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Old 08-12-13, 11:34 AM   #1
thugpipe
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disc brake mount specs

Hi, can anyone direct me to a good reference for specs and dimensions for disc brake frame mounts I am tired of trying to reverse engineer how to space the posts for a caliper mount by measuring the few I have access to. I would appreciate any help or suggestions.
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Old 08-12-13, 06:21 PM   #2
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the specs are on the sidebar on the Hayes support pages: HERE
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Old 08-12-13, 08:22 PM   #3
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the specs are on the sidebar on the Hayes support pages: HERE
Thank You so much that is exactly what I was looking for!
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Old 08-13-13, 08:07 AM   #4
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By far the cheapest and fastest way to get it done is to buy one of the Anvil disc tab jigs........bolt it in place and then fab the mounts to fit.

dave
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Old 08-13-13, 09:05 AM   #5
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The Anvil post-punk jig is very nice and if you want to use it for ISO you can use an ISO to post mount adapter
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Old 08-13-13, 05:30 PM   #6
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the anvil jigs are very nice but on my budget I will be building my own jigs but I like doing that kind of thing. thanks they make for good inspiration.
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Old 08-21-13, 07:37 PM   #7
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Ok, I think I have forgotten the following differentiation;

1) Which is the stronger mount ISO or Post --considering both ends of the bike?
2) Which one is the bike industry setting on for new after market brake sets?
3) Is either more appropriate for heavy duty applications?

Thanks
/k

BTW; I looked closely at the anvil jigs. Besides looking awesome, a couple are rather "affordable", all given as a builder can burn a lot of time frutzing with the mount and getting the tabs aligned well and time is money.
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Old 08-21-13, 07:50 PM   #8
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if you go with the ISO anvil jigs, you need front and back. With post mount, you just need one. Seems like a no-brainer since you can use an adapter to get any size ISO with the post mount.

ISO is as dead as a doornail in the industry. They are shipping brakes with ISO adapters, but that surely will come to an end fairly soon. There is a fairly limited number of post mount for framebuilders though, that is one disconnect.
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Old 08-26-13, 11:07 AM   #9
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Quote:
Originally Posted by unterhausen View Post
if you go with the ISO anvil jigs, you need front and back. With post mount, you just need one. Seems like a no-brainer since you can use an adapter to get any size ISO with the post mount.

ISO is as dead as a doornail in the industry. They are shipping brakes with ISO adapters, but that surely will come to an end fairly soon. There is a fairly limited number of post mount for framebuilders though, that is one disconnect.
UMAN - appreciated. Exactly what I needed. I, ll order an anvil jig n build only post.

On the same track...as my build interest is only on heavy tour tandems n singles...is there a rotor size you would rec I use? In the next day ou two I need to buy adisk kit so I can have a test mule for the shop...

/k
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Old 08-27-13, 08:21 PM   #10
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Quote:
Originally Posted by unterhausen View Post
if you go with the ISO anvil jigs, you need front and back. With post mount, you just need one. Seems like a no-brainer since you can use an adapter to get any size ISO with the post mount.

ISO is as dead as a doornail in the industry. They are shipping brakes with ISO adapters, but that surely will come to an end fairly soon. There is a fairly limited number of post mount for framebuilders though, that is one disconnect.
UMAN; I was noodling around and found the rear Post mount braze-ons bit at Paragon Machine Works ... URL is on the suppliers thread.

The steel ones are hidden on the second page...(they most have only their Ti stuff up front to see). Note that the bits seem a bit spendy to my eye, but available none the less. Also has a decent set of vertical rear drops with 2 eyelets cast in....

/K
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Old 08-27-13, 08:30 PM   #11
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I just saw those, they added them since I looked last, which has been a while
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