3x wheel build too much?

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Choco
Posts: 6
Joined: Fri Mar 15, 2013 1:50 am

by Choco

Have a Frankenstein wheel build in the works and am wondering whether 3x is too much of an angle for the build, any experience from the experts appreciated?
Don't ask why i'm building such a bizarro build, it'll serve a few purposes :)

Brakes: Disc
Rims: 38mm 571 ERD
Spokes: 32/32h 2.2 Bladed
Front hub: Dynamo Disc; PCD 58/52; C-C 25/25
Rear hub: PowerTap Pro Disc; PCD 74/70; C-C 31.3/18.5

Thanks

Choco
Posts: 6
Joined: Fri Mar 15, 2013 1:50 am

by Choco

Sorry wrong forum, please move...

bm0p700f
in the industry
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Location: Glermsford, Suffolk U.K
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by bm0p700f

3x is perfect for 32 spoke build.

sigismond0
Posts: 236
Joined: Tue Feb 05, 2013 8:29 pm

by sigismond0

More importantly, you have disc brakes here. I wouldn't risk anything less than 3X. You certainly can't go radial on front or either side of the rear, and 1X will almost certainly break under braking strain as well.

manninen
Posts: 32
Joined: Fri Jan 28, 2011 8:02 am

by manninen

i found 2x in front is enough

Image
622g

gilesharrison
Posts: 231
Joined: Tue Nov 04, 2008 6:44 pm

by gilesharrison

Manninen,

Although that 2x build will work, the forces applied from flange to spoke under power or under braking (if using discs) will be far from ideal.

Ideally, the spoke elbow will be 90 degress away from the rim nipple. ie. if the spoke joins the rim at 12 o'clock, the elbow should be at 9 o'clock
or 3 o'clock (depending on whether it is a trailing or leading spoke).

This is not the case with your wheel. I hope that makes sense.

quattrings
Posts: 482
Joined: Sun Nov 14, 2010 10:25 pm

by quattrings

I'm building something similar. h+son FF rims on Alfine hubs with discs. I went with 3x and would not risk using anything less, even though the hub flanges are pretty hefty.

mentok
Posts: 522
Joined: Sun Jan 01, 2012 9:58 am

by mentok

what about the spoke angle at the rim? it's a 38mm rim...

gilesharrison
Posts: 231
Joined: Tue Nov 04, 2008 6:44 pm

by gilesharrison

Any differences in spoke angle at the rims will be so miniscule that it's irrelevant. It's the angle that the spoke leaves the hub that's relevant.

Colin
Posts: 709
Joined: Mon Mar 02, 2009 4:50 am

by Colin

Specialized sells their mountain bike disc wheels with a radial DS on the front. Even heard of people using 1x on the NDS front. I've also used plenty of wheels laced 2x front and rear on my mountain bike.

bm0p700f
in the industry
Posts: 3654
Joined: Sat May 12, 2012 7:25 pm
Location: Glermsford, Suffolk U.K
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by bm0p700f

Specialised will be using a hub designed for radial lacing also there rims will have thick spoke nipple beds as braking forces are large. Also just because Specialiased are selling radial laced disc brake wheels does not make it a good idea. 3x lacing works well for a 32 spoke wheel why bother doing anything else. Other lacing patterns are only done for looks or to be different no real practical reason and the result is an inferior wheel. It may function well for a long time bt still is not as good as it could be.

Colin
Posts: 709
Joined: Mon Mar 02, 2009 4:50 am

by Colin

I was just saying that it could be done, and has been done with success. I have personally used notubes mountain bike rims laced radially, And there are disc hubs that are meant for radial lacing up front (extralite). That said, from the sound of this wheel build, 3x sounds perfect, but for a more weight oriented wheel build, other lacing patterns can be used. Can't forget what site we're on! 8)

gilesharrison
Posts: 231
Joined: Tue Nov 04, 2008 6:44 pm

by gilesharrison

Thing is, the weight saving of 2x over 3x is almost nothing (if comparing the same number of spokes). You might save 5-10g per wheel.

May as well just use the design that'll give you a better wheel.

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