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PostPosted: Tue Apr 11, 2017 9:23 am 
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Joined: Mon Jul 18, 2011 7:25 am
Posts: 91
Started using 25mm tires and I am experiencing rub on the right seat stay (I realized this might be an issue). I noticed the wheel has even clearance at the chain stays, but is off towards the right seat stay?

The wheel checked out for dish and true, but the issue persists. Possibly the frame is bent?..2012 Cervelo R5 VWD.

Appreciate any advice, thanks.


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Posted: Tue Apr 11, 2017 9:23 am 


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PostPosted: Tue Apr 11, 2017 11:23 am 
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Joined: Wed Jan 22, 2014 11:48 am
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Location: Vienna Austria
Real 25s or Conti that are 28mm measured?


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PostPosted: Tue Apr 11, 2017 1:08 pm 
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Location: SYD
If you get a late 2015 or later model you can run 25s if not you'll have to redishing your wheel to deal with the asymmetric chain stays.. unfortunately cervelo has been late to the wife tire game

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PostPosted: Tue Apr 11, 2017 5:21 pm 
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Thanks all.


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PostPosted: Tue Apr 11, 2017 5:32 pm 
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yup. my friends R5 can only fit 23mm. and i think his is a 2014.

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PostPosted: Tue Apr 11, 2017 6:39 pm 
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Joined: Thu Mar 08, 2012 11:43 pm
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sugarkane wrote:
if not you'll have to redishing your wheel to deal with the asymmetric chain stays..

Sorry mate but that's completely wrong.

First, the OP doesn't have any chainstay issues, he's got seat stay rub.

Second, as far as the wheel is concerned the chainstays on the R5 VWD are symmetrical. The difference is that the NDS chainstay is wider on the outside. And if your wheel is rubbing the outside of the chainstay, you've got problems way beyond what a redishing could possibly fix :lol:


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PostPosted: Tue Apr 11, 2017 8:59 pm 
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Joined: Mon Jul 18, 2011 7:25 am
Posts: 91
wingguy wrote:
sugarkane wrote:
if not you'll have to redishing your wheel to deal with the asymmetric chain stays..

Sorry mate but that's completely wrong.

First, the OP doesn't have any chainstay issues, he's got seat stay rub.

Second, as far as the wheel is concerned the chainstays on the R5 VWD are symmetrical. The difference is that the NDS chainstay is wider on the outside. And if your wheel is rubbing the outside of the chainstay, you've got problems way beyond what a redishing could possibly fix :lol:


Thanks Wingguy.

As the clearance is symmetrical at the chain stays, does the asymmetry at the seat stay indicate a bent frame or a flaw during its' construction?


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PostPosted: Tue Apr 11, 2017 10:47 pm 
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Tricky1 wrote:
As the clearance is symmetrical at the chain stays, does the asymmetry at the seat stay indicate a bent frame or a flaw during its' construction?


If the wheel looks good between the chainstays but "off" at the seatstays (or vice versa), the most likely culprit is the dropouts are simply not in the correct location - they are out of alignment. I have seen this before - a regular on one of the groups I ride with has an R3 and every time I get behind him I notice that his rear wheel is off-center. At first I thought it was wheel dish but then he explained the frame is out of alignment. I think he bought it used so no warranty, still rides it.

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PostPosted: Wed Apr 12, 2017 12:36 am 
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Joined: Mon Jul 18, 2011 7:25 am
Posts: 91
Talked with a Cervelo shop who confirmed what some of you have said...The frame isn't made for 25mm tires, and it's common for tire rub on one seat stay. When the dropouts are bonded in, some deflection occurs resulting in the wheel rub on one side.

The tire rub only occurs under heavy loads as the bike is thrown side to side (and this isn't all the time). Im running bigger tires for the BWR next month and wanted a bit bigger tire for the dirt sections.

Appreciate all who helped!


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PostPosted: Wed Apr 12, 2017 1:40 am 
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Joined: Sun Mar 05, 2017 3:38 pm
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Unfortunately Cervelo has narrow wheel clearance.
I had ride 2009 Cervelo S3 before, Maximum usable tire width was 24mm(Specialized Turbo) for front.


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Posted: Wed Apr 12, 2017 1:40 am 


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PostPosted: Wed Apr 12, 2017 1:55 am 
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Joined: Wed Jan 19, 2011 11:14 am
Posts: 1771
Location: SYD
really wing guy... I've had to offset dish wheels for R5s but hey what would i know

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