REFLECTOR: Franklin Alternator

Tue Nov 10 16:46:23 CST 2009

Larry,

I that 180#'s naked so I can get the whole picture.

Rene'

From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Laurence Coen
Sent: Tuesday, November 10, 2009 12:23 PM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Franklin Alternator

Mike,

Our planes must be pretty close.  I weigh 180# and if I do a W&B with 75# at
the co-pilot position my CG is 119.8.  I fly solo with no weight added up
front and am still within the CG envelope.  This puts me close to the aft CG
but not beyond.  The advantage is that I get reduced ground roll on
take-off.

My battery is an Optima spiral cell, 65 Amp/hr, 45 pound monster (CG
helper).  It too spins the prop real lively.

Larry Coen

N136LC

From: Michael <mailto:mikewatsspg at gmail.com>  Watson 

Sent: Tuesday, November 10, 2009 10:22 AM

To: Velocity <mailto:reflector at tvbf.org>  Aircraft Owners and Builders list 

Subject: Re: REFLECTOR: Franklin Alternator

Larry,

I'm really not that close. Flying alone, and with 75 lbs. in three leather
bags of
shotgun lead (25 lbs each) under the co-pilot seat, my cg is 119.5. My
airframe
was built very light, the problem is the weight of the Franklin engine and
accessories
back there. It's a good thing that the IVO prop is very light.

Yesterday, I replaced my concord battery with a Odyssey PC 1200 mj so that
added 4 lbs to the arm at 28 inches. The Odyssey spun the engine so fast I 
thought it was idling.

On Mon, Nov 9, 2009 at 10:33 PM, Laurence Coen <lwcoen at hotmail.com> wrote:

Mike,

I ran a W&B and 4# at the alternator arm moved the CG 0.1" aft.  If you're
that close don't ever fly naked.

Larry Coen

N136LC

From: Michael Watson <mailto:mikewatsspg at gmail.com>  

Sent: Monday, November 09, 2009 2:30 PM

To: Velocity <mailto:reflector at tvbf.org>  Aircraft Owners and Builders list 

Subject: Re: REFLECTOR: Franklin Alternator

Thanks John,

I got an 70 amp Mitsubishi alternator out of a late model Honda, it fits
perfectly but it's 4 lbs
heaver than the one have. My CG is too far aft as it is, I hate to add more
weight back there.
Was looking for a lighter alternative.

BTW: a couple of years ago, I remember you made a post asking if you reduced
the space between the top of your arm pit scoop and the wing from 1 inch to
1/2
inch, if it would pump more air into the plenum.

Did you reduce the area and did it reduce your CHT's ???

On Mon, Nov 9, 2009 at 2:51 PM, <aminetech at bluefrog.com> wrote:

Mike,

Mine is belt driven.  Seems like it shouldn't be hard to find one that fits.

John 

--- mikewatsspg at gmail.com wrote:

From: Michael Watson <mikewatsspg at gmail.com>

To: Reflector <reflector at tvbf.org>
Subject: REFLECTOR: Franklin Alternator
Date: Mon, 9 Nov 2009 14:36:37 -0500 

Posted this before but go no replies, thought I'd post again.

My engine was purchased from Atlas Motors and came with a 35A
alternator. Now that I have installed dual GRT HX EFIS, the little
alternator is just not up to the task. 

B&C Dose not make an alternator to fit the Franklin. 
Which alternator are you Franklin drivers using.

PS. 60 ~ 70 Amps. 

-- 
Mike W.
1997 Velocity Elite RG
Franklin /IVO Electric CS
Dual GRT EFIS HX Synthetic Vision

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-- 
Mike W.
1997 Velocity Elite RG
Franklin /IVO Electric CS
Dual GRT EFIS HX Synthetic Vision

  _____  

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-- 
Mike W.
1997 Velocity Elite RG
Franklin /IVO Electric CS
Dual GRT EFIS HX Synthetic Vision

  _____  

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