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Author Topic: Motor Lining Up  (Read 1360 times)

shimsham

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Motor Lining Up
« on: January 09, 2011, 10:11:14 PM »

Is there any tool or specific way to line a motor with the propshaft correctly.



 ;)
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Colin Bishop

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Re: Motor Lining Up
« Reply #1 on: January 09, 2011, 10:30:23 PM »

The usual method is a bit of rigid tubing which is the same length as the coupling you intend to use. Assuming that the prop tube is already in place, you can then align the motor to fit.

Colin
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Pat Matthews

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Re: Motor Lining Up
« Reply #2 on: January 09, 2011, 11:16:30 PM »

I try to set the motor first, then the prop tube. Chicken and egg, really... I like it best when I've designed my own hull, and can build alignment features into the frames for a close fit. On pre-made GRP hulls, it's a bit more open as to where datums might be. In this case, I do something like:

1. Rough fit the tube through a hole in the hull with a bit of slop.
2. Make the aforementioned dummy alignment coupler.
3. Build a motor mount that puts the motor in the right place while connected to the shaft, and again with the shaft in the right place.
4. Glue down the motor mount... sometimes a thick construction adhesive will make a nice bed to set it into.
5. When that is all set, fill in the hull hole around the prop tube, locking it in place.
6. Finally, the upper end of the tube should be braced in some way to prevent it from flailing and working the epoxied hull joint.


Oh, and don't forget to replace the dummy coupling with a proper one!
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Pat Matthews
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Martin [Admin]

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Re: Motor Lining Up
« Reply #3 on: January 09, 2011, 11:28:30 PM »

Some good info here too:
http://www.modelboatmayhem.co.uk/forum/index.php?topic=11934.0
http://www.modelboatmayhem.co.uk/forum/index.php?topic=24869.msg244849#msg244849

For more info do a search for  motor alignment  from the first page of the forum. 

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sentry

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Re: Motor Lining Up
« Reply #4 on: January 09, 2011, 11:44:52 PM »

Hi I got one from mobile marine models about 11 have a look at there site.
                             regards Sentry.
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