Douglas Edgar van Veelen

Doug's Railroad Shop

E2B - E2C - E3B update

Latest update 02-01-2010

These photos are of the engineering prototypes for the E3B-E2C electrics I am building.

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Status from 02-01-2010

The E2B chassis now has the Atlas C420 motor and trucks installed. It has successfully run. The motor had one flywheel removed and the shaft and universal shortened.

The E2C chassis now has the Bachmann E33 trucks installed. There is not enough room for the E44 motor. A short motor with the wrong shaft diameter is shown taped into place. A correct coreless 1" motor with 2mm shafts is on order. Not that the body bolster was soldered onto the bottom of the side frames instead of the top of it. The coupler mount rear sill is about 1/8" too high.

The E3B chassis now has the first frame assembled. I had an assembly error and a possible spacing error in the design. The three trucks should have the same distance between the center and either end truck.

The E3B half frame shows up in this view.The two trucks below it (the left and center trucks) allow the three trucks to more easily enter curves.

The E3B the half-frame span bolster is below the body bolster on the left. I made a vertical assembly error.

The E3B half-frame span bolster is now beside the body bolster.

The E3B frame assembly needs more tweeking.

Status from 12-27-2009

I now have the E2C brass built-up frame started. I am working on the motors, motor mounts, body interface and so forth. The E2C frame top view shows the error for the front truck bolster. It was measured twice for the front truck body bolster and I made the same mistake twice. The second 1/4" square tube had to be pieced in since I had a rather strong solder joint on the original.

The side view of the E2B (front) and the E2C (rear) brass frames show up good here. I just wanted to have the DD1 chassis (left) in the views also. I have motors for all three items on order. I have decided that using the Atlas/Kato motors may not be the best idea. All frames are engineering prototypes and the final production format will probably be different.

Status from 10-17-2009

I now have the E2C brass frame started to see where mods need to be made. The pivot point needs to be raised above the floor.

Status from 10-05-2009

These photos show both the E2C and E3B mock-ups. By using commercial trucks, development costs for the drive train are lowered significantly. As with the E3B, the trucks for the E44 (rigid wheel base = 13') are shorter than for the E2C (rigid wheel base = 16' 5"). I plan to work on brass frames next : either after the DD1 is released or while it is holding for materials.

This photo is a side view of the E3B with presentation paper sides. Room for a motor in this space will be a challenge. I had to work out a mechanism to allow the center truck to move for going around curves.

This photo shows the E2C mock-up using Bachmann E33 trucks. Although it is tight, I think an E44 motor might also be used.

This photo is a top view of the E3B. Room for a motor in this space will be a challenge. I had to work out a mechanism to allow the center truck to move for going around curves.

This photo is a top view of the E2C.

Status from 09-22-2009

These two photos are of the mock-up for the E3B electric I am building. This uses three Athearn S12 truck. The Athearn trucks have a wheel base of 8' whereas the E3B had a 9' 6" wheel base.

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