top speed

I bought a motorized bicycle for cheap, everything works fine, How is it that I was able to reach 62km/h with it in a straightway, the bike is stock except a spring tensioner which I installed on it. I have a speedo on the bike as well as my cellphone speedometer and both where roughly at the...

My engine is a GT5 Stinger with a Jakes head and a ported cylinder body. I'm running a yz700 exhaust and a boost bottle. I also have an rt carburetor and an SBP shift kit, with an HD freewheel. My Bike frame is a Felt Vintage Iron Bolt, with a sealed gas tank. Im using the recommended NGK spark...

Hi y'all, new to the forum thing in general, I've got a 2 stroke grubee Skyhawk that I rebuild mostly with a Chinese clone. The clone I ran for about 30 miles but decided it would be better for parts considering the head and cylinder were one piece (ofc the seller online didn't show that). And...

Recently my friend and I both bought 66cc flying horse motors and put them on micargi panteras. He has a 90 degree billet and a speed nt carb and I have the stock nt carb and billet. We both recently tested our top speeds. My bike reached 23 miles per hour and his reached 37. Do y'all think that...

hey guys, im eventually looking to get my 48cc bike up to 55 mph to make it capable of in-city highways, as I have a long way to go to achieve this im gonna tell u all what ive done so far and plan to do so u guys can tell me if I missed something, I have a 48cc silverjet with a ghetto air...

Hi everybody my name is Aaron, and I am new to this forum. My problem I'm currently having is with my 48cc mega motors engine I bought from bikeberry. I built this bike about a year ago and have put 1500++ miles on it and it has ran great the whole time, but as of recently i have lost some...

49cc 2 stroke I've been breaking in my motor and am on the third gallon and just switched from 20:1 to 28:1 off an empty tank. The bike was running great for 20 minutes and got me to the store. Started the bike again upon leaving the store, but now it- -won't idle (at all) -takes forever...

I currently am running a motorizebike with the standard 80cc motor kit. I think these things are awesome wish i had one growing up as a kid. I currently dont have a car and I drive my bike 14 miles to get to school some days and its taking way to long at 18-22 mph 30+ would be awesome. I weigh...

hi, i bought my 80cc bikeberry kit about two years ago, and still have original everything except rear wheels. i was wondering if there was some sort of maintenance i should be preforming after this long. Because i havent done anything more then fill the tank and grease the chain. The motor is...