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clamp on v brake posts

Old 08-03-15, 07:30 AM
  #1  
catonec 
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clamp on v brake posts



Has anyone used something like these before? I have an alum mtn frame thats too small, so im replacing it. I would rather have carbon over alum and i am considering some of these to use my xtr v's (properly torqued of course). Is this a bad idea, or the worst idea?
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Old 08-03-15, 08:21 AM
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Probably not the best idea but it might work ok.

If you were to do it, you might want to also use a v-brake booster to give a bit more support.

You'd also want to make sure that the inner diameter of the clamp was a good match to the outer diameter of the seat stays.


Pace (a fork manufacturer) made clamp on v-brake mounts for some of their carbon forks.

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Old 08-03-15, 09:26 AM
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You will be clamping and applying force to a part of the frame not designed to resist that force. Not a good idea at all.
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Old 08-03-15, 12:53 PM
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Thanx, the booster is a good idea
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Old 08-03-15, 01:47 PM
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Originally Posted by FrozenK View Post
You will be clamping and applying force to a part of the frame not designed to resist that force. Not a good idea at all.
+1000
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Old 08-03-15, 09:14 PM
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Anyone have a lead on a hard tail, cf mtn frame with v brake posts? 18-19 inch, preferably new?
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Old 08-03-15, 11:12 PM
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I am using those Evolution brake mounts on my 4 year old sons Hotrock 16. They work okay, but take a lot of time to get set up properly.
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Old 08-03-15, 11:28 PM
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Originally Posted by FrozenK View Post
You will be clamping and applying force to a part of the frame not designed to resist that force. Not a good idea at all.
You will also be twisting the mounts when brakes are applied unless you source a U-shaped mount.



I guess I don't understand why one wouldn't just use disc brakes. Re-using inappropriate parts?

If you like your rims and tires, you can rebuild them with disc hubs.
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Old 08-03-15, 11:57 PM
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Originally Posted by CliffordK View Post
You will also be twisting the mounts when brakes are applied unless you source a U-shaped mount.
That's why I suggested the OP also uses a v-brake booster.

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Old 08-04-15, 08:41 PM
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Originally Posted by CliffordK View Post
...I guess I don't understand why one wouldn't just use disc brakes. Re-using inappropriate parts?

If you like your rims and tires, you can rebuild them with disc hubs.
Thank you for your reply, I have xtr combo shifters/levers, if I make the switch to disk, not only do I need to replace my hubs and brakes but also my controls. Thats a pretty steep cost to upgrade. As far as inappropriate? Ill leave that one for another thread.
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Old 08-04-15, 10:42 PM
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Originally Posted by catonec View Post
Thank you for your reply, I have xtr combo shifters/levers, if I make the switch to disk, not only do I need to replace my hubs and brakes but also my controls. Thats a pretty steep cost to upgrade. As far as inappropriate? Ill leave that one for another thread.
You could get cable actuated disc brakes. Honestly though, your best bet is probably to just sell the complete bike a new bike with 10-speed shifters and disc brakes.

Alternatively, you could probably find a used Al frame of the same vintage as your existing one for dirt cheap. It'd get you the right size frame. For the most part, CF wasn't widely used in MTB frames, until long after everyone switched to disc brakes.
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Old 08-05-15, 05:33 PM
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I dig it when people screw around with bikes, making all kinds of things work.

But I think they need to take it easy out there on these, "put together with odd parts bikes", as In stay off the Black Diamond single tracks...
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Old 08-05-15, 06:23 PM
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There appear to be a few Chinese companies that make CF MTB frames with canti mounts.

26inch Carbon Mtb Bike Frame,T700 Carbon Fiber Disc Brake Mountain Use,V Brake And Disc Brake Compatible From Carbonspeedbicycle, $520.0 | Dhgate.Com

Here is a Trek Y22SL with a CF mainframe.
Classic 1998 Carbon Fiber Trek Y22SL

Oh, and another suspension MTB frame.
26" Full Suspension Carbon Fiber Mountain Bike Frame Size Medium | eBay

And a really old Giant CF frame.
20" Giant CFM3 Cadex Carbon Fiber Mountain Bike Frame 1993 Retro Vintage MTB | eBay

Another really old Giant.
Giant Cadex Carbon Fiber Kevlar MTB Frame | eBay

Oh, this one looks like it cold end up being a deal. Brand unknown.
Lightweight 26" Carbon Fiber Mountain Bike Frame | eBay
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Old 08-05-15, 07:04 PM
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thanks everyone,

I know they're out there (carbon frames for v brakes) but if I have to use alum Im ok with that, as GSA said they are easy to find and cheap.

that last one you posted cliff is promising, wish it was a touch larger. Im 5.10, 17 in frame would probably work. My current trek is 16 with an extended post, it had always been ok until I started riding a roadie, now I feel cramped up.
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Old 08-05-15, 08:51 PM
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Various Titanium frames also show up for a good price from time to time.

Fuji Titanium Mountain Bike 19 inch Frame Vintage Cantilever Mount 1 1 8" | eBay
Titaium Mongoose Frame | eBay
Litespeed Unicoi Mountain Bike Frame 18in Large 3AL 2 5V Titanium Softail 26" | eBay

Also keep your eyes peeled for Craigslist deals. They show up from time to time, especially if you hunt for broken bikes.

I've just posted current auctions... a look through the history and you'll find quite a few previous CF and Titanium auctions.
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