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  1. #1
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    home made Recumbent need help

    Hi, I want to make a home made Recumbent. I need help of knowing what the lengths of the bars are and angles. if you can help me id like that very much. I found these videos of people building them

    http://www.youtube.com/watch?v=5jWzp...eature=channel

    http://www.youtube.com/watch?v=T5YuS...ure=plpp_video

    thanks

  2. #2
    Senior Member gcottay's Avatar
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    There is an active homebuilders forum at BentRiderOnline.
    George
    Laissez les bon temps rouler

  3. #3
    Senior Member BlazingPedals's Avatar
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    Trek 7500, RANS V-Rex, Optima Baron, Velokraft NoCom, M-5 Carbon Highracer, homebuilt recumbent
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    Trikes are more complicated than 2-wheelers, but I think you're over-thinking it already. Think about where the chain will go and how you will link the front wheels. I have heard that the head tubes should point at the contact patch and that the trail values you'd want for a 2-wheeler are still valid. Beyond that, cut and braze, man! Oh, and ask in the builder's section when, not if, you mess up. I think the first two or three will be learning experiences.

  4. #4
    Senior Member gavtatu's Avatar
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    lowracer, highracer, moving bottom bracket, 2 tall bikesl
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    http://www.atomiczombie.com/

    i just eye `bikes` off pictures, and work from there, but `trikes` are slightly different, the maths required are more than i care for, lol !
    and bentrideronline homebuilders is EXCELLENT !

  5. #5
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    thanks guys!

  6. #6
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    Here's a trick I learned from a motorcycle DIY forum.
    Get a good side view pict of the bike. Measure the diameter of wheel. If you know wheel's dia is 20" (say a 406 wheel), and you measure the dia of wheel in pict is 40mm, then your conversion factor is 20/40 or .5"per mm.

    So if you measure the wheelbase in the pict as being 76mm, then you can extrapolate it to be 76 x .5 = 38"

    For head angles, seat angles, etc - just use a protractor (is that what you call the semi circle ruler with angles on it ?). Sorry for an alzheimer's moment.

    THis method has worked well for us.

  7. #7
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    Quote Originally Posted by JGaerlan View Post
    Here's a trick I learned from a motorcycle DIY forum.
    Get a good side view pict of the bike. Measure the diameter of wheel. If you know wheel's dia is 20" (say a 406 wheel), and you measure the dia of wheel in pict is 40mm, then your conversion factor is 20/40 or .5"per mm.

    So if you measure the wheelbase in the pict as being 76mm, then you can extrapolate it to be 76 x .5 = 38"

    For head angles, seat angles, etc - just use a protractor (is that what you call the semi circle ruler with angles on it ?). Sorry for an alzheimer's moment.

    THis method has worked well for us.
    thanks!

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