142 hs

  1. R

    49cc frame recommendations?

    hello i own a flying horse 142f engine and i was wondering if anyone has ever used this frame? http://www.bikeberry.com/engine-kit-parts/accessories/bbr-tuning-26-motorized-bike-frame-w-2-4l-brushed-aluminum-tank.html#product_tabs_review_tabbed Mainly just looking for different frames for my...
  2. R

    142 engine feels like it's going slow

    I'm new to building motorbicycles and had my 142hs for a few months now, ever since I got it to run it feels like it's going pretty slow. It will usually not go above 20 and at top speed it bucks slightly and the acceleration doesn't sound right. Is there anything I can do to fix this?