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  1. #1
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    Frame Reinforcement?

    Hello!

    I would like to know if there are exist any kind of reinforcement braces for bike frames. Something that can be detachable with screws and not by welding. I do think to a brace between the top tube and seat tube... I ask this, for a trekking bike who want's to support more weight. Thanks

  2. #2
    Andrew R Stewart Andrew R Stewart's Avatar
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    Well there is bracing already in the form of butting and lugs...

    But as to bolt on braces, none that I know of. Because, IMO, a frame designer/builder would rather build a frame that can accept the loads that are intended in the riding. I would thing that a bolt on brace would have the ability to not fully stay secure and there will be small but not subtle, WRT adding stiffness, movement in the torsional plane.

    AS I wrote this I do remember of one brace in the seat area. Motor pacing bikes have had a vertical bolt on brace from under the saddle's nose to the top of the top tube. I always thought that it was to insure that the saddle doesn't move under the significantly greater vertical loads that these bikes see on the high banks. Andy.

  3. #3
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    Quote Originally Posted by Andrew R Stewart View Post
    Well there is bracing already in the form of butting and lugs...

    Andy.
    Thank you for your answer Andy. Giving an research on google about that, I have seen some people done this kind of things on their bicycle, but most I've seen on motorcycles who need load more weight than was designed. I agree with you that a brace can actually just move the tension point and not reinforcing at all.
    By the same time, on a bike shop website, I observe they sell a type of trekking bike in two variants: one for over load and the other just normal. The bikes are the same, just the only difference seems to be a welded brace between top tube and fork tube.

  4. #4
    Randomhead
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    that's interesting, do you have a link to that?

    I think if your frame can't take the load you want to put on it that a trailer or an extracycle is the way to go

  5. #5
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    Quote Originally Posted by unterhausen View Post
    that's interesting, do you have a link to that?

    I think if your frame can't take the load you want to put on it that a trailer or an extracycle is the way to go
    Ok, I have to buy a car then.... and you are funny

    Look to the link: Strong SL - PEGASUS

    is the same as Pegasus Solero and Premio. I also have a Pegasus Milano

  6. #6
    coprolite fietsbob's Avatar
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    fabricating things that dont exist sold over the counter is usually possible , improv and mechanical aptitudes of OP unknown

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