Motor Mount Question - Mountain Buzz
 



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Old 3 Weeks Ago   #1
 
Ashland, Oregon
Paddling Since: 1992
Join Date: Sep 2014
Posts: 46
Motor Mount Question

Looking for different ways folks are mounting their motors. Any pictures that you have would be helpful. Any tips that you can suggest would help too.

How important is having the motor mount attached to the frame? (like with the NRS motor mount -- you can attach the motor mount to the main frame with two bars in the stern that run along the tops of the tubes). Currently I just have an inverted U Shaped mount on the back of my raft that is held in place with about 6 cam straps. I tested it out yesterday and there was some sagging going on. I know I needed more air in the boat but was just curious on other opinions on the need for having the mount tie into the main frame with bars.

Thanks for your time and thoughts,

Bongo

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Old 3 Weeks Ago   #2
 
Salt Lake City, Utah
Paddling Since: 1969
Join Date: Apr 2009
Posts: 356
It's only important if you like keeping the baffles intact on your boat... or want to push a flotilla. Transferring the thrust of your prop through your frame and on to other boats frame to frame (oarlock to oarlock on your sides and diagonal from corners of frames if you stack, wedges and diamonds are the most efficient shapes - always push, never drag...) is always the most efficient method, both for handling and speed. There's a reason almost all the old rubber motor mounts on old Avons and Campways/Rikens split - UV partially responsible, but also just not a good design for transferring that torquey power to the boat. Your transom doesn't need to be against your back tube, by the way - you can leave a little space there (inches, and the less the better) and it will help with turning if you're running a short(er) shaft where the powerhead is too low to clear your tube.
No comments on short shafts...
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Old 3 Weeks Ago   #3
 
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Montrose, Colorado
Paddling Since: 2006
Join Date: Nov 2008
Posts: 215
A 5-6 HP motor can produce a lot of force, enough to lift the bow of a loaded 15' boat. I'd be concerned running it only attached to a U on the stern of the boat. We have the stern frame/NRS motor mount on ours. Our motor pulls the whole frame backwards so we use extra straps to the bow d-rings to keep the frame in place.
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Old 3 Weeks Ago   #4
 
Join Date: Feb 2005
Posts: 995
Hi,

Here are two used on my boats over the years.

The triangular type strapped to the frame and rested on the rear tube. It is welded aluminum.

The other one bolted into the rear crossbar of the frame with NRS fittings. The plywood panels held a remote fuel tank and also sometimes were used to strap the motor down when not in use. It was made of galvanized tube I had bent in a muffler shop.

FWIW.

Rich Phillips
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Old 3 Weeks Ago   #5
 
Denver, Colorado
Join Date: Oct 2017
Posts: 8
And what do you use for tiller/throttle extension? Or do you just sit on the stern? Thanks for the pics btw. I'd love to see a pic of the whole setup.
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Old 3 Weeks Ago   #6
 
Join Date: Feb 2005
Posts: 995
This is a trip I took on Powell with my 14' NRS E140. Note the long extension, which I could get away with because on the lake there was little to no need to reach the motor head for long periods of time. On moving water, I sat on the tube adjacent to the motor and ran it directly.

Also, seems I was using a mount that I forgot to mention, which sort of followed the shape of the tubes after being strapped to the rear of the frame.

Hop this helps.

Rich
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Old 3 Weeks Ago   #7
 
Ashland, Oregon
Paddling Since: 1992
Join Date: Sep 2014
Posts: 46
Here's what I cam up with (as long as the picture loads)
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Old 3 Weeks Ago   #8
 
Ashland, Oregon
Paddling Since: 1992
Join Date: Sep 2014
Posts: 46
I'm on a mac - can I just drag stuff to this window? what's the best way to upload a picture? I did manage to start a mountain buzz album under misc. with the title motor mount but can't seem to get it on this thread---Bongo
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