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DIY Spoke Tension Jig (pics)

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DIY Spoke Tension Jig (pics)

Old 07-11-21, 12:33 PM
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rmwesley
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DIY Spoke Tension Jig (pics)

To go with my wheel jig thread, more pics of a jig to calibrate tensiometer.

Same requirements as before... simple, flexible, able to cope with spokes from 135mm to 310mm.

Pics to follow...

Last edited by rmwesley; 07-11-21 at 12:41 PM.
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Old 07-11-21, 12:34 PM
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The bits...





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Old 07-11-21, 12:36 PM
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Tightening some bolts...







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Old 07-11-21, 12:39 PM
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Pics of bits...









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Old 07-11-21, 12:43 PM
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The clever bit... a turnbuckle enables very precise and accurate adjustment on the spoke tension.



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Old 07-11-21, 02:12 PM
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I like it.
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Old 07-11-21, 02:40 PM
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A number of them have been made by BF members

https://www.bikeforums.net/bicycle-m...ation-rig.html

​​​​​​https://www.bikeforums.net/bicycle-m...nsiometer.html
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Old 07-11-21, 05:15 PM
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80-20 and Unistrut are my favorite structural one-off/prototyping systems; you are making good use of 80-20 in your designs. Fine work!
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Old 07-11-21, 05:27 PM
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Looks great but what's the end game? I use a Park TM-1 which is considered not particularly accurate but it's more than adequate to make sure spoke tension is consistent around the wheel. Is it critical to know exactly what the tension is to within a small margin?
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Old 07-11-21, 09:16 PM
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Now pluck on the spoke and remember the note.
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Old 07-12-21, 12:17 AM
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Originally Posted by dsbrantjr
80-20 and Unistrut are my favorite structural one-off/prototyping systems; you are making good use of 80-20 in your designs. Fine work!
I love that stuff, it is just like grown up Lego. My finest hour was probably this... fish tank

Originally Posted by Nessism
Looks great but what's the end game? I use a Park TM-1 which is considered not particularly accurate but it's more than adequate to make sure spoke tension is consistent around the wheel. Is it critical to know exactly what the tension is to within a small margin?
Sometimes there isn't an end game and the drive to get there is actually more fun. But the goal was twofold... 1) to build a tailored reference chart for each spoke type I was using, and b) ensure accuracy didn't wander off over a period of extended use.
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