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Cotter pin definitions - Howard Wright - 06-09-2024
Hi All
On another thread there is mention of the cotter pin that holds the kingpin tight in the axle eye. It is contrasted to the cotter pin that ‘say’ secures the crank on a bicycle.
Is there a correct definition for the two types? Half moon and wedge have been used. Austin refers to both as cotters. A Google search provides no answers.
Cheers
Howard
RE: Cotter pin definitions - AustinWood - 06-09-2024
This is the half moon cotter.
https://www.theaustinsevenworkshop.com/products/fa0291-king-pin-cotter-nut
This is the wedge
https://www.theaustinsevenworkshop.com/products/fa0295-trackrod-cotter-nut
From the Seven Workshop catalogue.
RE: Cotter pin definitions - Ruairidh Dunford - 06-09-2024
Half moon and wedge is correct.
Other names will exist.
RE: Cotter pin definitions - Bob Olive - 07-09-2024
Is not a 'split pin' also technically called a 'cotter pin?'
RE: Cotter pin definitions - Chris KC - 07-09-2024
(07-09-2024, 09:48 AM)Bob Olive Wrote: Is not a 'split pin' also technically called a 'cotter pin?'
Yes, (- a "split cotter" pin)
RE: Cotter pin definitions - Turboseven412 - 07-09-2024
I think 'cotter' can refer to a variety of locking devices. I work on rail wagons and we have cotters that are a roughly 4 x 2" rectangular plate passed through a slot. Bit off subject but there you are
RE: Cotter pin definitions - David Stepney - 07-09-2024
My dictionary defines a cotter as a pin or wedge passing through a hole to bind parts tightly together. That definition appears to cover a multitude of fixing devices.
It appears, however, that the Americans use the term to mean a split pin. I am reminded of the 'bon mot' attributed to the late Sir Winston Churchill describing the English and Americans as " two nations divided by a common language"
RE: Cotter pin definitions - Lowespeed - 07-09-2024
I've always called the brake pin type "taper cotters"