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Where to find spoke tension specs?(4 posts)

Where to find spoke tension specs?carpe_podium
Jan 27, 2003 3:21 PM
I just bought a Wheelsmith spoke tensionometer. The booklet with the tool said average spoke tension should be approximately 100kg (I'm not sure about the engineering units). Shouldn't this vary with the type of rim used? Where can I find data for specific rims? I have some Open Pros and looked on the Mavic site, but didn't have any luck. Is 100 or so adequate?
re: Where to find spoke tension specs?fredthebiker
Jan 27, 2003 6:36 PM
100kgf is a very basic number. That is usually what you hope to get on a front wheel, 120 for the rear drive side.

This is what you are trying to get for a standard, box section rim. For an aero rim(30mm and bigger), you look for 120 to 150.

It varies more by spoke type then by rim type. The spokes will only tension up to a point. A 14g will do about 450 lbs of tension or 220 kgf. A Revolution style will only d about 140 kgf. After that point, it is all stretch.

Hope that helps.
Spoke tension recommendationsCalvin
Jan 28, 2003 5:45 AM
This is something that we at Park Tool are working on. Some rim manufacturers are publishing tension recommendations, such as Campagnolo, Rolf and Shimano. I have gotten tension recommendations by calling other companies, although these companies have not published these numbers.

Generally, a thin, light weight rim should be less tension, say in Kilograms force, only 60 to 90. A heavy downhill rim may build as high as 120-140 Kgf. Some of the "paired spoke" wheels are recommending very high tension.

See http://www.parktool.com/repair_help/tm_1.shtml for more on tension and measuring tension.
Many Thanks for the info, very helpful (nm)carpe_podium
Jan 28, 2003 7:12 AM