Other uses?
06-21-14, 08:09 PM
#1
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Other uses?
The pedal threads stripped out of the cranks on my sons bike. I guess both the pedal and crank threads were weak and now both are shot. Are there any uses for old ds crank arms? They're decent record alloy cranks and I hate to just toss em.
06-21-14, 08:25 PM
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I've seen some older campy hubs where someone flattened one side of the flange and put an angled cut through the flanges on the other side to turn them into a business card holder that looked pretty cool. Not sure if there's an analogous thing you can do with a crankset. Maybe somehow turn them into bookends after removing the rings and polishing?
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06-21-14, 08:27 PM
#3
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You can have a threaded insert installed and reuse them.
06-21-14, 09:03 PM
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Is that a DIY or an lbs job?
06-21-14, 09:49 PM
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diy for sure. If you can find the Kit.
06-21-14, 10:49 PM
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i bought a drive-side campy gs crank arm for its rings, and now it's hanging on the kitchen wall. it looks great, and is a nice conversation piece.
it can also serve as a mace-like weapon, an eggbeater, or maybe a terribly performing spatula.
it can also serve as a mace-like weapon, an eggbeater, or maybe a terribly performing spatula.
06-21-14, 11:13 PM
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06-22-14, 04:35 AM
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If the average guy at the bike shop can properly do a Helicoil, I'd be surprised. Ask around if they have any experience.
06-22-14, 07:53 AM
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06-22-14, 12:43 PM
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Wouldn't one of those make a heck of a weapon?
I could see slicing through a zombie horde with a crank arm attached to some razor sharp chainrings...
I could see slicing through a zombie horde with a crank arm attached to some razor sharp chainrings...
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06-22-14, 03:17 PM
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[QUOTE=WNG;16872998]Like mine? 
Ha ha. Something like that. Ok. Exactly like that.
Ha ha. Something like that. Ok. Exactly like that.
06-22-14, 03:59 PM
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06-23-14, 04:31 AM
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this is what happened to me today: stripped threads on a beautiful, shiny campy nr 3-hole fd cable anchor arm. it made me sad. i got another on ebay afterwards for $20. so it goes.
but here's a post-purchase dilemma: should i spend another $15 to fix the stripped derailleur using loctite form-a-thread? i just read about it. it sets up in minutes, and is supposed to be strong enough for this type application. what i really want to know is: can loctite form-a-thread be used multiple times after months of storage of unused product? for me, it would make sense if i could use it again and again.
and i wonder if it would be strong enough for crank threads.
but here's a post-purchase dilemma: should i spend another $15 to fix the stripped derailleur using loctite form-a-thread? i just read about it. it sets up in minutes, and is supposed to be strong enough for this type application. what i really want to know is: can loctite form-a-thread be used multiple times after months of storage of unused product? for me, it would make sense if i could use it again and again.
and i wonder if it would be strong enough for crank threads.
06-23-14, 05:12 AM
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LoctiteŽ Form-A- ThreadŽ Stripped Thread Repair - Henkel
says it allows for up to 128 ft/lbs of torque. but i have little frame of reference for this.
says it allows for up to 128 ft/lbs of torque. but i have little frame of reference for this.
06-23-14, 05:22 AM
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128 lbs-ft of torque is more than a car wheel nut should be be tightened to. Typically around 100 lbs-ft. Of course this is steel on steel not like many bike parts which are often steel on aluminium. should work fine base on this spec.
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