My cranks give resistance, help!

When I run the tire on the ground and lift up, the cranks resist and stop spinning fairly quickly. It’s a 3 month old uni k1 green spirit and it’s been like this since day 1. It makes double crankflips impossible, and I really want to learn them. Any advice on how to get this baby goin? Thanks,

bearings are shot, overtightened, or improperly installed.

check em : )

I had my bearing caps too tight on my K1 when I got it. You should be able to spin the wheel and have it rotate freely for quite a while, if it can rotate for 30 seconds+, I think that’s acceptable. Also you shouldn’t hear sounds when it’s spinning, any sounds mean that it is rubbing on something.

EDIT: Well not ANY sounds, but you get the idea