I don't have a way to check what rpm I'm running. I just put it in there with a little end play and went for it. It doesn't sound like its over revving so I left it as is. I know these flywheels can come apart as to why I didn't just remove the gov. What rpms will these engines turn/are the flywheels coming apart at?
As for the tires, what speed would you consider these are rated for? 50mph really isn't that fast. This is just the starting point.
As for the tires, what speed would you consider these are rated for? 50mph really isn't that fast. This is just the starting point.
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Nice clean look to your mini, and wow a stocker going 49! When I first saw the speedo Apps I wondered (since I'm getting old) about accuracy but GPS' are right on the money with a car's speedo, or more accurate in some cases so the phone deals must be too?. Geez, and LONG ago I thought I was high tech with a great big Vericom performance computer "somewhat conspicuously" suctioned cupped to the front window. Those should have come with a pre-written speeding ticket in the box :doah: Looks like I gotta hit the App store.
The road I was on has very little traffic as they built a large 4 lane highway that runs perpendicular. Now this is just an access road for a few homes. I would say it hit max speed within 1/4 mile.
As for the GPS. They vary but mine is usually accurate +- 5meters. When driving in my car that has a digital speedo it is right on the money with my cars speedo. However it has a slight lag under acceleration due to the 5 meter accuracy. When doing a top speed run I hold my top speed for a good 5-10 seconds to ensure the GPS has had time to catch up and level off.
As for the GPS. They vary but mine is usually accurate +- 5meters. When driving in my car that has a digital speedo it is right on the money with my cars speedo. However it has a slight lag under acceleration due to the 5 meter accuracy. When doing a top speed run I hold my top speed for a good 5-10 seconds to ensure the GPS has had time to catch up and level off.
Speed parts added. 22t sprocket on the clutch, exhaust, filter, emulsion tube, 37 jet.
Just for looks. Different tank.
New top speed for now, 62mph
Unfortunately, the bike seems to have plenty of power on throttle. I cannot get the bike to idle at all with any combination of parts between stock or aftermarket emulsion tube. Or any combination of jets with either emulsion tube. I have the stock jet and 36, 37 jet. Looks like its time to upgrade to the 22mm Mikuni carb. I won't really have a way to regulate my rpms with it though.
Just for looks. Different tank.
New top speed for now, 62mph
Unfortunately, the bike seems to have plenty of power on throttle. I cannot get the bike to idle at all with any combination of parts between stock or aftermarket emulsion tube. Or any combination of jets with either emulsion tube. I have the stock jet and 36, 37 jet. Looks like its time to upgrade to the 22mm Mikuni carb. I won't really have a way to regulate my rpms with it though.
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It definitely slowed the acceleration down over the 12t. Just going by the seat of my pants feel cause my gps app is in my pocket. The clutch doesn't feel fully engaged till close to 30. On the other hand. My friend had his 125cc Z50 out there with me. I was pulling on him the whole time. He's got some weight on me too though. Best i could do on his the way its geared is 52mph. By all means the way it's set up its far from a drag bike. But it has a decent top speed for just a few parts. Also I'm just guessing going off of a speed calculator, my gov is still holding my rpms in the 4800-5000 rpm range. Once I upgrade the flywheel and internals ill be able to gear back down if I need to to gain that acceleration back. Just time and money. Ill be upgrading soon though.
oh yeah and a zip tie :laugh::thumbsup: you should need a new clutch after about one more ride with that gearing
180
Flywheel is cast steel, the fan on the flywheel is plastic. But you are correct. This is about the best I think it will do until I upgrade the flywheel, and rod for safety. Unfortunately ill be upgrading a lot of parts by the next time I take it out. I don't want to be tearing the engine apart multiple times just to see what it can do on billet rotating parts.
Flywheel is cast steel, the fan on the flywheel is plastic. But you are correct. This is about the best I think it will do until I upgrade the flywheel, and rod for safety. Unfortunately ill be upgrading a lot of parts by the next time I take it out. I don't want to be tearing the engine apart multiple times just to see what it can do on billet rotating parts.