Doug's Railroad Shop

DD1 update

Latest update 09-27-2009

These two photos are of the first frame for the DD1 electric I am building. I doubt that I will use this method in the final construction method. The cutouts in the frames are squared off instead of rounded out in the prototype. However, this assembly will allow me to start working on the power train. The gears on the drivers will not be used. The closest drivers I found that were flanged and available had gears.

The photos on 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.

Status from 09-27-2009

These photos show the frame with the idler axle and counterweights added. I will be working on the motor axle and counterweights that will be in the cab and the drive train from the motor to this cab axle next. I have motor axle mounts designed as well as the drive rods. All that needs to be done is to manufacture them. Although a DC71 motor from Bowser will not fit in the cab, I do have the motor and gear and worm gear ready. Once I finish binding some books for customer orders, I'll get the chassis and DC71 motor running. Hopefully there will be no major errors in the design and the motor and drive train will work well.

The motor axle will be mounted 0.057" behind and 0.720" above the front driver. The motor mount bracket will need to be soldered onto the current side frame. In the final production model, the side frame an motor axle mount will be one piece.

Please notice the two drivers have their gears removed. I will be building one other DD1 pair on this engineering prototype to try to work out more bugs.

Status from 09-19-2009

These photos show the frame with a front truck mock up. One is from the side and the other is from the top.

Status from 09-10-2009

These two photos are of the first frame for the DD1 electric I am building. I doubt that I will use this method in the final construction method. The cutouts in the frames are squared off instead of rounded out in the prototype. However, this assembly will allow me to start working on the power train. The gears on the drivers will not be used. The closest drivers I found that were flanged and available had gears.

The photos on 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 photo shows the side of the frame. The front wheels were placed for looks. The front truck has not been started. The magnet on the back of the frame keeps the frame from leaning forward to touch the track. The axle slot between the front truck and the first driver is for the idler axle and counterweighted cranks. The second idler axle will be above the first driver and a little to the back. It is where I plan to put the worm gear and motor.

This is the top view of the frame. The spacers between the frame sides are PCB (printed circuit board) stand-offs.

This a view of back to back frames. It is starting to look more like the DD1 from on page 92 of "The Pennsy's P5 Electrics".

The poor soldering job on the top is because I used a steel gluing jig to hold the parts square. Of course the jig acts like a heat sink. The bottom solder joint looks good, it just did not flow around to the top. Once I have the front deck soldered in, I'll correct the other cold solder joints.

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