B s p

[Richard Farrant]

Originally Posted by Stew Robertson

I think you guys are barking up the wrong tree HOWL

Remember guys there was not a lot of metric going on in Canada during the war years

Sorry Stew, but it might be you barking up the wrong tree. Michael copied from the Canadian Carrier parts book that the spindle was 7/8" BSP. Remember the Carrier was a British design and build and Canada supplemented production, British Standard thread forms were used for interchangability which all made sense. Some of the early Canadian built Carrier had British components fitted.

As for metric, you may be surprised to know that metric sized bearings were used by Ford in the gearboxes.

regards Richard

[Stew Robertson]

Give me a little while to take some pages out of the machinists hand book
This has been my bible for the last fifty plus years

[Michael R.]

According to the Ford-Windsor parts manual, - - - - - (Canadian carrier parts bible ) - - - - - the 7/8 x 14 BSPP for the spindles is not the only BSPP thread used on the carrier.
The other (that I am aware of) is where one would expect to see it, on the oil cooler.

If this BSP discussion turns out to correctly be BSP, will I get a free lunch to replace the wager I lost over my opinion on the production technique used for the long shaft of the starter crank?
Is the major centre portion of the starter crank handle hollow or solid? 9/15: (edit:main shaft, not crank handle)
I came in second.

[Lynn Eades]

Michael, why should you doubt that it's BSP?
If your ever over my way, I'll buy you a pie

[Lynn Eades]

Michael, why should you doubt that it's BSP?
If your ever over my way, I'll buy you a pie

Crank handles:
I supect the early one piece ones were solid (smaller dia.)
The Canadian ones would be hollow. The splined bit is welded on. With the bigger dia., they would be very heavy other wise.

[motto]

For some strange reason spark plugs have been standardised in metric, 10, 14, 18 and 22 mm that I'm aware of.
22 mm is close to 7/8" dia.
I believe that in earlier days some were BSP.

David

[Stew Robertson]

here is a quote from the machinist handbook
My question is why would you a loose fitting thread or a free fitting thread to fasten an axle in . yes you guys are talking the same threads but not machine cut threads where they are designed to hold a load for a to attach a wheel where they can be torqued to the right spec.
this is a IMG_00000274.jpg
PS I think you owe me lunch again

[Richard Farrant]

Originally Posted by Stew Robertson

here is a quote from the machinist handbook
My question is why would you a loose fitting thread or a free fitting thread to fasten an axle in . yes you guys are talking the same threads but not machine cut threads where they are designed to hold a load for a to attach a wheel where they can be torqued to the right spec.

PS I think you owe me lunch again

Your book is referring to American National Pipe threads, we are talking British Standard. Proof is shown in the original parts book that it is BSP. If a male and female thread are cut to the correct tolerances, there is no reason for them to be "loose fitting", that was referring to pipe nuts, this is a pipe thread form used elsewhere. In my work experience I have also come across BSP used in other roles, not pipe.

You might have to go hungry, no lunch yet