Iâ??m sitting on the #2 bench (kinda like the group w bench?) and have been
since the late 70â??s. Never had one fail yet. The only cotters Iâ??ve ever
seen fail are ones which have been re-used, and thatâ??s just being cheap for
the sake of being cheap, in my view of things...
â??
Tom Coradeschi
tjcora@icloud.com
> On 17 Nov 2020, at 12:36 PM, Bob Spidell <bspidell@comcast.net> wrote:
>
> Got some 'quiet time' before I have to go look after my mom, and I thought
> I'd pose an arcane question to the List:
>
> What do y'all consider the proper way to use a cotter key/pin? I've watched
> the pros on TV--Edd China, Ant Anstead, Goblin Garage, Fantomworks, etc. and
> the 'Chop it/Channel It/Drop a Crate Engine In It/Bag It/Put Huge Dubs and a
> Gaudy Paint Job On It and Call It a Day' hotrod builders, and they all do it
> a bit different. Usually, it's 'Type 1'--see terrible hand-drawn 'art'
> attached (using a stub axle for example)--but I gave it a lot of thought and
> wondered 'Is that the best way?' Thinking it through, yes, any way you put a
> cotter in and secure it will do the job; i.e. keep the nut from coming
> completely undone. However, when safety-wiring--a skill I sorta learned
> maintaining my own aircraft--you're supposed to always wire so as to pull in
> the tightening direction, to resist any turning at all of the nut/bolt. So,
> when applicable--e.g. on castellated nuts--I torque until the cotter will
> just fit in the hole (drawing# 2), situated 'sideways'--where you can't see
> the eye of the cotter from the side--snug against the side of the nut's slot
> so as to resist the nut turning at all. Then, I bend the upper half of the
> cotter back over the nut/spindle, and snip the lower half at the edge of the
> nut, figuring anything longer than that isn't doing anything (plus it just
> looks neater IMO, and may be easier to remove if necessary).
>
> FWIW, my late father, who was an auto shop teacher and had a few psychology
> classes under his belt said I was 'stuck at the anal retentive stage' of
> child development; I (think) he was kidding.
>
> Bob
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