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Posted by: Rif TITLE: MOTORIZED BICYCLES:   Almost there...
Hi all,
I just can~t contain myself any longer; and since my roomie is tired of hearing about bikes and junk, I just gotta tell this to someone who can dig it before I explode.
I~m am almost done drafting the plans for the "transmission" assembly for the new motor, for my Schwinn Hercules! I should have them complete in about a week.
I have taken the design from a number of different bike engines. I worked out the aspects I liked and the aspects I didn~t care for- then combined all the good aspects.
I have also collected most of the materials I need. Aluminum can be quite costly, fortunately a couple of the shops I worked in allowed me to dig through their "scrap" bins, so most of it was free. Same with the steel.
The sealed bearings are no big deal, I have the part number for the replacements, and the cost is fairly minimal.
I still need to get a cup for the centrifugal clutch, as I need to take measurements and check the fit, etc. Once I have that I can finish the drawings and begin to let the chips fly!!!
40cc~s of screaming two stroke power! I fear, though, that the fun of designing and building this monstrosity will make the ride almsot anti-climactic.
I~ve never felt so in my element and alive as I have throughout this project which actually started way back in ~99.
Thanks for letting me ramble.
Rif
Posted by Rif
Hi Cal,
I~m using a Tanaka 40cc industrial two stroke. I held this motor up against my old decrepit Tecumseh 49cc for comparison and there is none! The Tanaka motor dwarfs that little 49er and makes it look like a model airplane motor.
The Tanaka motors are built and rated to run at full throttle for hours on end. Places like Disneyworld use them for their power equipment; weedeaters, blowers, etc. Talk about beefy, there is no doubt in my mind that with the correct gearing (drive wheel diameter) I~ll get up to 35 M.P.H. possibly I~ll be able to hit 40.
We shall see... I have been documenting the process. but I~m not quite ready to show the photos yet. Soon, very soon...
Rif
Posted by Cal
Rif, keep us all posted on your progress.
What are you starting with as the basis for your motor? I~ve heard weed-whacker motors are a good start.

Got any pictures?

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