Norton? gearbox identification

John This is a sturmey archer gearbox with standard ratios I would suggest about 1933/4. It is in handchange format although the outer cover is recessed for the possible addition of the bolt on footchange mechanism which is similar in appearance to the top of the dolls head gearbox. Roy

Previously john_hawden wrote:

could anyone identify this gearbox please, I was told its model 50. It looks as if it would fit into a rigid frame and is similar to an upright/dolls head box in frame lug positions.

There isnt (as far as I can tell) provision for a `self centreing` system for the gear lever as on an upright or dolls head box

on the rear of the gearbox ..cast in .. is the number. EIV 130.

stamped on is the letter E followed by the roman numerals IV.

other numbers stamped on are 10233.

there are other numbers stamped on the back which I assume are the ratio numbers:-

1.1 . 2.1 .77. 2.97

cheers

John

At first site it's a standard doll's head that's been decapitated. The gear change lever is there lower right - ready to be operated by the rod connection to the top. The gear ratios are same as MOD 16H: 1.00,1.21,1.77,2.97.

BUT the bracket at top left for the clutch cable is usually found on the doll's face. Yours has the special front cover from a hand gate change bike. Part number 3593.

Previously john_hawden wrote:

could anyone identify this gearbox please, I was told its model 50. It looks as if it would fit into a rigid frame and is similar to an upright/dolls head box in frame lug positions.

There isnt (as far as I can tell) provision for a `self centreing` system for the gear lever as on an upright or dolls head box

on the rear of the gearbox ..cast in .. is the number. EIV 130.

stamped on is the letter E followed by the roman numerals IV.

other numbers stamped on are 10233.

there are other numbers stamped on the back which I assume are the ratio numbers:-

1.1 . 2.1 .77. 2.97

cheers

John

John,

The i.d. EIV 130 signifies a pre 1932 Sturmey Archer gearbox. As yours has the plate for a handchange I would guess that it is 1929-30. The internatls are the distinguished from the post 1932 Norton-Sturmey Archer gear boxes by the codes. N8XXX for the later boxes and EIV XXX for the early boxes

Previously ian_richtsteig wrote:

Previously john_hawden wrote:

could anyone identify this gearbox please, I was told its model 50. It looks as if it would fit into a rigid frame and is similar to an upright/dolls head box in frame lug positions.

There isnt (as far as I can tell) provision for a `self centreing` system for the gear lever as on an upright or dolls head box

on the rear of the gearbox ..cast in .. is the number. EIV 130.

stamped on is the letter E followed by the roman numerals IV.

other numbers stamped on are 10233.

there are other numbers stamped on the back which I assume are the ratio numbers:-

1.1 . 2.1 .77. 2.97

cheers

John

John,

The i.d. EIV 130 signifies a pre 1932 Sturmey Archer gearbox. As yours has the plate for a handchange I would guess that it is 1929-30. The internatls are the distinguished from the post 1932 Norton-Sturmey Archer gear boxes by the codes. N8XXX for the later boxes and EIV XXX for the early boxes

John

I have to disagree with Ian Richtsteig's comments as his dates are incorrect. The Norton dolls head gearbox did not appear before the 1935 models. Prior to then the boxes used were manufactured by Sturmy Archer, who also supplied other manufacturers. The prefix E indicates it was made for Norton, IV says it is 4 speed. I stand by the comments made in my original reply. My understanding is that Norton acquired the rights to manufacture the box under their own name

Roy Cox