help identifying this truck

I don't think it's Atlas.  The Atlas sw8/9/1200 do feature this sideframe, but those particular models don't use truck mounted motors or have outside gearing.  The sideframe attachment points also don't match the Atlas trucks.  In fact, the sideframe attachment points don't match any Atlas truck truck that I'm aware of.

Good luck!
Jim

Side frame picture would obviously help. Looks Chinese to me.

could it be a very old MTH design? Pre MTH split axle designs.

I've never worked on the first designs from them.

I would have expected some MTH marking though.

I would have expected an internal gear for driving the axles.

Vernon, thanks for your replies. but my truck is an AAR Type A, your examples are a Type B.

SWRR thank you, the sideframe is the Type A. relevant info are the attachments points as shown.

Joe, I looked through all available truck part examples on a MTH site I found. did not see any match. don't know if their list is comprehensive.

who else had removable bottom plates in a 'china drive' ?

here's a new Lionel SW1

what I mean is....

you're going to need someone who worked on this exact truck, I believe.

Those axle bearings look exactly like the MTH ones. I wonder if they got the design from someone else?

I don't see the pictures of the early MTH ones (ps1 era) on their site.

I'm not sure, but it might be an early Weaver vertical can drive. The MTH drives were similar to the Weaver. I have an old set of Weaver E8's and though they're 3-axle, I can look for similarities. I'll have to dig out the units.

It looks like a MTH truck.

What is this truck electrically ?  That is, are the wheels on one side common to the frame, or does the frame 'float'?  How are the wheels insulated, or are they ?  Are those bearings conductive ?  Etc

SZ

Matt; I don't think its a Weaver. They never did an engine that used the Type A truck. Plus the typical Weaver motor mount does not fit the truck. I am not aware they ever did a diesel with a different mount.

Steinzeit: the wheels are insulated on the spur gear side. typical plastic bushing between axle and wheel. yes the bearings are conductive.

Did K-Line ever make a truck with a removable bottom plate?

Eureka, finally figured it out!

The truck is a Weaver from the Baldwin VO-1000 model. It is the only engine Weaver made that used the AAR type A truck.

Now to find the motor mount. Which is smaller than the others Weaver used.

I know Bob Lavezzi has most of the parts from when Weaver closed. Any other sources?