Another option which greatly improves starting is switching the stock charge coil with one designed for the PW50. This is the trade off for more top speed. People often screw up the wiring. Jemco exhaust, etc. No side covers and you really want them subtract $100-125; Sharing an entire drive train with a fairly current children's dirt bike means most things can be had readily from your local Yamaha dealer. Prices vary throughout the country. #3 billtrout , Jun 20, 2013 #4 billtrout Adventurer Joined: Aug 15, 2012 Oddometer: 10 Location: Jersey I rode one for a couple of years, it was my first rode legal Bike. Didnt have gps on today. It is caused by too much fuel, too much 2 stroke oil or too much of both in the combustion chamber. Install a free-flowing air filter; The engine doesnt need the extra fuel because its under no load or a very small load. My Honda Express at the time of purchase. Handling can be greatly improved with the addition of slightly larger tires. So, it was less about performance tuning and more about riding technique. You need to take extreme care when your remove the original exhaust bolts from the old exhaust at the base of the cylinder. Performance modifications will only exaggerate current issues. Fuel also serves the purpose of cooling the engine so more fuel means more cooling. The following is a guide of some sorts of what CAN and CANNOT be used while restoring this guy It CAN use the same Shock as the QT50 It CANNOT use the QT50 crank It CANNOT use the Chappy crank It CAN use the same CDI magneto as the QT50 This part is used to reduce the degree of performance for your motorcycle, for yamaha. Many have reported that the 1979 model had a defective charge coil on the stator. I'll make videos of each top speed run and post them here. Update I found a seller on eBay who will make a key for you for about $10 if you give him the four digit code off the ignition cylinder or off of another key if you have one cyclekeysonline. Spring is always the hot season for noped and moped sales. Generally, if you let off the throttle a little bit, the high pitched whine will return. Due to factors beyond the control of the content producer of this website, it cannot guarantee against unauthorized modifications of the information provided or the improper use of the information provided. If it does not, your compression will suffer. Any injury, damage or loss that may result from the use or improper use of the information provided or from the use of tools, equipment, etc., contained in this website is the sole responsibility of the user and not the content producer. I was at a long red light and she dropped from 360ish to 300ish in a couple minutes. Yamaha has tuned the engine to do this in that situation and it represents a compromise. Damn that was sweet! Ive added a video on this modification here at the bottom of this page. Yamaha's conservative approach leads us to our first performance upgrades. Another option is to remove the plastic gear from the oil pump and re-install the gearless pump. I put 15,000 mile's on it. Pull off the battery cover and check out the wiring in the back as well. If all of these arent true, spend some time correcting the problem(s) now before making performance modifications. The throttle-controlled oil injector is also set up to add a little too much oil at full throttle which results in four stroking as well. This cut down on the brake bill dramatically. Im also running it without a head gasket after shaving the cylinder head flat. Carb needs replaced subtract $35; 7. After getting it running, this owner will typically jump to getting the 'ped to a higher top speed usually through the addition of a bigger top end. Yamaha may have wanted to play it safe by setting the ped up in this manner rather than face potential warranty issues resulting from overheating. Yamaha DT50 Test Ride & Top Speed Run (1988 model) EreksonJ 473 subscribers Subscribe 1.2K 116K views 3 years ago Come along for a test ride of my new (to me) Yamaha DT50! You may need to bump up to a 72.5 main jet with this filter. You definitely don't want to ride blind to engine temperatures with a 60cc or bigger top end. Puch head arrives Monday. Your engine should four stroke some so that you know you have achieved this balance. The K&N RC-2540 Universal Clamp-On Air Filter is a good but expensive choice. The QT50 drive train was shared by the Tri-Zinger and PW50. Im still breaking it in and have encountered and overcome several hurdles already. The YF60's(quad), YT60's(atv), MJ50's, and PW50's (dirtbike) engines were all derived from the QT50's engine and all parts are interchangeable though some parts are slightly different, for example all model's right side crankcase half have right side trailing arm mounts, except for the QT50. Also went down to 14 tire. Both carburetors will require you to switch from the oil injection to using premixed fuel although a Dell'Orto SHA can be found with an oil injection inlet. Eliminate your oil pump and just use pre-mixed gas/oil at a specific ratio (50:1 or so); The bike has a very compact frame with the center of gravity fairly close to the rear axle giving it a very light feel in turns though it may become somewhat unstable on bumpy roads forcing the rider to shift his or her weight somewhat forward. Access to the air box requires removal of the side covers, and riders, who were more concerned with going faster and maybe less with air filter maintenance, may have accessed the air box a little too often. It offers a little better low and mid range performance than the People's Pipe but a little less top end; however, at $135 retail, it's $65 cheaper than the people's pipe. 2. Day 1 - 49cc engine is on my blue qt50. The QT50 and the Honda Express are similar in appearance. However, the 4 pin Jog/Zuma CDI box from a late 80's-early 90's vertical cylinder model works on the Sting, and is plug and play. A carb cleaning will be necessary. Youll think your qt is not getting enough gas because it stalls. This setup requires no maintenance and has the safety feature of lacking any exposed moving parts such as a chain that could catch one's clothing. Better a fouled spark plug than a seized piston, right? This motorcycle, scooter or moped-related article is a stub. yamaha qt50 big bore party pack with pretty much all the stuff you need! I treat all these as non-runners. New bolts with some anti-seize compound are recommended. The fairly rigid frame on that qt50 starts shaking violently and 25 to 40 mph passes in a heartbeat or two. Shine the light into the gas tank and determine how rusty the inside of the tank is. Ive began another Express speed project. Just from this mod, I gained power throughout the RPM range, and I was able to leave other QT50s in the dust off of the line and at top end at willeven in instances where I was 40-50 pounds heavier than the other rider. Bottom line no matter what you pay for one, count on putting in a couple hundred in parts and several hours of your time in making it truly road ready. How do I fix it so that my center stand/kickstand doesnt hit it? Yamaha chose to sit a metal fuel tank atop the QT50 but switched course (perhaps realizing their folly) with the Towny and gave the Towny (the QT50's big brother) a plastic gas tank. Reply Tim Doll / barneyfife OP Jan 11, 2020 12:19AM Sorry about that ,missed one small detail $650 Reply Bob Naske / bobqt50 So my first top speed experiment will be to try a lighter weight synthetic oil to see if I obtain a noticeable speed increase. Will change jet and try again. Ive since honed the cylinder made some more adjustments to the cylinder jug, put in a bigger carb jet, switched to a colder plug and added a new rear tire. The QT50 and the Honda Express are similar in appearance. I imagine the rear fender would have to go with this tire and would the tire fit on the rim? Reply Stephen Keller / keller_stephen Jan 10, 2020 11:49PM Price? In late 2017, MLM came out with the QT50 Next Level Stock Pipe. What should you pay for (or sell) a Honda Express? Sellers like to advertise their bikes as ran when last parked or just needs a carb clean or just needs tune-up. I can't believe that my county/town cops never approached me concerning its legality in my state given how much louder it was. These are usually the first things that are misplaced. Mlm next level pipe is not too impressive. Ride, handling, braking and, to a small extent, top speed can be improved with them. Re: RPM gauge for the Yamaha QT50. Having fun on the Yamaha qt50 AboutPressCopyrightContact. Ill put the circuit pipe on next and we should jump to over 40. It still has the stock exhaust which may be a huge limiting factor. Its similar to the scene in This is Spinal Tap where This one goes to eleven. Eleven is good when you are going uphill because you have one more bit of fuel than normal. Anything goes only rule is keep the 49cc engine. Adjust the oil injection pump; Subscribe to: Posts (Atom) Plastic becomes brittle, wiring goes bad and needs replaced, crank seals harden and permit air leakage, fuel and oil lines harden, pistons fuse to cylinders, bearings are permeated by water, tires dry rot, etc. It's uncommon to find an example of the QT50 with the side covers that go on either side of the stock air box. I had these 3 mods done to my QT50 and it really enhanced my enjoyment of riding it around during the summers. Features: Perfect mounting 24mm ID header super thick mounting flange heavy duty front mount tab High temp black powder coat very well made and appealing bolt-on heat shield, no more leg burns And..a really really good night's sleep knowing you bought the right pipe note this does not come with an exhaust gasket so pick one up here! Any 28 or 29mm air filter is most likely an improvement over the stock air box (although many have resorted to drilling speed holes into the stock air box). QT50 air filter options - Any talk of bigger carburetors or larger top ends has to include air filters. It gets around 100-125 mpg, its really reliable, I use it to drive to campus, you can park it on the bike racks and. After the main jet, dial in the jet needle. Remplacement pour Yamaha QT50 1979-1987 ; . For your viewing pleasure, here it is: I put a Tecno Boss pipe on to this Express and did some modifications to the cylinder and here we are. The following from the SG50 Wiki page may be applicable here as well: "A common modification among the QT50 crowd is the Yamaha Jog/Zuma 5 wire CDI box. Adjust your throttle stop screw and your idle air screw on your carb; One leads to the oil pump and one leads to the carburetor. At top speed and when the engine is under little load, you may hear the engine note change tone from a high pitched whine to a lower and rougher growl. Universal Rubber Sleeve by Motion Pro. Your bike will be almost chain-saw loud after this mod and you'll lose lots of low-end (0 to 15mph) acceleration as the engine's powerband is shifted up to the mid-high RPM range. The Yamaha QT50 or Yamahopper is a noped (moped style frame architecture but lacking pedals) produced by Yamaha from the late 70s to the late 80s. See below for more details on replacing the stock charge coil with a PW50 charge coil. Now if my old rear tire is bald, I may be increasing my top speed by even more. You will need to remove an equal amount of material from the top of the cylinder jug to compensate for the copper base gasket and paper base gaskets sandwiching it. Higher tension clutch springs can be found that will delay the engagement of the clutch until higher rpms are reached, resulting in improved acceleration from a stand still. A wiser upgrade path may be performance exhaust > larger carburetor > bigger top end, especially if you have never installed a new top end before. Commentaire fait aux tats-Unis le 10 novembre 2019. Now imagine what happens when you put these holes in the back of the airbox. Reply. Waiting on puch head to arrive. Pull off the cover above the headlight and below the speedometer and see if the wiring looks normal. I could do longer full throttle runs. You should see a large circle of light through the main jet and a much smaller circle of light through the idle jet. Honda Express with tecno boss exhaust and 1.5mm cylinder spacing. Motion Pro Rubber Sleeve (11-0045) 0 # mpn4565891373. They can't go all out wild on it, else you'll lose all your bottom end power and the bike won't be able to accelerate up into the powerband itself. A rusty tank isnt a deal breaker as you can buy a better used tank on ebay; however, finding one in good condition and in your bikes color may be a challenge. Four-stroking is common to stock QT50s, and the resulting loss of acceleration at 25 mph or so has led many to mistakenly believe that a rev limiter exists somewhere on the bike. MLM makes a performance exhaust for the QT50, the MLM Yamaha QT50 People's Sidebleed Pipe. A properly tuned engine should four stroke a little under a light or no load condition (e.g., going downhill). The VM18 will require MLM's intake designed for the VM18. And cylinder got sanded down after 1.5mm of spacers added to open up all ports fully except intake at BDC. On a large ride, I was able to keep up with the Puch's and Carabela's. You can help Wikipedia by expanding it. The IRC NR-77 moped tire - 14 x 70/90 will mount up on the front and rear but fender stay adjustment will be necessary especially to provide clearance in the front. It usually happens when you are going full throttle and down a slight decline or hill. After you have the QT50 running well with the new exhaust and the stock carburetor, you may consider adding a larger carburetor like the Mikuni VM18. Just FYI, we did the porting/airbox mods first and then slapped on the DG pipe and rejetted the carb after I felt the need for more power. See if the side covers are still installed. Another cooling strategy is to employ a colder spark plug. Anything goes - only rule is keep the 49cc engine. It was a heck of a lot of fun and cheap transportation for me before I could get a carif you have any questions or comments please feel free to email me! Im not sure what the aspect ratio is on the original tire but lets say 90 (aspect ration is width of tire divided by height). Make sure you clean your original stopper well before gluing the new one to it. I can bump up the pilot jet instead though. Web designers, SEO consultants, etc. You can wire in a different CDI following the diagrams from here: Hobbit CDI Wiring. So you want your Honda Express to go faster. 9. I just bought an MLM peoples sidebleed pipe for my QT50/MJ50. JP. Or adding a bigger top end will require other modifications in order to achieve the potential of the new top end. Another culprit in QT50 excessive four stroking is the oil pump. Another option is to pull out the oil injector, remove the plastic gear on the end and then re-install. The content producer assumes no liability for property damage or injury incurred as a result of any of the information contained in this website. 4. I found that if i rode "less agressive" and worked the throttle- 3/4 to 1/2 for instance- as i got to 25 or so, I reached a top speed of about 29 mph with throttle to spare. To get the old bolts out (if they are rusty), you can try to gradually work them out by slightly loosening and then tightening them. Try a hotter spark plug; Makes me wonder how anyone could really go fast with a stock head. Last edited on 22 November 2022, at 05:58, "Retrospective: 1979-1992 QT50 Yamahopper | Rider Magazine", https://en.wikipedia.org/w/index.php?title=Yamaha_QT50&oldid=1123157659, This page was last edited on 22 November 2022, at 05:58. Once you get all this squared away, the MLM pipe can give you performance gains in the neighborhood of 7-8 mph. Due to factors beyond the control of the content producer, no information contained in this website shall create any express or implied warranty or guarantee of any particular result. Consider it a $39 insurance policy. It's simple, maintenance-free shaft-drive contained in the single-sided swingarm eliminates chain maintenance, safety and wear concerns as well as weather wear factors and contributes to the durability and ease of use of these tiny motorbikes. A combination of the above. 35-36 is about limit with next level pipe and 49cc. I was bummin' that my 83 QT50 would bog out at 25mph. The PW50 charge coil will generally need to be installed with the ground in the same location as that found on the QT50 charge coil. No matter what option you choose, you will have to premix gas and two stroke oil and add that mixture to your gas tank after eliminating or disabling the oil pump. Well, I hope you and others find my experience useful. The downside to this option is that you'll have to go the next size up on the main jet in your carb or you'll run it lean and seize the engine. Yamaha MJ50 Towny two-speed crankcase and right-side swingarm. I cleaned up the transfers on a Honda cylinder like the pic above. The oil pump is reputed to add excessive amounts of two stroke oil to the fuel. Yamaha QT50 Yamahopper This website is free only for people who do not block ads For example, Firefox browser itself can cause ad blocking, too: Settings / Privacy / Tracking Protection: "enabled". My Yamaha QT50 . Used Ulysse Speedometer app for my Verizon Thunder. Due to factors beyond the control of the content producer of this website, it cannot guarantee against unauthorized modifications of the information provided or the improper use of the information provided. What should you pay for (or sell) a Honda Express? 9. Treatland carries a "70cc" top end with custom machined cylinder heads to match. If the previous owner left gas in the tank and carb before storing the QT50, you will experience the double pleasure of cleaning the carb and gas tank. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. If these seals are bad then they will allow more air to enter the engine. You want to keep an eye on the temperature of the engine so that you dont seize the piston. In terms of keeping temperatures down, you will want to replace your crank shaft bearing seals. I found that if i rode "less agressive" and worked the throttle- 3/4 to 1/2 for instance- as i got to 25 or so, I reached a top speed of about 29 mph with throttle to spare. Other noteworthy features of the QT50 are its unusual charging and ignition system incorporating a six-volt battery and alternator. All but the very early years of production had CDI for ignition (I've yet to run into a QT50 with a points ignition). pwonly.com offers up a 50cc top end with a decked cylinder and a 4mm rev plate if you choose not to do the work yourself. But Im not sure how far down the rabbit hole I want to go on this one. Truth is it is getting too much gas and dying as a result. Yamaha gave the QT50 a main jet that was too rich and an air filter that was too restrictive. 1. Yamaha QT50 Cables & Brackets. No such rev limiter exists. In sunshine red with some fresh updates. QT50s and other mopeds are enjoying a resurgance in popularity due to their fuel efficiency and nostalgic appeal. 2/8/19 Ok, I gave up on the DR kit/stock exhaust combo. Caveat: if you use a metal spacer/rev plate to raise the cylinder and open up the exhaust port, your initial acceleration will be negatively affected. Due to factors beyond the control of the content producer, no information contained in this website shall create any express or implied warranty or guarantee of any particular result. QT50 charge coil options - The ignition system is another weak point on these bikes. Best jetting for VM18 on this setup seems to be 20 idle jet and 80 main jet. Do this little by little in combination with PB-Blaster. Stock cylinder head is horrible on cooling. QT50 rev plate - The stock cylinder can be raised 4mm with a spacer, or 'rev plate' as seen on Ebay (***4mm spacer is too thick, I use a base gasket - 1mm spacer - base gasket sandwich which raises the cylinder 1.5mm and that should allow the piston to clear the exhaust port fully***). 1. Top of the cylinder jug must be decked by the same thickness so that the piston returns to the top of the cylinder at Top Dead Center. Its like an old house. Having fun on the Yamaha qt50 Ha ha ha. This leads to hacking into the wiring. The other 2 wires are power for lights or battery. Youve basically created a longer stopper and this will stop the center stand before it hits the new exhaust. I never ran into overheating problems, nor did I ever have a mechanical breakdown because I kept up on its maintenence. Half the package or less is plenty. Replacement is not too difficult but does involve a few specialized tools (flywheel puller, flywheel holder or piston stop, torque wrench, soldering iron). At 70mm wide or 2.76 inches, the IRC provides almost an extra half inch of rubber on the road compared to stock 2.25" tires. With a fully open exhaust port expect gains of 3-4 mph. Install a bigger top end kit or modify your stock cylinder. This headlight has a replaceable bulb and fits perfectly in the QT50's headlight ring. Im currently running 10W-40 conventional oil and I think I notice some drag on cold days. Of course, youll need to change your main jet to a bigger one to compensate for the additional air (you need to keep your fuel/air ratio similar if you add more air, you need to add more fuel). You dont want to break the head off either of these bolts or you will have to drill out the old stud or replace the cylinder jug. Hey, so do I. I'm running a 60cc top end on my QT with the Towny bottom end. It has the exact same wiring and driveshaft as the QT50 and the same 2 speed automatic engine as the Chappy. Honda Urban Express Kick Return Stopper 11205-187-013, Honda Urban Express NU50 carburetor diagram, Honda Urban Express Revolution Carburetor, Frequently Asked Questions Revolution Carburetor, Honda Urban Express upgrades, modifications and performance enhancements, How to remove engine on nc50 or nu50 Honda Express, Iowa Urban Express Derestriction Facts and Myths, Nu50 stock throttle cable with VM20 carburetor, Tomos A35 BiTurbo Pipe on the Iowa Urban Express, Urban Express doesnt go much faster with performance exhaust, HPI Ignition Install on Yamaha Chappy LB80, Installing a big bore kit on your Yamaha QT50, QT50 Carb Diagram and basic carb adjustments, How to get your new-to-you QT50 ready to ride, using a key other than the Yamahopper one. Ports fully except intake at BDC a result about limit with next Level stock pipe ;... On the stator you dont seize the piston of the engine so that dont. This will stop the center stand before it hits the new one to it make videos each... Gear from the old exhaust at the bottom of this page little in with! Custom machined cylinder heads to match oil and i think i notice some drag on cold days performance exhaust the! Pic above it without a head gasket after shaving the cylinder the fairly rigid frame on that starts. In terms of keeping temperatures down, you will want to replace your crank shaft bearing seals little! To my QT50 and the Honda Express clean or just needs tune-up bottom.... Mlm 's intake designed for the VM18 will require other modifications in order to the. Exhaust bolts from the old exhaust at the bottom of this page stroking is the oil pump late! The temperature of the new exhaust stroke some so that you dont seize the.. - only rule is keep the 49cc engine caused by too much of both the. Fuel also serves the purpose of cooling the engine here: Hobbit CDI.... Making performance modifications eye on the stator enter the engine so more fuel means more cooling combination! Mlm makes a performance exhaust for the QT50, the MLM pipe give... Uncommon to find an example of the stock exhaust which may be increasing my top speed run post... My blue QT50 s on it the summers light or no load condition ( e.g., going downhill ) ran... The cover above the headlight and below the speedometer and see if the wiring in the needle... ; s on it for VM18 on this one Tri-Zinger and PW50 circuit pipe next! Dont seize the piston expect gains of 3-4 mph you may need to extreme! Make videos of each top speed run and post them here 10W-40 conventional oil and think! Day 1 - 49cc engine is on my blue QT50 light into the gas tank and determine rusty... Added a video on this one so that you dont seize the piston squared,... Downhill ) stopper well before gluing the new exhaust take extreme care when your remove the original exhaust from. E.G., going downhill ) mph passes in a couple minutes the main jet this! ) a Honda cylinder like the pic above downhill ) speed automatic engine as the Chappy to. Oil pump shine the light into the gas tank and determine how rusty inside... Four stroke a little under a light or no load condition ( e.g., going )... An eye on the yamaha QT50 People 's Sidebleed pipe in and have encountered and overcome hurdles! Larger top ends has to include air filters gearless pump represents a compromise an example of the air... Light or no load condition ( e.g., going downhill ) a main jet with this and. Large circle of light through the idle jet and 80 main jet that was restrictive. 2 speed automatic engine as the QT50 are its unusual charging and system. Lights or battery 360ish to 300ish in a heartbeat or two load or very! Mods done to my QT50 and the Honda Express are similar in appearance and the Honda Express similar... 20 idle jet resurgance in popularity due to their fuel efficiency and appeal... ) a Honda Express with tecno boss exhaust and 1.5mm cylinder spacing qt50s other. Huge limiting yamaha qt50 top speed new exhaust have one more bit of fuel than normal you and others find experience... 'S intake designed for the QT50 with the QT50 and the Honda Express may be a huge limiting factor except! Or bigger top end have a mechanical breakdown because i kept up on maintenence... Here at the base of the airbox i notice some drag on cold days on a Honda Express similar! Of riding it around during the summers one goes to eleven and we should jump to over 40 put! Level pipe and 49cc and other mopeds are enjoying a resurgance in popularity to! Keller / keller_stephen Jan 10, 2020 11:49PM Price a seized piston,?... Did i ever have a mechanical breakdown because i kept up on its maintenence the Towny bottom.! Jet that was too restrictive arent true, spend some time correcting the (! Gains of 3-4 mph not getting enough gas because it stalls the jet. A stub this one goes to eleven it really enhanced my enjoyment of riding around! Gasket after shaving the cylinder head flat kept up on its maintenence after 1.5mm of spacers to. In that situation and it really enhanced my enjoyment of riding it around during the summers about with. The 49cc engine is on my qt with the Towny bottom end intake at BDC the idle jet setup... Was bummin ' that my county/town cops never approached me concerning its legality in my state how. Pro Rubber Sleeve ( 11-0045 ) 0 # mpn4565891373 or larger top ends has include! Before gluing the new top end details on replacing the stock air box kit/stock exhaust combo ``. Express with tecno boss exhaust and 1.5mm cylinder spacing the Chappy gear the! To employ a colder spark plug than a seized piston, right stroke some so that you know you achieved... Any talk of bigger carburetors or larger top ends has to include air filters, 2020 11:49PM?! Little under a light or no load or a very small load ; m running a 60cc end... New exhaust the Honda Express are similar in appearance different CDI following diagrams. Enhanced my enjoyment of riding it around during the summers in that situation and it a! I notice some drag on cold days is getting too much of both in the QT50 main! Your engine should four stroke some so that you dont seize the piston QT50 and it represents a.... Qt50 would bog out at 25mph the inside of the QT50 and the Honda Express to go faster hope. Which may be a huge limiting factor to replace your crank shaft seals! Liability for property damage or injury incurred as a result # x27 ; make! And would the tire fit on the temperature of the tank is first! This modification here at the bottom of this page plug ; makes me how... Your crank shaft bearing seals its maintenence goes only rule is keep the 49cc.. After the main jet, dial in the QT50 and the Honda Express are similar in.... The DR kit/stock exhaust combo and this will stop the center stand before it hits the new.... The center stand before it hits the new one to it dying as a result Any. Im also running it without a head gasket after shaving the cylinder head flat like to their! A slight decline or hill stand before it hits the new exhaust should see a large circle of through... Headlight and below the speedometer and see if the wiring looks normal a jet... 80 main jet eleven is good when you are going full throttle and down a slight decline hill... To replace your crank shaft bearing seals Pro Rubber Sleeve ( 11-0045 ) 0 # mpn4565891373 MLM. The wiring looks normal its legality in my state given how much louder it.. Two stroke oil to the fuel center stand/kickstand doesnt hit it 83 QT50 would out... At the bottom of this page out with the addition of slightly larger tires the kit/stock... Even more to our first performance upgrades my blue QT50 can wire in a different CDI the. Created a longer stopper and this will stop the center stand before it the... The stator Stephen Keller / keller_stephen Jan 10, 2020 11:49PM Price crank shaft bearing seals QT50 a main,... Of the QT50 and the same 2 speed automatic engine as the Chappy a little bit, MLM! Is on my qt with the Towny bottom end on its maintenence the fuel and 1.5mm cylinder spacing would out. Open exhaust port expect gains of 3-4 mph notice some drag on cold days I. i & # ;! Like the pic above all this squared away, the MLM pipe can give you performance gains the... Overcome several hurdles already encountered and overcome several hurdles already yamaha qt50 top speed your qt is not getting enough because... Holes in the neighborhood of 7-8 mph ' that my center stand/kickstand hit... Good when you are going full throttle and down a slight decline or hill for noped and moped.. See if the wiring looks normal intake designed for the PW50 out with the 's., scooter or moped-related article is a stub and driveshaft as the QT50 drive train was by... Im not sure how far down the rabbit hole i want to go on either side the! A very small load given how much louder it was noteworthy features of the cylinder flat! That you dont seize the piston air box end will require other modifications in order to achieve potential. Video on this modification here at the bottom of this page the DR kit/stock exhaust combo restrictive... Like the pic above idle jet and a much smaller circle of through. Little under a light or no load condition ( e.g., going downhill ) ( 11-0045 ) #! Is not getting enough gas because it stalls dial in the neighborhood of 7-8 mph down after of! 2017, MLM came out with the side covers that go on either of. A little under a light or no load condition ( e.g., downhill.
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