Removing Cailper bolt

I am stripping down a reynolds frame ready for sand blasting and powdercoating.

Got most of parts off, just the cranks and the seatpost still to do, but I am stuck on how to remove the caliper bolt for the front and rear brakes.

Are they an allen on the back, can't see anything there, or do I just tap them out from the thread side. I still have the spring support on currently.

Not got pics as yet, but will post some to help illustrate..

Pics plz!

It's hard to see what part your talking about with this pic. Any chance of a close up.

I dont think I have ever come across a fork crown with a thread for the caliper, normally the bolts holding on the front brake just run through the fork crown and tighten with a nut on the back. In more modern designs this nut is recessed into the fork crown and is tightened with an allen key. It should slide out of the back of the fork crown with a bit of push/shove.

Weird. Do you have the brakes for this too? If so, a close up of them could also be useful so we can get an idea of how they go together. I've only ever seen brake mounts like dan just talked about.

This is how I thought they would be...

rear is the same

Looks like the phone focus'd on the background more!!

Abit too far away.. @work currently so will have to get better ones.

The brakes are Suntour/Dia-Compe Blaze, well its got the whole Blaze groupset.

Image from somewhere on the net

lush group set, i foolishly sold one but really liked the look of it.

Still can't really see what's going on but it looks a little like you still have the old brake axles / pin things still in the frame, albeit using a mounting system that I'm not familiar with. If you are going to fit the groupset in the picture, then you will need a hole to put the new brakes through. If there isn't any way to undo these axle / pin thingys, then I guess you could drill them out?

It came on the bike, which was free to a good home at work.

The brakes in the above, above picture where fitted, I have just removed them but stumped with the pins.

how did you remove the brakes? did you take off those little black caps?

Normally these are left in place and you remove the brake from behind the fork crown/rear brake bridge with a spanner or an allen key, keeping the whole of the rest of the brake in one piece.

Yeah under the black caps was 2 nuts, you could be right, but these needed to come apart for some loving (springs look like they have seen better days, but no matter how dirty the bike looks it was still working fine.)

I will have another look tonight, could be thats its just so dirty and rusty behind there that its had to tell.

aha! this is what a blaze brake looks like

so to remove the brake just untighten the allen key at the back of the fork. then pull the brake and the pin away from the fork as one unit. the recessed allen key nut is left in the frame and can be removed freely or with some WD40 to loosen it.

this is what the recessed nut should look like, it will be buried in the frame.

Yes this is what I thought it should look like, it was early so didn't have a proper look.

Glad its this setup... Now onto the Headset and Crankset! Then its off to the powdercoaters!!

Thanks for the help - Dan and Butters

Screw a long bolt into the recessed nut from the other side so that it stands proud from the frame, and give it a tap with a mallet - it'll pop straight out.