width of bottom lug on tombstone gearbox?

pbu 232 · Jul 4, 2019

Does anyone know what is/was the correct width for the 'tombstone ' gearbox bottom lug? Thanks, pbu 232

Bernhard · Jul 5, 2019

Well, there’s Norton Dolls Head, plunger international gearbox and Featherbed Gearbox.

Never heard of 'tombstone ' gearbox –which one do you mean?

triumph2 · Jul 5, 2019

Sturmey-Archer, Dolls head, tombstone and AMC boxes. Sorry I can't help with a dimension. I would think they would all be similar but with British engineering of the day you could never be sure.

pbu 232 · Jul 6, 2019

actually it is a plunger international, but should be the same as late 40's ES2, if that is of any help

dynodave · Jul 6, 2019

1949-56 garden gate/plunger model 7 with laydown "norton" gear box is 3.46" bottom lug and 3.3" top lug.
Same as big single engine plate spacing ? I would initially guess they are the same, but I have NO expertise with singles.
Believe dolls head shifter is same "norton" gearbox as laydown shifter, again I have NO experience with singles.

pbu 232 · Jul 10, 2019

dynodave said:
1949-56 garden gate/plunger model 7 with laydown "norton" gear box is 3.46" bottom lug and 3.3" top lug.
Same as big single engine plate spacing ? I would initially guess they are the same, but I have NO expertise with singles.
Believe dolls head shifter is same "norton" gearbox as laydown shifter, again I have NO experience with singles.

Thanks mate, I'll check it later, the frame is worn also, so it's a drama. BG (pbu 232)

width of bottom lug on tombstone gearbox?

pbu 232

Bernhard

triumph2

pbu 232

dynodave

pbu 232

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