|Advantage to Ritchey OCR Rims?||JBF|
May 24, 2002 12:18 PM
|I'm building a set of wheels on Campy hubs and noticed that Campagnolo factory wheels are all built on off-center drilled rims (to reduce wheel dish in the rear). Would I be better off trying an offset rear rim also? The only one I'm aware of is the Ritchey Aero Pro. The alternative for me is to go with Open Pro's or Aeroheads.|
|Yes, but for some it won't matter...||sprockets2|
May 24, 2002 1:50 PM
|because most people never tax the rear wheel system to the extent necessary to cause problems. The rear wheel is a pretty strong thing. Some people will report spoke breakage periodically on the DS-I have had a few-but rarely on the NDS (the only ones I have heard of personally were radially spoked NDS).
As wheels get lighter and have way fewer spokes it is advantagous to spread the energy impacting the rear wheel more evenly over the entire wheel structure-every spoke doing its share,etc. Hence the Campy OCR type rims. Some rider aquaintences of mine use OCR on their race bikes: they are sprinter-types and they tighten the rear OCR wheels up to the max and they say they can feel the difference in their sprint as compared to standard wheels. I don't know about that but in theory, it is plausible.
With the Campy wheels I just built, I was shocked how little tension is in the NDS spokes-and they were the right size, tensioned as high as I could. I resolved to move over to OCR rims for the rest of my rear wheels. I am big and ride hard, especially on my MTB, and I think the OCR is ideal for me. One example of how strong a conventional non-OCR wheel can be is the average MTB hardtail. We beat the snot out the rear wheel, and while they need some attention, they don't break all that often unless you're slacker-stupid and do things you shouldn't do on a HT.
|re: Advantage to Ritchey OCR Rims?||Matno|
May 24, 2002 3:52 PM
|OCR is certainly not necessary, but I've been using one on the back of my MTB (Ritchey OCR Pro) for two years now with very little truing. In fact, I think the truing I have done in the past was just because of a poor build. Now that all the bugs have been worked out, it's been MONTHS since I touched the spokes and the wheel is perfect. (I hit a whole trail of 3-4 foot drops last week with not a hint of "out-of-trueness." That's not an uncommon ride for me. I'm not heavy, but I do like to ride big rocks). Just my impressions. However, you probably can't go wrong with any of the choices you listed, OCR or otherwise.|| |