War Department 16” divided rim: British and Canadian manufacture

[Mike Cecil]

Interesting distinctions. The War Office 1966 driver training manual distinguishes the two types as 'divided type wheel' and 'three piece wide base rim' in the diagrams, then has an each way bet in the text: 'such wheels split into two or three parts to allow for replacement of tyre or tube'.

Looking more closely at the CMP manuals and parts lists, the Ford MBF1 uses the term split rim with the drawing of the wheel, but not in the text, and in both the Chev and Ford parts lists, the wheels are described as 'split' for the various sizes.

But neither the Chev MBC1 or C2 maintenance manuals use the term. All these manuals (MBF1 and MBC1&2) describe the wheel rims in the text as two piece.

Clear as mud, eh?

Mike

[Lynn Eades]

For those that don't recognise it, the diagram in Hanno's post#13 is of a WC Dodge rim (3/4 and 1 1/2 ton)

[David Herbert]

It seems strange that in Richard's post LV6/MT14 description that the PCD of the wheel stud holes is given in mm (and doesn't represent a sensible inch size) when everything those wheels fit were designed in inches.

David

[Richard Farrant]

Originally Posted by David Herbert

It seems strange that in Richard's post LV6/MT14 description that the PCD of the wheel stud holes is given in mm (and doesn't represent a sensible inch size) when everything those wheels fit were designed in inches.

Hi David,
I agree that is strange as the Vocab is dated 1951. Looking at the book again it appears that only the 8 and 10 stud wheels have PCD in mm. Maybe this was a standard stud pattern used pre-war by overseas manufacturers?
Something else to investigate! I know some foreign vehicles went through WD trials in the 1930's, maybe this is something picked up from their evaluations.

regards, Richard

[Tony Smith]

Originally Posted by Richard Farrant

I agree that is strange as the Vocab is dated 1951. Looking at the book again it appears that only the 8 and 10 stud wheels have PCD in mm. Maybe this was a standard stud pattern used pre-war by overseas manufacturers?
Something else to investigate! I know some foreign vehicles went through WD trials in the 1930's, maybe this is something picked up from their evaluations.

Note that the 275mm PCD is incorrect.

For anyone considering replacement rims, the Wheel Stud PCD is 8 on 10 1/2", or 266.7mm.

[Richard Farrant]

Originally Posted by Tony Smith

Note that the 275mm PCD is incorrect.

For anyone considering replacement rims, the Wheel Stud PCD is 8 on 10 1/2", or 266.7mm.

Tony,
I can only quote what the War Office parts catalogue says and I looked at all the divided rims for 8 stud fixing on both 16 and 20 inch wheels and it states 275mm on all of them. It is not so much the diameter that is of interest, it is why it was measured in metric at that period of time.

[Tony Smith]

Originally Posted by Richard Farrant

It is not so much the diameter that is of interest, it is why it was measured in metric at that period of time.

Well, the actual PCD is important if you are having rims made (as has been done by some on this forum), but I do note that Heavy Bedford trucks of the 50's and 60's are also noted as having "8 on 275mm" wheels (actual 10 1/2"), and this is known as the "Bedford (DIN)" bolt pattern.

But the actual figure is still of interest, as it might have been more accurately rounded to either 265mm or 270mm.