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(Traction) motoring on

Posted by Pugsley , 16 September 2010 · 351 views

37 S7 kit JLTRT traction motor slight bodge
The first of the traction motor assemblies is approaching completion, just the fitting of the motor gear to go now (I'm not counting the axle assembly as part of the motor unit - I've still got to thread all 12 parts of those!)

Side view of the motor assembly:
Attached Image

The first one has been close to disaster a couple of times, due to me not really having a clue how best to put them together :rolleyes: I've now worked out the best sequence for doing it, which should make the next 5 go together a lot quicker.

End view of the motor asembly:
Attached Image

I've also discovered another design fault - I've made the bracket fit the motor extremely accurately, however I hadn't taken into account that the shaft bearing of the motor protudes from the casing by about 0.5mm, which meant that the bracket wouldn't fold square. I've now had to drill the hole for the motor shaft out to 4mm, so it sits nicely in the support frame.

View of the motor with wheel, giving an idea of what is visible behind the wheel. With the gears painted black, it shouldn't be too bad :
Attached Image
It's all a (fairly steep at times) learning curve, I guess :D





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James Hilton
Sep 16 2010 18:53
I love the tags, 'slight bodge'! I didn't keep track on the thread, is this a fully sprung jobby hence why you need the motors and gears on each axle? Sounds like proper minature engineering, great stuff!
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James Hilton
Sep 16 2010 18:54
I love the tags, 'slight bodge'! I didn't keep track on the thread, is this a fully sprung jobby hence why you need the motors and gears on each axle? Sounds like proper minature engineering, great stuff!
Thanks James. Yes, fully sprung, with each axle powered by its own traction motor.

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