Sidecar bumpers

Discussion in 'Hacks' started by hsblue, Oct 19, 2013.

  1. davebig

    davebig Another Angry Hun !

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    I believe I'll eventually get around to some pickup bed liner on the bottom of the tub as a skid plate, lately at my buddies welding shop we've been repairing saddle tanks off semi tractors.
    They trap enough salt and moisture between the straps and gaskets that hold them on that they corrode and leak. I don't think that's a real fear for a sidecar bottom, but anything that traps stuff is problematic. DB
    #21
  2. walkingbear

    walkingbear Long timer

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    What do you think of seal/glueing the plate to the tub?
    #22
  3. davebig

    davebig Another Angry Hun !

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    I aint going there! What's the goal ? Skid plate ? Bolts and fender washer, being sure to get it flat againest tub , final assembly a bead of silicone caulk on the outside of plate to seal gap, but when one drills fiberglass you violate its waterproofness, gotta keep moisture out of laminate.On the other hand you live in AZ where moistures not a real problem.DB
    #23
  4. walkingbear

    walkingbear Long timer

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    I think as a bash plate and a mounting plate. There are some really nice sealing gaskets and yes, it is pretty dry here.

    I will be visiting jay the welder in the morning. Thinking of making a plate on the back for a battery box to run a larger battery.

    Also added a set of ROX risers and what a difference in steering. Shoulder's are much more relaxed
    #24
  5. Abenteuerfahrer

    Abenteuerfahrer Deaf on Wheels

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    True only if the fiberglass is of inferior build and where the F'glass is poorly saturated. DMC- then build me two solid halves. Of course as a precaution I did seal every hole that I made. Larger accessible holes were re-epoxied or re-resinated. Backing washer or plates for most heavy installations were also used.

    [​IMG]

    8mm thickness; pretty heavy layup

    [​IMG]

    WALKINGBEAR....

    You can pretty much attach your designed plate to the already existing mounts of the bumper then use longer screws to make it through the body with backing washers.

    [​IMG]

    cheers...
    #25
  6. Dan Alexander

    Dan Alexander Ride Far - Ride Fast

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    I hope Tom doesn't mind me stealing his pic but he's got a winch on a bumper that's not part of the frame. Will this actually pull the rig out of a bog without damage?

    [​IMG]
    #26
  7. davebig

    davebig Another Angry Hun !

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    Within reason think 4 3/8" bolts and washers in the tub floor.DB Where'd you find that ? It's the cutest Ural I've ever seen.DB
    #27
  8. Abenteuerfahrer

    Abenteuerfahrer Deaf on Wheels

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    Agree Db.. one of the cutiest Ural ever seen. :clap

    Winch is alright. The Tub is mild steel and the pull from the bumper is most likely horizontal. Plenty strong for a lite-weight Ural compared to our Beemers, etc.

    cheers...
    #28
  9. Dan Alexander

    Dan Alexander Ride Far - Ride Fast

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    Ah, but maybe that setup won't work for me then with the 11GS ... I like the setup.
    #29
  10. walkingbear

    walkingbear Long timer

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    how about this
    [​IMG]
    #30
  11. Dan Alexander

    Dan Alexander Ride Far - Ride Fast

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    can you add a little mustache for Natasha while you're at it :D
    #31
  12. DJ1

    DJ1 Chopper Jockey

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    bumpers serve a great purpose, to protect the rig from bumps, small or light impacts/collisions. DaveBs bumper is the perfect example, if he bumped something light it would defended the car without damage to either, larger impacts like the deer he hit did damage to the bumper but the bumper absorbed the heavier energy and saved the rig from more damage.

    Getting hit by a 4 wheeled vehicle is almost a loosing situation anytime. If the bumper was strong enough to protect the sidecar then it would have to be very strong/heavy, the energy in the impact would then transfer thru the bumpers to the persons on or in the rig damaging the weakest part or parts.

    I learned this lesson the hard way racing on the circle track, I used pipe for my bumpers, they didn't bend at all, the old timers told me I should use lighter material. What did they know, they were always working on their bent up bumpers, I was 17 and needed that time for the girls.:wink: Well I spent my off track time straightening my frame because my unbending bumpers were transferring the energy to the frame, the weakest link always bends or breaks. It took me a little bit but straightening light bumpers were a lot easier than the frame
    #32