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[justboatonic]

OK, got a nice new shiny 900 motor (thanks for all the pm's by the way. I'd already ordered this before I got them though!).

Anyway it fracking huge and weighs in at over half a kilo! Oh well, its less lead to put in the hull 

This motor comes with an 'X' bracket on the front which I guess is really the motor mount for bolting directly to a bulkhead(?). Well the hull its going in doesnt have a bulkhead to fix it to. So, is there another graupner mount it can be fixed to that allows the motor to fixed onto a plate which in turn can be fixed to the inside bottom of the hull? A bit like the MFA geared 919 motor and base plate?

Not certain a bodge job Id create would be sufficient for the torque from this motor. Any suggestions?

Ta.

[Marks Model Bits]

I have 'L' shape mounts for these motors.....

Mark.

[stallspeed]

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Not certain a bodge job Id create would be sufficient for the torque from this motor. Any suggestions?

Think about it for a moment.
You get a negligible gyroscope effect but the motor torque is transmitted through the coupling and shaft to the prop.
It's the coupling you want to worry about.

[justboatonic]

Think about it for a moment.
You get a negligible gyroscope effect but the motor torque is transmitted through the coupling and shaft to the prop.
It's the coupling you want to worry about.

Why? Its going to be swinging a 70mm size prop and wont be running at high speed.

[stallspeed]

I'm just saying you don't need to worry about bodging the job.The mount is not a problem.If anything it is a coupling.

[justboatonic]

I'm just saying you don't need to worry about bodging the job.The mount is not a problem.If anything it is a coupling.

Thanks but you havent seen my bodging skills! Seriously though, what do you mean beware the coupling? Isnt the raboesch (sp) type good enough?

[stallspeed]

The coupling is the only part that is under stress.That is my point.
You could hold the motor down with tie straps for all it matters.

By all the way,large mains frequency motors turn at near 3000 or 1500 rpm but that is not high speed.The bigger the torque,the stronger the coupling.