Broken Brake post/pivot. Indian GP

[bike grim]

Just about to put the rear hub on this motor to put in a project scoot I'm messing with ( just to get it on wheels for moving it around ) and noticed one of the the brake shoes was loose. Closer inspection reveals the brake post has sheared. Never seen this before and don't know how it has happened.

Thinking the only way to get it out was stud extractor bit but no joy. I have tried a variety of drills but they are not touching it. I presume it's made out of pretty hard steel. Has anyone had to do this before and if so how? Don't really want to strip it as its already had a overhaul with a freshly rebored top end.

[Wack]

I've had to remove one before but I drilled it out, and I've drilled and tapped them when used on rear set brake pedals so maybe your bits are blunt? You could try heating the casing and trying to tap it round with a pointed punch to loosen it but I would guess it's bottomed out in the hole so will be tight .There should be wavy washers fitted under the pivots.

[bike grim]

Wack, Thanks for the advice. I tried tapping it round with a drift (albeit without heat) at first but as you point out its probably bottomed out as it not for moving. I was using new drill bits but I'll give it another go now I know they are capable of being drilled. Fingers crossed.

Cheers

Gareth

[bazza3004]

Try a carbide drill bit if you dont have any joy with hss bit

[AJC]

cut a slot in it, it'll come out with a screwdriver !

[MickYork]

Cobalt drill bit....not cheap but the they're the best for anything like this.

[johnnyXS]

just drill very very slowly like 3-5 rpm . if you drill any faster the tip of the drill gets hot and blunts
Start with a centred pilot drill of 1/8" or less and build up from that

[bike grim]

Thanks for replies. I will have another go tonight.

[paul213]

if you want to drill it on the cheap a masonry bit that is not suitable for hammer action can be used (these are ground with a cutting edge ) drill at a slowish speed with plenty of oil to cool the tip . I have used this method on some stainless stands that are just to hard for hss.