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Author Topic: Scratch build Riva  (Read 19423 times)

boatmadman

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Re: Scratch build Riva
« Reply #50 on: July 10, 2007, 10:41:53 am »
Mick,

I have never needed to use double uj's, if you align well enough, a single is all you need.

You can make an alignment tool using a peice of bar drilled for the motor shaft at one end, the prop shaft at the other. Mount the motor with this connected, then remove it and replace with uj.

I have always aligned by eye, been lucky so far!

Ian
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mick

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Re: Scratch build Riva
« Reply #51 on: July 11, 2007, 04:39:37 pm »
Ok Ian, just noticed something.....do you need twin rudders with twin props?...Mick
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boatmadman

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Re: Scratch build Riva
« Reply #52 on: July 11, 2007, 04:50:00 pm »
Mick,

Well, I suppose its not essential, but I would strongly advise twin rudders, I cant think of any application where there is 2  props and one rudder - but then again, I haven't seen all boats! lol.

Twin rudders means that the prop wash acts directly on the rudder surface, thus ensuring best manouverability.

Ian

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mick

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Re: Scratch build Riva
« Reply #53 on: July 11, 2007, 05:00:04 pm »
 :-\
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mick

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Re: Scratch build Riva
« Reply #54 on: July 11, 2007, 05:03:03 pm »
Think I messed up my last message...try again.

Thanks Ian, just trying to cover all possibilities...Mick
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