Pk80?



crassius

Well-Known Member
Joined
Jul 23, 2012
Messages
4,574
just started using these since my old supplier quit - finished testing and ordered 10 kits for now - I want some of the kit parts changed, so will have to wait to get more kits after they ship them into US - I cannot get the wide front mount in black color so will need to paint my own

I like the motors, but am not sure if all sellers have same motors - the ones I'm using are: http://shop.umotobikes.com/products/pk-boom-tm-66-slash-80cc-hyperpower-2-stroke-bicycle-motor-kit

These seem to have a bit more vibration at low speed (due to 40mm stroke I'm guessing), but it smooths out a bit at speed - seems to pull up hills better at low speed - has an aggressive hone on cylinder that gets close to full power after only a mile or so of run in. Ports looked good, but base gaskets weren't oiled, so I oiled all mine (note that there are two gaskets to clear that 40mm stroke).
 
Last edited:
Thread Status: Hello , this thread is over 3 years old. You can still reply if relevant, but sometimes it's better to create a new thread to get more replies!
Top