algiecompositeaircraft at Yahoo! Groups

Re: DC brushless fan motor

David Algie — Sun, 06 Jul 2008 05:25:15 GMT

Yes, I would like to not have to have a fan for ground running, but if it could serve two purposes and let me eliminate the other battery that is needed for

Re: DC brushless fan motor

rv6ejguy — Fri, 04 Jul 2008 15:59:44 GMT

Between an electric fuel pump, ignition, ECU and injectors, you are looking at 14-18 amps at cruise rpm. If you have an engine driven high pressure pump, you

Re: DC brushless fan motor

life speed — Wed, 02 Jul 2008 15:53:34 GMT

The OEM controller is probably incorporated into the fan itself. If you can just apply 12V and ground to the fan and it spins it has the motor controller

Re: DC brushless fan motor

David M — Wed, 02 Jul 2008 11:18:42 GMT

I've heard that about 300-350 watts are needed for sustained running of at a big twin and also an opposed 6. David M. ... From: David Algie To:

Re: DC brushless fan motor

David Algie — Wed, 02 Jul 2008 05:02:37 GMT

So it would require adding a motor controller to the basic DC permanent magnet motor power circuit? Also, as you are, I'm guessing that it won't output the

DC brushless fan motor

life speed — Mon, 30 Jun 2008 15:56:31 GMT

It has been a little while since I looked at DC brushless motor controllers (most automotive fans are of this type), but if my memory is correct the motor

Re: {SPAM?} Re: [algiecompositeaircraft] Re: Systems Description pag

David Algie — Sun, 29 Jun 2008 19:10:51 GMT

I was thinking along the lines of using an off the shelf automotive fan, and I have the room to fit it no problem. I just need to figure out if a DC motor's

Re: Air Venture 2008

David Algie — Wed, 25 Jun 2008 02:55:04 GMT

I can predict stall with flaps based on other designs within a few knots, will be under 60 knots I think. Low speed handling is based on wing loading, airfoil

Re: Air Venture 2008

benamyava — Wed, 25 Jun 2008 01:11:49 GMT

Well, today I scheduled a flight in the Lancair Legacy RG demonstrator. I want to learn as much about the type as possible. I am really interested in the

Re: Systems Description page updated

Lawrence Sciortino — Tue, 24 Jun 2008 18:50:39 GMT

Hi David, that's the sort of trick I would expect you to come up with, and reminds me of some of the standby devices that are deployable on large aircraft for

Re: Systems Description page updated

mapratherid — Tue, 24 Jun 2008 17:41:58 GMT

Slick idea. Possibly instead of swinging the fan out of the way you could use braking to stop it from rotating. A stopped fan should present quite low drag

Re: Air Venture 2008

David M — Tue, 24 Jun 2008 14:41:08 GMT

I'd like to know the projected stall speeds and expected low speed handling characteristics. Thanks, David M. ... From: "benamyava" To:

Re: Systems Description page updated

Steve Freitas — Tue, 24 Jun 2008 05:29:02 GMT

... Very clever double-purposing! At first I was thinking about asking for a ram air turbine, but didn't figure you'd give me one, so I left it out of my

Re: Systems Description page updated

David Algie — Tue, 24 Jun 2008 03:50:02 GMT

I'm gonna throw this idea out there, I had a small block powered race car years ago that has an electric radiator fan. I installed a light on the fan switch

Re: Systems Description page updated

Steve Freitas — Tue, 24 Jun 2008 03:14:07 GMT

... Ideally yes, practically no. Only one of my many GM alternator failures has involved a seized pulley. :-) I'd just be pleased to have a second one in there