Best, Daniel, Are there washers on the needle valve that can be moved around to increase speed. All that is needed is a little grinder (ideally Dremel, Proxxon, or other micro grinders). Open up the variator system, remove the front pulley wheel and pull the washer off of the front pulley rod by hand. how DO you tell a chink bike from a jap? It also has a hydraulic caliper at the front that chomps down on a 200 mm disc. Simply remove the limiter and you will be able to fully open the slider. Open up the variator system, remove the front pulley wheel and pull the washer off of the front pulley rod by hand. However, sometimes the manifold is even to small for the stock carburator. Is it only nessesary to change this if I am adding a performance exhaust?? My question is my bike seems like it loses power or acceleration. Russell. The throttle opening restriction prevents the rider to open the carburator completely. Most important is the wiring diagrams tho, as the loom i have for it is seperate from the bike and has wires that are cut and need replacing! Thank you. Have a look whats hooked up to the battery and the stock cdi. 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. CDI Obviously pink wire had no effect, but would i be right in deducing that de-restricted CDIs have only 5 wires regardless of the pin count? The problem Im having when I crank it up and rev it up fast it cuts off and I idle it and it still doing it. This page has stopped me dead in my tracks and made me re-evaluate everything i thought i knew about scooters! Best, Daniel. Search for: Murgrabias tools go viral. 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. Have a look on eBay for the proper blocking tools available for your scooter. There is two things you can do: 1. Derestricting the scooter will increase performance considerably allowing for a much faster acceleration and also a higher top speed (usually about 75km/h). Hi I was looking through these posts and it seemed interesting! Get a tuning variator (Malossi Multivar or Polini) as this will allow for increased revs and better adjustment of the transmission using lighter rollers. 90 on a stock engine is way too big! It costs only a few bucks and will save you a lot of trouble. This is probably somewhere around 7-800rpm. 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. Use an impact wrench to do this. 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? I have searched on ALOT of websites, and i havent found a single derestricted CDI for my Bullet RS. any info on this would be helpfull, i am mechanically minded. 2. You want a solid 75 to . The only parts acceptable to remove from an air filter are diameter restricting nozzles as pictured below. I tried fitting the old Aprilia thermostat into the Italkit cylinder head and it fit, but when I tried to put it together I noticed that the thermostat is too long to fit into the cylinder and let the head seal to the cylinder. This is often contradictory to the speed limit requirement as fast accelerating scooters also reach high top speeds. All-in-all. Drops in idle are often related to dirt in the carb. The filter is one of the cheapest components of a 125cc motorcycle but one of the most important. If so, then the rollers are too heavy. 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 ? ) Am lookin into buyin an unrestricted one at the mo, seems a lot of people buyin em on eBay an buyin the wrong ones. For example, mufflers for 50cc scooters can be installed on any 50cc scooters. Mhm, it sounds like a carb issue then. When reassembling the variomatic the crankshaft nut should be secured using Loctite (medium) or a similar threadlocking adhesive. Is the CDI the only restriction i should worry about? Hey Shaun, No pulley on bikes with gears! Otherwise the carburator can not work at its maximum performance. Hi Bryan, Congrats on the purchase :) Most Asian scooters have a restricted CDI, which means they wont go faster, even when going downhill. However, I would like to reach atleast 35mph. Do you know what engine it has? Tho, you need special hardware to do this, like a dremel and grinders. Any insight would be appreciated as I cant seem to find a legit answer anywhere! Best Overall. This will cut down on wind resistance. Im certain it has to do with the mainjet. Is it going faster downhill? Best parts to make your 4 stroke scooter faster , hands on reviewsFollow me on twitter@mopedtuninghelp Your CDI is restricted and does not allow to exceed a certain rpm (VERY COMMON ON CHINESE SCOOTERS) 2. Almost all China engines have the limited CDI installed. 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? His work has appeared in The Penn, The Antithesis, New Growth Arts Review" and Deek magazine. No, usually not. The new page will be a lot easier to navigate and community features will be much improved. Those usually come with a variator ring, and a deadpipe on the exhaust. After doing the above jobs i still noticed no further top end addition, although i did solve the bogging issue through the acceleration range. To stroke an engine, a tuner relocates the big-end bearing further outboard on the crank halves. Derestricting a scooter makes it faster and therefore more dangerous to ride. Coleman Powersports JL50QT-14 49cc Moped. Here, just the thinner air does a number on your effective HP. How to get massive traffic? However, this will not make your scooter faster, but only allow it to rev higher. First of all, you must know the legal framework and regulations of your country so that it does not affect your emissions or limit your driving license. I have cleaned the carb before I re-fitted it, cheers colin. 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. Here's an easy way to understand how an engine creates power. In most cases, the connecting rod is shortened the same distance that the big end bearing is moved. 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. no part changed or anything. wedding ?) Hi Richard Is that a 4st or 2st model? It will increase speed to about 35-40 I suppose, but wont be much of an improvement when going up hill. Thus your top speed will increase. 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! Complicating the issue further still are derestrictions and modifications. Thank you for the info and hope to help some other people that have the same desire of better speed. One of the advantages of installing a performance variator on our scooter is that we can modify the performance according to our needs. Is the rev increasing then? Maybe the problem is much more with the cdi. Removing the restriction does not require any welding. At least YOU have an understanding of the operation & function of the parts you talk about, and describe them in a manner that is easy to comprehend. You take the quartz from your cdi and solder it onto this device, that then gets soldered to the original quartz posts. We could say that it is the equivalent of changing the carburetor, but for an injection motorcycle. Could I run the scooter without a thermostat or would you not recomend doing that. The cooler alternative imho is to swap with a Minarelli 50cc engine as its 2-Stroke, but thats just me :). Lexmoto, Sym, Sinnis, Direct Bikes, Keeway, Kymco etc I bet most bikes use AC CDIs for example. Hi Dylan, Unfortunately Honda makes their very own engines just for their scooters. 2023 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. You will need to buy a new one here. E.g. Out at half throttle anybody know why. It is obviously restricted somewhere, do you know where the restriction is and possibly how to remove it? Disengage the kickstart from the variator system. Hi Daniel. Id like some help on how to get the moped to reach higher speeds. If it revs higher than 8000rpm you're don't have a restricted CDI in place. P.S. I have ordered new cdi (602882M083), changed it, but without any change, the same speed -max25/km/h. Do you have any tips for me on how to derestrict it and/or improve performance. They are incompatible with other engines on the market and therefore less attractive for Western tuning companies. The exhaust restriction is applied to most scooters and can be easily removed. Consult your owner's manual and a motorcycle or scooter mechanic or salesperson to determine what type of replacement muffler system you should purchase and install. 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. Even for someone like me who today, for the first time, had a go at de-restricting my variator with little success. This hose is needed to keep the catalyst clean. i believe the vario roller weights need increasing is this correct and to what sort of weight ? have you done any other changes besides the CDI? before i noticed this i was getting a good 45mph [Level Road], after i noticed i made a judgement call to seal it best i could til can afford new one, so when fully sealed max mph is reduced to 30-33 [LR]. Hi Theodor, Sorry for the late reply. I really struggle for information about my 4 stroke Yamaha aerox 2015. Also, removing catalyst from exhaust is illegal. Can you please help me with tips on making it go faster? Especially the main jet might need to be increased to comply with the higher engine revenues and the increased amount of fresh air supply. Unscrew the fastening bolts located near the connect point between the exhaust pipe and the muffler. I have 2012 Piaggio typhoon 50 and at present it will do approx 65-70kmh max on the flat and 30-50kmh uphill and id really like your advice on how to make my scooter better at travelling up hills. . How to recalibrate a speedometer after a How to Derestrict a 4-Stroke 50CC Scooter, How to increase the speed of a puch moped, How to Change the Exhaust on a 50CC Scooter, How to Replace a Corsa Instrument Cluster. Thus, look for the usual Minarelli restrictions and get an unrestricted CDI! Welding a washer onto the hole should do the job. Get an unrestricted CDI (apparently the stock CDI is limited). If you know of any CDI for my scooter (IF its CDI restricted ofc) PLEASE link it, I live in Europe btw. Pretty sure it has the blind pipe on it. just read the article and reverse engineer the restrictions. Been a bit busy here recently 1. Ive only found CDIs for TGB Akros, Jetfighter etc etc. . 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. I have a 125cc honda Aero, currently it goes around 45-50. 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. 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? They usually require the purchase of an unrestricted part or considerable amount of modification. There are heavy fines and you might loose your license when get caught or involved in an accident! Thanks mate. And after some research i thought a derestricted cdi would help so i bought one, installed, and no change. they all look the same! Have you received a list of what was done in detail? You can remove old mortar with the chisel and hammer method also. I dont have the money to pay a workshop so would appreciate a little advice. Whats the jetting like? You can use the best adsense alternative for any type of website (they approve all websites), for more details simply search in gooogle: boorfes tips monetize your website. I suggest to not modify the air filter or cut out parts. 2-4 are very unusual. UNBURNT so, of course there is no loss of energy. It is an old scooter and it comes out of the hole hard esp when the clutch is cold. Whilst this can be done it is usually not worth the effort. For example here in Germany we have a very popular license class that allows riding 50cc mopeds with the age of 15 already. We recommend that you carefully evaluate your case and needs before making any modifications and, above all, that you purchase high quality components with European homologation. I just cause traffic everywhere i go and in South Africa that is not a good thing. Surely, the Chinese bike companies would know which is most cost-effective. If it needs a CDI then please tell me which one to get and where from. 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. If its whiteish, its too lean and needs a bigger jet! That is, if we do more urban stretches where what we want is more acceleration, we can equip the variator with lower weights so that it revs more and gives us more power at low speeds. It wont even get up hills, yet alone drive at dangerous speeds! Thank you very much. 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. You cant modify them yourself but they are fairly cheap (about 30-40 euros). 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. BELT (default width = TBA)(verified width = TBA) never thought about it being too narrow?! Got to thinkin bout rollers in vario. the top speed is 58kmh,can you give me some suggestion to improve the engine performance? It runs great and has only done 2500 miles but it will only do 29mph flat out even down a hill! This is due to some restricting parts not allowing the engine to perform as it is was designed to. I have a 98 Yamaha that is dangerously slow going up any sort of hill. In addition, it can compromise the integrity of our engine for a use for which it was not manufactured. I dont speak very well English, and I was wondering if you can help me, my moped is a Honda vision 50 cc 4 stroke. I can perhaps get a hardly noticeable increase in power if I use a little (manual) choke. Alter the variator system by installing aftermarket variator pulleys. Once the variomatic nut is removed simply take out the ring that is sitting in between the two pulleys. Removing restrictions and riding a scooter without having a valid drivers license is illegal. 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. This depends on the vendor and manufacturer of your scooter. Currently the scooter has had the carby rejetted and some sort of derestriction on the stock exhaust by the previous owner. Listen, thanks man anyway. List of questions still remain unanswered tho! Any idea what the top speed would be with a un-restricted 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 easiest way to remove the catalyst of your scooter is to replace the stock exhaust with an aftermarket model. The little clip you can find on the needle is for adjusting the fuel / air ratio. I have just purchased a new stock sr50r carby version and Im yet to pick it up, My shop is derestricting it for me by doing the exhaust and the variator ring derestrictions as you have outlined in this great article. Hi, I have an aprillia area 51 which you hav probs seen, they are quite a big moped for a 50cc, 100kg dry weight. Idle Speed This needs to be adjusted when the engine is warm. I just cant wrap my head around a carb getting to much air Really Lol Thanks. The exception to this rule are scooters that have developed proprietary parts (for example, Honda). There might even be a second limiter indtalled! will lube the pulley. Removing restrictions and riding a scooter without having the appropriate drivers license is illegal. Also, this is only valid for the 50cc models. However the top speed of the vehicle needs to be restricted to 25km/h to be compliant. When the air/petrol mix supply is restricted the engine cannot perform at its full power. I have a 2013 Honda Ruckus and I was wondering if derestricting it is possible and is it worth it? Youre right it is difficult! We hope this article has been of interest to you and that you have been able to learn how to increase the power of your 125cc motorcycle. Hi Matus, It seems like the garage replaced the rollers with heavier ones? The new posts are unique and pass the copyscape test. 2015 TuningMatters.comConcept and Development Daniel-Klose.com. And to increase the speed of your electric scooter, all you need to do is replace the battery with a higher voltage one. Which scooter should I start out with. These are the most common restrictions applied to scooters nowadays and probably the main reason why you are reading this post. The carburator is responsible for supplying a mix of petrol and air to the cylinder. 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. What should I check/change/adjust next? ;), 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. Pull the old muffler off of the exhaust system. They practically could be made entirely from mechanical devices like cams no ICs and only a few switches (transistors/SCRs). 3 times today it cut out on me at the lights goin to & from work because the revs dropped too low. According to my official papers the engine is NS-50F. There's a quartz on a chip like in a watch that limits the rpms to 8750 (39mph for Japan). 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. It usually is about 5mm thick. Hi Marco, The Honda 4 Stroke engines are not restricted in the common way. 2. Scooter Dealers, The Good and The Bad. Please note: It is not possible to derestrict the CDI by yourself. Therefore, we can say that we will gain about 2hp (depending on the model) complying with all regulations since we are not modifying the power of the engine. 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. Daniel, I have a new Italkit 70cc cylinder kit for a Aprilia Morini engine. also how would I go about finding an unrestricted 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. 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? Hi G, Sorry only now saw your comment. Too light and the engine will overrev, too heavy and the engine wont rev enough when accelerating out of corners. 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. Sure, I can reach 60kph now, but getting to 40kph is a pain. You basically need an oscillator, a way to control its speed, a way to control duty, and advance phase(advance timing in ECU terms)? Get involved in the comments, or post to the forum to make this page more fun for everyone. 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. 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. Count the teeth on the front cogwheel and and get 1 size bigger one (means one more tooth there). 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). Hi i want to derestrict my 2 stroke 50cc scooter it is a Honda Hero Winner. Alter the variator system by removing the restricting washer underneath the front pulley wheel. Do you know much about where the restrictions in these lie and how id go about removing them? If possible a torque wrench should be used when tightening the nut at 40-50nm depending on your scooter model. They come with a speed restricted engine that lets you touch a maximum of 30mph or 48kmph. Easiest is to swap the cylinder with a racing kit, like the Stage6 Sport Pro! currently running at way too slow and really need the help. Hi, Sure but I need some more details. Im an under age scooter rider from India. Alternatively it is also possible to buy unrestricted exhaust manifolds (e.g. A 50cc two stroke that can get a minimum of 40-45 mph with minimum work (ie, simple derestricting). 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. Hello. The alterations and products available have the potential to increase your average speed by one to three miles per hour each. Some catalyst exhausts have a hose connected to the transmission housing (Piaggio). i just personally think they look and i think it would look cool to putt around town on. The Yamaha Minarelli engines have a dummy pipe and a variator ring applied, similar to the Piaggio 2 Strokes. I know i cant half go on, but youve bin a god send in helping me understand this as a greenhorn, theres just so much to take in with so little explanation other than here. 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. To emphasize that with a performance variator we are not going to increase the horsepower of the bike, but we will modify the power curve and get all the horses of the scooter to reach our wheel. Hi Russell, Those newer 4St Minarellis all have a CDI restriction applied. Whether you need to fix, build, create or learn, eHow gives you practical solutions to the problems life throws at you. The panel says its restricted to 30 And my question is that i would like to increases the speed more than 30, at least to 40 because going up the hill it goes to 20, and when I am caring one bag of shopping its more slow. Or will it still make a difference to change it with the stock exhaust. At JCosta we are specialists in performance elements for scooters always ensuring a correct functioning and the integrity of your vehicle. ive just derestricted my sx1 and its capable of 90km the only problem is it wont pull off the line. Peace-out! It reaches 45 on the flat (even with the variator restriction), but will slow to under 20 on even a moderate gradient. If there is no distance ring between the two vario plates and the belt does not reach the top, this could have several reasons. Cart. Hello all. Hey, I have a taotao racer and idk which wire to pull to derestrict it if you can text me@ 302-272-2012. Does it make strange noises? 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. Would really like to see it. Remove that and you will get some more top end. 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. 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. Altogether I recommend to get another (newer) scooter model as tuning parts for these old Hondas are very expensive if you can find any at all :-/. 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! These are the good restrictions. Great website. 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. Hi, No, usually the stock mainjet is ok for derestricting. The resulting hole in the exhaust needs to be closed. I meant pointless. No risk for engine damage or anything! When buying an already restricted scooter make sure to receive all the parts needed to derestrict the scooter again. I assume it is a used scooter, therefore I would check these things first: Hi Daniel, I have a lexmoto lsm 50 with a 90cc big bore kit I have changed the main jet to a 105 that was recommended by a motorcycle shop and have changed the cdi to a full power one but the bike still tops out at 30 mph is there any other ways of restricting it I can look for. Thanks Lee. 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. 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. I believe that I have a restricted CDI. Hi Adam, Great engine, lots of parts available for it. By good I mean these can be removed easily without spending a single penny (given the right tools). These restrictions are not stock and therefore need to be installed by the vendor of the scooter. Hi, It is actually a Chinese scooter, not a Japanese. Maybe 0.5-0.8g less! Please be a little more specific as to the type of modification(s) and the reason(s) why. Suffice to say I was put to shame by my little bro for the first time in my life as he out-done me on both top-end and acceleration. There are 24 to 48-voltage batteries available in the market. There are some other exhaust restrictions. Thanks for the help have ordered some new sprockets thanks shaun, Hi, I just got my Vespa Primavera 50 2T derestricted in certified Vespa garage, but on my way home I noticed that acceleration isnt what it used to be. We use cookies to ensure that we give you the best experience on our website. it is very easy to slow a machine down. Will they need to do any carby adjustments, upsizing the main jet etc ? What do you think about derestricting the engine? as is the carb. Thats what I meant by being unable to modify them yourself :) 2. Can you get a vespa lx50 derestricted or something to make it faster. A derestricted CDI is not a problem at all.
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