Today's Message Index:
----------------------
1. 12:09 PM - Re: Powerflow exhaust and empty weight (TeamGrumman@aol.com)
2. 12:40 PM - Re: Powerflow exhaust and empty weight (flyv35b)
3. 05:34 PM - Horizontal attach (TeamGrumman@aol.com)
4. 07:26 PM - Re: Horizontal attach (flyv35b)
Message 1
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| Subject: | Re: Powerflow exhaust and empty weight |
--> TeamGrumman-List message posted by: TeamGrumman@aol.com
In a message dated 02/13/04 11:13:22 AM, drychlik@sbcglobal.net writes:
> Three questions for the group. What is the empty weight of your aircraft?
> Second does anyone have some good information about the performance gains with
> the Powerflow exhaust on a Tiger. Has anyone done any cylinder work to
> improve performance?
>
The empty weight on my Cheetah was 1328. It had one Trimble GPS, Argus 300
moving map, one Narco 810R, standard range (38 gal) tanks, NO VOR, no DME, no
audio panel (telex Pro-comm-4 intercom), no ADF, no sound deadening
insulation, no carpet in the baggage area (just a rubber mat), no extra wires,
no
unnecessary wire tie, no steps, buried com antenna, no red flashing beacon (3-point
strobes) and LyCon cylinders. I could true about 140 knots.
I've flown a lot of planes with Powerflow. I've installed 3 (or 4, I
forget) of them. With the exception of the S-bend which points the exhaust through
the cowling and the pipe hanging in the breeze, it's a sweet system. I've
seen pictures of a Powerflow on a Mooney and they keep it in the cowling.
It's actually something I'm looking into on my new cowling. ... that is,
keeping the pipe inside.
Gary
Message 2
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| Subject: | Re: Powerflow exhaust and empty weight |
--> TeamGrumman-List message posted by: "flyv35b" <flyv35b@ashcreekwireless.com>
That's the way it should have been done in the first place. But Power Flow
seemed to think they couldn't do it. I'd question that.
Cliff A&P/IA
----- Original Message -----
From: <TeamGrumman@aol.com>
Subject: Re: TeamGrumman-List: Powerflow exhaust and empty weight
> --> TeamGrumman-List message posted by: TeamGrumman@aol.com
>
>
> In a message dated 02/13/04 11:13:22 AM, drychlik@sbcglobal.net writes:
>
>
> > Three questions for the group. What is the empty weight of your
aircraft?
> > Second does anyone have some good information about the performance
gains with
> > the Powerflow exhaust on a Tiger. Has anyone done any cylinder work to
> > improve performance?
> >
> The empty weight on my Cheetah was 1328. It had one Trimble GPS, Argus
300
> moving map, one Narco 810R, standard range (38 gal) tanks, NO VOR, no DME,
no
> audio panel (telex Pro-comm-4 intercom), no ADF, no sound deadening
> insulation, no carpet in the baggage area (just a rubber mat), no extra
wires, no
> unnecessary wire tie, no steps, buried com antenna, no red flashing beacon
(3-point
> strobes) and LyCon cylinders. I could true about 140 knots.
>
> I've flown a lot of planes with Powerflow. I've installed 3 (or 4, I
> forget) of them. With the exception of the S-bend which points the
exhaust through
> the cowling and the pipe hanging in the breeze, it's a sweet system.
I've
> seen pictures of a Powerflow on a Mooney and they keep it in the cowling.
> It's actually something I'm looking into on my new cowling. ... that
is,
> keeping the pipe inside.
>
> Gary
>
>
Message 3
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| Subject: | Horizontal attach |
--> TeamGrumman-List message posted by: TeamGrumman@aol.com
I just got another Tiger with cracks.
I've looked at this pretty carefully and if you want my opinion (well, even
if you don't) replacing the cracked stiffener with the same part is the WRONG
way to do it. In the first place, there is nothing wrong with the bonded
joints, The stiffener cracked where it's attached to the vertical supports.
I am going to talk to a DER on Monday, or sooner if I can locate one, and
find a way to put a doubler over the crack. It's my opinion that more damage
to
the skin and adjoining structure by replacing the cracked parts (which will
crack again anyway).
Do I hear any yeas, or nays?
Message 4
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| Subject: | Re: Horizontal attach |
--> TeamGrumman-List message posted by: "flyv35b" <flyv35b@ashcreekwireless.com>
I would agree with you Gary. In any kind of riveted joint you wouldn't
think twice about replacing the whole member due to a simple crack. Who
knows, the crack may have been there for hundreds of hours and is going
nowhere. I (personally) think that if it is just a small crack in either the
horizontal or vertical angle, where they join, that easy and satisfactory
solution would be to rivet an L-shaped piece that goes around the corner and
rivets to both angles. Use .040 say and put a nice .5-1.0 in. radius at the
intersection. End of story and crack. I wouldn't even consider this a
major repair and no specific approval is needed (that's my opinion of
course).
Cliff A&P/IA
----- Original Message -----
From: <TeamGrumman@aol.com>
Subject: TeamGrumman-List: Horizontal attach
> --> TeamGrumman-List message posted by: TeamGrumman@aol.com
>
> I just got another Tiger with cracks.
>
> I've looked at this pretty carefully and if you want my opinion (well,
even
> if you don't) replacing the cracked stiffener with the same part is the
WRONG
> way to do it. In the first place, there is nothing wrong with the bonded
> joints, The stiffener cracked where it's attached to the vertical
supports.
>
> I am going to talk to a DER on Monday, or sooner if I can locate one, and
> find a way to put a doubler over the crack. It's my opinion that more
damage to
> the skin and adjoining structure by replacing the cracked parts (which
will
> crack again anyway).
>
> Do I hear any yeas, or nays?
>
>
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