The wheelbuilding thread

Everything about building wheels, glueing tubs, etc.
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xis
Posts: 22
Joined: Thu Mar 14, 2013 9:57 pm

by xis

Thanks, Wookieopolis! I've read some pages of "The wheelbuilding thread", but I decided to open this one for two reasons:
(1) To don't mix information. (2) This wheel set can be interesting for others.

bricky21
Posts: 1405
Joined: Tue Sep 14, 2010 3:28 pm

by bricky21

I don't think that rear hub is any good for triplet. In my mind the only good thing about triplet lacing is the ability to have a huge NDS bracing angle while still maintaining enough spoke tension to keep from going slack. At your weight you don't need to worry about the Non Drive Side spokes going slack. You'll have a better wheel all the way around by using the standard 12/12 version of that hub imo.

by Weenie


eric
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Joined: Tue Nov 11, 2003 9:47 pm
Location: Santa Cruz, California, USA
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by eric

I'd use 2x on the rear. You need the spokes to be sort of tangential for torque transfer and with 1x they're only tangential a little. The torque will still get transfered and you won't be any slower but the spokes will stretch more while doing it and that could lead to reduced longevity.

I have built 1x DS 2x NDS on Bitex hubs and it works ok for me. Building 1x lets me lace the DS heads in for increased bracing angle.

On that front hub I prefer either 1x or heads in. Bitex put a large chamfer on the outside of the spoke holes. If you lace heads out the head sits in that chamfer and that leave the elbow unsupported. Eventually they break. That's my experience (and what I read from Jobst Brandt's book); other people including pro wheel builders say it's not a problem for them so perhaps I did something else wrong.

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Liggero
Posts: 963
Joined: Sat Feb 18, 2012 11:49 pm
Location: Netherlands

by Liggero

I have a very similar setup, but 24-28. those rims are too weak for 20+24, but anyway... you have to do radial on the rear non drive side and 2x on the drive side, radial on the front.

google for expocalc spreadsheet to calculate the spokes lengths or send me a message and i will send the file to you.

Questions; where did you purchased the components? do you have a nice cheap source? i´m specially interested in the cn spokes, I've heard they are nice and cheap.

best regards.
Happy Trails !!!

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xis
Posts: 22
Joined: Thu Mar 14, 2013 9:57 pm

by xis

bricky21, Thanks for sharing your opinion. I didn't know that. I'm almost completely blind to this subject.

eric, I've read some things about "torque transfer". The only thing I can say after reading some texts, is that wheel building is the "Nirvana", the "climax" of bicycle mechanics. Ha-ha! I really appreciate your help.

Liggero, I didn't buy the components yet, but I after buying and receiving the products, I will come back here to leave that information to whom it may concern. And thanks for offering help. I will send you a message. Now, I'm thinking in building a F24H_x_R28H. haha! Cruel doubt!

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Liggero
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Location: Netherlands

by Liggero

then, if you do 28 on the rear, you can go 3x on the drive side.

get a light spokes, otherwise this build will make no sense. those rims are too weak, and too narrow. I would suggest to go with a wider and stronger one, like the new pacenti.
Happy Trails !!!

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xis
Posts: 22
Joined: Thu Mar 14, 2013 9:57 pm

by xis

Yes, I think that 24x28 is better. And about the XR-200 rims, I've read that they are not the strongest, but do the job and are durable. What do you think? I see many people using these rims and not complaining about them. But, if you use them and you are telling me that, I must think about! :smartass:

SET UP:
2 rims = 770g
52 pokes = 234g
52 nipples = 20g
Front hub = 191g
Rear hub = 66g
52 Veloplugs = 8.1g
Total: 1.289g (Not bad, hmmnn?!)

The Pacenti seems to be a good option, but may be more expensive...

I see that there's a difference between "round holes" and "key holes" in the Bitex hubs. Do you know why? Maybe because of the different between round and aero spokes?

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xis
Posts: 22
Joined: Thu Mar 14, 2013 9:57 pm

by xis

I forgot that according to Bitex website, the RAF10 hub is only available in 16 and 20 holes and the RAR9 only in 24 holes. So, I'll come back to the "plan A" again.

shimmeD
Posts: 356
Joined: Thu Jun 28, 2012 10:52 pm
Location: eNZed

by shimmeD

I like this suggestion: Novatec hubs + Pacenti rims + Sapim Laser spokes.
Less is more.

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theremery
Posts: 2673
Joined: Sun Jun 12, 2005 10:56 am
Location: New Zealand

by theremery

He's 60kg, guys.....the XR200 will be strong enough for him ;)
Updated: Racing again! Thought this was unlikely! Eventually, I may even have a decent race!
Edit: 2015: darn near won the best South Island series (got second in age
-group)..woo hoo Racy Theremery is back!!

eric
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Joined: Tue Nov 11, 2003 9:47 pm
Location: Santa Cruz, California, USA
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by eric

Keyhole spoke holes are for bladed aero spokes. They make the flange weaker. If you use aero spokes like CX-rays you don't need them- they'll fit through standard size spoke holes.

Jobst Brandt's book is a good reference for wheel building.

bm0p700f
in the industry
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by bm0p700f

I'm 80kg and I have no issues with an 28H XR-200 laced 2x with Sapim Laser on a novatec F482 hub. I think I may be at the sensible weight limit for this rim though. At 60kg XR-200 will be more than fine. A 24H XR-200 however is asking for trouble.

I agree about the points made about triplet lacing, it needs a hub designed for it rather than a hub where less holes are drilled in the NDS flange.

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xis
Posts: 22
Joined: Thu Mar 14, 2013 9:57 pm

by xis

Thanks for all comments. I'm still in doubt, so I won't run with that. I'm feather weight, but I have an aggressive style on the road! I like sprinting uphills, jump small obstacles, escape the peloton at full power, etc... So, as I can see, people have a "50-50" comment about these XR-200 rims. Maybe, I will forget them and choose the XR-270 or the XR19W. They're still inexpensive but stiffer and more durable. Beyond that, I train in some rough roads around my neighborhood. The best option wouldn't be the lightest, but the more versatile pair of wheels. I could use the XR-200 without having problems, but I think I should limit my style. Here's the cover of the book written by Jobst Brandt that was recommended by Eric. Must be excellent!
Image

I'm gonna come with news about my choices soon... :thumbup:

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Zen Cyclery
Shop Owner
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Location: McCall, ID
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by Zen Cyclery

@xis- I would advise to be a skeptic of the XR19W. The low tension capacity and weight makes for a pretty soft hoop.

eric
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Joined: Tue Nov 11, 2003 9:47 pm
Location: Santa Cruz, California, USA
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by eric

I like the XR270s- they're reasonably light at around 440g and stiffer than other rims around that weight that I have used, such as Open Pros.

But I have cracked some at the nipple holes for the DS spokes. 120kgf is the limit I have been told, 110kgf is safer (assuming the NDS is high enough). I have tried sapim nipple washers on the DS but that doesn't seem to completely crack proof the rim.

by Weenie


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