Doug's Railroad Shop

DD1 update Page 2

Latest update 02-01-2010

The current status of my DD1 project is posted here on this page. The original page was left unchanged for comparisons.

The photos and the ideas in this web site may be used by anyone for non-commercial use. If you would like to reproduce them in a non-commercial use (i.e. non-profit news letter), please give me credit for the photos and let me know you are using them. If you have a commercial use, please contact me first. This information is copyrighted.

Status from 02-01-2010

The second frame for the DD1 has been assembled. The front trucks have been assembled. The front truck support has been attached. A new counterweight for the cab motor idler might be needed. The current on designed to fit the main idler on the frame may be a little too large for the drive wheel near the front truck. The drawbar between the two has been started. The flywheel in the back of the right hand chassis is for balance only.

Status from 12-27-2009

Current progress has an assembled and working dummy DD1 chassis. It is on the left of the E2B (front) and E2C (rear) chassis (click on link to see E2B and E2C details).

I have found a good motor that I might be using for the DD1. Once installed, it should allow both DD1 halves to be powered with two motors and have room for a DCC board. After the beginning of the year, I'll see about a custom DCC board. I am not sure I'll be able to afford it and keep the price low, but I will look into it.

Status from 11-18-2009

Current progress shows the worm gear axle supports soldered to the side frame.

Status from 11-10-2009

This photo shows how half of the the DD1 will look. It is tilted forward because the floor was not cur out for the rear driver to nestle into. You can see the side rods and the counterweights. Notice that one drive rod goes up into the cab from the idler counterweight.This photo image on my screen (1280x1024) is just a slight bit lager than S scale.

Looking from above into the cab, the cab idler axle can be seen supported by the patch bracket that I need to solder to the side frames. This axle will have the worm gear and the cab area to the top of the photo will be where the motor is placed. The area in the cab below the axle (back of the cab) will be for placing weight over the drivers.

The parts laid out to the left of the photo include the engineering prototype side frame, a counterweight, the side rods, the main rod, and the unformed blank for the support (to be soldered to the side frame) to support the worm gear axle. In the future, I will have the side frame and the worm gear support as a single piece.

Here is a side view of the entire assembly. The counter weight axle in front of the drivers has been assembled and super glued together. The NWSL Quarterer I used did not quite quarter the Bowser steam locomotive drivers to the the counter weight axle the same. This is novice training 101. The top worm gear axle is not glued together - it needs the worm gear installed before assembly. I will need to modify the Quarterer a little bit to get the quartering correct. It seems that the Quarterer sides I have assume that you are using a larger diameter side rod bolt than an 0-80. Definitely not a bog problem, just a gnat bite.

This photo is a top view of the frame assembly. The the bent piece of brass between the frames is the little connecting piece between the worm gear support. It will not be needed in the future.

Here is a photo showing the the worm gear support with the worm gear axle removed. It should be perpendicular to the frame and a few hundredths of an inch behind the driving wheel.

I hope you have found this interesting. I am willing to share my progress with you as long as it is understood that this is copyrighted information and not used in a commercial application.

Link to DD1 page 1.

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