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 Rank: Beginner Level 1 Groups: Registered
Joined: 29/01/2019 Posts: 6 Points: 18 Location: Australia
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Issue 37, checking motor by carefully turning the gear. IT will not rotate.
I presume it is just a normal motor!!
Charlie
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 Rank: Pro Groups: Joined: 24/08/2009 Posts: 48,827 Points: -13,348
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Electrical replacements should only be sought if deemed inoperable during electronic testing
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Rank: Beginner Level 1 Groups: Registered
Joined: 29/01/2019 Posts: 6 Points: 18 Location: Australia
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There is no testing for this motor for now. As I said, small gear on the motor shaft should rotate by fingers, and it won't. This is why I feel it is unserviceable. I expect someone to verify this test, from construction. I would call this a mechanical test, not electrical.  IT/Electronics Tech. Eng. Charlie
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The light saber operation is tested in issue 53 along with the leg sensors. At this point you can order replacements if needed. Current builds:-C57,Zero, Lamborghini Countach, Caldercraft HMS Agamemnon,Robi,R2-D2, MFH Cobra .
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Rank: Beginner Level 1 Groups: Registered
Joined: 29/01/2019 Posts: 6 Points: 18 Location: Australia
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Thanks for the reply. As I said it should rotate using fingers.
Australian distributors say they will send me a free copy of 37.
My concern by asking is this motor a special type or just conventional?
Have you built R2-D2? If so you would recall if shaft rotates by hand.
Cheers
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In actual fact, I Did the R2 build. The motors are high torque and therefore difficult to turn. It's not advased in the instructions to do such a test and therefore best left alone until the operation is tested in issue 53. Current builds:-C57,Zero, Lamborghini Countach, Caldercraft HMS Agamemnon,Robi,R2-D2, MFH Cobra .
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Rank: Beginner Level 3 Groups: Registered
Joined: 30/05/2017 Posts: 29 Points: 93 Location: USA
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These are gear motors with some pretty high torque, and you really shouldn't try to turn it. You have to realize that the motor has to rotate its gear many times to get the outermost gear to move even slightly. Going the other way, if you try to force the outermost gear to turn, the motor would need to spin like crazy to allow the movement, so instead it acts like a brake. You'd have to apply so much pressure to get it to turn, it could easily damage the gear mounts themselves. Current Builds: R2D2, Millenium Falcon
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Rank: Beginner Level 1 Groups: Registered
Joined: 29/01/2019 Posts: 6 Points: 18 Location: Australia
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Yes, geared drives, as the feet are. One should not try and turn. I see no one has yet to the think which motor I'm talking about. The quite small SABRE PUSH UP one, with issue 37. It just has a small gear on the motor shaft. As I have said this should turn using fingers.
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