I just read the article on Bjorn’s P3C and the issues with Rotorcrank installation. For those of us that a) use rotorcranks and b) have a P3C on order and c) do spend time in the upper rings, what are we going to have to sacrifice? Is there a fix that Rotor can come up with? Do we not sweat the 4mm offset and resort to riding bigger gears?
As one whose dream bike is now only a month or so away, what should I do? Try and buy back my DA cranks and ditch the Rotors?
Any thoughts?
i’m going to talk to gary and see whether that protrusion in the back can be ground off. i don’t know how important it is. keep in mind, this is ONLY an issue with THIS crank and THIS frame. i’ve never seen or heard of any other compatibility issues.
I also have a P3C coming (next week?!), and a brand-spankin’-new set of rotors to install on it. I would very much like to hear more about this.
-Colin
I also have a P3C coming (next week?!)
How do you know? My LBS can’t get a straight answer from Cervelo. I am awaiting a 56 frame that was ordered during Interbike. Not really bitching, because I know how these retail games are played, but I would like to know if you/your LBS is getting better info than mine. It may just be that my LBS is so far down the list the rep just doesn’t want to break the news to them.
I like the rotor cranks. I would be ticked if they won’t work on the bike.
No no, sorry, I don’t know anything special. It’s just that I have heard that the 54s are coming in late April/early May, and I THINK (the operative word being think) that I get the first one that gets to my shop.
Good to know you like the rotors. I haven’t used them yet, they are still sitting in the box, waiting to go on the new bike.
-Colin
keep in mind, this is ONLY an issue with THIS crank and THIS frame.
Sadly, I own the RC’s and have ordered the P3C (because who wouldn’t want one?), so the fact that this is the only combo that is likely to have a problem. . . well, it makes me feel special . . . but not in a good way.
Hi everyone,
This is not a big problem, what we have designated as a solution in the short term is to remove the spider inner plate and four torx bolts.
This piece serves as a preventive dust cap, if your system bearings fail due to heavy contamination resulting from this procedure (e.g. you ride underwater or into bad road conditions over a period of time), and you use a P3C, we will replace your bearings at no cost to you. The plate is not a vital component.
The factory in Spain is manufacturing replacement dust caps, machined thinner to fit the P3C and like frames, and we will provide these at no cost to customers with the P3C until they make it onto our production models.
For information on removing this plate, see: http://www.rotorcranksusa.com/pdf/rs4xinstallation.pdf page spider inner plate figure 7.4
Any questions or concerns, shoot me a PM or call
Thanks,
Way to go Gary!!!
Now that is customer support and concern for people using there equipment. I have never heard about a manufacturer acting so fast. That sure has to be a benefit of people using forums.
I might just have to go out and buy a set of Rotor Cranks and a P3C, just to get the great support.
Thanks Gary, I think we all appreciate your help. So we should simply remove the bolts and plate? Nothing has to be inserted in their place?
Thanks again, I can’t wait to get the rotors installed!
-Colin
Wow. I am stunned. I expected that you guys would have a workaround, but that is truly great customer service. You didn’t HAVE to do that, but you did. Kudos to RotorCranks and their good peeps. Now I can go back to anticipating my P3C with nothing but joy. OK, I have a little aggravation that I don’t know when I’m getting it and the racing season is about to start, but such is life.
“So we should simply remove the bolts and plate? Nothing has to be inserted in their place?”
Nothing has to be installed in place of the plate. We tested this set up on a certain US olympic female track racer’s training bike, a carbon Look, with success.
And yes, when you purchase Rotor Cranks (from www.RotorCranks.com) I will give you 110% pro level support, even drove an hour on the freeway on a Thursday night at 10pm to drop off a set of Rotors when an athlete’s bike failed to make delivery on the trip from Portugal to Oceanside (Cali 1/2 IM).
No kidding. True story.
hey Gary,
Great post,
What regulation point does born use???
Borjn fan.
.
What I really want to know is how to post an “o” with the two dots over it.
“What regulation point does Bjorn use???”
I make it a policy not to comment on our pro racer’s setting or chainring sizes (although they use several sizes depending on the course).
sorry ; ’ )
Okay, can you throw me a hint, plus or minus from the standard setting reccomended by you guys. its not like im going to beat him anytime soon , although some day, ha, and im gonna see his bike anyway if he is going to disney next month???
Thanks Gary, Ill toss some swimming tid bits your way, heheheheheehheehehhehe
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I can say that ALMOST every racer I sponsor, or sell to, uses the #3 setting, me included.
I have tried the #4 (4th longest line) setting for a few months, but the #3 worked better with my 85-90 RPM cadence.
I run 55/42 on 11/23 10sp
If Francois M. is reading this post, he can relay his experience with the two settings.
like this:
ö
There may be a better solution, but I copy/paste from Word…
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Things are never as bad as you think
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Things are never as good as you hope
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Slowman figured a solution that apparently works. Duplicate it on your P3C (you lucky bastard!) and just ride the damned thing…fast! IF that doesnt work, send to me.
come on, if you’re a fan you should know how to spell his name. Or at least write it the same way in two consecutive sentences.
Björn (not Born, although he was one day, nor Bojrn).
Requesting some info on Rotros (studies etc) I may fancy a set but woud like to know more. How are they for international availability ?