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#1
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Spoke deflection - force
I built a wheel yesterday. Older 36H Shimano 105 hub, DT TK540 rim, DT
Competition spokes, butted 14/15/14. Will be used for commuting and heavy loaded touring. After truing and tensioning to about what I thought "felt right", I measured deflection with the Park tool at about 17 on each spoke. This guide tells me that for a 15 gauge steel spoke, that amount of deflection equals 70 kgf: http://www.parktool.com/blog/repair-...on-measurement DT's spec on that rim is for a maximum of 122 kgf (1200 N) per spoke. Whaddya think? A little tighter? -- K. Lang may yer lum reek. |
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#2
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Spoke deflection - force
On 12/11/2013 3:45 PM, Kiraly wrote:
I built a wheel yesterday. Older 36H Shimano 105 hub, DT TK540 rim, DT Competition spokes, butted 14/15/14. Will be used for commuting and heavy loaded touring. After truing and tensioning to about what I thought "felt right", I measured deflection with the Park tool at about 17 on each spoke. This guide tells me that for a 15 gauge steel spoke, that amount of deflection equals 70 kgf: http://www.parktool.com/blog/repair-...on-measurement DT's spec on that rim is for a maximum of 122 kgf (1200 N) per spoke. Whaddya think? A little tighter? Yes, use rim maker's value, assuming you have brass nipples with lubrication. Aluminum or dry nipples will make 122kgf a difficult goal. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#3
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Spoke deflection - force
On 12/12/13 09:06, AMuzi wrote:
Aluminum or dry nipples will make 122kgf a difficult goal. Push the rim sideways to temporarily reduce tension while turning the nipple. -- JS |
#4
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Spoke deflection - force
Whaddya think? A little tighter ? top out when truing is difficult maybe near the rim spec ?or your spec / lube flange holes with Teflon wax...fillem solid into horizontal wheel both sides. why not 2.0 DT spokes with long nipples for long life...yours.... ? what do you gain with 14 15 14 ? the price is interesting given exchange rates. Same cost as http://goo.gl/PNeHih |
#5
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Spoke deflection - force
tdf tdf tdf.....6 years ago finding a wide rhynolite was search n pray...
now a wheel for an REI 100 ! what ? Walmart...amazin' |
#6
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Spoke deflection - force
On Wednesday, December 11, 2013 2:06:09 PM UTC-8, AMuzi wrote:
On 12/11/2013 3:45 PM, Kiraly wrote: I built a wheel yesterday. Older 36H Shimano 105 hub, DT TK540 rim, DT Competition spokes, butted 14/15/14. Will be used for commuting and heavy loaded touring. After truing and tensioning to about what I thought "felt right", I measured deflection with the Park tool at about 17 on each spoke. This guide tells me that for a 15 gauge steel spoke, that amount of deflection equals 70 kgf: http://www.parktool.com/blog/repair-...on-measurement DT's spec on that rim is for a maximum of 122 kgf (1200 N) per spoke. Whaddya think? A little tighter? Yes, use rim maker's value, assuming you have brass nipples with lubrication. Aluminum or dry nipples will make 122kgf a difficult goal. I was surprised DT was spec'ing 122kgf (1200 n) -- but after looking at the rim, I can see why. https://www.dtswiss.com/Components/Rims-Road/TK-540 That's a nice, beefy, double wall socketed rim. Heavy, but nice. You could probably wind it up higher, but I wouldn't. I can state from experience that 122kgf will kill a DT 450. -- Jay Beattie. |
#7
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Spoke deflection - force
Jay Beattie wrote:
I can state from experience that 122kgf will kill a DT 450. Interesting - DT specs exactly that amount of spoke tension for that rim. http://www.dtswiss.com/Components/Rims-Road/R-450 -- K. Lang may your lum reek. |
#9
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Spoke deflection - force
On Thursday, December 12, 2013 5:37:38 AM UTC-8, Király wrote:
Jay Beattie wrote: I can state from experience that 122kgf will kill a DT 450. Interesting - DT specs exactly that amount of spoke tension for that rim. http://www.dtswiss.com/Components/Rims-Road/R-450 I cracked a spoke hole at that tension. My current 450s are running around 110kgf with spoke goop (boiled linseed oil). I could have gotten a bad rim. Who knows. -- Jay Beattie. |
#10
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Spoke deflection - force
Is this a front or rear wheel. If rear wheel, which side?
Stephen Bauman |
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