Correct Gearbox Cradle ?

Satan's Aardvark · Feb 16, 2022

While I've got the bike apart to replace gearbox bearings and do some engine work, I would like to upgrade to a cotter pin located swingarm spindle. Bike is a 72 750cc.

Is this the one I want?

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Norman White's book quotes a different part number, 06-4060.

Cheers

baz · Feb 16, 2022

Yes I'd say that is the one you want
But on a separate note it's really not hard to upgrade a standard one to MK3 cotter pin arrangement
Or fit the Kegler clamps etc
Or even upgrade to taper rollers although the taper rollers don't seem to be done anymore

L.A.B. · Feb 16, 2022

Satan's Aardvark said:
Is this the one I want?

Yes.

Satan's Aardvark said:
Norman White's book quotes a different part number, 06-4060.

That's the ordinary non-cottered cradle.

Motorcycle parts and spares for Norton motorbikes - Andover Norton Spare Parts - Andover Norton Motorcycles Parts - Original Andover Norton Parts

Motorcycle parts and spares for Andover Norton motorbikes: Andover Norton manufactures and supplies all Factory Spare Parts for Norton motorcycles built before 2002.

andover-norton.co.uk

kommando · Feb 16, 2022

The Kegler clamps will function just as well and be a lot cheaper. As the bike is apart it makes installing them a lot easier too.

Time Warp · Feb 16, 2022

The split collar clamps will be better than that antiquated modification from the 1970's and cost pennies compared to it.

Full circumference rings or cotter pins on one side of a thin wall tube.

Deckard · Feb 16, 2022

Just wondering. With the Kegler type clamps, will oil leak out past the bolts that secure the spindle from the clamps?
Maybe some loctite on them would help if they do leak.

baz · Feb 16, 2022

Deckard said:
Just wondering. With the Kegler type clamps, will oil leak out past the bolts that secure the spindle from the clamps?
Maybe some loctite on them would help if they do leak.

Don't drill the holes
Just tighten the centre bolt until it indents the tube

Time Warp · Feb 16, 2022

Deckard said:
Just wondering. With the Kegler type clamps, will oil leak out past the bolts that secure the spindle from the clamps?

No.
A little sealer around the holes in the cradle tube before fitting the rear clamp half would stop that even if it was possible.
If the correct 1-1/8" ID clamps are used (I made my own being cheap) any leak would more likely be out at the bronze bushes. (O-ring locations)

Satan's Aardvark · Feb 16, 2022

Kegler it is then, glad I asked, the money saved can now be diverted to another folly.

Cheers all and thanks for the responses

Correct Gearbox Cradle ?

Satan's Aardvark

Motorcycle parts and spares for Norton motorbikes - Andover Norton Spare Parts - Andover Norton Motorcycles Parts - Original Andover Norton Parts

baz

L.A.B.

Moderator

Motorcycle parts and spares for Norton motorbikes - Andover Norton Spare Parts - Andover Norton Motorcycles Parts - Original Andover Norton Parts

kommando

Time Warp

.......back to the 70's.

Deckard

baz

Time Warp

.......back to the 70's.

Satan's Aardvark

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