Subject: [harryproa] brushless electric drive, some links
From: sigurd grung
Date: 4/4/2008, 10:56 AM
To: harryproa@au.groups.yahoo.com
Reply-to:
harryproa@yahoogroups.com.au

hello, you'd want a smallish drive if you're going to put it all under water.

This is a small ~4kW (if you can cool it) brushless: TM685 at www.torcman.de
about 80mm dia IIRC and 4k-7k RPM@peak power
Here is an outboard using that motor, 2-2.5kW max: www.torqeedo.com
It uses a copper alloy stator holder and an alu house. I wanted to try improving the power by use of heat pipes - but maybe it makes more sense to make a longer motor.

planetary gears www.imsgear.com

There are a few homebrew controllers for "large" BLDC motors, spawned from the RC world.

IMO the neatest would be a horiz. foil on each rudder and have them flap up and down for propulsion. But a propeller would probably also do the job so best of luck with the ruddermounted drive.

__________________________________________________________
You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost.
http://tc.deals.yahoo.com/tc/blockbuster/text5.com

__._,_.___
Y!7 Toolbar

Get it Free!

easy 1-click access

to your groups.

Yahoo!7 Groups

Start a group

in 3 easy steps.

Connect with others.

.

__,_._,___