At JCosta we are specialists in performance elements for scooters always ensuring a correct functioning and the integrity of your vehicle. The exhaust restriction is applied to most scooters and can be easily removed. How to derestrict a 50cc Scooter TuningMatters.com. Did I say funny? The only thing that happens is that it allows to rev the engine higher. A catalyst has to operate at a high temperature to perform in its intended way. List of questions still remain unanswered tho! Alternatively you can attach the exhaust of the same scooter model without catalyst (Minarelli and Piaggio engines have usually equivalent models with a non-cat exhaust). also how would I go about finding an unrestricted CDI? Sure thing to get a caliper and measure from time to time. 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. the thing is that the bike does not respond as I would like it to respond, it is stock. They follow a pretty simple (and thus easy to identify) formula, obviously. You will then remove each pulley wheel by unscrewing the centre bolt holding them in place. Place your scooter on the main stand and make sure it's secure. For example some stock exhausts use a very long exhaust manifold that decreases the gas flow and therefore resulting in reduced performance. Rollers Not sure what you mech meant, but you need the right rollers for your enigne configuration. Thus, look for the usual Minarelli restrictions and get an unrestricted CDI! Got to thinkin bout rollers in vario. 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? So you took the clutch a part and now it only goes half speed? To stroke an engine, a tuner relocates the big-end bearing further outboard on the crank halves. Do you know what engine it has? Do you have any tips for me on how to derestrict it and/or improve performance. 4. Hi Richard Is that a 4st or 2st model? I have ready that changin the main carb valve for a 60 valve is a good option. will lube the pulley. Always ride within your limits and be aware that you might need a different drivers license when a scooter exceeds a certain speed or engine capacity. by removing it or even simply filing the nylon part away i found the carb butterfly opened fully and not half way as previously. It is not limited CDI as I have run 91-92k rpm at over 50mph. Also make sure that youre main jet is choosen correctly. http://www.mopo.fi/ajoneuvot.php?ajn=21&merkki=3, http://www.youtube.com/watch?v=vP7OnJZGcCc, http://www.jincheng-global.com/zdw3.asp?prmo=JC50QT-20&tyno=A&ptty=A02, How To Maintain A Scooter | TuningMatters.com, http://www.youtube.com/playlist?list=PLmezqKXGAxLu-w1_5a7uPFAfijn4dffvX, , How Fast Is 50cc and 125cc? Step 2 Open up the variator system. Never even considered opening it up and by-passing the restriction, which is, im guessing, the mod youre talkin bout!? The air supply restriction is very simple to find. Archivi Products Biondi Accessori. We're always willing to return your call if you have questions. If you want to derestrict in disguise you can weld the dummy pipe back onto the exhaust on top of the washer :). Is the rev increasing then? so it wont join as the holes for the bolts need to be moved round? 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. You need initial traffic only. We're always willing to return your call if you have questions. They practically could be made entirely from mechanical devices like cams no ICs and only a few switches (transistors/SCRs). It does not affect speed or performance. Hi Adam, Great engine, lots of parts available for it. More fresh air in the mix increases the temperature during the ignition process. [] RicambiMoto2000.it Ricambi e accessori per scooter e moto. the top speed is 58kmh,can you give me some suggestion to improve the engine performance? I have ordered new cdi (602882M083), changed it, but without any change, the same speed -max25/km/h. You can also find variator rings in some engines! Will replace with new one anyway for DIRECT comparison for future reference. 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. Simply remove the air filter hose from your carburator and look out for plates that prevent the air flowing through your carburator when its throttle is opened. Use an impact wrench to do this. 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! A derestricted CDI is not a problem at all. Quieter and Reliable. 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 appreciate it that you like it so much. Not sure if this cost-per-part-to-solder issue is true for simpler devices, though. I tried to adjust the needle in the carb but its non adjustable Clutch locks up at 4200 rpm and revs up to 7800-8000rpm before the variator starts to expand and shift Drops down to 6k and slow to build rpm back up to redline which is 8k. 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. Lexmoto, Sym, Sinnis, Direct Bikes, Keeway, Kymco etc Honda engines are often carburator restricted. If it revs higher than 8000rpm you're don't have a restricted CDI in place. I noticed that the variator roller weights are pretty . Open up the variator system, remove the front pulley wheel and pull the washer off of the front pulley rod by hand. I see that you dont update your page too often. Hi i want to derestrict my 2 stroke 50cc scooter it is a Honda Hero Winner. Please do not cut any wires or try opening the CDI. Its normally more expensive to use more packages, even if the total cost of the chips is more. The carburator is responsible for supplying a mix of petrol and air to the cylinder. Here, just the thinner air does a number on your effective HP. The easiest way to remove the catalyst of your scooter is to replace the stock exhaust with an aftermarket model. 2ndly do you know of any other restrictions? Tho the stock engine wont have the power to rev higher by default. Which parts are necessary to buy to tune up the engine? 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. The exception to this rule are scooters that have developed proprietary parts (for example, Honda). Also, this is only valid for the 50cc models. This should do the job! You should be happy that it goes 35. 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. When reassembling the variomatic the crankshaft nut should be secured using Loctite (medium) or a similar threadlocking adhesive. A 50cc two stroke that can get a minimum of 40-45 mph with minimum work (ie, simple derestricting). 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. 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. Best Overall. 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. If you want a good balance of performance and sound muffling, you would likely pick a more thickly packed muffler. 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. Some people say these routing channels limit air flow and therefore act as a restriction. 90 on a stock engine is way too big! For other brands this might not be the case. Hope these 50cc scooter upgrades help you make your scooter faster. Search for: Murgrabias tools go viral. Thanks shaun. 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. Thanks in advance. 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. It is one of the most common modifications that you can find, and also one of the simplest. Restrictions through replaced parts on the other hand cant be simply removed. E.g. The carb restriction is a big piece of plastic that prevents the carb to open completely. I had to push the frakin thing up to a lesser incline the shame. 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. To modify it, youd need to identify which transistor controls the maximum RPMs, and what components set the frequency at which the transistor stops allowing the oscillator to speed up. 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. It is a bit of an open story if air filter restrictions are really applied. 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. Do you have a 125cc scooter and don't know how to get more performance out of it? This is done by pressing down on the pedal as hard as you can while the scooter is still moving. 1. Tho, it might be that the engine is really just crap and wont go faster even tho its derestricted. 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. This makes it easier to find and remove the restrictions. The scooter most likely has a variator ring installed. 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. This is why statements about higher top []. Almost all China engines have the limited CDI installed. Hi Lee, This sound indeed weird. Currently the scooter has had the carby rejetted and some sort of derestriction on the stock exhaust by the previous owner. Hi Kimmy, Nice, this sounds good! How about TGB Tapo 50, what/where are the restrictions? The other things to do are described in the article. Removing the glue will take forever and I think it is unlikely that you are able to free the circuit without breaking it. The fastest it will go is about 58km/h and if im lucky 60km/h. Hi, I have a yamaha YN50 neos 49cc 2011 4 STROKE scooter. The intake manifold needs to be replaced when using a bigger carburator. it is very easy to slow a machine down. Remove that and you will get some more top end. Normally unrestricting doesnt require any settings changes at all, so you should be good to go. 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? Ultimately it is best to get a 70cc kit and some matching exhaust. 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. 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. 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. Does anyone know what restrictions are on the Lexmoto vienna 50cc. By good I mean these can be removed easily without spending a single penny (given the right tools). But I believe you should replace after every 10.000km. Basically, tiles are placed on a surface and the spacing in between tiles is filled using a powder called grout. Pretty sure it has the blind pipe on it. I can perhaps get a hardly noticeable increase in power if I use a little (manual) choke. If so, then the rollers are too heavy. Install lighter ones and acceleration will be fine again. Thank you for recommending the page and I hope to see you on TuningMatters.com 2.0! If not done correctly the engine might overheat and can be heavily damaged. Rear Pulley I believe the sound comes from either the pulley spring, or the clutch springs. Here's an easy way to understand how an engine creates power. 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. i believe the vario roller weights need increasing is this correct and to what sort of weight ? Is it only nessesary to change this if I am adding a performance exhaust?? Thanks Shaun. This is the compression stroke. Does it rev up cleanly or are there problems? Does it raise the reed valves? either way ill be getin a de-restricted one. Sorry was mistake in cdi code, I have ordered cdi ducati 639978. Many thanks! I really struggle for information about my 4 stroke Yamaha aerox 2015. Your scooter is electronically limited through the cdi. It is true that, in terms of performance, a 4-stroke scooter will gain between 1hp or 2hp. 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.