Info Need re 20" CMP Rims

[Comox Air Force Museum]

The lever closest to the seat is the emergency brake lever, that why it has release handle.
Most of the emergency brake is missing though, but an M135 drum and band will fit right on, for that application.
For the transfer shift tower on that truck, the lever would be to the left and back to disengage the front axle.
To the left and forward to engage the the front axle.
Lever across the front to the right and back takes it from high to low range.
Our truck has the winch so it's to the right half way back then to the right again and the all the back to engage the winch.
Normal driving position is to the left and back for two wheel drive.
Hope this makes sense.
Cheers Rob

[JoãoBoscoBarbosa]

Bod,

Thanks.

The old owner disassemble the truck, then I think a same pieces is not more, but is 95% complete.

The fourth lever, I think, used to the Brake action but is incomplete.

The Motor: is disassembled and need restauration, but in Brasil have a lot this 216" motor, no problem.

At present I paint the truck of Brown, after I send new pictures.

I first restauration the body and after I restaure the mechanical.

[Bob Carriere]

How does the front axle gets engaged for 4 wheel driving??

[JoãoBoscoBarbosa]

Rob,
Yes I think you is correct, the The fourth lever strange is for the emergency brake and other lever is change the two velocity transfer case and change the traction 4 x 4 and 4x2.

Bod I think the Rod is correct, because I see this in C-60 pictures.

Thanks for all answer my question and help me in restauration of the C-15A.

[Corey Myronuk]

I have some 20" wheels off with no tires..what dimensions are you looking for?

Corey

[Phil Waterman]

Hi Corey

As you have read in this thread the person we are trying to help is Joao, from Brazil.

Attached is the drawing he sent me showing what measurements he is looking for to see if he can have the wheels made locally.

Cheers Phil

PS- This is the first time I've tried posting a PDF so we will see how it works.

[JoãoBoscoBarbosa]

Hi Corey,

You have the two wheel 20" for sale? See the pictures my wheel.

[Bob Carriere]

Hi Phil / Joao

Those wheels were stamped in a huge press at GM ...later Kelsey Hayes.....

The press was over 3 story tall and...correct me if I am wrong.... hit a flat disc with 1200 tons....... the flywheel of the press reached below the floor into the basement.

There was a picture of that press in a GM publication and I beleive a copy of it was on MLU.... but as usual I can't find it.

So with all due respect two wheels shipped by air express from British Columbia would be cheaper than trying to replicate these wheel today.

The CMP wheels/rims are approx. 1/4 inch thick and on the later British armored vehicles .... ie Saladin, closer to 3/8 inch....... now that take some pounding.

Added info..... I have found a picture of a wheel stamping press in a GM publication....but my scanner is acting up... in any event the press is only the height of 3 men adn I believe they are stamping civilian wheel and not CMP .... in any event it is not the one I was referring to... still digging.

Cheers

Bob C

[JoãoBoscoBarbosa]

Rob.

Thanks, I need buy the wheel for my C-15A then I need know if this truck 20" use in my C-15A?

If yes I need buy only other two wheel but If not use in C-15A I need buy four wheel?

Can you help me answer this question?

[cletrac (RIP)]

It's simple. The C15A never used 20" wheels in military service. They were added by farmers and the like after the war.

[JoãoBoscoBarbosa]

Bod,


I confirm in the shop manual (MBC1) this information, then I need buy four 16" wheel! you have this wheel for sale?

In my country, CMP is very rare and I have a difficult buy the parts then I need obtain this parts in other countries, can you help me?

[Bob Carriere]

I suggest we carry on off the forum as it will take time and money will be involved.

Bob C

One suggestion ....... get yourself a digital camera to document everything you take apart and to share pictures on MLU when asking for questions....... and take lots and lots and lots of pictures for future reference.



PS....... the final outcome of these potential transactions will be posted on MLU.

[Bob Carriere]

Has JoaoBosco been through your excellent web site for edification purposes.

I need to make sure he knows what he is getting into....... and capable of doing.

I will continue off site so I can share some of the thousand of pictures with him directly from home.

Thanks

[JoãoBoscoBarbosa]

Bod Carriere.

I stay here wait a new pictures and information in my mail, thanks.

Other question, I and Phil conversation about motors 216" color, gray or black? All chevrolet made USA is gray but Phil's CMP is black. What You Know about this?

[Bob Carriere]

Bonjour Joao Bosco

Hang in there ........ may have some wheels for you. Details to follow.

Color of the engine is the subject of long inconclusive discussion.
Officially General Motors never kept detailed information on the exact paint formulation for the engine color...... so grey.....blue gray....some on black and military rebuilt engines were sometimes painted Olive drab green........ personally I prefer the blueish grey color that contrast well with the other black generators, fans, starter, etc accessories.

In the end it is for YOUR truck and what you decide will be perfect.

Patience my friend.

Bob C

[JoãoBoscoBarbosa]

Bod,

I send a mail for you by comercial@towertelecom.com.br, you receive.

[Bob Carriere]

Did you read the email I sent you by PM..... private mail on MLU.

will send you another one with my home email address.

Bob

[Corey Myronuk]

Sorry for the response delay, im on the road out in Alberta at the moment..ill be back in the shop by wednesday and will do my best to take the measurements in the pdf.At the moment my wheels are in use but I recently came into a pair of axles I think may be from a lynx but am not certain.they are a GM style axle front and rear chunk offset to the passenger side with cmp hubs and 20" combat wheels, but the steering is set up for the left side of the vehicle as seen from inside the passenger compartment facing the windshield.They are destined for another project and when I am sucessful in fitting an adapter to standard 10 on 11.25 pattern wheels there will be 4 combat wheels available. There is a local company called Vanguard steel that has large round bar stock in steel.i've used them for stock for flywheels and no doubt you could cnc some wheels from a billet cheaper than making a die for the rquired megaton press..just a thought.

ill put up the dimensions asap.
cheers
Corey

[Corey Myronuk]

here are the measurements as best i could get them.The bends have a radius to them and so i tried to measure to where the radius started or stopped as per the pdf file.also the front and rear wheel sections fit together full width as a kind of mirror image,so i snapped some extra pics to give you the idea of whats going on there.

Hope this helps

Cheers
Corey

[Phil Waterman]

Hi Corey

Thanks for your efforts in measuring the rim, the measurements help Joao from Brazil who the measurement question was originally posed.

The information though are also a good addition to the general CMP knowledge base.

I've saved off a copy of your measurements to my CMP information photo file.

Cheers Phil

[Corey Myronuk]

its too bad they did what they did with the dish in the centre..if they had kept it flat a person could put together two rear halves and have a wheel fit for a decently wide tire.

[Bob Carriere]

They are flat....... but you need to remove the studs on one half and INSURE the rims are perfectly aligned when you redrill new holes.

Cheers

[JoãoBoscoBarbosa]

Corey,

thanks for your help,

but I need a new information.
- how many the thickness the sheet?
- how many the diameter the bolts?

With this information I have reproduction this wheel in Brasil, thanks.

[JoãoBoscoBarbosa]

Hi, friends.

I send new pictures about my CMP.

Write about the restauration.

[Corey Myronuk]

Hi Joao...the studs that hold the wheel halves together are 7/8" BSF (british standard fine thread)..they used bsf thread because it has better torque retention under high vibration conditions without the use of a lock washer.the nuts have a 45° chamfer like a regular wheel stud. wheel thickness i cant remember off the top of my head..im at the airport seeing my girl and son off on their way back to alberta..ill check the thickness for you whrn i get back to the shop.

[JoãoBoscoBarbosa]

I have interest in 20" wheel, how many for 4 wheels?

[JoãoBoscoBarbosa]

Hi Bob,

How are you?

I write for you but you not answer!

[Bob Carriere]

Fallen behind in my emails but I did get it and the cargo box you built is super nice.

Will get back to you directly.

Cheers

[BCA]

Joao: Maybe you should get a grip on reality and accept that it is not practical to ship 20" CMP wheels from Canada to Brazil unless you have a very special shipping arrangement. I'm sure Bob will respond when he has a chance.
At your request, I have sent you 2 two quotes in the last year and you never even sent an acknowledgement of receipt; and these were for 1 kg items!
How can you expect instant service when the deal involves over a 100kg purchase? ............ Brian

[Hanno Spoelstra]

Gents,

I moved some of your postings from CMP trucks & parts for sale to here, as to not clutter up that thread.

Regards
Hanno
MLU Administrator