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Old Jun 08, 2011, 02:58 PM
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How to install brushless motors


I received my brushless motors today and am not 100% sure how to install them (Optima 400 2220-1200KV Brushless Motor) There are going in a 40" S-Boat.

Thanks for any help you can give me

Bill
Athens Ga.
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Old Jun 08, 2011, 04:27 PM
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I think that we will need a bit more info.
I have no idea what an S boat is. So the hull configuation, the beam, what type of drive. Is the motor an out runner or can type.
Old Jun 08, 2011, 05:04 PM
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They are out riggers

guess what I am asking is how to mount the motors to the hull

Make a L bracket and bolt the motor to it then glue it to the hull

See the start of my build log S 38

Thanks

Bill
Old Jun 08, 2011, 05:53 PM
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Quote:
Originally Posted by cgbillb View Post
I received my brushless motors today and am not 100% sure how to install them (Optima 400 2220-1200KV Brushless Motor) There are going in a 40" S-Boat.

Thanks for any help you can give me

Bill
Athens Ga.
Good job you asked, my first thought on seeing "s boat" was what others would have thought -
http://en.wikipedia.org/wiki/Schnellboot

and that would have wanted three.
Old Jun 08, 2011, 05:56 PM
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Installing motors in a boat is a bit more complex than you might think. Thru hull integrity, that is keep the water out, must be considered. Boats hulls more and a direct shift may not be cool. All I am saying is that we would need to know a lot more about your application to provide real help. I will say making an L bracket and bolting the bracket to the hull is a start but you will want to make to precise location of the motor shaft and coupling adjustable.

Hurricane Larry
Old Jun 08, 2011, 08:02 PM
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Larry

Yes you are right I have build several boats but with the big motors

Brush type, Thats how I did it with them, The brushless mortors seem

small to me.

Thanks for the help

Bill
Old Jun 08, 2011, 08:06 PM
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MFr02

Yes there will be 3 motors,rudders ect.

See the start of my build log of the S 38 in Scale boats

Thanks

Bill

PS making rudders now
Old Jun 09, 2011, 12:23 AM
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Cut a plywood frame to hold the motors, with appropriate holes for the mounting screws and shafts. You can glue the frame into the hull, and reinforce the joint with some fiberglass.
Last edited by CG Bob; Jun 09, 2011 at 12:32 AM.
Old Jun 09, 2011, 04:00 AM
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Outriggers?


Hi Bill, Do I gather correctly that you're using brushless outrunner motors? If that is correct I just converted one of my PT's to brushless using outrunners. The L brackett came to mind and should be a plausible solution however I made a firewall to attach all three motors to. Unlike your brushed or inrunner motor the outrunner is attached from behind instead of being bolted from the front ....alignment is a huge keyword here I hope it works for you Boo
Old Jun 09, 2011, 07:11 AM
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CGBOB and PKBOO

Thank you very much that is what i needed.
I am going to try both ways today,may have some sthing on my build log in the next day or so
Again thanks
Bill
Old Jun 10, 2011, 03:28 AM
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I've taken to mounting mine directly on the shaft, so the out-runner bell is driving the prop shaft, I remove the original motor shaft and use an extended drive shaft.

https://www.rcgroups.com/forums/show...7&postcount=36

The motor has to be balanced as any vibration transfers to the hull. the top bearing of the shaft is removed and the motor bearings become the top bearing.

Of course they can be mounted the same as a traditional brushed motor.

Nick
Old Jun 10, 2011, 05:54 AM
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Nick
thanks for the pictures on your build do you have any history on her?

This is what I came up with,just a test when I get the tubes installed will refine it

Again thanks

Bill
Old Jun 10, 2011, 08:25 AM
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Nice!


"Cool" setup indeed on you're single post Nick...a lot less of the lesser things to deal with. Boo
Old Jun 10, 2011, 05:42 PM
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Keep us informed as how it works out. Brushless motors are here to stay and scale boats will eventually switch. I have only one boat and I used a 2S Lipo battery I had. It works fine but I had to add ballast to make up for the weight of the lead acid batteries normally used. What motors are you using?
Old Jun 10, 2011, 06:16 PM
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Islewis

GO to scale boats and you will see my build log S 38

Working on my radio F-14 now

I think the brushless motors are the way to go

Thanks

Bill


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