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Old 07-04-2013, 07:31 PM   #1
indr OP
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Joined: Feb 2010
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Spring bolt broken in clutch basket

Here is what happened:

1) I was tightening the bolt and the head tore off (This happened as I was thinking to myself "I'm so much better than those guys that need a torque wrench." I even thought about starting a thread here to tell people my glorious ways.)

2) I thought about going at it with a left hand drill bit.

3) It was very hard to drill a pilot hole right in the centre (because of the way the bolt broke off). So, the hole ended up being off centre.

4) I keep going anyway. I go at it with a left hand drill bit and it ends up not grabbing the bolt but drilling a somewhat smooth hole inside it.

5) There was still SOME grab (not enough to turn the bolt). So, I pack the spirals of the left hand bit with JB Weld and stick it in the hole inside the bolt. Let it dry.

6) 24 hours later, I got at it. And I end up breaking the drill bit inside the broken bolt.

7) I drill bit got stuck inside.

5) What I have is a bolt that's stuck, with a broken drill bit that's stuck inside it, with some dried up JB Weld that isn't helping either.

This is what it looks like:





The clutch DOES NOT work well with only three spring bolts in place. I tried.

While I look for clutch baskets on eBay, feel free to laugh and maybe give some advice about what I can do without having to buy a new basket.
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Old 07-04-2013, 07:48 PM   #2
concours
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Take the basket off, put it on a milling machine, plunge a carbide end mill. Restore threads as needed, M6 usually.
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Old 07-05-2013, 12:21 PM   #3
ttpete
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The problem is that unless you know someone with a milling machine who is knowledgeable enough to do it properly, it'll be cheaper to just buy a new basket. Commercial shop time is expensive.
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Old 07-05-2013, 01:23 PM   #4
lnewqban
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Quote:
Originally Posted by indr View Post
...........While I look for clutch baskets on eBay, feel free to laugh and maybe give some advice about what I can do without having to buy a new basket.
Look for a new central nut as well.

Any good welder close by?
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Old 07-05-2013, 03:19 PM   #5
joexr
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Quote:
Originally Posted by lnewqban View Post
Any good welder close by?
He needs a good MECHANIC close by too. STEP AWAY FROM THE MOTORCYCLE.
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Old 07-05-2013, 05:13 PM   #6
indr OP
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Thumb

I don't trust mechanics…

Went to a machine shop. They bored out the hole and helicoiled it. ~$70. eBay would be ~$50 and take two weeks.

All fixed now.
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Old 07-05-2013, 05:52 PM   #7
WayneJ
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Quote:
Originally Posted by indr View Post
All fixed now.
Do you own a torque wrench now?
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Old 07-05-2013, 06:11 PM   #8
red rider 391
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broke bolt

Try this ,It worked for me . Get a drill bit just a little smaller then the bolt . If you can start it real slow ,just push hard enough to get the Bolt it self to turn ,,Thats right ,turn in and all the way to the other side ,where you should be able to get a grip on the treads with some pliers and just unscrew it from the back ! worked for me ,try it ! Just try to spin it all the way in !,til you can get a grip on it !Those threads are not hurt !If it was going in really easy ,you can do this !
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