Any tips for removing a sheared bolt?

[Glow worm]

My kickstand snapped yesterday and I have ordered the replacement, however upon removing the old, broken stand, both bolts sheared in their holes and are now stack fast and I'm unable to remove them. I have tried gentle tapping, a lot of swearing and WD40 all to no avail - I wondered if anyone has had similar and managed to sort it.

 

[HovR]

Is it one of the kick stands that uses a bolt to clamp two metal plates over the chain stays at their narrowest point? If so, you could always drill the sheared bolts off.

 

[Glow worm]

It's one of these so no plates.You just bolt the thing straight into the chainstay. I wondered about drilling out the bolts but that means wrecking the thread.

 

[Red Light]

Get yourself a set of screw extractors. Always useful and gets them out in a jiffy.

 

[Glow worm]

Get yourself a set of screw extractors. Always useful and gets them out in a jiffy.

Ordered- thanks for the tip. Slightly more expensive than swearing, but probably more effective!

 

[sidevalve]

Will you not still have to drill into the bolts to get the extractor in ?
Be carefull not to break off the extractor, they are [or should be ] hardened steel and then you'll REALLY have a problem.

 

[Red Light]

Will you not still have to drill into the bolts to get the extractor in ?
Be carefull not to break off the extractor, they are [or should be ] hardened steel and then you'll REALLY have a problem.

Yes you do but with a drill much smaller than the bolt diameter which is very different from trying to drill the bolt itself out.

 

[mickle]

When you say 'both bolts' .... Aren't them there kick stands attached with just one large bolt? (8mm allen or 13/14mm hex). And why the hell are you shearing bolts?? Bolts shouldn't fail. If, for example, the bolts have corroded in place through lack of grease and/or exposure to salt - and the head sheared off as a result - no amount of huffing and puffing with an extractor will remove them. You'll have to drill them out. Not an easy task.

What's your frame made of?

 

[Glow worm]

It's a steel frame and this stand sits at the 'back' of the frame close to where the cassette is although on the other side and two bolts into the frame secure it. Not sure why they sheared, I guess thyd been there for years and like their owner, gotten rather old and knackered!

 

[RecordAceFromNew]

My kickstand snapped yesterday and I have ordered the replacement, however upon removing the old, broken stand, both bolts sheared in their holes and are now stack fast and I'm unable to remove them. I have tried gentle tapping, a lot of swearing and WD40 all to no avail - I wondered if anyone has had similar and managed to sort it.

AFAIK the type of kickstand you are talking about bolts onto a mounting bracket brazed onto the chainstay like pic below? Presumably since the bolt heads have sheared the kickstand is now off? If not I would destroy kickstand to expose as much broken bolts stuck to the mounting bracket as possible, then I would soak threads with penetrating oil for a day or two, file flat surfaces above and below exposed bolts to give a pair of pliers purchase to loosen bolts.

That is assuming the bolts did not shear at/inside the mounting bracket.

 

[mickle]

Do you know what?

Warranty!

 

[Glow worm]

AFAIK the type of kickstand you are talking about bolts onto a mounting bracket brazed onto the chainstay like pic below? Presumably since the bolt heads have sheared the kickstand is now off? If not I would destroy kickstand to expose as much broken bolts stuck to the mounting bracket as possible, then I would soak threads with penetrating oil for a day or two, file flat surfaces above and below exposed bolts to give a pair of pliers purchase to loosen bolts.

That is assuming the bolts did not shear at/inside the mounting bracket.

Yep that's similar to my stand. The kickstand is off (it had snapped in two). Will give the oil thing a try combined with the screw extractors. I'm bound to cock it up that's for sure!