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Any way to judge the lb of a ti spring missing text.

Discussion in 'Downhill & Freeride' started by wysiwyg, Jan 30, 2013.

  1. wysiwyg

    wysiwyg Monkey

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    Have a ti spring which is too long for my bike so can't sit on it and guesstimate, doesn't have a weight printed on it. Any way to work it out?
     

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  2. Uncle Cliffy

    Uncle Cliffy Turbo Monkey

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    Check around your area for an auto shop with a coil spring testing machine. They aren't cheap, so you might not find one...

    I think I read somewhere PUSH had one. Might be worth a call too.
     
  3. marshalolson

    marshalolson Turbo Monkey

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    any higher end motocross shops near you? take it to them for the above machine.

    or redneck way:
    stack up weight lifting plates on the spring and measure the distance the spring compresses from static.
     
    #3 -   Jan 30, 2013
    Last edited: Jan 30, 2013
  4. 0110-M-P

    0110-M-P Monkey

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    Only real way to know is to bring it to a shop that has a spring tester....however, I can probably get you a pretty good approximation if you can give me some measurements (with a set of calipers) and pictures. I would need....spring outside diameter, coil diameter/thickness, free length, and number of coils (or a picture of the spring).

    It won't be perfect because I'm going to have to assume a type of spring titanium, but it should be close enough to round to the nearest spring rating.
     
  5. wysiwyg

    wysiwyg Monkey

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    I'll take it to work and see what I can do.
     
  6. wysiwyg

    wysiwyg Monkey

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    Right. Lead to believe 350lb
    38.6 ID
    57 OD
    9mm coil dia
    147 FL
    7 coils inc the flat end sections.
    Sound right for 350?

    As for manufacturer. Pos a nukeproof
     
    #6 -   Feb 3, 2013
    Last edited: Feb 3, 2013
  7. 0110-M-P

    0110-M-P Monkey

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    Using Beta C spring titanium as the material, I am getting 361 lb/in. If you want I can take a picture of the work to show you...but I would say your 350 lb/in is probably correct.
     
    #7 -   Feb 3, 2013
  8. wysiwyg

    wysiwyg Monkey

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    Spot on. Cheers fella!
     
    #8 -   Feb 4, 2013