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. Hi, Sure but I need some more details. More fresh air in the mix increases the temperature during the ignition process. New spark plug wouldnt hurt neither! In order to remove the dummy pipe simply cut off the pipe with a handsaw or a micro grinder. How to de-restrict/de-limit a 50cc Euro 4 GY6 (Chineese) moped. Got to thinkin bout rollers in vario. These are the most common restrictions applied to scooters nowadays and probably the main reason why you are reading this post. Petrol is poisonous and causes cancer. There are heavy fines and you might loose your license when get caught or involved in an accident! 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 see what you mean now bout the CDI modification or lack of. Please be a little more specific as to the type of modification(s) and the reason(s) why. Hi I was looking through these posts and it seemed interesting! Top of the range in every sense really! I believe that I have a restricted CDI. Hi, I have an aprillia area 51 which you hav probs seen, they are quite a big moped for a 50cc, 100kg dry weight. 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. Fast vehicles are dangerous. 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). Just purchase an unrestricted one for 50Euros and everything will be ok! Does it make strange noises? The Yamaha Minarelli engines have a dummy pipe and a variator ring applied, similar to the Piaggio 2 Strokes. You want a solid 75 to . Or more common sense language: These engines all need mostly the same timing because theyre all GY6 clones! The carburator needs to be adjusted according to the amount of air it is processing. The Chinese all use CDI restricted Minarelli clones. It wont even get up hills, yet alone drive at dangerous speeds! 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. 55+MPH 50cc mods - ProBoards Kymco Super 8 - 4 stroke - more speed | 49ccScoot.com Scooter Forums How to make a 4 stroke scooter faster | eHow UK This can be accomplished by either drilling holes into the air intake (located above the variator case) or by removing the intake altogether. The electronically limited CDI is one of the few restrictions that does not affect the overall engine performance over time. The carb restriction is a big piece of plastic that prevents the carb to open completely. Apparently they are built for maximum fuel efficiency and to not go faster than 30mph. Removing this washer requires minimal mechanical know-how and few tools. We could say that it is the equivalent of changing the carburetor, but for an injection 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. ring previously removed, no slider openin ress, no carb air supply ress, intake manifold size unchecked as further reading required. 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. Hi, Im Daniel I write this blog and love scooters! Id like some help on how to get the moped to reach higher speeds. UNBURNT so, of course there is no loss of energy. This should do the job! Tho the stock engine wont have the power to rev higher by default. Your CDI is restricted and does not allow to exceed a certain rpm (VERY COMMON ON CHINESE SCOOTERS) 2. Derestricting the scooter will increase performance considerably allowing for a much faster acceleration and also a higher top speed (usually about 75km/h). I own a TGB Bullet RS. Is the CDI the only restriction i should worry about? Any advice or info on what I should do to increase my scooters performance especially for the annoying hills would be appreciated. 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 catalyst has to operate at a high temperature to perform in its intended way. whats the carburator size? Thanks so much for your comment! Great website. 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. Removing the variomatic ring is difficult as the variomatic is sitting on the crankshaft which spins when trying to unscrew the nut. Hi Russell, Those newer 4St Minarellis all have a CDI restriction applied. This hose is needed to keep the catalyst clean. How about TGB Tapo 50, what/where are the restrictions? Brought to you by Leaf Group Step 1 Detach the kickstart from the variator system. ;), 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. Usually when scooters are restricted to 25kmh there are additional restrictions over the factory restrictions in place! Have a look at our articles section. Honda Elite 80 Specs and Review Road Sumo How to check if your Scooter CDI is restricted When the catalyst exhaust is being replaced this hose should be removed and the hole in the engine block closed. Derbi has Minarelli engines I believe. Hi, No, usually the stock mainjet is ok for derestricting. This can be accomplished by either drilling holes into the air intake (located above the variator case) or by removing the intake altogether. 2. Best Overall. Thank you very much. How does the bike feel. many ways to do that. What also helps most likely is installing slighlty lighter vario sliders. How to derestrict a 50cc Scooter TuningMatters.com. Im bout oleo the vriator racing weight to this model,Do you think i have done it correctly ? Any help would be so welcome. Do you have any tips for me on how to derestrict it and/or improve performance. Pretty sure it has the blind pipe on it. Out at half throttle anybody know why. cheers for the info on the springs makin the noise, wouldnt have bin able to diagnose that myself. Would really like to see it. Some catalyst exhausts have a hose connected to the transmission housing (Piaggio). Would love to get more and more tips from you! They dont carry any parts for it. 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. it is very easy to slow a machine down. 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. Whether you need to fix, build, create or learn, eHow gives you practical solutions to the problems life throws at you. It has a Minarelli 50cc engine. Thanks shaun. I am new here. Cart. If not done correctly the engine might overheat and can be heavily damaged. Thanks. Hi Matus, It seems like the garage replaced the rollers with heavier ones? 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. The carburator is responsible for supplying a mix of petrol and air to the cylinder. Hey Shaun, Yes, this sounds like the gears are too short! Which scooter should I start out with. The belt is too narrow. It reaches 45 on the flat (even with the variator restriction), but will slow to under 20 on even a moderate gradient. what jetsize do you currentlt have installed? The easiest way to remove the catalyst of your scooter is to replace the stock exhaust with an aftermarket model. Fuel ignites with the help of air, so the more clean air that flows into the engine the more combustion you'll get. Can you give me some idea about Scooter vespa LX50 4T, engene code C389M. Get involved in the comments, or post to the forum to make this page more fun for everyone. I see that you dont update your page too often. 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. 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 (? They are a good investment and can be used for carburators up to 21mm diameter in size. In most cases, your bike won't even start or idle roughly . 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. Also make sure that youre main jet is choosen correctly. Ive spoken to many people about this, and theyve said that it isnt CDI restricted because their TGB Jetfighter or other TGB scooter wasnt CDI restricted. 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? Have you had a look to see if there is a restricting collar on the front pulleys? 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. Shopping Cart. 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. As said in my email, you probably received the wrong exhaust. Hi I just bougt an Honda NSC50R in Norway , it is limited to go in max speed 45 kmh i have ordered a CDI /Turbo kit TK-TJ015-UR1VN Have i ordered the right part ? When the air/petrol mix supply is restricted the engine cannot perform at its full power. No risk for engine damage or anything! If you want a good balance of performance and sound muffling, you would likely pick a more thickly packed muffler. 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?! Quick Answer: How To Make 50Cc Dirt Bike Faster - BikeHike Sure thing to get a caliper and measure from time to time. []. If it revs higher than 8000rpm you're don't have a restricted CDI in place. Even for someone like me who today, for the first time, had a go at de-restricting my variator with little success. 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 kit mostly contains of an electronically limited CDI and some other parts (removal of the pillion seat, cylinder head spacer to decrease compression, etc). Scooter mechanic here. Hello. And to increase the speed of your electric scooter, all you need to do is replace the battery with a higher voltage one. Simply remove the limiter and you will be able to fully open the slider. Now to find out why its not charging my bets on the almost constant rain that weve been receiving lately. either way ill be getin a de-restricted one. The local dealer is really uncooperative and refuses to provide any info on the restriction itself (i.e. 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. Easiest is to swap the cylinder with a racing kit, like the Stage6 Sport Pro! These can only be replaced by buying a shortened exhaust manifold. Thanks. The CDI (Capacitor Discharge Ignition) is a black piece of electronics that handles the ignition process of the scooter. Throttle opening and air supply restrictions are often found on scooter carburators in order to restrict performance. Thus, look for the usual Minarelli restrictions and get an unrestricted CDI! P.S MOT last week showed no indication of pulley trouble, or anything else for that matter! currently running at way too slow and really need the help. It goes about 58-60mph on the flat, 65mph downhill, and maybe 45 uphill, variator ring is out, what else could be done to speed it up, its quick as it is but I want more! you seem like a smart guy and i have faith in you! Also have a look for the exhaust restirctions. To stroke an engine, a tuner relocates the big-end bearing further outboard on the crank halves. 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. Different countries have different laws. 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. 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. 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. How To Make A 50cc Scooter Faster (5 Easy & Free Methods) - Request assistance from the technical team, - Terms and conditions of sale and returns -. Drill holes anywhere on outer wall of the intake. Hi, It is actually a Chinese scooter, not a Japanese. Thanks mate. 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? ), Honda ruckus, Yamaha zuma. The scooter brakes through the 140 mm drum-type brake at its rear. Please note: It is not possible to derestrict the CDI by yourself. Hi Richard Is that a 4st or 2st model? This is due to some restricting parts not allowing the engine to perform as it is was designed to. Hi Daniel, Thanks for the interesting article. 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. Whats the jetting like? Over the next days/weeks I will explain the basics of scooter tuning, starting with simple improvements like derestrict a 50cc scooter and later going deeper into engine tuning concepts like flowing or changing the engine timings. You can also find variator rings in some engines! Been a bit busy here recently 1. Base your decision on your performance desires. i dont have any money to use to upgrade it or buy parts otherwise i would buy a new one that goes faster. Alternatively it is also possible to buy unrestricted exhaust manifolds (e.g. 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? Increase the air flow to the engine. A limiter within the carburator blocks the movement of the slider.