Derailleur hanger for Cervelo RCA

Discuss light weight issues concerning road bikes & parts.
audiophilitis
Posts: 506
Joined: Sun Jul 29, 2012 12:49 am

by audiophilitis

Attempted to check alignment of the derailleur hanger on the RCA this afternoon and snapped the hanger while attempting to remove the RD. Must have used loctite on the RD bolt as I couldn't get it off. Coupe of questions:

1. Any recommend source/brand for a replacement hanger? Not sure if the RCA uses a standard hanger
2. Is the RD bolt on a Campy SR reverse threaded?

Thanks in advance.
Last edited by audiophilitis on Sat Feb 15, 2014 1:04 am, edited 1 time in total.

goodboyr
Posts: 1388
Joined: Wed Jan 10, 2007 10:56 pm
Location: Canada

by goodboyr

The RCA uses the same hanger as the regular R series cervelos. I bought a wheels manufacturing one as a spare. Wheels number is 163

by Weenie


ghisallo2003
Posts: 576
Joined: Mon Jan 02, 2006 7:10 pm

by ghisallo2003

No it is not reverse threaded.

Did you build the bike yourself?

I would be extremely annoyed if someone had done that to me.

audiophilitis
Posts: 506
Joined: Sun Jul 29, 2012 12:49 am

by audiophilitis

goodboyr wrote:The RCA uses the same hanger as the regular R series cervelos. I bought a wheels manufacturing one as a spare. Wheels number is 163


Is the Wheels 163 of better quality than the Cervelo? Thx.

audiophilitis
Posts: 506
Joined: Sun Jul 29, 2012 12:49 am

by audiophilitis

duplicate response

audiophilitis
Posts: 506
Joined: Sun Jul 29, 2012 12:49 am

by audiophilitis

ghisallo2003 wrote:No it is not reverse threaded.

Did you build the bike yourself?

I would be extremely annoyed if someone had done that to me.


Yes, build the bike myself. That's what bothers me -- no idea why the bolt seized. I'm pretty OCD when it comes to following torque specs.

bombertodd
Posts: 441
Joined: Tue Jan 22, 2013 6:23 am
Contact:

by bombertodd

I've had great luck with 925 Engineering hangers and the price is great. They are more durable in my experience than Wheels MFG but the finish is not as good (but they are 50-80% less money).

I don't see Cervelo on their website but you might try emailing them and see if they have.

http://www.925engineering.com/servlet/Service

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bearsdidit
Shop Owner
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Location: California
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by bearsdidit

Yes, the Wheels MFG hangers are much better. OEM hangers tend to be really soft. Most of the bikes we get directly from the manufacturer need to be aligned.

goodboyr
Posts: 1388
Joined: Wed Jan 10, 2007 10:56 pm
Location: Canada

by goodboyr

The Cervelo hanger that comes stock on the RCA appears to be of much better quality than the older cervelo versions. The wheels one is just a bit nicer looking. I think cervelo acted on the feedback by making the new ones nicer. So either way you should be fine.

audiophilitis
Posts: 506
Joined: Sun Jul 29, 2012 12:49 am

by audiophilitis

goodboyr wrote:The Cervelo hanger that comes stock on the RCA appears to be of much better quality than the older cervelo versions. The wheels one is just a bit nicer looking. I think cervelo acted on the feedback by making the new ones nicer. So either way you should be fine.



Thanks -- I just ordered a couple of the WM 163s. I'm now thinking this incident is probably a good excuse to switch to Campy SR EPS V2. Does anyone have this setup on an RCA? The V2 internal battery option is appealing -- just need to figure out where the charging port should be located. Appreciate your thoughts on this.

drmutley
Posts: 344
Joined: Fri Feb 11, 2011 4:23 am

by drmutley

It is reasonable practice to put blue loctite on the 2 retaining screws, as I find the often work loose on my cervelos. There has been numerous reports of rear dropouts snapping off on the earlier R3s, and granted this is due to the previous vertical screw orientation, I suspect a few of these were probably also due to loose hanger screws.

I concur with the boys above, the Wheels hangers are a good option. I'm running on one my S5 and it seems a little stiffer and required less realignment given I run Di2. Stiffer hangers however also have a safety trade off for your RD.

ghisallo2003
Posts: 576
Joined: Mon Jan 02, 2006 7:10 pm

by ghisallo2003

yes. locktite on the hanger fixing, but not the rear mech !

drmutley
Posts: 344
Joined: Fri Feb 11, 2011 4:23 am

by drmutley

ghisallo2003 wrote:yes. locktite on the hanger fixing, but not the rear mech !


Woops I missed that... Def no loctite on the RD bolt lol

AndreLM
Posts: 251
Joined: Tue Feb 05, 2013 11:53 pm

by AndreLM

audiophilitis wrote:The V2 internal battery option is appealing -- just need to figure out where the charging port should be located. Appreciate your thoughts on this.


I am planning to use the V2 battery on a NeilPryde Bura SL. I will probably leave the cable loose in the seattube, so charging would require removing the seatpost. Not ideal, but also not a deal breaker…

Another possible solution is to drill the seatpost instead of the frame… charging gets easier, but removing the seatpost becomes more difficult and risky… you would have to unplug the charging port before removing the seatpost.

by Weenie


audiophilitis
Posts: 506
Joined: Sun Jul 29, 2012 12:49 am

by audiophilitis

AndreLM wrote:
audiophilitis wrote:The V2 internal battery option is appealing -- just need to figure out where the charging port should be located. Appreciate your thoughts on this.


I am planning to use the V2 battery on a NeilPryde Bura SL. I will probably leave the cable loose in the seattube, so charging would require removing the seatpost. Not ideal, but also not a deal breaker…

Another possible solution is to drill the seatpost instead of the frame… charging gets easier, but removing the seatpost becomes more difficult and risky… you would have to unplug the charging port before removing the seatpost.


If the battery pack is installed with the wires on the bottom end, you will have to run the charging wire back up if you intend to access it through the seatpost. I think with the diameter of the RCA seat tube, there won't be enough room to run the charging cable alongside the battery pack. Since the BuraSL uses a 27.2 seatpost as well, won't you have the same issue?

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