help

  1. SoughtAnarchy

    Any advice on assembling disc brakes on BBR Tuning wheels?

    I recently bought these wheels and someone on here told me I should go for disc brakes instead of rims brakes. I have a standard cruiser set up with this engine on it. Any advice from y'all would be great. Mainly trying to see what I'll need to buy to assemble it (i.e. the disc brake set, any...
  2. L

    Pick one!

    Howdy, I'm building a hill climber, not a street racer or commuter. There are so many brands and merchants selling motor kits now that it's crazy. I'm looking for guidance/tips on which kit I should select on a budget ;). 56 to 60 tooth sprocket Hopefully sprocket adapter If it's bad, I will...
  3. L

    Help! How do I put a two stroke motor on my bike if I have a rear disc brake?

    I recently have gotten intrested in 2 stroke bike motors and wanted to get one for my mountain bike. The frame was large enough and the tires were the right size, but I realized having a rear disc brake would be an issue. Is there anything I can do to get around this?? (Aside from taking out my...
  4. J

    Being more knowledgeable about my first build

    Hey everybody, I'm a noob and I kinda don't know what the **** I'm doing.. I've watched a few tutorials as well as scrolling down a handful of threads on here, but I always seem to get confused because there's always a group of people saying one thing and then another group disagreeing saying...
  5. Bigwheelz

    Bt80 clutch help

    My bt80 electric start will not engage to go forward i guess you can say it starts just wont go please help! Is it the clutch?
  6. PluckStrumRide

    Original Fuel Tank Petcock Leaking *Help*

    The engine kit I purchased, which I've ran on 2 bikes (Currently on my profile photo) It has the standard/older style fuel tank requiring the female style petcock. The original leaked and the seal became useless. I ordered another. I apply thread tape to the tank to help with a better seal...
  7. B

    got a brand new kit and but revs wont come down

    got a brand new 2 stroke gas bicycle kit when i ride at a high rpm and pu the clutch in the rpms dont come down but if i engage the clutch a tiny bit it will bring it back down to normal idle speed and it idles just fine whats wrong someone help please
  8. B

    Idaho Law Clarification / My First Motorized Bicycle

    Hello! This is by first time on MotorBicycling.com! I live in Idaho and I am currently a Senior attending High School. For my senior project I made my first ever Motorized Bicycle! :) ( nothing special though, just a simple Chinese 2 stroke 49 cc engine. I figured I'd start out cheap with my...
  9. B

    Idaho Law Clarification / My First Motorized Bicycle

    Hello! This is by first time on MotorBicycling.com! I live in Idaho and I am currently a Senior attending High School. For my senior project I made my first ever Motorized Bicycle! :) ( nothing special though, just a simple Chinese 2 stroke 49 cc engine. I figured I'd start out cheap with my...
  10. O

    212cc predator build

    This is my first big build, I ended up getting the 212cc kit, and I need a good frame on a budget and im having issues finding one, ive checked my local shops and cant seem to find a frame to fit the motor. I'm new to a lot of this and dont have much money or income, I need a frame that can tide...
  11. PluckStrumRide

    12v generator help

    New to the forum. 3 builds under my belt so far. The age old question that I can NEVER sort out: How to get proper lighting on a bike? I'd rather skip buying endless amounts of batteries and buying lights that fail after a week or two. I HAVE found a 12v generator that installs next to the...
  12. Christina

    Help Huffy Panama Jack Motor?

    I have a huffy panama jack that I want to add a motor too, all i know about this stuff it that I want around a 50cc engine for my weight. Any advise that you all could offer would be fantastic. I would be riding on mostly flat terrain and I don't need anything that goes super fast. And something...
  13. P

    SMALL FRAME!!! I've already bought the thing! 1st BUILD HELP :(

    So I planned on whacking a 2 stroke engine kit from eBay onto a push bike and couldnt find any decent hybrid bikes in my area. I walked into a well known local bike shop and fell in love with one recommended by the owner - A Python Quantom 8000 Men's hybrid bike. I fell in love and purchased on...
  14. ilandz

    Many problems with chain drive system...

    I'm very new to motorized biking, having just finished turning an old 90's mountain bike into a speed demon. (or at least I hope it will be) The kit I got was a pretty standard 49cc 4 stroke from ebay. The biggest problem I've had so far is the chain that connects the belt drive to the sprocket...
  15. C

    Need help: first build; engine wont start was origionally running

    So I have set the engine onto the mountain bike have checked the spark plug for spark and I do get spark when tested on the outside case. I can get the engine started when I peddle to 20km/h but it wont idle and The throttle needs to be full throttle. If I start at a lower speed I get...
  16. Memy1251

    Won’t idle:

    hey guys, so my first build i ran it and the engine idled flawlessly. For a while, then the bike would no longer idle. When I pull the clutch the RPMS shoot sky high. When I leave the clutch it’s always trying to go like a car placed in “drive”. Any ideas? Thanks guys!
  17. Memy1251

    Parts vibrating loose

    HEY GUYS! Just built my first beauty. It’s running well and strong aside from when I picked up a nail. However I have a question about how you guys like to secure your gas tank and mufflers. My attached components are tending to vibrate loose. Am I just going too fast? Or if there another way to...
  18. Memy1251

    Drive sprocket won’t turn

    So this is my first build, and once it was all together, I found that on disengaging the clutch the bike would not roll but what little slack the chain would allow before the chain would run out of play and snag. I’ve gone through clutch re-set and cleaning procedures, such as cleaning the pad...
  19. J

    80cc 2 stroke motorized bicycle bike problem help

    So, my 80cc 2 stroke motorized bicycle bike runs normally for 7-10 minutes but then it starts to jerk and the thing starts to shut off and can't turn back on. (it feels like gas isn't going through properly) But then a day later, it worked again! but the same problem happened!! HELP
  20. C

    Where did I go wrong?

    Hi y'all, new to the forum thing in general, I've got a 2 stroke grubee Skyhawk that I rebuild mostly with a Chinese clone. The clone I ran for about 30 miles but decided it would be better for parts considering the head and cylinder were one piece (ofc the seller online didn't show that). And...