Robert,
In this case, a high-flange rear hub will get your spokes a few degrees closer to tangential, theoretically resulting in slightly less spoke wind-up and a stronger, stiffer, more durable wheel.
That said, the difference is probably not significant. Assuming you will be using Campagnolo Record hubs, with a HF, 28h, 3x configuration, your spoke angle will be about 83 deg. Same configuration with LF hub is about 81 deg.
As a side note, I would encourage you not to radially lace your front wheel. With a low spoke count like that and your size, each spoke will put a lot of load on its flange, and you run a higher risk of pulling the flange apart.
Greg Reiche CyclArt Vista, CA USA
-----Original Message----- From: classicrendezvous-bounces@bikelist.org [mailto:classicrendezvous-bounces@bikelist.org] On Behalf Of Charlotte Bronte Sent: Tuesday, September 01, 2009 5:33 PM To: classicrendezvous@bikelist.org Subject: [CR] Advice on building up 28 hole Mavic SSC rims for the occasional TT
I recently acquired a nice set of Mavic SSCs in 28 hole configuration and would like to build them up for a TT bike that is my next project. The bike is already graced with a Huret Jubilee rear mech, a hollow pin Regina chain, a Campy alloy corn cob freewheel, a Weyless post, a 3ttt SL saddle, an OMAS titanium bottom bracket, and some other choice bits. It's a mid 70s frame, and I'm trying to keep it more or less pre 1980.
My question is this: are high flange hubs the way to go for a low spoke count or does it matter much? This bike will only be taken out from time to time, and will probably be somewhat babied except for the occasional contre la montre. I may, however, race this bike in a sprint triathlon from time to time, if only to shock and awe the competition on their carbon TT rigs!
By the way, these days I run about 175-180 in race day form, if that helps.
Any advice, as always, welcome.
Thanks,
Robert Aguirre Windsor, ON
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