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PostPosted: Wed Feb 13, 2013 5:23 am 
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Joined: Wed Oct 26, 2011 2:10 am
Posts: 4
Hi!

For an 150lbs rider and 28h new Powertap G3 on a 38mm carbon clincher rim which lacing will be the best?

-2 times 2 cross
-2x NDS, radial DS

thanks!


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PostPosted: Wed Feb 13, 2013 6:28 am 
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Joined: Sun Jan 01, 2012 9:58 am
Posts: 387
someone with more knowledge than me will hopefully chime in with specifics, but i believe there are manufacturer defined restrictions for lacing patterns and spoke counts on powertap hubs to ensure accuracy of power measurements. I don't recall what the restrictions are or what models they apply to, sorry.

perhaps the kids in the wheelbuilding thread could answer with specifics?


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PostPosted: Wed Feb 13, 2013 12:23 pm 
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Joined: Fri Dec 15, 2006 7:45 pm
Posts: 3909
Location: Natovi Landing
mentok is right - there is a 2x min spoking for G3s

I actually recently had built:

- 38mm tub carbon rim
- P'tap G3, 24h rear
- 2x NDS and 2x DS with DT Aerolite spokes

Wheel feels stiff enough. I would say similar to Boras - i.e. not super stiff but certainly good.


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PostPosted: Wed Feb 13, 2013 1:25 pm 
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Joined: Mon Feb 04, 2013 10:04 pm
Posts: 54
As stated above, the powertap does require minimum of 2X on both sides.


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PostPosted: Wed Feb 13, 2013 2:48 pm 
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in the industry

Joined: Mon Sep 26, 2011 10:34 pm
Posts: 104
Location: Madison, WI
PowerTaps require a minimum of 2x. Radial lacing will void the warranty.

FYI I have both my G3 wheelsets built with 24 spokes and 2x on ENVE 45 and H Plus Son Archetype. The G3 builds a great wheel, much better than the previous generations. I can definitely tell the difference between the G3 and my old PT Pro wheels in terms of stiffness. Have fun with the build :wink:


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PostPosted: Wed Feb 13, 2013 6:20 pm 
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in the industry

Joined: Sun Jul 29, 2012 2:59 pm
Posts: 824
Location: Ruidoso, NM
It's funny how misinformation gets propagated. Many years ago Saris had a requirement for... actually 3x both sides... but it has been 2x on the NDS only for awhile now.

Per the G3 manual: "IMPORTANT: For your safety, the non-drive side of the PowerTap hub must be built with at least a 2x lacing pattern. Because of the patented PowerTap design, torque is
transferred through the hub to the non-drive side. Failure to adhere to this precaution will void the warranty."

But I'd never lace the DS radial. *If* you have derailleur clearance, you could lace the DS 1x heads-in. If not, best do 2x both sides. Using lighter NDS spokes will reduce the chance of them going slack.

_________________
formerly rruff...


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PostPosted: Wed Feb 13, 2013 6:26 pm 
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Joined: Sat Oct 09, 2010 11:42 am
Posts: 72
The latest specs on the website say "Hub must be laced with mimimun(sic) 2X pattern." I take that to mean both sides.
http://www.cycleops.com/en/products/power-meters/hubs/powertap-g3-hub.html?page=shop.product_details&flypage=flypage_images.tpl&product_id=542&category_id=20

The previous gen ones could be laced radial on the DS. I don't prefer doing that in any case.

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PostPosted: Thu Feb 14, 2013 3:11 am 
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Joined: Thu Dec 06, 2007 11:32 pm
Posts: 33
Location: Denver, CO
My 2x wheels are my favorites. 28 holes and bomb proof.


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PostPosted: Thu Feb 14, 2013 5:13 am 
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Joined: Wed Oct 26, 2011 2:10 am
Posts: 4
Thanks for all your answer!

Still an other question about spokes:

Same kind of spokes on both side?
Or
Different quality on NDS?


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PostPosted: Thu Feb 14, 2013 8:36 pm 
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Joined: Fri Dec 15, 2006 7:45 pm
Posts: 3909
Location: Natovi Landing
I went DT Aerolite all round. Because I've had good experiences with them, they are high-end, bladed, and matched the front wheel.


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