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Jun 08, 2011, 01:58 PM
Registered User
cgbillb's Avatar
Discussion

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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Jun 08, 2011, 03:27 PM
GILL
GILL RC's Avatar
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.
Jun 08, 2011, 04:04 PM
Registered User
cgbillb's Avatar
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
Jun 08, 2011, 04:53 PM
Registered User
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.
Jun 08, 2011, 04:56 PM
Stilwell Shipyard
lslewis's Avatar
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
Jun 08, 2011, 07:02 PM
Registered User
cgbillb's Avatar
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
Jun 08, 2011, 07:06 PM
Registered User
cgbillb's Avatar
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
Jun 08, 2011, 11:23 PM
KC8WPF
CG Bob's Avatar
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 08, 2011 at 11:32 PM.
Jun 09, 2011, 03:00 AM
Is life for real?
pkboo's Avatar

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
Jun 09, 2011, 06:11 AM
Registered User
cgbillb's Avatar
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
Jun 10, 2011, 02:28 AM
NeverAgainVolunteerYourse lf
nick_75au's Avatar
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
Jun 10, 2011, 04:54 AM
Registered User
cgbillb's Avatar
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
Jun 10, 2011, 07:25 AM
Is life for real?
pkboo's Avatar

Nice!


"Cool" setup indeed on you're single post Nick...a lot less of the lesser things to deal with. Boo
Jun 10, 2011, 04:42 PM
Stilwell Shipyard
lslewis's Avatar
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?
Jun 10, 2011, 05:16 PM
Registered User
cgbillb's Avatar
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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