The Stovebolt Site Forums The Parking Lot Big Bolts Not mine but cool

http://www.ebay.com/itm/GMC-Other-/131723841848?forcerrptr=true&hash=item1eab5a5138:g:mCQAAOSwnLdWsAZb&item=131723841848

Fixed your link.
Harold
Lift Truck

Okie, so you don't draw the wrath of the moderator(s) stovebolt has a specific forum for Ebay and Craigslist links. They won't bite you but they might slap your hand.

Oh, that is so cool. Don't let John see it. Although, I can see a barrage of ODSS members coming up here to "help" John and doing who-knows-what with this scissors truck!

Impressive.

It's not so bad to have it listed here since the BB forum are pretty hard core. They may not look at the eBay and Craigslist forum. Hmmmm .. I take that back: they probably search those two SITES regularly for stuff like this.

We can post it in both places. Thanks for being diligent tho Martin and thanks Harold for fixing the link!

Peg

Its a neat piece of machinery. But with no outriggers, I'm not sure what a person would do with it. If it were a 550 series with an Olds engine and air brakes, I think I would do some serious thinking. I've got the glass that's missing. And it looks like the guy has a lot of real estate to keep it until the weather gets better. I would have to take a semi up there. I wouldn't try to haul it on a goose neck.

It appears as if those scissor arms are solid steel, if so that mechanism and steel deck is seriously heavy before putting anything on it.

I can't make out what is on the door, wonder what it was used for. I've seen similar at the airport but nothing this heavy. The airport idea could explain the lack of outriggers, not so necessary on dead flat concrete.

A lot of iron for that price!
Would make a good Mardi Gra float/dance floor.

Don

Man, I'd love to have the cab. It would look good on my 2 1/2 ton military M35.

Someone let Mongo know. They could use it in KC for the band

Rare 5-Window Blue Chip Cab!! "Civil Defense" is the emblem on the door. I'm interested in the driveline set-up! Juice,or air brakes??

I'm pretty sure it is hydraulic brakes. It looks like a brake pedal all the way down to the floor. This is what air brakes would look likel

https://plus.google.com/u/0/1126369...6411612146&oid=112636930370126476644

Also, I don't see any air chambers in the picture from the rear. And I'm not sure they made brackets for a compressor for the Pontiac engine. The engine would probably be a 336 Pontiac. The transmission might be a New Process 540 or 541. The suspension appears to be Hendrickson and the rears appear to be Eaton. It could be one of those goofy Eatons with the drive shaft going to the rear over the forward axle instead of a throughshaft like Rockwell used.

A first glance, it looks like one of the food service trucks at an airport, but it is way too heavy for that. Just a wild guess would be that it was used to load weaponry into B52s.

I didn't see the extra gear shift levers for the Power Divider. I wonder if the rear rear is a tag?

Mike B

Interesting "Cold War" Civil Defense Stuff! i didn't see any inside cab pics,just L.,R.,and front pic's.

If power divider is vac-operated,the switch may be mounted on/under the dash. My friend has a '51 G.M.C. Tandem. The power divider switch looks identical to the "bicycle Bell" 2-speed A.D. switches,except marked Wet/Dry,not Hi/Lo. From the looks of the hubs,both rear axles are "Drivers".

I thought a switch marked wet and dry was to reduce air pressure to the front brakes?

The wet and dry usually does denote a switch that completely killed the steering axle brakes. A Bendix TW type switch, which is still commonly used, controlled a relay valve. And the switch on the dash was usually marked wet or dry.

http://www.bendixvrc.com/itemDisplay.asp?documentID=2739

If you scroll down on the pdf, it lists all the plates that are available for the TW type valve.


Back then, it was thought that the steering axle tires locking up on wet or icy pavement is what caused a jack knife. However, since it has been learned that the drive axle tires locking up is what causes a vehicle to switch ends. In fact steering brake limiters or omitting steering axle brakes has been illegal since about 1989. I used to run with steering axle brakes omitted to save weight. I was forced to retrofit in 1989.

Power divider locks are usually marked in and out, but I have never owed a twin screw that didn't have air. And they all shift with a Bendix TW type toggle switch.

From the looks of the picture, it is Eatons rears because of the round banjo housings rather than the square Rockwells. It could be one of the goofy Eatons that had the interaxle driveshaft going over the top of the forward axle. They only built them a few years because the Rockwell with a throughshaft was so much more practical. I don't think the Eaton even had a power divider. I think they resembled a 4 wheel drive transfer case and was used on vocational trucks rather than over the road trucks.

Willy,

There's a small left and right arrow on either end of the 4 eBay pictures that let you scroll through more pictures...

Mike B

Thanks,Mike! This G.M.C. I'm referring to,has a "bicycle Bell" type switch,Very similar to the 2-speed A.D. switches. this truck is equipped with juice brakes-No air-over-hydraulics. The switch is connected,(by vacuum lines),to the "power divider". Then,again,this is an early '50's G.M.C. Tandem 450. Kenneth is correct. The "power divider" resembles a transfer case,and the rear driveshaft goes over the top of the front axle,and connects to the rear axle at quite an angle. Probably a truck with a top speed of 40 M.P.H. This one was used as a dump truck in a quarry. Not much highway use for that truck.

Willy,

Does the power divider also act as a aux transmission with double under, under and direct, or are the rears so low that's not needed and the switch just locks in the second rear only?

Mike B