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nut lock on crank pin, pinion ,sprocket shaft

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Bent Valve

Posts: 2

Joined: Sat Feb 04, 2012 9:52 am

Post Tue Feb 07, 2012 4:42 pm

nut lock on crank pin, pinion ,sprocket shaft

hi, im a newbie here.
I would like to hear your opinions on those nut lock retainers on flywheels..
I think loctite with proper torque, on clean threads and surface would be sufficient..
but what you think? i have seen a tiny screw and retainer were tumbling in breather bore before,, but flywheels were tight..that made me not want to install those retainers..
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Frankenstein

User avatar

Posts: 1560

Joined: Thu Jun 27, 2002 12:01 am

Location: Interlaken, NY USA

Post Wed Feb 08, 2012 6:52 am

Re: nut lock on crank pin, pinion ,sprocket shaft

Bent Valve, I'm with you. I also have found retainers wadded up in breathers. I have come up with a compromise. I use the retainers on BTSV mainshafts, smaller nuts, less centrifugal force applied to retainers, and just locktite to crankpin nuts. However, these are T&O flywheels with the larger crankpin/nuts.
Your call,
DD
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Pa

Site Admin

Posts: 4754

Joined: Sun Mar 12, 2000 1:01 am

Location: Ohio USA

Post Wed Feb 08, 2012 7:46 am

Re: nut lock on crank pin, pinion ,sprocket shaft

Use the locktite on the lock washer screws.
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Beachdog

Posts: 766

Joined: Mon Oct 16, 2000 12:01 am

Location: CA USA

Post Wed Feb 08, 2012 9:48 am

Re: nut lock on crank pin, pinion ,sprocket shaft

I've been using blue locknut on the retainer screws for 40 years. I clean the threads in the flywheel first with carb gum cutter, blow dry, apply locknut, assemble and wipe up any excess. No failures yet.
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Bent Valve

Posts: 2

Joined: Sat Feb 04, 2012 9:52 am

Post Wed Feb 08, 2012 11:05 am

Re: nut lock on crank pin, pinion ,sprocket shaft

thanks guys,

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