Disc and rim wheels

[biggs682]

Been offered a cx bike with cantilever caliper braking but the bike is being sold with Mavic disc equipped wheels, surely this can't be good.

Will try and find the exact wheel info later

 

[T.M.H.N.E.T]

No it can't be good. A disc wheel won't have any usable brake track

 

[winjim]

No it can't be good. A disc wheel won't have any usable brake track

Depends what rim they've used. My disc wheels have perfectly usable brake tracks.

 

[winjim]

What's the OLN distance? Disc hubs are 135mm, road hubs 130mm.

 

[biggs682]

What's the OLN distance? Disc hubs are 135mm, road hubs 130mm.

no idea not seen bike yet not even sure if i want to

the wheels are mavic XM319 and i can only see them as 26" or 29ers which doesnt make sense at all

 

[T.M.H.N.E.T]

no idea not seen bike yet not even sure if i want to

the wheels are mavic XM319 and i can only see them as 26" or 29ers which doesnt make sense at all

Avoid this bike like the plague.

Depends what rim they've used. My disc wheels have perfectly usable brake tracks.

And they are?

 

[Spoked Wheels]

no idea not seen bike yet not even sure if i want to

the wheels are mavic XM319 and i can only see them as 26" or 29ers which doesnt make sense at all

Either would be 135mm

 

[biggs682]

Seller has just messaged me saying bike now sold, I dread to think about the implications of this bike and it's braking situation with the wrong rims on

 

[T.M.H.N.E.T]

Seller has just messaged me saying bike now sold, I dread to think about the implications of this bike and it's braking situation with the wrong rims on

I would not want to be braking on this surface.

 

[T.M.H.N.E.T]

Angle the blocks right, and it'll be fine for at least a week or two.

Then probably end in a crumpled pile of bones and metal. I'll stick to the hydro calipers for my braking needs

 

[winjim]

And they are?

Not Mavic XM319s.

 

[the snail]

If you look here
http://www.chainreactioncycles.com/...zi1YkMr5Y17XpBC_hqd3-xoC7LLw_wcB&gclsrc=aw.ds
Those rims look like they would work with rim brakes, but if you zoom in to the photo, there's a little icon of a rim brake with a cross through it. So no point running crying to mavic when they disintegrate.

 

[lpretro1]

Mavic XM319 are disc only

 

[Newman8]

Yes - but as per @winjim - plenty of people take regular rims with proper braking surface (say Mavic Open Pro/Sport, H+ Archetype, Ambrosio Chrono, or whatever else...) & build them onto a disc hub (hence 135mm OLN). It's only really recently there's a bigger choice of disc-specific rims, so you'll see loads of 'normal' rims on slightly older disc brake bikes.
29'er is just 700c - I think the bigger tyres intended designate it as a 29" instead of 28", but just the same really.