speed

  1. D

    Cheap expansion chamber available in Australia

    Hi, I'm looking for an expansion chamber for my 49cc china kit. At the moment I have the eBay banana pipe but I'm looking for something more for a decent price available in Australia. Side note, I have done a few things to my bike and I am in the process of doing more. I have done the; Banana...
  2. D

    Finding a nice expansion chamber in Australia

    Hi, I'm looking for an expansion chamber for my 49cc china kit. At the moment I have the eBay banana pipe but I'm looking for something more for a decent price available in Australia. Side note, I have done a few things to my bike and am in the process of doing more. I have done the; Banana...
  3. Murkle

    CVT What are today's thoughts on the use of CVTs?

    I'm Just wondering what your thoughts on the use of a CVT is...
  4. E

    80cc Motorized Bike vs 1000w Ebike

    Hello, I've recently ridden a 80cc motorized bike and loved the acceleration and speed. I've always wanted a ebike though, as it can hopefully keep the cops off my back. I was wondering whether anyone has had experience with both and could tell me whether they're relatively the same. Thank you.
  5. Cooters Carport

    What is the fuel oil ratio to run E85 in my 2 Stroke motor

    I was wondering what the fuel oil ratio to run E85 in my 2 Stroke bike engine.
  6. Sitherus

    Jackshaft Not maintaining enough to get up hills

    So it goes, I lose 10% power from the jackshaft because of gearing. Im having trouble maintaining my speed. I live in roanoke va, an you'd have a hard time finding a flat spot to ride. plus im using my bike for work. When im going fast down a hill and come to an uphill, I lose all power and...
  7. Matt Barrack

    Chainsaw VS Kit Engine

    So I got an old chainsaw that works very good. I also have a motoried bike with an engine from one of the kits you can buy. Would the chainsaw engine work better than the one from the kit? I know I made a thread like this earlier but this is more specific to my build. The current engine is a...
  8. inspectorcritic

    Why Don't I have Uniform Speed?

    I take the same stretch of road one day at 24 MPH next day I bearly manage 16 MPH also is a hazard on turning to cross the street I should have this speed to cross the distance of uncoming car but oops bog out.
  9. inspectorcritic

    Any One Tried This for Speed?

    Drilling your exhaust pipe soon as it makes the bend to prevent water from getting back into the motor. I got a ported cylinder that means larger intake extake the sounds to be more pop to the exhaust BikeBerry motor sounds so sweet and girly has pretty uniform sound this one is ruff & tuff and...
  10. Mp2003

    Bike too slow

    About a week ago I bought a 2-stroke 80/66cc bike kit. I installed it and after startup problems at first I managed to get it running smoothly, the only problem is, it is way too slow. It struggles to stay at 20mph with the throttle wide open. I checked the carb and the throttle runs fine, so...
  11. Lloyde

    What speed my Rear Sprocket will give me

    With all the calculators that have been added to this site, and their complicated ways of figuring out how fast you might be able to go, I have Finally found one that makes some freaking sense for the Rear Sprocket and its Speed/Power ratio! (to me at any rate) In the general disguise of a...
  12. P

    Engine Trouble Won't rev high enough?

    so a few weeks ago I put together my build from some years ago. Many thanks to SBP, specifically Jim for all his help. He personally emailed me with answers to all my dumb questions. Now I think I have some engine problems. My mixture is 40:1. My idle is what I consider perfect. My plug is a...
  13. slickdude

    At it again with L.A. City Council.

    The aim here is for the municipality to approve usage of all Bike Paths including Class 1 and also Bike Lanes by regulating them with a maximum posted speed limit. The law would permit usage of both Pedal, EBikes and GBikes regardless of top motor speed and size. All bicycle traffic would be...

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