Fat tires, 7 speeds and (maybe?) 3 horsepower!
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Thread: Fat tires, 7 speeds and (maybe?) 3 horsepower!

  1. #1
    Senior Member TW-Brian's Avatar
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    Fat tires, 7 speeds and (maybe?) 3 horsepower!

    The guys at last week's Wrench & Ride got a sneak peek at my latest project - a fat tired Mongoose motorized mountain bike. Today I mixed up some 2-stroke gas & oil fuel and got it fired up and running. I still need to do some final adjustments, but third gear is about the fastest that I felt comfortable riding it today with the current brake setup.

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  2. #2
    Member Flieger's Avatar
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    That’s one nice install. A few years back I put 66cc motor on an old 21 speed mountain bike. It was a hoot to scream around the neighborhood on. One day there was a radar board put up to encourage people to slow down in the area. Big mistake, I couldn’t go by it enough times to check my speed. Managed to hit 22mph for a top speed. Was a lot of fun.

    I hope you get to enjoy your bike as much as I did mine.
    TW-Brian, littletommy, Ken and 3 others like this.

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    Senior Member TW-Brian's Avatar
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    Thanks Flieger!

    It was definitely a challenge getting that engine shoehorned into that frame. There are a few areas where some spinning things just barely clear both some soft and hard parts. If you think that the TW chain is a pain in the butt, try three different chains!

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    Super Moderator littletommy's Avatar
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    I did that a few years ago too, had it over 50mph with the dog in the front basket... I dared not go any faster.
    Tweaker, TW-Brian, Ken and 5 others like this.
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    Senior Member Fred's Avatar
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    What, no O-ring chains?
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  7. #6
    Senior Member SportsterDoc's Avatar
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    Quote Originally Posted by Fred View Post
    What, no O-ring chains?
    Funny, Fred!
    littletommy and Badgerflorida like this.
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    Senior Member Gerry's Avatar
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    Just recently stumbled across the freewheeling 'hub' for the front chainring. Boy, that added some major modding potential. Gave some thought to seeing how might integrate the front freewheeling feature to my Golden Eagle kit. As always, your execution and presentation are VERY IMPRESSIVE.
    Take care my Friend.........

  9. #8
    Senior Member Joemama's Avatar
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    Be careful Brian, that bike looks like a bone breaker.
    Badgerflorida, Ken and arbolmano like this.

  10. #9
    Senior Member TW-Brian's Avatar
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    Quote Originally Posted by Gerry View Post
    Just recently stumbled across the freewheeling 'hub' for the front chainring. Boy, that added some major modding potential. Gave some thought to seeing how might integrate the front freewheeling feature to my Golden Eagle kit. As always, your execution and presentation are VERY IMPRESSIVE.
    Thanks Gerry!

    Quote Originally Posted by Joemama View Post
    Be careful Brian, that bike looks like a bone breaker.
    You mean like this?

    Fractured triquetral bone in left wrist.jpg

  11. #10
    Senior Member Badgerflorida's Avatar
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    That’s a cool project. Great job. Street only? Or do you have plans to hit the trails? Cheers
    Ken likes this.
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