What should you pay for (or sell) a Honda Express? Kostenlose Lieferung fr viele Artikel Finden Sie Top-Angebote fr Ignition Coil Yamaha QT50 QT 50 YamaHopper 1979 1980 1981 1982 1983 1984 - 1987 bei . If it does not, your compression will suffer. Although unlikely that any significant difference exists, the straighter version contributed more to performance than the "S" shaped version. Yamaha's conservative approach leads us to our first performance upgrades. Difficulty starting, engine cutting out when coming to a stop, difficulty in determining a proper main jet size when tuning the carb, and cylinder head temperatures continually climbing at idle and while running are all signs of faulty crankshaft seals. Add a new exhaust gasket and put a little anti-seize on the new bolts before installing. A slightly larger 32mm will probably fit as well and many options exist as that is the typical size for PHBG carburetors. Eleven is not so good when you dont need it like going slightly downhill. Ive had at least two qt50s with bald back tires. Noped Thursday 2.03K subscribers Subscribe 3.7K views 4 years ago Some further tweaks yet but 49.1 mph. The lesson of mopeds and nopeds is to find your next bottleneck and fix it. Consider it a $39 insurance policy. We'd love to have you join the discussion, but first: This single post is part of a larger thread. Home. That is just not going to work well. The seller will make you thicker base gaskets in copper or aluminum. Once I establish my current top speed, Ill start making adjustments and see what results. Motion Pro Rubber Sleeve (11-0045) 0 # mpn4565891373. The engine is smooth running, reliable, and long lived when proper maintenance is observed. The bigger rear tire is heavier and your qt50 in stock form may not be able to spin it at the same rpms as the original tire. The 50 in the name is derived from the 50cc engine displacement. 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. Try an 80 or 85 main jet. 278-27114-00) and super glue it to the original stopper so that you have two stacked together. Unlike 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. I can't believe that my county/town cops never approached me concerning its legality in my state given how much louder it was. Re: I got manuals for yall on the net for FREE. Reply Stephen Keller / keller_stephen Jan 10, 2020 11:49PM Price? Used Ulysse Speedometer app for my Verizon Thunder. I just bought an MLM peoples sidebleed pipe for my QT50/MJ50. My top speed now is somewhere around 28 mph. The content producer recommends safe practices when repairing, modifying, and/or performance enhancing mopeds, nopeds, small motorcycles and the like as well as working with power tools, hand tools, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this website. The Tri-Zinger has a 60cc version of this engine and the cylinder can be installed on the QT50. I ordered a puch 40mm head. The Yamaha QT50 Yamahopper was produced by the Yamaha Motor Company from 1979 through 1992. Categories. South of the gas tank is the resting place of the qt's petcock. 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. Get an aftermarket mesh air filter. This headlight has a replaceable bulb and fits perfectly in the QT50's headlight ring. Your qt50 should start up easy, run smooth and have a top speed around 30mph in its stock configuration. Be nice to her. Now my former paperweight had a new lease on life. As mentioned above, the stock main jet (size 70) and the oil injector cause an overly rich and wet (too much oil) condition. Such puny gains are not going to satisfy your QT50 fanatic. When cleaning the carb, focus on the idle jet and the seat where the needle sits. No title subtract $150-$250 (although you can register and get plates through Vermont so lack of title may not be so important or you may be in a state that doesnt require title); In its factory form, the Yamaha QT50 should reach a top speed of around 28-30 mph. Even if you already have one key, have a spare key made asap. All this is necessary to avoid seizing your piston as the performance exhaust will have the effect of leaning out your fuel/air mixture. Yamaha qt50 jump to light speed - YouTube Ha ha ha. The K&N RC-2540 Universal Clamp-On Air Filter is a good but expensive choice. Next, hold a finger over the spark plug hole and have a friend kick start the bike. Subscribe to: Posts (Atom) The other 2 wires are power for lights or battery. Stay tuned. Manufactured. Many mistake the low, rough growl as a result of a rev limiter residing in the CDI unit or perhaps elsewhere. I believe that Yamaha used a lousy charge coil on all models. So the caveat here is just because it runs and rides well doesnt mean you are home free. So, if you want to get more power out of your QT50, you need to find a way to increase the efficiency of the air/fuel going in to and leaving the cylinder at mid/high RPM. 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. Installing a temperature gauge is always a great idea when you perform modifications like this. 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. 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. Still waiting on a real cylinder head to arrive. I'll make videos of each top speed run and post them here. Maybe sooner if you want to be more cautious. Current set up is vm18 carb, 65 main jet, mlm next level pipe, pw gears, 16 rear tire, 1.0mm spacer. 4. 5. Performance upgrades, as listed above, exist for the QT50 that will make 50 mph~ attainable. I thought the stock exhaust might help in this regard. Once it gets on the pipe though, hang on! 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! Yamaha used two different stock exhausts on the QT50. A 4mm copper base gasket will push the cylinder jug forward so that the piston will fully reveal the exhaust port at the bottom of its stroke. Try a slightly smaller main jet; Want to post in this forum? 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. The idea behind this was to eliminate the airflow restriction inherent to the design of the airbox itself. Is there anything else I need to do before installing/using it? Check and see if all the lights and horn work. 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 popular choice is the IRC NR-77 moped tire: 14 x 70/90. I probably have more if I dig around. If these seals are bad then they will allow more air to enter the engine. They just need to make the cylinder "breathe" better at mid/high RPM. 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. Ill be interested to see the difference in head temps as compared to stock head. Ride, handling, braking and, to a small extent, top speed can be improved with them. 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. 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. It has a 15.15 SHA clone carb and currently running a 75 main jet. 6. 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. This is the trade off for more top speed. Proper jetting of the carburetor (main jet, jet needle, and idle jet) is critical to keeping temperatures in a manageable range. To see our full inventory go to brennys dot com. yamaha qt50 big bore party pack with pretty much all the stuff you need! Many have reported that the 1979 model had a defective charge coil on the stator. 2. On a large ride, I was able to keep up with the Puch's and Carabela's. It four-strokes fairly easily in the stock configuration so that you don't overheat and soft-seize under low load at full throttle. Hey, so do I. I'm running a 60cc top end on my QT with the Towny bottom end. You can also get an idea as to its compression by using the kick start. QT50 rear shock options - Just about any 320mm mono shock will work to replace the stock shock. Trail Tech offers a 14mm gauge for $39 or so. For Cable Housing. That extra bit of fuel that causes some four stroking is required by the engine when it is under greater loads like climbing hills, running into a strong wind, etc. 9. 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. Stay tuned. Carb needs replaced subtract $35; Yamaha Yamahopper qt50 top speed run, hang on! It also seems to help if you reconnect the common ground shared between the charge coil and the light coil. If it doesnt pass all the tests above, subtract as follows: Very rusty gas tank requiring replacement $80-100 deduction; 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. 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. I solved it by going from a 102.5 jet to an 87 and finally to an 85 main jet. Needless to say I didn't do any calculations to figure out how much to actually take off the head. Half the package or less is plenty. Check out the exterior of the carburetor. MLM makes a performance exhaust for the QT50, the MLM Yamaha QT50 People's Sidebleed Pipe. My Yamaha QT50 . Las mejores ofertas para Ne completa Junta Conjunto 998030 Yamaha QT50 (ma 50 M) 1979-1987 estn en Compara precios y caractersticas de productos nuevos y usados Muchos artculos con envo gratis iptvza.com. Will change jet and try again. 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. 10. I was bummin' that my 83 QT50 would bog out at 25mph. The Mikuni VM18 carb is almost as lethal as nitrous. The QT50 has the main throttle cable leading to a throttle junction where it separates into two cables. Traduire le commentaire en franais. Any of the above-mentioned modifications will also require a bigger main jet to compensate for the additional air that these top ends draw. 3. Yamaha MJ50 Towny two-speed crankcase and right-side swingarm. 3. This part is used to reduce the degree of performance for your motorcycle, for yamaha. When you do successfully extract them, replace them with new bolts of the correct size. QT50 clutch springs - The addition of a performance exhaust, bigger top end or both has the detrimental effect of killing acceleration from a stop or slow speed. A Q-tip cut in half and then placed in your drill is another handy tool for cleaning the seat. And cylinder got sanded down after 1.5mm of spacers added to open up all ports fully except intake at BDC. Theres a lot more flow now. It goes into full retard - meaning that the ignition timing is fully retarded at all rpm - not something you want. If you lose the oil pump, you also lose some of that snap-back tension. Remove the charge coil and install on the QT50 stator. 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. Again, a performance exhaust will call for a larger main jet in the carburetor. 2/1/16 Ok, just did a base speed test and hit 29.4 mph. Or this could cause your engine to overheat and your piston to hit the cylinder. 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! Needs both tires subtract $95-105; 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. Another option is to obtain a headlight for a Honda C70. Top speed without an extended full throttle run of 34-35. New cylinder head. 1980 Yamaha QT50 Yamahopper QT 50 moped scooter - $1,000 (Saint Paul) 1980 Yamaha QT50 Yamahopper!! 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. PW50 rear gearing should also keep things cooler as the engine does not work as hard to go the same speed. Stock Configuration and Basic Performance Upgrades, https://www.mopedarmy.com/w/index.php?title=QT50_performance&oldid=24781. If I bump up to an IRC NC 77 tire, Im going to a 70/9014 tire. I got manuals for yall on the net for FREE! (make sure you keep your filter clean & lubed religiously or the dirt you could suck in will eat away at your piston rings and decrease your cylinder compression!!) Yamaha may have intended that the bike run rich to promote engine life. Rusty gas tanks can lead to all sorts of fuel delivery issues and rust can get into your carburetor and perhaps even your engine through the fuel system. Ron Peek / yamahauler. Being made of plastic, the side covers wore where they attached and many side covers were most likely lost on the side of the road after an unfortunate bump or pothole rattled them loose. This is my yamaha qt-50, its a 49.9cc scooter with a top speed of 32mph. Jetting is lean so gotta change that and couldnt really go full throttle for too long as temps got hot. What should I look for? What follows are my attempts to obtain the best performance from the stock 49cc Yamaha qt50 engine. 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. You will also want the Malossi exhaust gasket. Worth it? $650 in Ohio may be the same as $900 in California or New York. 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. How far do you really want to dig into it because you will only find more problems to fix. So I can compare temps between stock head and puch head. 2/8/19 Ok, I gave up on the DR kit/stock exhaust combo. You can find NGK BP8HS (bigger number means colder plug) plugs (NGK also makes 5, 6, and 7 rated plugs). 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. So you want your Honda Express to go faster. 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). Spring is always the hot season for noped and moped sales. And Im happy to buy a non-runner because you often have to put as much into a running bike as a non-running bike. 1. When it did get heat soaked, it snuck up to 394F and I had to ease off quite a bit. Web designers, SEO consultants, etc. No such rev limiter exists. Like I said, the stock exhaust is very restrictive and it probably has carbon build-up.

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