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. In order to remove the dummy pipe simply cut off the pipe with a handsaw or a micro grinder. Can you double check with them? Filed Under: Performance Tagged With: faster , mod , modifications , modify , performance , racing , speed , top speed , torque , upgrade just read the article and reverse engineer the restrictions. How to de-restrict/de-limit a 50cc Euro 4 GY6 (Chineese) moped. What kind, where, how many etc). 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. How to Make a Honda Vision Moped Go Faster. Alter the variator system by removing the restricting washer underneath the front pulley wheel. 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. To stroke an engine, a tuner relocates the big-end bearing further outboard on the crank halves. 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. Your scooter is electronically limited through the cdi. 2. I dont have the money to pay a workshop so would appreciate a little advice. 5. There are some bigger engine scooters with restrictions but it is very untypical for them to be restricted. I could take on any car on stoplights before, now I feel like Im bogging down the traffic Any idea what may be wrong? 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. more to follow. Larger Air Fuel Mixture + Hotter Spark = Increase Horsepower and Speed 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. Thank you for the info and hope to help some other people that have the same desire of better speed. Got to thinkin bout rollers in vario. At JCosta we are specialists in performance elements for scooters always ensuring a correct functioning and the integrity of your vehicle. Welding a washer onto the hole should do the job. 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. Continutul cosului. Seems it is scooter with max speed 25km/h. The 150cc, air-cooled, 4-stroke engine is . 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. Which parts are necessary to buy to tune up the engine? 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. 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. A stock carburator usually has a diameter of 12mm. Assuming i dont derestrict anything else. 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. 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. How to derestrict a 50cc Scooter TuningMatters.com. They dont carry any parts for it. Derestricting a scooter makes it faster and therefore more dangerous to ride. The Chinese all use CDI restricted Minarelli clones. It is attached to the system by a pin that is tightened into place with a small bolt. 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! . A limiter within the carburator blocks the movement of the slider. Does anyone know what restrictions there are on a Yamaha YN 50 E Neos ? For other brands this might not be the case. 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. I just cant wrap my head around a carb getting to much air Really Lol Thanks. You want a solid 75 to . The kickstart is attached to the variator system by a small . Unscrew the fastening bolts located near the connect point between the exhaust pipe and the muffler. His work has appeared in The Penn, The Antithesis, New Growth Arts Review" and Deek magazine. 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? This is the intake stroke. Restrictions through replaced parts on the other hand cant be simply removed. I need help. Have you had a look to see if there is a restricting collar on the front pulleys? Is it going faster downhill? 50cc scooters are built to offer limited speed and range. Thanks Shaun. In addition, it can compromise the integrity of our engine for a use for which it was not manufactured. [] mph). I wrote this article with the goal, of having a complete overview about the different forms of restrictions applied to 50cc engines nowadays. 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. You can also find variator rings in some engines! 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. 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. Can you take a photo of it? [] RicambiMoto2000.it Ricambi e accessori per scooter e moto. However, this will not make your scooter faster, but only allow it to rev higher. The exception to this rule are scooters that have developed proprietary parts (for example, Honda). what jetsize do you currentlt have installed? There are heavy fines and you might loose your license when get caught or involved in an accident! 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. 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? You can make your four stroke scooter faster by installing a number of products or making one of a handful of aftermarket alterations. 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! have you done any other changes besides the CDI? In oder to stay within the limits but still have a well performing engine various restrictions are applied to the engine so the scooter can receive its road legal certification. Im really stuck with trying to find solution and its getting really frustrating how I cant overcome this stupid problem. The throttle opening restriction prevents the rider to open the carburator completely. The intake manifold needs to be replaced when using a bigger carburator. This can be accomplished by either drilling holes into the air intake (located above the variator case) or by removing the intake altogether. Sure thing to get a caliper and measure from time to time. You need initial traffic only. And it does it very well. Could it be the same OM cdi with built in speed limiter? Have a look whats hooked up to the battery and the stock cdi. 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. It might be the case that your gears are simply to short and you need to install longer ones! the variomatic ring grinds into the aluminium of the variomatic over time causing it to break, or the exhaust restrictions increasing the overall of the engine temperature by blocking the gas flow. Removing the glue will take forever and I think it is unlikely that you are able to free the circuit without breaking it. Whilst this can be done it is usually not worth the effort. 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. Any help would be so welcome. Hi, This sounds like your rollers in the variator are a bit too heavy. Is driving with a derestricted CDi bad for the scooter in anyway? 2015 TuningMatters.comConcept and Development Daniel-Klose.com. Under inflated tires will slow your scooter down significantly. By good I mean these can be removed easily without spending a single penny (given the right tools). Hi, This sounds a bit odd. Would love to get more and more tips from you! No, usually not. They are a good investment and can be used for carburators up to 21mm diameter in size. Hi Bryan, Congrats on the purchase :) Most Asian scooters have a restricted CDI, which means they wont go faster, even when going downhill. Thank you. 40mph would be great! Step 1 Drill holes into your Elite's intake or remove the intake entirely, to increase the airflow into your engine. 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. 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. 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 intake is attached to the scooter by two or three bolts, usually with two attached to the underside of the rear wheel well and one attached to the variator case. Removing the restriction does not require any welding. 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. 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! In most cases derestricting the scooter not only improves the performance of the engine it also allows it to perform better, longer. The air supply restriction is very simple to find. 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. Please Please Please Send all like links to the supplied e-mail address !!! 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. Have a look on eBay for the proper blocking tools available for your scooter. And after some research i thought a derestricted cdi would help so i bought one, installed, and no change. Does it rev up cleanly or are there problems? It does not affect speed or performance. This makes it easier to find and remove the restrictions. Hey Daniel, Do you have any ideas/tips on how to derestrict a 2016 Lance Cabo 50? Welcome to Part 1: How to derestrict a 50cc scooter. The easiest way to remove the catalyst of your scooter is to replace the stock exhaust with an aftermarket model. It usually is about 5mm thick. These restrictions are not stock and therefore need to be installed by the vendor of the scooter. Thanks, Hi Arrie, Have you gone through the article and checked which of the restrictions apply to your model? According to my official papers the engine is NS-50F. A bigger carburetor alone will not make your bike go faster. Ideally have someone to help you holding it in place. My moped is from 2012 please let me know as soon as possible. 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? Fuel ignites with the help of air, so the more clean air that flows into the engine the more combustion you'll get. Hi Lee, This sound indeed weird. Loosen the bolt and pull the pin and you can remove the kickstart from the scooter. 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. Alter the variator system by installing aftermarket variator pulleys. The fastest it will go is about 58km/h and if im lucky 60km/h. Many riders will derestrict their 50cc motorbikes and install performance parts to increase their top speeds. The intake is the black, plastic part on the left side of your scooter above the box (variator system) to which your kickstart is attached. It has a Minarelli 50cc engine. 2-4 are very unusual. Thanks for the information dont have the money right now but its useful to plan with. New spark plug wouldnt hurt neither! Hi Daniel, Thanks for the interesting article. Alter the variator system by removing the restricting washer underneath the front pulley wheel. It is true that, in terms of performance, a 4-stroke scooter will gain between 1hp or 2hp. And where does it sit? I want more accelerationI weigh about 185lbs Can you please give me your thoughts. Hello. 2ndly do you know of any other restrictions? Aftermarket exhausts do not have catalysts for one reason only profit of manufacturers. Hi! If you want a good balance of performance and sound muffling, you would likely pick a more thickly packed muffler. 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 have a 98 Yamaha that is dangerously slow going up any sort of hill. Will they need to do any carby adjustments, upsizing the main jet etc ? My parents got me a scooter just because Im not licensed to ride motorbikes. 3. It is one of the most common modifications that you can find, and also one of the simplest. A 50cc two stroke that can get a minimum of 40-45 mph with minimum work (ie, simple derestricting). 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 :). any info on this would be helpfull, i am mechanically minded. Open up the variator system. 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. Please be a little more specific as to the type of modification(s) and the reason(s) why. What also helps most likely is installing slighlty lighter vario sliders. the top speed is 58kmh,can you give me some suggestion to improve the engine performance? p.s i have a full bike licsence and also have a VFR800 slightly faster than the neos. 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. 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 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 belt is too narrow. In the case of the Spanish territory, you should know that a person with a B license (3 years old) or with an A1 license is limited to drive a motorcycle up to 125cc and 11kW, which translated to horsepower is 15hp, with a weight/power ratio of 0.1 kW/kg.
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