spencercan
New Member
i bought a 2012 Giant (brand, not size lol) mountain bike last year and married her to one of these standard "80"cc 2 stroke engine kits. it sat in the garage for about a year making me angry, until i was told that it wasnt working correctly because i had 34 spokes and i needed 36. thats a huge detail that was conveniently left off of the instructions for the kit, but it did the trick.
it runs great now, still in break in period, running through my last little bit of 24:1 mix. i have several questions, but first i am concerned that whenever i get at or above 35 mph, it sounds like its about to break. it sounds as if the back tire is rubbing on something. it doesnt sound like an engine noise to me, and it only happens above 35 mph (which is about its top speed on slight downhill). anybody know whats going on here and/or how to fix it? it has me scared to test its limits, which makes me mad.
also wondering if i need special tires or brakes for higher speeds? do i need to use any certain octane level gas? id really like to start modifying and making it faster, but not if its going to kill me!
it runs great now, still in break in period, running through my last little bit of 24:1 mix. i have several questions, but first i am concerned that whenever i get at or above 35 mph, it sounds like its about to break. it sounds as if the back tire is rubbing on something. it doesnt sound like an engine noise to me, and it only happens above 35 mph (which is about its top speed on slight downhill). anybody know whats going on here and/or how to fix it? it has me scared to test its limits, which makes me mad.
also wondering if i need special tires or brakes for higher speeds? do i need to use any certain octane level gas? id really like to start modifying and making it faster, but not if its going to kill me!