast 35mph. Oh well, sorry for rambling, hopefully youve got a clue about how my moped is restricted, because being LOCKED down in 50 KPH is very annoying. It costs only a few bucks and will save you a lot of trouble. Thanks in advance. On a stock carb (12mm) it should be about 60-65 for a stock engine with a sport exhaust, unless you have modified anything else! Best Overall. Thanks shaun. Hi Theodor, Sorry for the late reply. The restriction definitely does not lie in the front pully wheel because there is no restrictive washer in there, i have checked. Can you give me some idea about Scooter vespa LX50 4T, engene code C389M. Too light and the engine will overrev, too heavy and the engine wont rev enough when accelerating out of corners. Best parts to make your 4 stroke scooter faster , hands on reviewsFollow me on twitter@mopedtuninghelp Heck, it would probably be easy to make a near-universal one given the network theory of economics/engineering that says that over 90% of designs are using at most 10% of components and design choices. Help just had clutch to bits on piaggio nr3 now engine cuts. By good I mean these can be removed easily without spending a single penny (given the right tools). There are heavy fines and you might loose your license when getting caught or involved in an accident! I meant pointless. If, on the other hand, we drive more on highways or interurban roads, we can install higher weights in our variator to achieve more top speed. This is the compression stroke. Larger Air Fuel Mixture + Hotter Spark = Increase Horsepower and Speed 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. The following restrictions can be found on pretty much every scooter sold nowadays and can be split into two categories: Whats meant by added parts? Is driving with a derestricted CDi bad for the scooter in anyway? Just purchase an unrestricted one for 50Euros and everything will be ok! Im bout oleo the vriator racing weight to this model,Do you think i have done it correctly ? That will limit your top speed. Almost all China engines have the limited CDI installed. 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! Enter your email address to subscribe and receive notifications of new posts by email. Its been hard to get thia restricted but I am getting there. lol in all seriousness, though, best of luck at you next inspection. 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. Also, this is only valid for the 50cc models. What should I check/change/adjust next? Apparently they are built for maximum fuel efficiency and to not go faster than 30mph. the variator ring actually damage the variator over time. You can also find variator rings in some engines! from Piaggio). 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. Have a look at our derestriction article to read more about this [], No further news to add as of yet altho did hit 50mph yesterday in the liverpool tunnel (down hill) on my nifty ;). 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. It usually is about 5mm thick. They dont carry any parts for it. Brought to you by Leaf Group Step 1 Detach the kickstart from the variator system. Is your airfilter clean? Frustrated, I left the damn thing alone for a few days, then thinking that the restriction may have something to do with the revs,i remembered a video id downloaded off youTube that mentioned a pink wire, and after hours of collaborative research into it, i was under the assumption that as my CDI was 6 pin with 6 wires, one being predominantly white with a pink stripe, and being located at the pin that leads from the CDI to the stator trigger pulse, that temporarily cutting this wire would fool the bike into thinking it is standing still, and allow you to rev the bike as high as you want!, alas guess what happened when i cut it ;) thats right absolutely JACK $H|T, it wouldnt even start, so reattached wire an starts fine as usual. The intake manifold needs to be replaced when using a bigger carburator. The X-PRO 150cc Adult Moped is everything you could want in a fun, reliable, and compact gas-powered scooter. Increase the air flow to the engine. cheers for the info on the springs makin the noise, wouldnt have bin able to diagnose that myself. Hi Daniel, Thanks for the interesting article. Mhm, it sounds like a carb issue then. 2T engines are polluting much more than 4T. Currently the scooter has had the carby rejetted and some sort of derestriction on the stock exhaust by the previous owner. Best, Daniel. I see what you mean now bout the CDI modification or lack of. When the air/petrol mix supply is restricted the engine cannot perform at its full power. If we decide to do any tuning mods, well have to look into Colorados rules and if we need to get a MC designation on our licenses. Hi Daniel, I just had a read of your de restriction page and it was very helpful. Also, removing catalyst from exhaust is illegal. Here's an easy way to understand how an engine creates power. 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. In theory, it would be possible to black-box reverse-engineer a clone of CDIs based on oscilloscope traces. 2023 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. what manifold do i need to buy? Hi Nigel, Its actually the other way around. Variator weights are so light, that the given engine speed does not produce enough g-fore to pull the variator plates together. Hi, No, usually the stock mainjet is ok for derestricting. 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. Hi Richard Is that a 4st or 2st model? For other brands this might not be the case. If your electric scooter comes with a 24-volt battery, you can find a 48-volt replacement and plug it into the scooter to make it run faster. 2ndly do you know of any other restrictions? Beware as the stock exhausts are usually much more expensive than an aftermarket part and at the end of the day you will buy an aftermarket exhaust anyways when considering tuning as a serious hobby :). 5. make your Scooter Faster by Inducing a Turbo There are a few tricks you can try to make your scooter go faster. Whats the best 50cc moped to derestrict for acceleration and top speed thanks. If it revs higher than 8000rpm you're don't have a restricted CDI in place. There's a quartz on a chip like in a watch that limits the rpms to 8750 (39mph for Japan). 4. Thanks mate. Hi, I have an aprillia area 51 which you hav probs seen, they are quite a big moped for a 50cc, 100kg dry weight. 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. Are there other easy mods that would give me the same results? I own a TGB Bullet RS. Ps that should have been a post not a reply?! Abbigliamento, Caschi e Accessori Moto. Most stock exhaust feature a dummy pipe on the exhaust manifold whereas restricted after market exhausts have a little diameter restriction welded into the down pipe. Best, Daniel, Are there washers on the needle valve that can be moved around to increase speed. Also, run some carb cleaner through the carb and clean the air filter. Petrol is poisonous and causes cancer. A limiter within the carburator blocks the movement of the slider. No risk for engine damage or anything! 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. 50cc scooters are built to offer limited speed and range. It is a NH 125 Honda engine. Thank you for the information combined in such a nice article! Many riders will derestrict their 50cc motorbikes and install performance parts to increase their top speeds. You can drill or poke holes into the intake with any size drill bit or awl, as it is non-rigid plastic. It has a Minarelli 50cc engine. It might be the case that your gears are simply to short and you need to install longer ones! Compare the pressure with the max cold PSI number written on the sidewall of the tire. But I believe you should replace after every 10.000km. 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! Piaggio for example gives full warranty when derestricting the scooter through a certified vendor/repair shop. 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. Buying these usually will cost more than buying a 70cc kit off of ebay and learning how to do it properly will also take a lot of time. [] RicambiMoto2000.it Ricambi e accessori per scooter e moto. To stroke an engine, a tuner relocates the big-end bearing further outboard on the crank halves. The little clip you can find on the needle is for adjusting the fuel / air ratio. If so, then the rollers are too heavy. Maybe 0.5-0.8g less! The kickstart is attached to the variator system by a small . currently running at way too slow and really need the help. Also didnt notice much wear on rollers when last looked but will double check anyway, While I get the weights & measures TBAd above, heres another one for ye. }:). Have you tried going downhill? Anyone have a 2014 Piaggio Fly 50 4T that is derestricted? Step 1 Disassemble the air box and remove the filter. Thanks. This will cut down on wind resistance. We recommend that before buying a new exhaust for your motorcycle, you take into consideration the emissions and road regulations, as our new exhaust must be homologated. And since my place doesnt have enough tuners who can get me increased performance, Im depending on online help to get more power out of my scooter. When reaching a certain engine revenue the limited CDI simply stops the engine from revving any higher by stopping ignition of the spark plug any faster. Hi, This sounds a bit odd. i have a 2009 50cc keeway f-act japanese performance scooter..does it have restrictions and where and what would be the restrictions on it. just read the article and reverse engineer the restrictions. Rev the engine up slowly and check if at some point the engine stops revving for no reason. In most cases, the connecting rod is shortened the same distance that the big end bearing is moved. I have noticed you dont monetize your blog, dont waste your traffic, you can earn extra cash every month. If you aren't, sell it and buy a reputable brand's 2 stroke, it'll automatically be peppier and easy to hop up. . Increase the air flow to the engine. Simply remove the limiter and you will be able to fully open the slider. am reaching 17.5k on the clock an i bet the belt aint bin changed yet so theres another new part for the ever-growing list. My highest was 45 and that was down hill. Thank you for recommending the page and I hope to see you on TuningMatters.com 2.0! Have a look whats hooked up to the battery and the stock cdi. Mine has a top speed of 35mph/56kph. Drops in idle are often related to dirt in the carb. Hi I was looking through these posts and it seemed interesting! Also your insurance might not cover you anymore. His work has appeared in The Penn, The Antithesis, New Growth Arts Review" and Deek magazine. By doing this I increased the top speed with roughly 7mph to 32mph. After doing the above jobs i still noticed no further top end addition, although i did solve the bogging issue through the acceleration range. How to Make a Honda Vision Moped Go Faster. There are a handful of 50cc scooters that can touch top speeds of 60mph, but that's only if you unlock the engine or modify components within the engine. This will help in clarifying my understanding of the CDI, as im only JUST learning how it functions. Hi! And yes, China Scooters aint so good, a Piaggio or Japanese model is certainly less of a hassle :-/, Im curious, also. These are the good restrictions. If its whiteish, its too lean and needs a bigger jet! The 150cc, air-cooled, 4-stroke engine is . All that is needed is a little grinder (ideally Dremel, Proxxon, or other micro grinders). Got to thinkin bout rollers in vario. The other things to do are described in the article. The variomatic ring restriction prevents the engine transmission from reaching its maximum gear ratio, thus limiting the top speed of the engine. Would this simply be a case of wear-an-tear? 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 (? I appreciate it that you like it so much. Install lighter ones and acceleration will be fine again. Under inflated tires will slow your scooter down significantly. Coleman Powersports JL50QT-14 49cc Moped. When buying an already restricted scooter make sure to receive all the parts needed to derestrict the scooter again. Have a look on eBay for the proper blocking tools available for your scooter. 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. The exhaust restriction is applied to most scooters and can be easily removed. Hi, I have a yamaha YN50 neos 49cc 2011 4 STROKE scooter. Along with that I will also explain which parts should be installed first when starting tuning a scooter and which ones need to be replaced when getting more serious. Some also come with a variator ring and the carburator air intake restriction! I have ordered new cdi (602882M083), changed it, but without any change, the same speed -max25/km/h. It is one of the most common modifications that you can find, and also one of the simplest. The kind that had epoxy not to keep moisture out, but human eyes. Best get in touch with your manufacturer or your local scooter shop and ask them if derestricting your engine has an affect on your warranty. Ive built many engines in past years Cars Twin turbo 300zx, Corvettes, Porsche v8 928s4 etcand crotch rockets as well as dirt bikes. When reassembling the variomatic the crankshaft nut should be secured using Loctite (medium) or a similar threadlocking adhesive. 2-4 are very unusual. Derbi has Minarelli engines I believe. it would explain in some manner why there is absolutely on acceleration to speak of when taking off on the damn thing, compared to other niftys Ive rode that take off as fast as a bra in a strip club. Usually when scooters are restricted to 25kmh there are additional restrictions over the factory restrictions in place! The piston goes up, compressing the air/fuel mixture. dont know too much bout them at the mo, but understand the value of their weights acting in relation to the centrifugal force to produce torque on the belt system. hi david i live in pakistan and have a yamaha junoon yd 100 and its cdi has gone faulty.the original is 1.too expensive 2.not availble any where near to me 3.its quality is not good as compared to the original one that came with the bike so it will probs go faulty again.what im thinking is of installing cg 125s cdi and coil with my own bikenow what i wanted to know is what are the disadvantages of having too much spark in the spark plug.i mean im installing a heavy cdi in place of original one, Hi I have this 50cc Pocket bike Im a person that loves to go fast. Derestricting your four-stroke scooter requires you to remove a small washer from the pulley system which transfers energy produced by the engine into the wheels. This depends on the vendor and manufacturer of your scooter. Have you had a look to see if there is a restricting collar on the front pulleys? Thank you. For example, mufflers for 50cc scooters can be installed on any 50cc scooters. I also dont understand your full question. This hose is needed to keep the catalyst clean. And it does it very well. Does it raise the reed valves? There are some other exhaust restrictions. Please Please Please Send all like links to the supplied e-mail address !!! Following your guide I have now removed the variator ring, and looked for the exhaust restriction on the Leo Vince Touring, but it was not present. p.s i have a full bike licsence and also have a VFR800 slightly faster than the neos. How to de-restrict/de-limit a 50cc Euro 4 GY6 (Chineese) moped. Throttle opening and air supply restrictions are often found on scooter carburators in order to restrict performance. I have a 4 stroke 50cc ice bear rocket. Idle Speed This needs to be adjusted when the engine is warm. TBH, if I was to do this properly, Id use a PLL with the appropriate timing diagrams to design a CDI. I have cleaned the carb before I re-fitted it, cheers colin. I just cause traffic everywhere i go and in South Africa that is not a good thing. It also has a hydraulic caliper at the front that chomps down on a 200 mm disc. My question is my bike seems like it loses power or acceleration. These devices follow some kind of voodoo for the average person kind of like the old AC/Heater timer controllers about 25 years ago.
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