Generator equipped CJ3a

1945 - 196*, Willys CJ series, questions, discussions, regarding anything related to the post war jeep.®
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Re: Generator equipped CJ3a

Post by kristaga » Sun Apr 18, 2010 2:40 pm

Larry E Long wrote: Yes, some M-38's did have bottom mount rads but this isn't an M-38, it's a CJ3A.

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I know it is not an M-38, but it is strange that it thas the M-38 rear seat mounts.


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Re: Generator equipped CJ3a

Post by Steve Webb » Sun Apr 18, 2010 3:05 pm

I am pretty sure that the change on radiators was done in 1950. Both of mine are side mount. those brackets on the wheel housing could support whatever test equipment there was. Given no tool box and that tunnel on floor under passenger seat it is unique. Anybody able to run those other plates for contract info?
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Re: Generator equipped CJ3a

Post by Cuz » Sun Apr 18, 2010 6:10 pm

The data plate makes it an early USAF flightline power start unit. Most piston and older or smaller jets used 28 volt DC starter generators then. Newer aircraft like the B52 and KC135 used 115/205 3PH 400 Cyc AC. And air start starters.

The rear floor is clearly CJ3A with the completed strap over the indent rear seat front leg receptacles and drilled rear leg receptacles. Those odd fabricated brackets to accommodate the military rear seat were obviously added by someone but when you'll never know. The M38 rear seat side mountings are quite different than those.

Image

M38's used the same radiator mounting throughout production.

It is odd for a 1952 CJ3A to have a bottom mount radiator. I say odd but not impossible. Since the jeep was a special contract it is very possible it wasn't a standard "Rolled down the assembly line jeep or it is also possible the Szekely Comp used their own stock frames which may be modified in some ways not easily seen in these photos.

The data plates on the jeep are an Air Force contract for an Air Force flightline power unit equipped jeep that happens to use a Generator designed originally for the Navy. This is also not at all uncommon.
Last edited by Cuz on Sun Apr 18, 2010 8:24 pm, edited 1 time in total.
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Re: Generator equipped CJ3a

Post by Steve Webb » Sun Apr 18, 2010 7:36 pm

The data plate shows both voltages you refer to Wes for older and newer aircraft.
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Re: Generator equipped CJ3a

Post by Cuz » Sun Apr 18, 2010 7:46 pm

The aircraft power carts continued to carry both DC and 3PH AC up to present date. The old MD3's, -60's and etc. were all a combination power source with 28 volts DC (usually 400 to 600 amp capability) and 115/205, 3PH, 400 Cyc AC (usually in the 60 KVA range). Although the B52 and KC135 were primarily 200V 3PH 400 Cyc AC their batteries were 28 volt DC and their essential busses were dual power.

Here's a Navy/USMC Carrier Deck power unit/tug
53 Deck Jeep.JPG
53 Deck Jeep.JPG (192.51 KiB) Viewed 2794 times
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Re: Generator equipped CJ3a

Post by kristaga » Sat Apr 24, 2010 6:25 pm

This is getting really interesting. Some searches using Google with this information has among other given me these images from the following website: http://48cj2a.com/apu.htm" onclick="window.open(this.href);return false;

Image
Note that they all have high hoods.

Image
What engine is this? An F134?

Image
The PTO-driven generator.


I have also come across a thread on an Argentinian forum that discusses these vehicles (in Spanish, but the photos speaks for themselves), with a lot of images, including these that show a four wheeled version that probably is similar to mine:

Image

Image


This thread here on g503 shows someone selling of a generator, but that one is directly PTO-driven and not via belt.

Comments anyone? Keep them coming. As said, this is very interesting.

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Re: Generator equipped CJ3a

Post by rtr » Thu Apr 29, 2010 5:46 am

Hey guys,
I stumbled across this thread while looking for something else. What are the two guages that are just to the left of the dataplates ?
Thanks.

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Re: Generator equipped CJ3a

Post by Steve Webb » Thu Apr 29, 2010 10:55 am

The far left is RPM"s and the near left looks to be engine hours to me
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Re: Generator equipped CJ3a

Post by kristaga » Mon May 24, 2010 5:54 am

Image

When did Willys change the speedometer from max 60 mph to 70 mph?

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Re: Generator equipped CJ3a

Post by Steve Webb » Mon May 24, 2010 4:32 pm

The speedos had to have been changed before 1950, both mine go to 70.
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Re: Generator equipped CJ3a

Post by kristaga » Fri May 28, 2010 1:19 am

Image

What engine is this? An F134? It is obvious that it isn't a flathead at least.

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Re: Generator equipped CJ3a

Post by gearhead » Fri May 28, 2010 6:57 am

Definately a "F" head Willys, same type came in 3B and CJ5 family.
These were a popular swap for "L" heads, usually requiring some clearance for the carb.

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Re: Generator equipped CJ3a

Post by kristaga » Thu Jun 24, 2010 5:09 am

I wrote: I have also come across a thread on an Argentinian forum that discusses these vehicles (in Spanish, but the photos speaks for themselves)
The willysargentina.com site seems to have gone down for good. Google still has a cached copy of the actual discussion here:
http://webcache.googleusercontent.com/s ... 628a4f3155" onclick="window.open(this.href);return false;


And if you like me not are able to read Spanish, this is how the cached version looks when Google translate has machine translated it to English:
http://translate.google.com/translate?h ... 628a4f3155" onclick="window.open(this.href);return false;

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Re: Generator equipped CJ3a

Post by Joe Gopan » Thu Jun 24, 2010 5:22 am

Szekely was a well known manufacturer of Aircraft Ground Power Generators commonly called "APU" They were a popular sound in the 40's thru late 50's at USAF bases using the early Jets, many were SP units that used modified 4 Cyl Continental Aircraft Engines and made a familiar droning sound that would be heard all day long.
Northeast Airlines had such a jeep at the local terminal in the late 40's early 50's for use with their DC-3's.
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Re: Generator equipped CJ3a

Post by kristaga » Thu Jun 24, 2010 5:58 am

Ben Dover wrote:...many were SP units...
What is an "SP unit"?


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