Help From You Metal Workers Wanted

Discussion in 'Motorized Bicycle Welding, Fabrication and Paintin' started by Fulltimer, May 11, 2011.

  1. Fulltimer

    Fulltimer New Member

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    I'm making a bracket out of aluminum to mount saddle bags. I have it formed to the shape of the fender, side to side. Now, how can I bend it to the curve of the fender, front to back in other words.

    I'll post a picture of it shortly.

    Terry
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    #1 Fulltimer, May 11, 2011
    Last edited: May 11, 2011
  2. DaveC

    DaveC Member

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    Sand bag and round end hammer. And it will probably take a while. Use a torch to anneal the metal to soften it. You might have to heat it several times as it work hardens.

    YouTube - METAL SHAPING TIPS
     
  3. camlifter

    camlifter Active Member

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    i doubt that you'll ever get that beat into the shape you want. the metal is to thick. it will need to be hamered and put through a shrinker. and that looks to thick. i'd try to just trim it so the top loop part is the same size as the strap part. or make the loop strap part out of light gage steel and bolt the aluminium plates to it.
     
  4. Fulltimer

    Fulltimer New Member

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    Hmmm, what if I cut back the top part to make it not so wide? I would think it would bend pretty easy then. My idea on the top piece was I would need the width for better support.

    New idea. I have some 3/4"X1/8th inch aluminum metal. I could attach it to the bottom piece (2 per bag) in the shape of a "V". The braces would attach to the fender. Plus that top piece cut down so it can bend. Thoughts?

    Terry
     
  5. Tinsmith

    Tinsmith Member

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    Fulltimer, That bend will be quite a challenge with out machinery of some sort. If you can brace up the fender why not just rivet on the saddlebag hangers to the fender? Just a thought. Dan
     
  6. Fulltimer

    Fulltimer New Member

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    They will be hanging on the fenders. Or at least the frame for the bags will be.

    Terry
     
  7. Estaban

    Estaban New Member

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    The load from the bags is going to be transmitted up the strap, trimming the front and back shouldn't compromise that, unless your planning on carrying bricks in your saddle bags....also you should radius the corners, sharp angles will be stress failure points
     
  8. Fulltimer

    Fulltimer New Member

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    Thanks for the tip! I'll do that.

    Terry
     
  9. Ted

    Ted New Member

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    First off your working with a compound radius and you won't get what you want, as y;ou try to bend it it will spread,,,and that's a promise. I suggest that you use fiberglass or one of the super hard epoxies to form the fender radius, you may have to shorten the legs a bit for clearance.
     

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