Today's Message Index:
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1. 10:08 AM - Re: Plane Power (teamgrumman@aol.com)
2. 10:25 AM - Re: Plane Power (teamgrumman@aol.com)
3. 02:18 PM - Re: Plane Power (flyv35b)
Message 1
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Hi Cliff, and Teammates,
The new PP alternators do have a shallower pulley and different spacers.
They did move the alternator forward to address the problem. HOWEVER, th
ey kept the same part numbers on the alternators so there is NO WAY OF KNO
WING WHICH IS RIGHT!
As for the baffle trick, that's how the baffles work on my Jaguar Cowling.
I had to do climb cooling tests with probes on the alternator. The alte
rnator with the stock cowling runs roughly ambient. I have a blast tube
from the cabin heat inlet to the alternator and the alternator runs about
100 degrees under most conditions. There is very little temperature chan
ge. I thought about running an alternator with the cooling shroud and 1"
hose blowing air, but, the FAA seemed happy with the tests. By-the-way,
my alternator, a Kelly rebuilt, has been on my plane for 5 years and no
problems.
-----Original Message-----
From: flyv35b <flyv35b@minetfiber.com>
Sent: Sat, Jan 23, 2010 7:49 am
Subject: Re: TeamGrumman-List: Plane Power
It sounds like several people have had problems with spacers and pulley al
ignment (who knows how many actually). On the first one I installed on a
Tiger the field terminal was nearly touching the front baffle. I didn't
see why they couldn't have designed the pulley a bit different and moved
the alternator forward even a half inch for better clearance and easier
access to the terminal. For that matter the whole front baffle design on
the Tiger and Cheetah suck! By making a baffle up over the top of the ca
se and sealing to the nose bowl you could eliminate the lower front baffle
and then you would have access to the alternator from behind WITHOUT taki
ng off the nose bowl. In fact you might be able to check the wires on the
alternator just by looking in with the top cowling open!
Cliff
----- Original Message -----
From: teamgrumman@aol.com
Sent: Friday, January 22, 2010 5:18 PM
Subject: TeamGrumman-List: Plane Power
Ya know, some companies are a real pleasure to work with. These compani
es don't ask questions when there is a problem. LightSpeed for example.
Bose. But, then there are companies that take each and every problem
as a personal affront and make it so impossible to work with that somet
imes I have to wonder how they stay in business.
A couple of years ago, I attempted to install a PP alternator on a 2004
AG5B. The pulley was misaligned by about 1/8 inch. This was my first
install of a PP alternator and figured that something must be wrong on
my end. When I called PP and gave them the serial number, I was told
that I had an alternator when had been manufactured prior to a redesign
of the spacer and that I needed the new spacer. No, the part number wa
sn't changed because it was a minor change. OK. Send me the spacer.
I have an airplane-on-the-ground. So, they agreed to replace the spa
cer at my expense.
Since then, I have done 9 installs of PP alternators; 3 of which have a
persistent whine in them. Running extra grounds and cleaning up termina
l ends have not helped. Oddly, removing and replacing one of the alte
rnators made the noise go away. This was on a plane on which I had NOT
installed an extra ground or cleaned up the terminal ends. I removed
the alternator to fix a problem with the baffle.
OK, so, last year, I ordered a new PP alternator for a Cheetah I was res
toring and decided to order an extra one for 'bench stock' just in case
someone needed one. Well, wouldn't ya know it, about a year later, a fe
w days ago, I needed to use that alternator. Come to fine out, this one
too has either the wrong spacers or wrong pulley or both. At any rate,
it wouldn't fit; the pulley's are misaligned by 1/4 inch or more. So
I called PP.
I talked to a really nice man who helped what he could and he passed me
to another guy who basically said I was installing it wrong. When I tol
d him I had installed several without any problem he told me, "we've cha
nged the design (without changing the part number) so the alternator sat
further forward to clear the baffle." I said, "Well, I must have one
that wasn't updated so I need to send it back so I can have one that wi
ll fit." Then, I was told to take pictures of the alternator so they ca
n determine if I was doing anything wrong. I said, "If I give you the
part number and serial number won't you be able to tell if there is a
problem with the pulley?" No. Apparently not. I was told they NOTHIN
G leaves PP without being checked for accuracy and it probably has the
parts it was supposed to be shipped with. Then I was told to get all
the part numbers for the brackets, spacers, and pulley. I said, "Can't
I just send it back and you can fix it so I have an alternator to use
incase someone needs one?" Well, no.
I was not issued an RMA (returned merchandise authorization) because I
didn't have the serial number handy.
I'm on my way to the airport to get the serial number, take pictures, and
write down part numbers.
href="http://www.matronics.com/Navigator?TeamGrumman-List">http://www.ma
tronics.com/Navigator?TeamGrumman-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
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Message 2
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Ned, is the check in the mail?
-----Original Message-----
From: Ned Thomas <923te@att.net>
Sent: Sat, Jan 23, 2010 9:13 am
Subject: Re: TeamGrumman-List: Plane Power
I agree Cliff. One of the advantages of Gary's new cowling is that it does
what your saying.
Can't wait until I get one on my Tiger!
Ned
Sent from my iPhone
For that matter the whole front baffle design on the Tiger and Cheetah
suck! By making a baffle up over the top of the case and sealing to the
nose bowl you could eliminate the lower front baffle and then you would
have access to the alternator from behind WITHOUT taking off the nose bow
l. In fact you might be able to check the wires on the alternator just by
looking in with the top cowling open!
Cliffy
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Message 3
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The new PP alternators do have a shallower pulley and different spacers.
They did move the alternator forward to address the problem. HOWEVER,
they kept the same part numbers on the alternators so there is NO WAY OF
KNOWING WHICH IS RIGHT!
Well, that was a mistake. I'm surprised the FAA let them get away with
that sort of thing, beings it's PMA's and all. They probably didn't
tell the FAA, just changed their drawings because it was the easy way
out!
Cliff
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