wheel clearance issue 2012 Cervelo R5 VWD

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Tricky1
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Joined: Mon Jul 18, 2011 7:25 am

by Tricky1

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.

Marin
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by Marin

Real 25s or Conti that are 28mm measured?

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sugarkane
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by sugarkane

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

Tricky1
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by Tricky1

Thanks all.

kode54
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by kode54

yup. my friends R5 can only fit 23mm. and i think his is a 2014.
- AX Lightness Vial EVO D + DA9150 + Enve SES 3.4 carbon hubs
- Parlee Altum + DA9150 + Enve SES 4.5 carbon hubs
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- Independent Fabrication Ti FLW + DA9100 + Enve 3.4 CK hubs

wingguy
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by wingguy

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:

Tricky1
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by Tricky1

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?

Mr.Gib
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by Mr.Gib

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.
wheelsONfire wrote: When we ride disc brakes the whole deal of braking is just like a leaving a fart. It happens and then it's over. Nothing planned and nothing to get nervous for.

Tricky1
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Joined: Mon Jul 18, 2011 7:25 am

by Tricky1

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!

Eclat
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by Eclat

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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sugarkane
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by sugarkane

really wing guy... I've had to offset dish wheels for R5s but hey what would i know

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