All about Formula Brakes and their 4 bolted hubs

I got a set of evoluziones...unfortunately they're IS mount and the rear has a 160mm rotor. Fit the fork fine (contrary to the talk that DHOs were FS mount they are actually IS bolt spacing), but I need a FS (48mm) mount caliper in silver and a 140mm 4 bolt rotor. Anyone!?

got a rotor if You're interested

Hi, just got hold of a set of red formula brakes and hubs





Original dust but still working, shot bearings and missing rear axle. Discs have so much play it is a miracle they still hold.
So looking for a rear axle, the hubs service manual, original skewers, small discs, ...
Thanks

Someone gave me a few years ago a strong wheelset (Mavic D521) built with Carbonio hubs and a 180mm/ 140mm rotor combo but I have stopped using them for a while.
I am thinking of using them again on a dual suspension bike (not extreme riding though) and my question is about the actual quality of the rotors (the original aluminium/ steel ones). I have used them a few times with some Shimano calipers and once at the end of the ride there was a very steep road downhill for a bout a mile that required almost constant braking. Although I kept pumping and releasing, by the end of the road, the front rotor was so completely warped that it was rubbing badly. After cooling it for a few minutes, I braked once and it went back to normal. This did not give me much trust in it though.
Is it a common problem or do you think it was due to a bad pad/ disc combo ?
I am planning to use them with some Hayes calipers now.
Should I be better off replacing the rotors altogether?
Thanks for your help.
Cheers
Eric

I would say that you should use discs/pads/callipers of the same era. Mixing generations will probably lead to the kind of issue you already experienced, too aggressive pads eating discs, too powerful callipers warping discs, ...

Thanks xchox. I think my Hayes are roughly of the same era early 2000.
I'll give it a try.

Another 4 bolt, Hope this time, but anyone know the rotor size, as it doesnt match a 4 bolt modern front hub i have ,which i think is roloff pattern :?



Why go 4 bolt when you can go 3 :shock:

Re:

Does anyone have a copy of the FS mounting standard? I want to make some FS-to-IS adaptors.

Re:

Just got a nice set of red closed ones:

The later 51mm width.

I am still in need of adapters (48.5 or 51) for a non disc frame and for a Judy/Sid + this elusive rear Carbonio axle, anyone ? Thanks

Re:

Great old thread for old sucky disc brakes :facepalm:

So, these antique formula brakes came on my precious Sunn Exact 97
and being not overenthusiastic with there performance I went
bananas and swapped just the levers, closed originally to the open
lever.. questions is - can I do that? or will mr. Murphy come get me??