Motorized Bicycle – Part 1

Would you like to get 120 mpg? If you’ve got an old bicycle, $130 and some free time… then you can build a motorized bicycle for those trips to the corner drugstore.

This first video covers:

  1. Unboxing the kit
  2. Mounting the motor
  3. Mounting the muffler

Be sure to check out the great guys and gals at these forums for more help and advice:

Watch Part 2 on building a motorized bicycle.


  1. January 26th, 2010 at 21:07 | #1

    Awesome! Lots of tweaking on this one… I’m anxious to see how it works out. I (heart) metal shavings…:P

  2. Derek
    December 7th, 2010 at 02:30 | #2

    hello, i have a 66cc engine from and 1 of the teeth on the small sprocket on the motor broke so i have a new 1 coming. im not sure how to take the old 1 off do you know? if so please let me know i would hate to get over charged by a mechanic.

  3. adrian
    May 26th, 2011 at 10:05 | #3

    Whom did u buy the motor from may i ask?

  4. johnson
    July 11th, 2011 at 16:32 | #4

    It’s been my experience that 50% of the bicycle motor kits sent to America from China will have significant problems with production quality. The only protection you have is buying through EBay with a Pay Pal payment to give you some leverage against shoddy materials. I have purchased a motor using this process with several dealers with great success. I recently bought a 66-80cc motor from Kings Bikes and it installed and it ran straight up great and is doing so now. I assumed that they only sold a higher quality motors and bought a second one directly from them with my credit card. Bad move, it was a problem from the get go and tech service was only available for two hours in the afternoon if the tech wasn’t in court, unloading a truck or other excuse. When I got him on the phone through such devious devices as representing myself as a purchaser with a technical question, I got technically specific advice such as “you just have to fiddle with the screws on the carburetion” or “snug up all the bolts on the unit” and the best one is “we can send you a new part for cost and shipping”. You will find out what parts are covered when you try and get different parts because of poor manufacturing control screws that vibrate out, manufactured parts for the cylinder heads that will not seal (even with double gaskets and head sealant applied), chains that break, coils that burn up, clutch pads that don’t grab etc. The guarantee is for manufacturers defects that cannot be explained away by installer error, might be covered if properly documented and shipped prepaid to Kings Bikes (or several other dealer I have dealt with). By buying with EBay and PayPal there is a arbitrator for satisfaction, and usually you will get the parts for free or just shipping costs. Worst case scenario you ship the kit back for $25.00 shipping and get the balance of your purchase price back to try again. Bottom line is you don’t have to drop more money into a piss poor product to get a reliable running motor if you use this purchase method. Going to junk this motor and Kings Bikes as a supplier! You have been warned, (But no guarantees’)

  5. July 29th, 2011 at 06:19 | #5

    Brilliantly designed one and seems to be a nice one as per performance.

    gas powered bikes

  6. Ghazi
    September 21st, 2011 at 15:29 | #6

    H Adrian
    I must say your videos are well shot, your commentary is spot on, your workshop is clean,well organised, your workmanship is precise and well executed, what can I say I am highly impressed, many thanks

  7. May 13th, 2012 at 07:40 | #7

    Wow what a nice post.I am impressed from it.Can you more share with me.I will come back as soon.

    Thanks for more info……….

    Quality Used Engine

  8. Habeeb
    May 19th, 2012 at 22:21 | #8

    Beautiful post, nice breakdown from how to open the engine box to mounting a muffler. You should also understand the difference between 2 stroke and 4 stroke engines and bike engine parts. Use this resource

  9. May 19th, 2012 at 22:59 | #9

    Nice site Habeeb… nice engines posted there also. I think my next project will be using the honda engine from my tiller and building a friction drive bike

  10. July 8th, 2013 at 16:10 | #10

    Ha I once made a motorized bike out of a Honda powerwasher 5hp! to much tork, almost killed me. you can check it out on my blog!

  11. feri
    September 3rd, 2013 at 00:23 | #11

    hay my name is ferry
    I’m interested in the tools that you use
    Can I get it

  12. June 9th, 2016 at 23:38 | #12

    We are a Motorized Bicycle PartsFabrication Shop
    We are a Motorized Bicycle Fabrication Shop Located in Los Angeles We Specialize in Custom Parts & Accessories….

  1. January 26th, 2010 at 18:11 | #1
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