2009 at the Hammond Barn

RHClarke · #1 22-09-09, 17:36

Quote:

Originally Posted by Bob Carriere

Was that rim from the prototype......?Will need to insert that half rim into the sandblasting cabinet and see if the fine medium can clean the stamping with out damaging the inscription.... then photograph for safe keeping. Just wondering..... what are the chances the bolt stud arrangement was done by GM during the protopype phase....? Is that the only rim like that? Are the bolt threads standard size or British Withworth (spelling ?) odd size. It may be worth cleaning up and saving along with the other one stamped KH 1941 maybe a very early rare 6 bolt KH wheel.
Bob C.

Bob, This was the "spare" I got from Brian Gough with the Prototype. It was not on the truck. As for the thread size - beats me. You may have to get out the thread guages to determine the thread size.

I will sandblast the rim the next time I am out at the barn, and will also photograph the results.

So, what the hell is a KH wheel??

Grant Bowker · #2 22-09-09, 17:58

Quote:

Originally Posted by RHClarke

Bob, This was the "spare" I got from Brian Gough with the Prototype. It was not on the truck. As for the thread size - beats me. You may have to get out the thread guages to determine the thread size.

I will sandblast the rim the next time I am out at the barn, and will also photograph the results.

So, what the hell is a KH wheel??

I admit, my first thought when seeing the bolts was that someone had broken or damaged a couple of adjacent studs and taken the lot out and replaced them with SAE thread bolts (this only really makes sense if the HUP series used the same Whitworth fine thread wheel half joining studs as 15 cwt (and 30 cwt?), 60 cwt are mushroom headed instead of flat headed).

KH = Kelsey-Hayes, maker of wheels and possibly other chassis parts.

Brian Gough · #3 22-09-09, 17:59

Hi Rob,

I think "KH" stands for Kelsey Hayes.

Cheers from the sunny and warm East Coast.

Brian

Greg · #4 23-09-09, 02:53

Hi Rob,

If you are out my way, I have some 16" truck tires that you guys can have for yard tires, I think there may be some tubes as well.
I also have the instrument cluster for Bob as well.

Cheers,
Greg

RHClarke · #5 23-09-09, 03:31

Quote:

Originally Posted by Greg

Hi Rob, If you are out my way, I have some 16" truck tires that you guys can have for yard tires, I think there may be some tubes as well. I also have the instrument cluster for Bob as well. Cheers, Greg

Hi Greg, Thanks for the offer. We plan to visit your neck of the woods when the ground at the S&P Museum can support truck traffic. I intend to move my C15 Dump Truck (which is for sale) to Bob's barn. If it does not sell, it will be stripped down for parts.

We will give plenty of notice of the visit so that we can figure where to deposit your engine which I hope is still in the back of the dump. As well, we are on the scrounge for cleaning rags, cover alls etc...

Guy Vapeur is looking for some good modern modular tent centers. He peeks in on this forum every so often and he may PM you with details.

Regards to the family and neighbours! Rob

PS - I updated the first post in this thread...call it a late summer sitrep.

Bob Carriere · #6 23-09-09, 03:53

.....hoping to see you soon.

Bob

Bob Carriere · #7 23-09-09, 04:07

Looking at the RF stamping and playing with contrast adjustment I would say the DUNLOP 0 stands for 0 degrees as opposed to the otherstyle rims which is listed as 5 degrees......... and the flat 0 degree rims is what you have on the HUP.

Comments anyone...?

Boob

RHClarke · #8 23-09-09, 04:27

Quote:

Originally Posted by Bob Carriere

Looking at the RF stamping and playing with contrast adjustment I would say the DUNLOP 0 stands for 0 degrees as opposed to the otherstyle rims which is listed as 5 degrees......... and the flat 0 degree rims is what you have on the HUP. Comments anyone...?
Boob

Maybe the RF stands for "Real Fast"...

Grant Bowker · #9 23-09-09, 04:41

The design record lists two types of 16" rim. One is listed for 9.25x16 (HUP)tires, the other for 9.00x16 and 10.50x16.
Both are DND designs (not K-H), and are listed as having 6 inch width and 10.827 inch mounting bolt circle. (They could be K-H made and DND designed)
The one for 9.25x16 tires weighs 46 pounds per wheel, has a 5 degree rim taper, 1-1/8 inch flange height and 0.5625 inch centerline offset.
The other type for all other CMPs weighs 67 pounds per wheel, has a 1-1/2 degree rim taper, 1-1/2 inch flange height and 0.250 inch centerline offset.
The weight difference seems to be mainly because the HUP rims are made from thinner stock. It is probably possible to mix HUP and "other" CMP wheel halves and have a driveable wheel, but due to the different geometyr of the rim and the different offset I don't hink I want to make the experiment to prove it works or otherwise. My first explanation for the different offset was that the tires were the early equivalent of "wide profile", then i thought again (10.5 is wider than 9.25) (even stranger, the 9.00 cross-country tires had a wider section than the 9.25 ones - I don't understand).

Comments on Bob's theory - anything could be possible on a one-off prototype basis, but would they create a die to mark a one-off rim? Most HUP rims are 5 degree taper, not 0, that's why I think their tires are less evil to remove from the rim.
The only rims listed as Dunlop designed (as opposed to manufactured) are in the 5.00x18 size for 7.00x18 tires which had comparatively narrow .75 inch flange width, 3 degree rim taper and a bolt circle different than all CMPs but closest to the C8's rims for the 9x13 tire.