Alco AAR class B trucks

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vernon911
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Re: Alco AAR class B trucks

Post by vernon911 » Wed Jan 10, 2018 11:26 pm

Just a quick fyi, we carry the correct brake setup for the class B trucks. We have the cylinder casting, piston rod, push rod, pivot arm and brake shackles. There were all developed for our personal U33B locos. We sell just the castings but some have made it functional with Clippard cylinders similar to how MDM used to do it.

Regards
Paul
Precision Steel Car

OddDuck
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Re: Alco AAR class B trucks

Post by OddDuck » Thu Jan 11, 2018 9:06 am

Excellent, thank you Paul. My brake cylinders are just solid dummies, and I am going to figure out a template so the end user can make the brake hangers out of sheet metal. I suppose a talented person could cut the front part off my cylinders, bore them out and make them work but that would be a lot of bother.
"If you took the bones out they wouldn't be crunchy!" -Monty Python's Flying Circus

OddDuck
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Re: Alco AAR class B trucks

Post by OddDuck » Sun Jan 14, 2018 11:10 am

Went over to a friend's house and borrowed a spare motor he had for a pic to show my mounting scheme. I made the bolster so a motor could be hung underneath it. Chain drive to both axles, etc. He took a few pics for me, and I finally figured out how to shuffle them around on my phone to share them.
I think that, at least with this type of motor, the integral brake on the end would have to be removed to give clearance for the drive sprocket and chain.
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"If you took the bones out they wouldn't be crunchy!" -Monty Python's Flying Circus

OddDuck
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Re: Alco AAR class B trucks

Post by OddDuck » Sat Apr 28, 2018 9:07 am

Just a couple of videos showing a very similar set of trucks to my new AAR trucks, this was basically the first iteration of them. These were the set I cast for a friend's Alco he was building. Another friend finished the trucks up and got them running. These were the first test run.
https://youtu.be/xzYbtyprLjk
https://youtu.be/p6RvZpUcTk4
"If you took the bones out they wouldn't be crunchy!" -Monty Python's Flying Circus

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