quiz time!

[Hanno Spoelstra]

Let's start a CMP quiz. Here are two questions I would like to enter:

1) Why were the windows of the nr. 13 cab slanted inwards?

2) Why is the wheelbase of Ford CMP trucks 1/4" longer than the equivalent Chevrolet trucks?

Who knows the answer to any of the above questions? (Please provide evidence.)

Who has another question to add?

Please proceed!

Hanno

Originally posted by Hanno Spoelstra
Let's start a CMP quiz. Here are two questions I would like to enter:

1) Why were the windows of the nr. 13 cab slanted inwards?

So as not to produce a reflective beacon for enemy aircraft.

2) Why is the wheelbase of Ford CMP trucks 1/4" longer than the equivalent Chevrolet trucks?

Because Ford forgot to calibrate their ruler before they started.

Who has another question to add?

Why are Ford gearboxes SO truculent and never the same change twice?

R.

[Hanno Spoelstra]

Originally posted by FV623
So as not to produce a reflective beacon for enemy aircraft.

Sorry, wrong answer.

Why are Ford gearboxes SO truculent and never the same change twice?

Yes, good question!

H.

[Bill Murray]

I have also read somewhere that in addition to not reflecting the sunlight the windscreens also did not collect snow and grit as much.

Ford always wanted to be bigger than Chevrolet.

Question: Some, perhaps all, Fords had the Ford emblem on the truck. Not so, it seems, Chevrolet. If I am correct, why??
Bill

[cliff]

Originally posted by Bill Murray
Question: Some, perhaps all, Fords had the Ford emblem on the truck. Not so, it seems, Chevrolet. If I am correct, why??

Because Chevrolet did not have to advertise the superior qualities of their vehicles as often as Ford did!

And

Henry Ford always needed his name to be promenantly displayed where ever possible due to his big ego.

Cheers
Cliff

[Hanno Spoelstra]

Originally posted by Bill Murray
Question: Some, perhaps all, Fords had the Ford emblem on the truck. Not so, it seems, Chevrolet. If I am correct, why??

Sorry, not correct. Fords first had badges on the grille, which were later discarded and replaced by Ford and Ford Canada stampings below the headlights. Chevrolets most certainly were fitted with bowties.

H.

[Bill Murray]

Spoilsport!!

I can only suppose that the Chevrolet Bowtie was so coveted that they were quickly stolen.

Sorry, Hanno, maybe I am better off sticking to US origin vehicles where my knowledge factor is like 88% compared to maybe 20% when it comes to CMPs.

Mazeltof
Bill

[Hanno Spoelstra]

Originally posted by Bill Murray
Sorry, Hanno, maybe I am better off sticking to US origin vehicles where my knowledge factor is like 88% compared to maybe 20% when it comes to CMPs.

Well, a day nothing learned is a day wasted, isn't it? That's why I started this quiz

H.

[Bill Murray]

Yes, my dear Hanno:

As I advance in age, I try to waste less and less time every day and try to learn as much as I can.

But, it does royally piss off my wife, who is now retired from our business and seems to think I should immediately sit down with her for an hour or two after coming home and tell her about all the stuff she no longer sees on a day to day basis.

Life is truly a "Soap Opera" as we say in my country.
Bill

[David_Hayward (RIP)]

From Chevrolet chassis # 2844513801 OCTOBER 1942 # 13 cab windscreens opened 90 degrees rather than the original 30, I gather to improve ventilation?

And I loved the Ford ruler bit!

By the way, Ford of Canada was only partly-owned by Ford of USA, and definitely did not do what Henry I, Edsel and Henry II (sounds like Shakespeare plays) dicated. All overseas subsidiaries apart from Ford Motor Co Ltd, UK and Ford-Werke, Koln, were subsidiaries of Ford of Canada although Ford of Romania was probably a British Ford subsidiary!

May I ask a question please? What was the most number of cylinders ever proposed in a CMP engine? It is posible that this was actually achieved.

Winner gets a free VINTAGE ROADSCENE magazine with military article by Yours Truly in it, air mailed anywhere in the world, gratis. In case of a tie, Hanno declares the winner.

[Keith Webb]

Originally posted by David_Hayward
[B]From Chevrolet chassis # 2844513801 OCTOBER 1942 # 13 cab windscreens opened 90 degrees rather than the original 30, I gather to improve ventilation?

May I ask a question please? What was the most number of cylinders ever proposed in a CMP engine? It is posible that this was actually achieved.

12 - there was a proposal to fit the Lincoln sidevalve V12 to (I think) the F60H.

As to the windscreens, it was an Aussie innovation to make them open to 90 degrees.

[Keith Webb]

1) Why were the windows of the nr. 13 cab slanted inwards?

To quote from Bart's Observer's fighting vehicles P. 212:

" The new cab had reverse-slope windscreens to reduce glare and also to prevent the piling up of snow, slush, etc."

Another reason was for blackout convoy driving so the driver could see the pinspot tail lamps of the vehicle ahead without reflections.

And a spurious one: You can get onto the roof in three bounds: Bumper, front shell and then roof if you're athletic and tackle it at a run!

Here's another question:

Why do the Australian Chevrolets have rectangular cowl vents?

[David_Hayward (RIP)]

Not noticed it before but Holden, Woodville built the cabs so was it something to do with the fabrication process? Rectangular would also allow in more air (and dust).

[David_Hayward (RIP)]

E.L. Simpson of the Automotive Engineering Department at Ford of Canada wrote to Brigadier N.O. Carr as he was by then, the Deputy-M.G.O. on 19 October 1940 and sent copies of composite chassis drawings showing the installation of the Lincoln Zephyr V-12 [1940-41 120 b.h.p.] engine in the “six-wheeler” , and also sent power curves of the Zephyr engine and then engine then being used in military vehicles. The Zephyr engine was available in quantity and Ford proposed converting for test purposes one of the D.N.D. vehicles then at their plant: would Carr give permission for the conversion please? The vehicles could be converted to 6 x 6 configuration ‘at your convenience’. .

The advantage that the 290 cu. in. U.S. V-12 had was that it was produced in right-hand drive form. So Ford offered a F60X!

However:

On 6 January 1941, Millman sent a note to a Captain R.P. Breindahl requesting that a C.D. made up for the construction of a pilot model 6 x 6 special D.N.D. pattern vehicle by G.M. of Canada for $15,000. The production model represented by the pilot was to replace the then present 6 x 4 special D.N.D. pattern vehicle. The new truck was to have an engine of considerably more power than the 6 x 4 with three driving axles in place of two, one piece side members, a greater load carrying capacity, improved cross-country performance and “increased stamina”. C.D.L.V. 346 40/41 was then issued and forwarded to the Treasury on 8 January 1941

The C60X was born, with the pilot the only #12 Cabbed example.

Address please!!!

[Brian Gough]

Originally posted by David_Hayward
From Chevrolet chassis # 2844513801 OCTOBER 1942 # 13 cab windscreens opened 90 degrees rather than the original 30, I gather to improve ventilation?

David,

GM Service Bulletin (B-18, Oct 20, 1942) that describes the windshield opening revision said

"This facilitates the use of Fire Arms through the windshield opening and became effective......"



Brian

[Hanno Spoelstra]

Originally posted by Hanno Spoelstra
1) Why were the windows of the nr. 13 cab slanted inwards?

Originally posted by Keith Webb
To quote from Bart's Observer's fighting vehicles P. 212:

" The new cab had reverse-slope windscreens to reduce glare and also to prevent the piling up of snow, slush, etc."

Another reason was for blackout convoy driving so the driver could see the pinspot tail lamps of the vehicle ahead without reflections.

Close enough ... this is the answer I was looking for:
"The windshield slants forward placing the surface of the glass square with the driver's line of vision to the road and reduces the possibility of reflected light interfering with the driver's vision. It is exceptionally effective during blackout operations. "
Source: Ford instruction book Special Pattern Vehicles (third edition) p. 208.

H.

[Keith Webb]

Close enough

YES!!!

[Hanno Spoelstra]

A new question to revive this thread:

What CMP parts/parts was/were bolted to this jeep?

[Keith Webb]

Well there's the mirror... but that's not unique to CMPs...

[Hanno Spoelstra]

Originally posted by Keith Webb
Well there's the mirror... but that's not unique to CMPs...

Yes, the mirror. Maybe you can tell where the mirror "that's not unique to CMPs" was made, eh?

And what is the second part?

[Bill Murray]

Just a guess, but the seat looks a bit comfy for a Jeep.
Oh, and the little teeny mudflaps.
Bill

[sapper740]

Originally posted by Hanno Spoelstra
Let's start a CMP quiz. Here are two questions I would like to enter:

1) Why were the windows of the nr. 13 cab slanted inwards?

I haven't read all the posts to this thread, as there are currently 20, so if the correct answer has already been given, my apologies. The correct answer, of course, was to reduce glare and therefore driver fatigue. At the reverse angle, the windscreen is perpendicular to the most common line of sight of any driver and is therefore the least likely to produce glare.


CHIMO!

[Mike Kelly]

Originally posted by David_Hayward
Not noticed it before but Holden, Woodville built the cabs so was it something to do with the fabrication process? Rectangular would also allow in more air (and dust).

Because GMH already had the tooling to make the rectangular vent . They had been using it since 1939 on their civilian Chev . cabs . Why spend lots of money making new press tools for the oblong shaped vent , when there already existed a useable rectangular press tool .

Mike

[Keith Orpin]

Bit of a guess this, but when I rebuilt my 44 Ford jeep a few years ago, all of the brake drums had the Chevrolet bowtie cast into them
Keith

[Pete Ashby]

Those wipers look a bit odd,

I think the good Generals arm conceals CMP wiper motors

Pete

[Nigel Watson]

Originally posted by Hanno Spoelstra
1) Why were the windows of the nr. 13 cab slanted inwards?

2) Why is the wheelbase of Ford CMP trucks 1/4" longer than the equivalent Chevrolet trucks?

Answers to your questions Hanno.

1) Windows are slanted outwards (trick question!) but if its a language thing its because under severe braking the driver had more time to protect his face! (Evidence: eyebrow hair on the No.12 window glass and handprint on the No.13)

2) Because the Master demanded the Ford had to be bigger and better! (Evidence: They are!)

Nigel

[Max Hedges]

I have often wondered what the purpose was for fitting the bumper bar jewels. some of the early photos of cmp's 11 type appear not to have jewels fitted and here in Australia the later production type 13 cab had smaller holes in the bumper bar without a jewel.

Does all this make sense

Max

[Howard]

Originally posted by Hanno Spoelstra
2) Why is the wheelbase of Ford CMP trucks 1/4" longer than the equivalent Chevrolet trucks?

Well Hanno, I am busting to know.... Just why IS the Ford 1/4" longer?

HH

[David_Hayward (RIP)]

I have never found out an official answer. I did wonder years ago on reviewing evidnce from 1940 about the very first DND-pattern trucks delived from Oshawa that holes had been drilled in the side frames 1 inch out...I wondered if it was a chassis rail jig error by Fords? I should love to know whet the real answer is!

[Hanno Spoelstra]

Originally posted by sapper740
I haven't read all the posts to this thread, as there are currently 20, so if the correct answer has already been given, my apologies. The correct answer, of course, was to reduce glare and therefore driver fatigue. At the reverse angle, the windscreen is perpendicular to the most common line of sight of any driver and is therefore the least likely to produce glare.

Congrats Derek, you get the Afterburner Cup for this answer