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Author Topic: Motor advice for 40mm Schottel drive  (Read 1514 times)

Peter57

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Motor advice for 40mm Schottel drive
« on: August 17, 2023, 08:21:16 am »
I am thinking of building a small pusher type tug (LOA about 310mm, beam about 140mm) powered by a single 40mm Schottel drive. Please can anyone advise what motor I should consider for this set up? I do have a spare Mtroniks brushless 1100kV motor if that would be suitable.


Many thanks
Peter
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Subculture

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Re: Motor advice for 40mm Schottel drive
« Reply #1 on: August 17, 2023, 09:37:38 am »
Shouldn’t think you’d require more than about 3-4kRPM for that prop diameter.

So about 600kv for a 6v system and half that for a 12v. 1100kv will turn your tug into a speedboat.
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Peter57

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Re: Motor advice for 40mm Schottel drive
« Reply #2 on: August 21, 2023, 08:31:29 am »
Thank you. I will try to avoid the speedboat option!
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JimG

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Re: Motor advice for 40mm Schottel drive
« Reply #3 on: August 21, 2023, 12:32:05 pm »
Does the prop turn at the same rpm as the motor or is there gearing involved in the drive system? haven't had a look at the more modern Schottle drive systems but in the old Graupner drives the prop was geared down from the motor  allowing for larger props.
Jim
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Peter57

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Re: Motor advice for 40mm Schottel drive
« Reply #4 on: August 29, 2023, 09:27:27 am »
Good question Jim. I do not know the answer, although I suspect it is geared down. I will try to find out.


Thanks for the comment.
Peter
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