Drilling out a solid brake bridge to accept recessed nut

Has anyone had success drilling out a solid brake bridge ? I have the 'cube' type in the middle of the bridge. I was going to attempt it with a drill bit in a pair of vice grips but I think that works better for hollow bridges, this could be hard going right through . Is it a problem to drill from the front if the bridge? As it's flat I can support the lip of the recessed nut on the rear side

In addition the Existing hole looks slightly of centre on the back side , I'm worries drilling out to 8mm will take the hole too close to the edge, though I guess of r's solid it doesn't matter so much

Cheers

1 Attachment

You can see the recessed nut is nearly the width of the bridge so I would need too drill almost all of the way through

1 Attachment

looks like a nice frame, put a washer on the nut to protect the frame and then paint the nut blue. Alternatively don't fubar the frame use the correct brakes. [not much meat left on the cube after drilling the hole, weakened bridge? do not want]

tuppence spent

the trouble is the fork is not original and it is for recessed. Looks like I might have to get an odd pair of brakes to fit if I dont drill the frame, or find a nutted fork to match

alternatively i could try one of these converters from SPA , has anyone used these before?

http://www.spacycles.co.uk/products.php?plid=m2b0s100p2341

Use another front brake on the rear, then you can have a matched pair.

I'd wouldn't drill that: I'd be concerned that the bolt would rip through the weakened upper/lower part of the bridge when you braked.

#brakearedeath

Use another front brake on the rear, then you can have a matched pair.

I'd wouldn't drill that: I'd be concerned that the bolt would rip through the weakened upper/lower part of the bridge when you braked.

#brakearedeath

^ this +1, buy 2 front brakes.

Yep i think thats the answer or just use nutted. Im taking it to argos this weekend to see if they are happy to drill it, if not ill look for new brakes