1. A

    Wanting to motorize an vintage Schwinn Mohawk trike

    Hello, I found this really old neat trike a couple of years ago at a garage sale. I like it a lot, it looks very unique (and upon further research, seems pretty rare to find). Anyway, I've been thinking it would look even MORE cool if I could motorize it somehow, but I just don't really know...
  2. J

    Twin ignition system

    Is have just bought a twin ignition system from and I have no idea on how to install it can anyone help
  3. Sharif

    New to motorised bikes (Hello! & little help)

    So at the time of purchasing the 2 stroke kit for my bike I really didn't know what I was getting myself into until spending the last 2 weeks putting it together and dealing with one issue after another. I realised there is a lot for me to learn and I should have hopped on to the forums before...
  4. R

    NEED HELP no top end!

    So i tried posting a thread and it disappeared because I didn't have an account, well I'm back and I will use copy and paste until it works. Its a lot to read but if u can help me It'd be great! So I'm having trouble with my 66/80cc China 2 stroke. I recently built a new bike because my frame...
  5. N

    Is my bike motorizable

    I have carraro crp690 and i wonder if it is motorizable. here the link of bike. It has hydraulic disc brake and 26 inch wheeles. Frame size is 18inch.
  6. RIZ


    Hello all, I've made a terrible newbie mistake and purchased a GT frame from Gas pain Bikes. Now I can't figure out what headset and crankset will fit the frame. GB's info sucks so bad that I can't find the info I need to make the correct purchase. Can anyone be kind enough to help me out...
  7. J

    Choke does nothing, can't find vacuum leak...

    So I will preface this question by saying that I have had a lot go wrong with my bike lately and there may be multiple issues at play here... So the problem that I am having is that the motor is idling high and when I start unscrewing the idle adjust screw, once I pass a certain point it goes...
  8. B

    Performance loss .... HELP !!!

    So it all started when a screw for my exhaust broke inside the cylinder I tried to remove it every way possible, sadly it didn't work. I then got a replacement one online, when installing it I tightened it to much to the point that the cylinder head cracked. Unaware I tried to ride it and ended...
  9. You need people like me.

    Hello do you think this is a good deal?? Its 65 dollars, but im not sure if itll chooch like i the old one. I already have a pk80 engine kit from seeutek on amazon its been pretty good till i broke it doing amature work on. It now im looking for a new motor. Anyhelp would be greatly appreciated.Thanks
  10. P2skater1

    Leaner vs Richer Setting On Carb

    My spark plug has black residue on it, which means I'm running my carb to rich, correct? And if so, I'm going to adjust it to make it leaner. Is a leaner mixture going to decrease my bikes performance though? Or will it stay the same/increase?.
  11. P2skater1

    Break In Back Wheel is Extremely Hard to Move

    Hey, I just finished building my first motor bike and I have some problems. First off, the Back Wheel doesn't free spin when I engage the clutch. It is extremely hard to pedal and takes all my body weight (140lbs) to push down the pedals while pedaling. Once it starts up, it accelerates to...
  12. L

    Break In Back Wheel Is Extremely Hard To Spin

    Hey, I just built my bike and have some problems. When I engage the clutch, my Back Wheel doesnt free spin, and is incredibly hard to pedal. I have to stand up on the pedals and pedal with all my strength to get the bike moving while holding the clutch down. Then once the bike starts, it gets to...
  13. StreetDemonCustomCycles

    Pop, then lost most compression won't start now HELP

    Okay so I took my old engine that had been sitting under my house for around a month, the engine wouldn't start and I had a spare so I put it on and just left the old one, when recently I decided to see if I could get the other one going. It wouldn't start so I ended up riding WOT down a huge...
  14. T

    Help please motor won't start

    I was on my way to work on my motorized bicycle and the engine just died out of nowhere. I changed the spark plug and put a brand new cdi on and still won't start. Took head off and yeah there's a little carbon buildup but no scoring. Cleaned air filter and checked to make sure there was fuel...
  15. J

    Motor exploded in smoke?

    I've had my bike up and motorized for a few months now and have probably around 400 or so miles on it. While I was getting ready to ride it today, I made it about a block away from my house and the stock muffler broke off of its pipe. I figured no big deal and picked it up and dropped it back...
  16. keagan

    Internals for a new motor

    Hey its keagan so todays question is what is the best inturnals i could for a 66cc motor ive got a gt90 clone kit and was going to swap my guts from my gt5 into this motor but then this happened So now I'm in the need of internals for my hole new motor I have found This but it looks nothing...
  17. keagan

    Gt90 build help and tips

    Hello! I'm Keagan and I own a GT5 motorized bike I'm wanting to upgrade it and I bought gt90 conversion kit and wanted to get a new frame with a built in gas tank with front spring mounts the only one I have found this one. I don't want to spend over 500 on the frame as that's already quite a...
  18. C

    I need advice on building a commuter bike

    I've been riding a cheap walmart bike to and from work for about a month now, and i want to upgrade to a nice 4 stroke bike to help me out. 1. Can a cheap bike withstand the rigors of a friction drive 4 stroke? (Bike in question is the roadmaster granite peak bike, and the motor is the lock n...
  19. S

    Engine Trouble Will start for less than 5 seconds

    I will start my bike, it will run and keep going slower and slower over 3-5 seconds and get really rough then when I pull the clutch it shut off. What could this be? I just bought it and it's brand new bike. When I got it running, if I pull the clutch or let go of the throttle it will also...
  20. corey123

    Friction Drive Bike question Need help!!

    Hey guy's ...just got a friction gas bike the other day.....the cable thingy snapped on the back ...will post a pic...anybody know what this connects too..i know this sound's dumb but i have no clue about these bikes...need to try and re connect the cable...thanks