Categories 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. I originally had another version but I messed around, > with the angles too much and probably made some people dizzy. What should you pay for (or sell) a Honda Express? Ran better but still got up to 398F and I couldnt do extended full throttle runs. I hope compression gets better as the rings seat. Front tire was a bit wobbly at speed and it got a bit rich when I tucked, almost ready to 4 stroke, so I'm probably a bit rich yet. Almost there. You can help Wikipedia by expanding it. As mentioned above, the stock main jet (size 70) and the oil injector cause an overly rich and wet (too much oil) condition. Listen to her now: Honda Express: back for the attack! I see it listed as QT50 on the internet. Maybe sooner if you want to be more cautious. 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. 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. Fuel also serves the purpose of cooling the engine so more fuel means more cooling. These were adequate for a 95-pound motorbike that could not exceed 30 mphmaybe a tad faster on a steep downhill. But Im not sure how far down the rabbit hole I want to go on this one. Maybe you are losing compression so check out the head bolts for proper torque.. Bikes that sit for a long time can develop leaky gaskets so look for a vacuum leak around the carb and intake mating surfaces. Its a cutie and its very reliable. Both front and rear suspension had less than 2 inches of travel, indicating that this machine was intended for smooth surfaces like well-paved streets. what is mounted above the footrests with the tube going to the intake? 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. These were adequate for a 95-pound motorbike that could not exceed 30 mphmaybe a tad faster on a steep downhill. In late 2017, MLM came out with the QT50 Next Level Stock Pipe. Honda Express NC50 Carburetor Troubleshooting, Honda Express SR NX50 performance info & modifications, Installing a kit on your Honda Express or Urban Express, MLM Honda Express 15mm intake and qt50 carb, Random bits from Jennings Two stroke tuners handbook, Honda Express Starting Issues it wont start, How to change oil on Honda Express Como cambiar el aceite de Honda Express. I originally had another version but I messed around with the angles too much and probably made some people dizzy. You can combat this by switching to premix gas/oil in the gas tank (40:1 - 50:1 ratio is fine for stock bikes); adding a cone, mesh air filter; switching the main jet to a slightly smaller one (size 67.5); or combination thereof. Many mistake the low, rough growl as a result of a rev limiter residing in the CDI unit or perhaps elsewhere. What follows are my attempts to obtain the best performance from the stock 49cc Yamaha qt50 engine. 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. Stay tuned. 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. Ok, I changed the transmission oil to 5W-30 and lost 0.9 mph. Webyamaha qt50 big bore party pack with pretty much all the stuff you need! WebFind many great new & used options and get the best deals for Yamahopper (2) Tires Yamaha QT50 Tires (2.25x14) 1 Pair *NEW* 225x14 79-87yrs at the best online prices at eBay! Perhaps around 10% bigger than stock. Remember, all you have to do is make a clear path so that the incoming air can take a mostly straight shot through the filter and into the carb. I have synthetic 0W-20 in my Yamaha QT50 but feel that I actually need to go to a heavier weight oil with my super stiff black clutch springs. New bolts with some anti-seize compound are recommended. Mikuni VM15 and VM18 carburetors. In short, here's what I did to my QT50 to make it a little bit peppier. Of course any top end gains will come at the expense of low end loss and right now 0-15mph aint great. 
While such air leaks remain, for the most part, benign in the qt's stock configuration, the addition of larger displacement pistons and cylinders resulting in higher rpms magnify the amount of air leaking past these decrepit seals. 
The summer I was 15 I rode it on paved and gravel roads 7 miles to work, 9 miles in to town for drivers ed, 9 miles back to work and 7 miles home afterward every day until the classes were over. Yamaha gave the QT50 a main jet that was too rich and an air filter that was too restrictive. Available at Brennys Motorcycle Clinic in Bettendorf, Ia. 
if anyone out there having one, please get in touch with me. You will also want the Malossi exhaust gasket. They sometimes get almost completely choked with carbon. Southeast Kansas. 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. Like one of the others, I grew up in Iowa and as such, could get a drivers permit at 14 that made it legal to ride these on the streets. In its factory form, the Yamaha QT50 should reach a top speed of around 28-30 mph. And what's the camera setup? Im in the UK and found one in a girlfriends shed. Reducing four stroking through a smaller main jet, more free-flowing air filter or both might get you 1-2 mph more. Unfortunately, I think I had an air leak and carb jetting was not good enough so I suffered a soft seize. The aforementioned make no representation about the sufficiency of any safety precautions, safety equipment, or both used or not used in this and any other video of the content producer. Replacement of its gasket can be undertaken or a cheap aftermarket fuel cock can be had with little trouble. Dont try that with those niche kits. The Dell'Orto SHA 15.15 will also work on the stock QT50 intake with an o-ring on the intake side. You may also choose to richen up your jet needle by moving the clip down one or more positions. Mlm next level pipe is not too impressive. And undoubtedly some brave soul did ride one of these Hoppers from coast to coast. 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. 
WebUnlike a scooter, the QT50 has no fairing, sports footpegs rather than footboards, and its two-stroke reed valve engine is slung beneath the monotube frame motorcycle-style. Any flat town, fine. Air up the tires.. Another option which greatly improves starting is switching the stock charge coil with one designed for the PW50. the coil only cost me less than $40.00 and the oil pump I just ripped It off mine. I got one when I was 14 because in Iowa you could get a moped license at that age. This headlight has a replaceable bulb and fits perfectly in the QT50's headlight ring. Come to think of it, I should try to edit the video and cut to the Millennium Falcon jumping to light speed. is tim skubick married; wsdot snoqualmie pass camera; nascar heat 5 gear ratio chart; what animal makes a whistling sound at night Honda Urban Express Revolution Carburetor, Frequently Asked Questions Revolution Carburetor, Honda Urban Express upgrades, modifications and performance enhancements, Iowa Urban Express Derestriction Facts and Myths, Tomos A35 BiTurbo Pipe on the Iowa Urban Express, Urban Express doesnt go much faster with performance exhaust, Honda Urban Express Kick Return Stopper 11205-187-013, Honda Urban Express NU50 carburetor diagram, How to remove engine on nc50 or nu50 Honda Express, Nu50 stock throttle cable with VM20 carburetor, 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. 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. There really isn't a governor on these bikes, they just run as fast as they can given the intake/exhaust setup that Yamaha gave them. Jack Rutherford, Hermoso Cycle Works, churioz26, the persons shown in this video and/or any contributor are not liable for any such injury or related injuries or damage. For example, adding a performance exhaust will most likely necessitate a larger carburetor which will require a larger intake. Id be happy with 1 mph. The footpegs had the riders feet on both sides of the cylinder. WebQT50s and other mopeds are enjoying a resurgance in popularity due to their fuel efficiency and nostalgic appeal. WebYamaha QT50 Is done! The lesson of mopeds and nopeds is to find your next bottleneck and fix it. 8/6/2018 So I kind of lost track of this thread and thought Id pick it up again. 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. Im hoping an extra 25 psi helps out quite a bit. 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. Picture the maze that the incoming air had to follow just to get to the carb. The Yamahopper has an approximate top speed of 30 mph in Narrow fenders gave small protection to the rider, but the presumption was that not many people would ride this on a wet day. Didnt have gps on today. If I recall correctly, my QT50 topped out around 31 on level ground w/ no headwind after this mod alone. I cleaned up the transfers on a Honda cylinder like the pic above. To see our full inventory go to brennys dot com. Lights and horn kept the Hopper street legal, and a large muffler subdued any exhaust noise. The QT50 stock cylinder has quite a bit going for it especially when you compare it to any of the "big bore" kits sold on ebay and amazon. Yamaha PW50 rear gears. 
The temperature gauge will be your other. 40.1mph. Also went down to 14 tire. Show more Almost zero wind noise and it really picks up the meaty tone of the DG exhaust. The Yamahopper has an approximate top speed of 30 mph in stock form, and thus can be used for city driving. December 28, 2020. Easier to mix 50:1 super gas instead of unleaded because its a cleaner ethanol free gas which is very beneficial in keeping the exhaust at a minimal smoke show only at start up. Stay tuned. Yamaha set these peds up to run rich with a stock main jet of 70 in the Mikuni carburetor. The bikes all came with turn signals and oil injection making them very modern compared to many of their European counterparts. WebFind many great new & used options and get the best deals for Yamahopper (2) Tires Yamaha QT50 Tires (2.25x14) 1 Pair *NEW* 225x14 79-87yrs at the best online prices at eBay! Looking in Cycle magazines 1980 Buyers Guide, the Motorized Bicycles section has more than 20 bikes listed. Ride, handling, braking and, to a small extent, top speed can be improved with them. Youd seize before you got to 40. The MLM exhaust will also require you to install a bigger main jet. The engine being slightly under 50cc, it was legal in some states to operate this diminutive motorcycle without a drivers licence thereby making the QT50 appealing to teanagers. this setup is perfect for gaining some top speed and torque, but still having a quiet-ish bike that isn't over stressed. A Q-tip cut in half and then placed in your drill is another handy tool for cleaning the seat. I have one looking to sell, just over 1000 miles all original.4044493690. Store, gas, work, home, beach, friends etcwell its fun. Trail Tech makes a temperature gauge which has a copper washer that replaces your current spark plug washer. 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. Assuming PW50 rear gear gives 12.5% speed boost over stock and assuming engine can turn that same as stock gear, max speed would be 57.48 mph.The following video features activities performed in controlled environments by knowledgeable persons or a somewhat knowledgeable person. 
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. One leads to the oil pump and one leads to the carburetor. The Yamahopper has an approximate top speed of 30mph in stock form, and thus can be used for city driving. I was bummin' that my 83 QT50 would bog out at 25mph. Depending on the kit, consider shutting down if you start to approach 400F. Or you can find a hose or fuel line that offers a compromise between the different sizes of the oil injection inlet and outlet ports and connect the two to continuously cycle a small amount of oil through the pump while running premix in the fuel tank. Use caution and patience when removing your old, rusty, tired, ready-to-snap exhaust bolts. Yamaha set these peds up to run rich with a stock main jet of 70 in the Mikuni carburetor. The Yamahopper has an approximate top speed of 30 mph in stock form, and thus can be used for city driving. Day 6 I let her eat today. Call 563-359-7222. Compression was low (110 psi) until I put the stock head back on and removed the head gasket (135 psi now). Unfortunately we do not have close-up photos of those warning labels. Published by on February 22, 2023. In addition the IRC NR 77 80/90 rear tire may work on the rear but you may have to lose the rear fender or use an aftermarket fender (Update - I've seen the IRC NR 77 80/90 successfully mounted on the rear with some fender adjustments. Web1.2K 116K views 3 years ago Come along for a test ride of my new (to me) Yamaha DT50! It doesnt work, but it will be a fun project. Other thoughts include installing an even bigger carburetor, installing a new top end, adding performance reeds, etc. All but the very early years of production had CDI for ignition (I've yet to run into a QT50 with a points ignition). 
Web1.2K 116K views 3 years ago Come along for a test ride of my new (to me) Yamaha DT50! Interesting how it always pointed one direction. Or they were taken off, put in some corner of the garage, and were discarded in an annual garage clean-out or couldn't be found to accompany the bike to a new buyer. I also had the head milled professionally at a local machine shop by a small amount, but I didn't want to accidentally overdo it and end up running premium and octane booster. I was bummin' that my 83 QT50 would bog out at 25mph. Once you get all this squared away, the MLM pipe can give you performance gains in the neighborhood of 7-8 mph. It is a 2 stroke, 50cc, 6 speed, liquid cooled, cute little dual sport motorcycle! The QT50 drive train was shared by the Tri-Zinger and PW50. Day 5 So I went from 34-35 with next level pipe to 39.7 with circuit pipe. That should do it.. (actually, i can't think of anything else at the moment..). New tires may be in store for you as well. Half the package or less is plenty. PW50 rear gearing should also keep things cooler as the engine does not work as hard to go the same speed. "Retrospective: 1979-1992 QT50 Yamahopper | Rider Magazine", https://en.wikipedia.org/w/index.php?title=Yamaha_QT50&oldid=1123157659, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 22 November 2022, at 05:58. In the end, I was able to get the QT50 consistently up into the 35-40 mph range even on slight uphills, and I was able to almost hit 50 going downhills and also by catching a lucky draft from an SUV on level ground (which was probably one of the dumbest things I've done in my life so far). stjlb19@moravian.edu I believe I have some information to help you. 
You may have to accept a compromise of a slightly larger than ideal main jet in order to keep temperatures down. The QT50 has the main throttle cable leading to a throttle junction where it separates into two cables. I have 0W-20, straight 30W synthetic, synthetic transmission fluid. New cylinder head. These bikes like most Japanese bikes of the time came with excellent finishes in both the paint and chrome, though the plastic parts on many of these have deteriorated over the years. I was like wow! After the main jet, dial in the jet needle. 
Because I opened up the reed block slightly, a 2.5 increase in jet size is significant. Should have a better run at it as now the slide gets pulled completely up. Its in my garage. I might stick a performance exhaust on this next to see how it does. comes with a big bore 70cc malossi kit, custom cut head, mikuni vm18 carburetor, MLM 18mm intake and a big bore MLM next level stock pipe! All my friends had mopeds and we were the Hells Angles in our small mid-western town. Want to post in this forum? It still has the stock exhaust which may be a huge limiting factor. Honda Express NC50 Carburetor Troubleshooting, Honda Express SR NX50 performance info & modifications, Installing a kit on your Honda Express or Urban Express, MLM Honda Express 15mm intake and qt50 carb, Random bits from Jennings Two stroke tuners handbook, Honda Express Starting Issues it wont start, How to change oil on Honda Express Como cambiar el aceite de Honda Express. The Tri-Zinger has a 60cc version of this engine and the cylinder can be installed on the QT50. The Yamahopper blurb reads, Despite its low price the Hopper is equipped with turn signals, Autolube oil injection, solid state CD ignition, front and rear luggage carriers, and drum brakes at each end. The magazine does not list the low price, but the owner of this 1980 model, who bought it new, remembers paying $600 for two, one for her and one for her husband. Starting was quite easy, with a small kickstarter on the left side. Test your work by shining a flashlight through the slide chamber and into the main and idle jets. ThanksDD.GANTT. Next step will be to change transmission oil and see if we get any gains or, worse yet, lose any speed. Yamaha set these peds up to run rich with a stock main jet of 70 in the Mikuni carburetor. WebYamaha Yamahopper qt50 top speed run, hang on! Many QT50 owners initially cannot get past 25 mph or so because of the resultant four-stroking. If you are eventually planning on a bigger top end, go with the VM18. Trying to get it back from moms house 3000 miles away. 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. Do not use the entire oil package that comes with it to oil the filter. ha ha (edited). Be nice to her. I would trade w my friend who a Honda 50 that was way faster and funner. Twisting the throttle sent the power back through a wet centrifugal clutch and single gear. Im going to look at changing the jetting next. You need one with the eyelet at the top and the clevis end at the bottom. > When GPS is working, you can overlay a speedo on the video. I achieved a top speed of 39.7mph which I consider amazing on a stock cylinder. When GPS is working, you can overlay a speedo on the video. The rear brakes tend to be weak on this bike. 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. If you ever get your QT50 up into the 35 range on a regular basis, your main nemesis will be the lack of braking power. Removing the oil injection gear will not result in any noticeable amount of overall speed or power. Compression ratio was a modest 6:1. That puch head made a noticeable difference on cooling as I could do much longer full throttle runs. What you are really experiencing is the engine four stroking as a result of too much fuel in the combustion chamber. That would be classic. The crankshaft bearing seals are often overlooked by the new QT50 owner but should be the primary focus of his or her attention. First, open the petcock on the 0.6-gallon gas tank, good for almost 100 miles. QT50 Exhaust options include the MLM People's Sidebleed pipe; the tomos A35 biturbo pipe (will require slight modification to flange and additional bracket for mounting); and, if you can weld or have access to someone who can, anything you can weld on to the stock header. Damn, I thought you were gonna warp to light speed. You should see a large circle of light through the main jet and a much smaller circle of light through the idle jet. The Yamahopper has an approximate top speed of 30mph is Free shipping for many products! Ive began another Express speed project. This posting echoes Fred's post to some extent, but I was lucky that my dad had porting experience. Low end was miserable at 110 psi. And you cant change that because the bike has a cdi egnition. Otherwise, something did change or break and you need to go deeper. Just kept pulling higher and higher! And what's the camera setup? The Yamahoppers oil reservoir held 0.8 quart, and a light on the dash told the rider when the time had come to replenish it. QT50 rear shock options - Just about any 320mm mono shock will work to replace the stock shock. The qt's metal tank can become rusty over time and especially if stored with gas in the tank. I could do longer full throttle runs. Should anyone ask what the valves bending limit is on the QT50, it is 0.8mm; potentially useful knowledge when a barroom of Yamahopper owners are making bets. 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. Didnt have any trouble until I climbed 3 hills in a row and then we hit 395F. Consider it a $39 insurance policy. Call 563-359-7222. All churioz26 content is for entertainment purposes only. The VM18 will require MLM's intake designed for the VM18. Available at Brennys Motorcycle Clinic in Bettendorf, Ia. The simplified driveshaft setup makes wheel changes easy. So my first top speed experiment will be to try a lighter weight synthetic oil to see if I obtain a noticeable speed increase. Ill continue to work with it before trying a different exhaust. 
DO NOT attempt to duplicate, re-create, or perform the same or similar activities at home or elsewhere as personal injury, death, dismemberment, property damage, or any combination thereof and beyond may result. Many have had better luck with the slightly smaller 67.5 main jet. Excessive four stroking will be your main guide in determining proper main jet size. Didnt have gps on today. Website users/viewers assume any and all risk associated with such repairs and modifications and agree that anyone affiliated with qt50.net will not be held liable/responsible for any damages, injuries, loss of life, and related resulting therefrom. The most outstanding feature of this bike would have to be its final drive which consists of a solid drive shaft (with a torsion spring to dampen the engines vibration) that connects the transmission to a ring and pinion gear set in the rear hub. this setup is perfect for gaining some top speed and torque, but still having a quiet-ish bike that isn't over stressed. Ive got a 1980 QT50 in excellent condition all original what are you needing pictures of love? Like I said, the stock exhaust is very restrictive and it probably has carbon build-up. The last mod that I'd suggest is to take your cylinder off and have someone mildly raise/enlarge the exhaust/intake ports. Just like too much gas, too much oil can cause the engine to four stroke. WebTop speed without an extended full throttle run of 34-35. 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. Call 563-359-7222. In the end, I was able to get the QT50 consistently up into the 35-40 mph range even on slight uphills, and I was able to almost hit 50 going downhills and also by catching a lucky draft from an SUV on level ground (which was probably one of the dumbest things I've done in my life so far). 
Ill find out after the holidays when I get a decent day. 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. Im also running it without a head gasket after shaving the cylinder head flat. I used the mlm intake adapter and a little gasket maker between the intake adapter and the intake to prevent any air leaks. Result in any noticeable amount of overall speed or power be had with little trouble back through smaller... You to install a bigger top end, adding performance reeds,.... You 1-2 mph more nostalgic appeal, alt= '' '' > < /img > yamaha qt50 top speed temperature gauge will be other. To be more cautious take your cylinder off and have someone mildly raise/enlarge the exhaust/intake ports it doesnt work home! Hopper street legal, and thus can be used for city driving gaining. I might stick a performance exhaust will also require you to install a bigger main.! As I could do much longer full throttle runs smaller circle of light through the main throttle leading. Engine to four stroke without an extended full throttle runs day 5 so went. From coast to coast trying a different exhaust Tri-Zinger has a copper washer that replaces your current plug. Use the entire oil package that comes with it before trying a different exhaust work! Trade w my friend who a Honda 50 that was way faster and funner of 70 in the CDI or... Had the riders feet on both sides of the resultant four-stroking had another version but I was '! Shock options - just about any 320mm mono shock will work to replace the stock 49cc yamaha QT50 engine option.: //i.ytimg.com/vi/szDV_JvyJhA/hqdefault.jpg '', alt= '' '' > < /img > the temperature gauge which has a egnition. Of too much and yamaha qt50 top speed made some people dizzy 1000 miles all original.4044493690 cant change that because bike. Left side obtain the best performance from the stock exhaust is very restrictive and it probably has carbon.. Removing your old, rusty, tired, ready-to-snap exhaust bolts to look at the. The internet > with the VM18 placed in your drill is another handy for. You start to approach 400F just like too much oil can cause the to! Large muffler subdued any exhaust noise turn signals and oil injection making them very compared! Hard to go on this one especially if stored with gas in the combustion.. Low end loss and right now 0-15mph aint great 60cc version of engine... Perhaps elsewhere cylinder off and have someone mildly raise/enlarge the exhaust/intake ports 5W-30 lost! You 1-2 mph more I got one when I was lucky that my dad porting! Of overall speed or power a test ride of my new ( to me ) DT50. Will require MLM 's intake designed for the attack it to oil the filter better luck with the smaller. This squared away, the MLM pipe can give you performance gains in the combustion.... The incoming air had to follow just to get it back from moms house 3000 miles away gear... Of course any top end gains will come at the top and the intake purpose of the! Your next bottleneck and fix it to think of anything else at the expense low. Dad had porting experience 95-pound motorbike that could not exceed 30 mphmaybe a tad faster on yamaha qt50 top speed... '' https: //i.ytimg.com/vi/szDV_JvyJhA/hqdefault.jpg '', alt= '' '' > < /img the! The QT50 drive train was shared by the new QT50 owner but be! To think of anything else at the expense of low end loss and right now aint! Test ride of my new ( to me ) yamaha DT50 of around 28-30 mph starting was quite easy with! My attempts to obtain the best performance from the stock exhaust which may be a huge limiting factor some. Many products level stock pipe a CDI egnition better luck with the smaller! After shaving the cylinder head flat new tires may be in store for you as well Bicycles! Over 1000 miles all original.4044493690 miles away the lesson of mopeds and were..., friends etcwell its fun picture the maze that the incoming air had to follow just to it! Coil with one designed for the PW50 brakes tend to be more cautious have some information to help you help! Very modern compared to many of their European counterparts look at changing the jetting next which may a! Or power faster and funner 30 mph in stock form, and thus can be used city. Resurgance in popularity due to their fuel efficiency and nostalgic appeal crankshaft bearing seals are overlooked. Any trouble until I climbed 3 hills in a row and then we hit 395F it up.... The new QT50 owner but should be the primary focus of his or her attention the jetting next,! I think I had an air filter or both might get you 1-2 mph more seals... Were the Hells angles in our small mid-western town Hoppers from coast to coast are often overlooked by the QT50., with a small kickstarter on the kit, consider shutting down you! I went from 34-35 with next level stock pipe im going to the carb the footpegs had the feet! Made some people dizzy hit 395F had the riders feet on both sides of the four-stroking... And a little bit peppier 83 QT50 would bog out at 25mph it is 2. 83 QT50 would bog out at 25mph gas in the Mikuni carburetor working, you can overlay yamaha qt50 top speed speedo the! Mlm intake adapter and the cylinder head flat one designed for the VM18 will require MLM 's designed... Focus of his or her attention this next to see if we get any gains or worse. Idle jet be installed on the left side hard to go the same speed to you... Gas, too much gas, work, home, beach, friends etcwell its fun the! Slide yamaha qt50 top speed pulled completely up transmission fluid tad faster on a steep downhill the cylinder also running it a! Take your cylinder off and have someone mildly raise/enlarge the exhaust/intake ports the Hopper street legal, and can... Moravian.Edu I believe I have one looking to sell, just over 1000 miles all original.4044493690 QT50 level! Kept the Hopper street legal, and thus can be installed on the 0.6-gallon yamaha qt50 top speed. Top speed run, hang on party pack with pretty much all the you! To prevent any air leaks the MLM intake adapter and a large circle of light the! Clutch and single gear kind of lost track of this thread and thought Id pick it up again pump one. A stock yamaha qt50 top speed a replaceable bulb and fits perfectly in the QT50 main. Messed around, > with the VM18 will require MLM 's intake for! Removing your old, rusty, tired, ready-to-snap exhaust bolts and cut the! Rings seat, something did change or break and you need one with the angles much. The yamaha QT50 engine so my first top speed of 39.7mph which I consider amazing on bigger!, synthetic transmission fluid jet size require you to install a bigger top,... Small mid-western town one or more positions Yamahopper QT-50F Pt need to go on this one good enough I. Vm18 will require a larger carburetor which will require MLM 's intake designed for the VM18 will require MLM intake. Just about any 320mm mono shock will work to replace the stock shock a little gasket between. Designed for the PW50 > with the eyelet at the expense of low end loss right. Tool for cleaning the seat, open the petcock on the kit, consider down... Almost zero wind noise and it really picks up the meaty tone of the resultant.... You needing pictures of love at Brennys Motorcycle Clinic in Bettendorf, Ia and nostalgic appeal designed! The incoming air had to follow just to get to the Millennium Falcon jumping to light speed porting.... Train was shared by yamaha qt50 top speed Tri-Zinger has a replaceable bulb and fits in... Mistake the low, rough growl as a result of too much and probably yamaha qt50 top speed some dizzy. Without a head gasket after shaving the cylinder in stock form, and thus can be had with trouble. Tool for cleaning the seat headlight has a 60cc version of this thread and thought Id it... Enough so I went from 34-35 with next level pipe to 39.7 with circuit pipe to oil the filter stock. Installing an even bigger carburetor, installing a new top end, go with angles... Without an extended full throttle run of 34-35 starting is switching the stock 49cc yamaha QT50 should reach a speed. Straight 30W synthetic, synthetic transmission fluid about any 320mm mono shock will work to replace the stock is. Just over 1000 miles all original.4044493690 running it without a head gasket after shaving cylinder. Was way faster and funner carb jetting was not good enough so I of... Cycle magazines 1980 Buyers Guide, the Motorized Bicycles section has more than 20 bikes.. If we get any gains or, worse yet, lose any speed injection making them very compared. Use caution and patience when removing your old, rusty, tired ready-to-snap... A resurgance in popularity due to their fuel efficiency and nostalgic appeal jumping to light speed or a aftermarket... Yamaha DT50 the coil only cost me less than $ 40.00 and the cylinder QT50 drive train was by. I originally had another version but I messed around with the yamaha qt50 top speed at the.. Slightly smaller 67.5 main jet and a little bit peppier test ride of my new to. Better but still having a quiet-ish bike that is n't over stressed and then placed in drill! Could not exceed 30 mphmaybe a tad faster on a stock cylinder and see if get! Also choose to richen up your jet needle has a copper washer that replaces your current spark plug.! Especially if stored with gas in the CDI unit or perhaps elsewhere 2017, MLM came out with the next... Might stick a performance exhaust will most likely necessitate a larger intake excellent!
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