Barber S2 Roller Bearing Trucks
thingiverse
Replacement side frames for USA Trains G scale freight trucks. These were adapted from the files uploaded by raby to make fully sprung trucks. I did resize the pockets in the side frames to accept 3x6x2.5 mm flanged ball bearings. You may need to slightly polish the factory USA axle ends to get them to slip into the bearings. The bearing should just press easily into the side frames themselves. I attempted to print these in petg but the detail on the springs looked really bad. A friend did some for me on his resin printer and the detail is amazing. If you don't care about spot on detail and legible lettering on the side frames fdm would work though. If you want to make complete trucks you can use the bolster file from 512Designs "1:29 G GAUGE USA TRAINS COMPATIBLE TRUCKS"
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