Today's Message Index:
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1. 05:11 AM - Re: Re: Noise (Chris Schuermann)
2. 09:14 AM - Re: accumulator (Scott Dickey)
3. 10:45 PM - N50 (YOURTCFG@aol.com)
Message 1
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--> Commander-List message posted by: Chris Schuermann <cschuerm@cox.net>
RnJThompson@aol.com wrote:
> ANYBODY KNOW HOW TO SHUT A PAIR GSOs UP?
Howdy Richard. Good to hear from ya!
I think this is a really good question.
The early piper aztecs had augmenter tubes, but they have a perforated
liner with some sort of fiber material between the inner and outter
liners. That difference eliminates an amazing amount of noise. I
wouldn't be surprised if you couldn't just slide a pair of aztec tubes
right into place on a commander for an easy test. Beyond that, you're
going to have to add a muffler. That's going to be a little tricky to
do without screwing up the cooling of the engine. I'd imagine that
you'll need to combine three into one, then put the muffler across and
exit into the opposite augmenter tube.
Havn't tried that though :)
Good luck!
Chris
Message 2
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--> Commander-List message posted by: "Scott Dickey" <jdickey@radictech.com>
Hi Al,
If you are referring to your hydraulic accumulator, then you have a couple
options. I know all this because I just pulled mine and am waiting for an
exchange unit as we speak.
First, you have to make sure you really need a true overhaul because that
will run about $2500. Most accumulator failures are due to the main o ring
seal on the piston wearing out or the bore of the cylinder itself wearing or
both. In my case, the accumulator leaked nitrogen in to the hydraulic system
so I knew the seal was gone. When I pulled it and removed the cylinder part
(the round part where the nitrogen goes) the o ring was shot but the bore
itself was scored and worn through the anodizing. That means overhaul. There
is only one place that has an FAA approved process to recoat the cylinder
and bring it back to new dimensions. They also reseal the rest of it and
test it. Call Bob Thormer at Higher Planes - (936) 494-1717. There is a
Higher Planes overhauled unit on the shelf at Byerly Aviation. Call Ken in
parts.
If the cylinder bore looks good and there is no scoring, you can just
replace the o ring and give that a shot. Chances are it will work OK for a
while. The only problem is that it takes about 8 hours to R&R the
accumulator so if you do it twice you just paid for some of the overhaul.
Give me a call at 408 425 4393 and I can give you more details. Good luck.
Regards,
Scott
Message 3
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--> Commander-List message posted by: YOURTCFG@aol.com
HI KIDS...
I just had a nice conversation with Ken from the FAA. No, really, it was a
nice talk. It seems that the FAA is still operating a 680E in their fleet!
Yep, N50 was purchased new by the feds and is still in their stable. It has
about 7000 TT and is flown about 150 hr. each year. It is currently assigned
to a project and flies daily.
The FAA called because they want to install Cleveland brakes on the
airplane and don't want the dual caliper style. Cleveland and TCAC sent them
to
the TCFG and I will be forwarding the paperwork. Pretty cool stuff.
Also, I apologize for the lateness of the last newsletter. The next
one, July, will be in the mail in a week or so and I think everyone will really
enjoy it. That will put me back on track. There is a great story by Buddy
Plaster about the restoration of his drop dead 560E, new everything!! Also,
Wing Commander Gordon has a piece on the operation of the hydtahaulic system
and emergency procedures for the flat nacelled airplanes. I wrote a companion
piece for the bath tub models. "Sir" Barry Colman has a gerat historc
article. Lots of other stuff.
Next issue (Sept) will have a great article on the better than new
restoration of a 500A form Commander Aero. Hope all of you are planning to attend
the flyin, it is already the best response for this early, should be an
absolute ball!! Hope all is well in your Commanderland. jb
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