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Thread: Frame design/geo feedback please?

  1. #1
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    Default Frame design/geo feedback please?

    I'm in the planning stages for frame 4, a go-fast-ish 700c road bike with classic road geometry. I'll be using PegoRichie and Newvex lugs. I don't race, my goal is a frame with long ride comfort and stability that doesn't handle like a semi, and that pays homage to the classic road bikes of the 70's. I know from my previous frames that this will fit me, but the geometry is a bit tighter than my earlier efforts. Here's the plan:

    https://www.dropbox.com/sh/yrssvbf5l...res/ruck04.pdf

    On the right track? Good? Bad? The drawing shows 700x28 tires, and has 1cm clearance to the seat tube...will this be enough if I use horizontal dropouts? Were chainstays a bit longer 40 years ago? I remember reading that the bikes that Merckx rode had 420+ mm chainstays. I also went for close to max brake reach with short reach brakes.

    Thanks!

    Pete
    Pete Ruckelshaus * Teacher, Fat Guy on a Bike * Collegeville, PA

    pruckelshaus' flickr
    Framejig.wordpress.com effort to collect DIY framebuilding jig designs

  2. #2
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    Default Re: Frame design/geo feedback please?

    Without contact points filled in, and comments about whether the position is fine/okay/ideal for you, it's hard to tell much atmo.

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    Default Re: Frame design/geo feedback please?

    Position is good for me, it's the same spatial relation to the 2 other frames that I have built for myself, both of which fit me really well. I think my main concern is the amount of trail (about 60mm) being too much, and the chainstays being too short for effective seated climbing (I don't want to pop wheelies going up the dragon's back).
    Pete Ruckelshaus * Teacher, Fat Guy on a Bike * Collegeville, PA

    pruckelshaus' flickr
    Framejig.wordpress.com effort to collect DIY framebuilding jig designs

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    Default Re: Frame design/geo feedback please?

    No expert fitter of designer here but I like the ride/handling of 60mm trail. But I also prefer a longer stay. Andy.
    Andy Stewart
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    Default Re: Frame design/geo feedback please?

    Yeah, the one change I have been considering all along is to bump the stays out to 420mm or so.
    Pete Ruckelshaus * Teacher, Fat Guy on a Bike * Collegeville, PA

    pruckelshaus' flickr
    Framejig.wordpress.com effort to collect DIY framebuilding jig designs

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    Default Re: Frame design/geo feedback please?

    Quote Originally Posted by pruckelshaus View Post
    Yeah, the one change I have been considering all along is to bump the stays out to 420mm or so.
    At the very least atmo.

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