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Vapor speedo drive

Posted: Wed Mar 25, 2009 1:25 pm
by jason frost
Came up this idea yesterday.
Drill out the speedo cap nut so the wire can pass though, needed to use a bit of pastic pipe as a spacer
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looks like this when to together
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and fitted
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just need to mount the magnet on the hub but its dinner time now so will post pictures later when its done.

Re: Vapor speedo drive

Posted: Wed Mar 25, 2009 2:28 pm
by jason frost
Just ended up drilling into the drive and gluing in the magnet
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Re: Vapor speedo drive

Posted: Wed Mar 25, 2009 3:29 pm
by jason frost
Hub fitted
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and the other end
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Re: Vapor speedo drive

Posted: Wed Mar 25, 2009 3:33 pm
by jason frost
PeteSR wrote:excellent idea, had chance to test it yet?
Not yet thats down to Jackpot ;)

Re: Vapor speedo drive

Posted: Wed Mar 25, 2009 6:23 pm
by camel
im running a mountain bike one from my rear wheel,i take it you have to program in the diameter of the magnets..i would imagine it may be difficult to calibrate your diam being such a small diameter,and any error would be greatly magnified...but im sure its possible...fab idea tho and looks very neat..hope it works

Re: Vapor speedo drive

Posted: Wed Mar 25, 2009 6:28 pm
by shocky
camel wrote:im running a mountain bike one from my rear wheel,i take it you have to program in the diameter of the magnets..i would imagine it may be difficult to calibrate your diam being such a small diameter,and any error would be greatly magnified...but im sure its possible...fab idea tho and looks very neat..hope it works
the diameter would be the rolling road diameter of the tyre not the speedo drive were the magnet is mounted a bit like the way final drive is worked out on a gear box

Re: Vapor speedo drive

Posted: Wed Mar 25, 2009 6:31 pm
by camel
very true....my mistake :oops:

Re: Vapor speedo drive

Posted: Wed Mar 25, 2009 7:30 pm
by CANbus
Great idea Jason, are you able to advise about mounting of the display in the head set, how you do it? What's the visibility of the display like in sunlight, and darkness?

Re: Vapor speedo drive

Posted: Wed Mar 25, 2009 7:43 pm
by twin
yes i allso wud like to no how u mounted yours,and the frame its set into,
it looks spot on,i must say

Re: Vapor speedo drive

Posted: Wed Mar 25, 2009 10:07 pm
by sugarlump
I just did the same on a px disc hub this weekend, great minds etc :D . Great thing is it removes the problem of the magnet moving with suspension compression. Tapped the speedo drive holding plate (bloody imperial 7/16 thread though) and drilled the worm drive for the magnet too. Works with me spinning it so far - 7mph!

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