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PostPosted: Fri Oct 26, 2012 11:31 pm 
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Location: Slovenia---that forest land
Has anyone build POWERTAP hub G3 with Fulcrum speed rim (50mm carbon tubular)?

For this need 28 holes powertap hub. Plan is to build on NDS 3x (14 spokes Sapim cx ray) ; DS radial (7 spokes Cx ray or Sapim Race) with heads IN.

Max spoke tension on DS will be 140kg

Cheers

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Posted: Fri Oct 26, 2012 11:31 pm 


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PostPosted: Sat Oct 27, 2012 2:04 am 
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i dont know anyone who would build one that way. i can think of a million reasons not to, but that wasnt your question, so...


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PostPosted: Sat Oct 27, 2012 10:03 am 
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ZIPP have same lacing (Radial on DS, 2x NDS).

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PostPosted: Sat Oct 27, 2012 4:10 pm 
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kavitator wrote:
For this need 28 holes powertap hub. Plan is to build on NDS 3x (14 spokes Sapim cx ray) ; DS radial (7 spokes Cx ray or Sapim Race) with heads IN.


Absolutely not. Even with 140kg on the DS, your NDS spokes will have ~30kg of tension which isn't nearly enough. If you feel you must do this, lace the DS with 14 spokes, and the NDS with 7. But I wouldn't recommend that either, just because Saris won't approve it. I've done it though and it works fine.

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PostPosted: Sat Oct 27, 2012 5:00 pm 
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Proof that life is stranger than fiction :)


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PostPosted: Sun Oct 28, 2012 3:17 pm 
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kavitator wrote:
ZIPP have same lacing (Radial on DS, 2x NDS).

They have the same lacing, but only with an equal number of spokes left and right. As said above, there is zero possibility of having enough left side tension in your proposed 1:2 pattern. Fulcrum, Campy use 2:1 to even tensions out, your choice is going the wrong way.


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Posted: Sun Oct 28, 2012 3:17 pm 


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PostPosted: Mon Oct 29, 2012 10:14 am 
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mission aborted :-)
thanks .
guy who want a rear wheel powertap has one carbon rim fulcrum speed.
new rim for him. 50mm with 28 holes or 60mm 24 spokes i sugessted to him

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