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Rotax 912 vr 965-347

 
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docyukon(at)ptcnet.net
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PostPosted: Sat Feb 10, 2007 10:16 am    Post subject: Rotax 912 vr 965-347 Reply with quote

Has anyone found an acceptable substatute, rectafier regulator, for
the 912-914 rotax? Better? cheaper? Doc


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nuckollsr(at)cox.net
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PostPosted: Sat Feb 10, 2007 10:31 am    Post subject: Rotax 912 vr 965-347 Reply with quote

At 12:15 PM 2/10/2007 -0600, you wrote:

Quote:

<docyukon(at)ptcnet.net>

Has anyone found an acceptable substatute, rectafier regulator,
for the 912-914 rotax? Better? cheaper? Doc


There was a product offered some years ago that was popular with
the ultra-light crowd but I don't recall the name off hand. Anyone
else remember?

A modern, processor controlled regulator/rectifier for PM alternators is
on my list of things to do when the drive stand is up and runnning.
Bob . . .

----------------------------------------
( IF one aspires to be "world class", )
( what ever you do must be exercised )
( EVERY day . . . )
( R. L. Nuckolls III )
----------------------------------------


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N6030X(at)DaveMorris.com
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PostPosted: Sat Feb 10, 2007 11:05 am    Post subject: Rotax 912 vr 965-347 Reply with quote

The Corvair guys are using the John Deere dynamo and regulator
http://www.davemorris.com/Photos/Dragonfly%20Electrical/JohnDeereDynamo.jpg
http://www.davemorris.com/Photos/Dragonfly%20Electrical/IMG_0658.jpg

Dave Morris

At 12:30 PM 2/10/2007, you wrote:
Quote:

<nuckollsr(at)cox.net>

At 12:15 PM 2/10/2007 -0600, you wrote:

>
><docyukon(at)ptcnet.net>
>
> Has anyone found an acceptable substatute, rectafier
> regulator, for the 912-914 rotax? Better? cheaper? Doc
There was a product offered some years ago that was popular with
the ultra-light crowd but I don't recall the name off hand. Anyone
else remember?

A modern, processor controlled regulator/rectifier for PM alternators is
on my list of things to do when the drive stand is up and runnning.
Bob . . .

----------------------------------------
( IF one aspires to be "world class", )
( what ever you do must be exercised )
( EVERY day . . . )
( R. L. Nuckolls III )
----------------------------------------



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nuckollsr(at)cox.net
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PostPosted: Sat Feb 10, 2007 11:39 am    Post subject: Rotax 912 vr 965-347 Reply with quote

At 01:03 PM 2/10/2007 -0600, you wrote:

Quote:


The Corvair guys are using the John Deere dynamo and regulator
http://www.davemorris.com/Photos/Dragonfly%20Electrical/JohnDeereDynamo.jpg
http://www.davemorris.com/Photos/Dragonfly%20Electrical/IMG_0658.jpg

Dave Morris

Thank you sir!

Hmmm . . . interesting pulley ratios . . . wonder how much
snort they get out of this thing a ramp idle and taxi speeds.
Of course, the smaller pulley ratio reduces stress on the
regulator at cruise. I suspect there's an opportunity for some
system performance optimization here.

Bob . . .
----------------------------------------
( IF one aspires to be "world class", )
( what ever you do must be exercised )
( EVERY day . . . )
( R. L. Nuckolls III )
----------------------------------------


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N6030X(at)DaveMorris.com
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PostPosted: Sat Feb 10, 2007 12:35 pm    Post subject: Rotax 912 vr 965-347 Reply with quote

Yes, you'll note the dynamo has a new pulley welded onto
it. Different builders are trying different pulley sizes to make the
dynamo generate sufficient power at idle while taxiing, or to keep
the beast under control in cruise flight. Unfortunately the downside
of using a generator instead of an alternator I guess. Total price
for dynamo and regulator is under 300 bucks, and results in very
light weight. The usual caveats apply: tell them you need it for
your TRACTOR, and don't use the "a" word.
Part numbers and other stuff:
http://home.hiwaay.net/~langford/corvair/dynamo.html

Dave Morris

At 01:38 PM 2/10/2007, you wrote:
Quote:

<nuckollsr(at)cox.net>

At 01:03 PM 2/10/2007 -0600, you wrote:

>
>
>The Corvair guys are using the John Deere dynamo and regulator
>http://www.davemorris.com/Photos/Dragonfly%20Electrical/JohnDeereDynamo.jpg
>http://www.davemorris.com/Photos/Dragonfly%20Electrical/IMG_0658.jpg
>
>Dave Morris

Thank you sir!

Hmmm . . . interesting pulley ratios . . . wonder how much
snort they get out of this thing a ramp idle and taxi speeds.
Of course, the smaller pulley ratio reduces stress on the
regulator at cruise. I suspect there's an opportunity for some
system performance optimization here.

Bob . . .
----------------------------------------
( IF one aspires to be "world class", )
( what ever you do must be exercised )
( EVERY day . . . )
( R. L. Nuckolls III )
----------------------------------------



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Bill Denton



Joined: 10 Jan 2006
Posts: 97
Location: Chicago, IL USA

PostPosted: Sat Feb 10, 2007 2:05 pm    Post subject: Rotax 912 vr 965-347 Reply with quote

Could it have been the Key West regulator?

Lockwood, Leading Edge, and others offer them.

You see them a lot on ultralights with 447/503/582's...

--


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nuckollsr(at)cox.net
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PostPosted: Sat Feb 10, 2007 2:28 pm    Post subject: Rotax 912 vr 965-347 Reply with quote

At 04:04 PM 2/10/2007 -0600, you wrote:

Quote:


Could it have been the Key West regulator?

Lockwood, Leading Edge, and others offer them.

You see them a lot on ultralights with 447/503/582's...

Hmmm . . . those engines have those alternators
that want to grow up and be a 'real' alternators one
day.

I suspect the John Deere is the more robust of the
PM regulators. As soon as I can spin the hardware,
I'll find out how beefy it really is.

Bob . . .


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jindoguy(at)gmail.com
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PostPosted: Sun Feb 11, 2007 6:12 am    Post subject: Rotax 912 vr 965-347 Reply with quote

As far as inexpensive regulators for a PM alternator go, Harley Davidson has used a PM alternator for years and the regulators are available in the after market from Accel, among others. Haven't tried one except in the original application, but they are usually under $50.

Rick

On 2/10/07, Robert L. Nuckolls, III <nuckollsr(at)cox.net (nuckollsr(at)cox.net)> wrote:[quote] --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr(at)cox.net (nuckollsr(at)cox.net)>

At 04:04 PM 2/10/2007 -0600, you wrote:

Quote:
--> AeroElectric-List message posted by: "Bill Denton" < bdenton(at)bdenton.com (bdenton(at)bdenton.com)>

Could it have been the Key West regulator?

Lockwood, Leading Edge, and others offer them.

You see them a lot on ultralights with 447/503/582's...

Hmmm . . . those engines have those alternators
that want to grow up and be a 'real' alternators one
day.

I suspect the John Deere is the more robust of the
PM regulators. As soon as I can spin the hardware,
"Ya'll drop on in"
takes on a whole new meaning
when you live at the airport. [quote][b]


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