Sapim Super cx Ray spoke - tension table
Moderator: robbosmans
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I can say with certainty that you didn't reach the elastic limit of the spoke. That's somewhere in the range of 250-300kgf and other things would have broke first.WinterRider wrote: ↑Sun Jul 15, 2018 12:14 pmCant remember that kgf rating.. think in the range of 150 kgf.
Yup
When I look at DT-SWISS calibration/conversion tables, there is no impact of spoke length indicated. Nor does Sapim indicate any dependency
I assume irrelevant impact of spoke length, as long as measurement distance from Tensiometer is sufficiently shorter than full spoke length.
Spoke length used was 298mm
Not only does spoke size matter but also where you place the tensiometer in the spoke.robotec wrote: ↑Fri Aug 10, 2018 7:37 pmWhen I look at DT-SWISS calibration/conversion tables, there is no impact of spoke length indicated. Nor does Sapim indicate any dependency
I assume irrelevant impact of spoke length, as long as measurement distance from Tensiometer is sufficiently shorter than full spoke length.
Spoke length used was 298mm
At least tha is the case that happened to me.
Not for my tensiometer.
Get one that has minimal side load on the spoke for better accuracy.
https://www.wheelfanatyk.com/store/digi ... ion-gauge/
Get one that has minimal side load on the spoke for better accuracy.
https://www.wheelfanatyk.com/store/digi ... ion-gauge/
https://www.aliexpress.com/item/Spoke-t ... 25335.html
50€, I dont mind placing the thing in the same place...
50€, I dont mind placing the thing in the same place...
I've got a problem with my Park tensiometer. Squeeze and take a reading get one reading. Squeeze and pull the gage apart slightly and squeeze slightly so it takes a neutral setting on the spoke, get a lower reading. Seems like there's inherent friction in the gage. Looked at the gage and the end of the tension spring rubs against the head of a slotted bolt. There's no anti friction surface there. It's like the springs on caliper brakes before they put a plastic bushing there to prevent metal on metal contact and your brakes wouldn't center after a while. Flawed design, in my opinion, and I don't know which reading is correct, the squeeze and read or squeeze, pull apart... for a neutral setting. (This is hard to describe, so I hope there is understanding what I'm meaning).
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Hi Mike, you described it well. On my Park tensiometer I put a drop of lube there.
Cheers,
Damon
Cheers,
Damon
Damon Rinard
Engineering Manager, Road Bikes
Cycling Sports Group, Cannondale
Ex-Kestrel, ex-Velomax, ex-Trek, ex-Cervelo
Engineering Manager, Road Bikes
Cycling Sports Group, Cannondale
Ex-Kestrel, ex-Velomax, ex-Trek, ex-Cervelo
Visit starbike.com Online Retailer for HighEnd cycling components
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Verification of tensiometer reading vs tension in calibratorfabriciom wrote: ↑Fri Aug 10, 2018 9:05 pmNot only does spoke size matter but also where you place the tensiometer in the spoke.robotec wrote: ↑Fri Aug 10, 2018 7:37 pmWhen I look at DT-SWISS calibration/conversion tables, there is no impact of spoke length indicated. Nor does Sapim indicate any dependency
I assume irrelevant impact of spoke length, as long as measurement distance from Tensiometer is sufficiently shorter than full spoke length.
Spoke length used was 298mm
At least tha is the case that happened to me.
I compared 258mm CX ray and 292mm CX Ray and did the avg on 3 spokes each
shows tensiometer reading are virtually identical --> independent of spoke length .... when measured with DT Swiss Tensio
(I believe there is significantly more variation in how I am holding the Tensiometer and possibly spoke thickness affecting the reading than by spoke length)