Today's Message Index:
----------------------
1. 08:54 AM - Re: McCauley Props (Bob & Toodie Marshall)
2. 08:54 AM - Hartzel props (Jim Stone)
3. 10:52 AM - Re: Hartzel props (Hr2pilot@aol.com)
4. 11:24 AM - Re: McCauley Props (LesDrag@aol.com)
5. 04:48 PM - I made a donation & I'm registering as a Marrow donor (C. Rabaut)
6. 05:05 PM - Re: I made a donation & I'm registering as a Marrow donor (Ernest Hale)
Message 1
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| Subject: | Re: McCauley Props |
--> Rocket-List message posted by: "Bob & Toodie Marshall" <rtmarshall@osb.net>
Jim, You state no restrictions for the prop, what about the crankshaft on
the engine or does the prop extension go away and we end up with a short
fuse instead of a rocket? (;-)) Thanks for your reply. Bob N#999RM.
----- Original Message -----
From: <LesDrag@aol.com>
Subject: Re: Rocket-List: McCauley Props
> --> Rocket-List message posted by: LesDrag@aol.com
>
> Perfect propeller?
>
> Kirby Chambliss was using a Hartzell composite propeller (about $35k) on
his
> Edge 540. Then he changed to the MT Propeller counterweighted blade
aerobatic
> propeller.
>
> For the F-1 Rocket or Harmon Rocket 2:
>
> 3 blade MT Propeller. MTV-9-B/198-52
> No aerobatic restrictions. No life limit on any components. 3 blade MT
> Propeller/spinner weighs 12 pounds less than a "J" 2 blade Hartzell
> propeller/spinner. Exceptionally smooth. Equivalent performance to the
Hartzell 2 blade
> propeller.
>
> MT Propeller counterweighted propeller (High pitch (Low RPM) with low oil
> pressure) also available. Recommended for aerobatics where momentary oil
> pressure loss is probable. (Same blades & same performance.)
>
> However, this probably isn't an unbiased comparison. :-)
>
> Jim Ayers
> HR2 OEM Distributor for MT Propeller.
>
>
Message 2
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--> Rocket-List message posted by: "Jim Stone" <jrstone@insightbb.com>
Just got some good news and wanted to pass it along.
I spoke to management at Hartzel and among many questions, I asked about
the rumor I keep hearing about the 4 g limit on the Hartzel prop on the
Rockets. He said that it is not a propeller limit but more of a
crankshaft concern (I think he called it the prop flange). He further
stated that since it is part of the engine, he cannot comment further
since "they don't make engines." Bottom line, it is not the prop
driving the rumor. Anyone know if it is really an engine
problem/weakness? John Harmon, can you shed some light on this?
Thanks
Jim
Message 3
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| Subject: | Re: Hartzel props |
--> Rocket-List message posted by: Hr2pilot@aol.com
Way on earth do you want to pull more than 4 gs?
We did the G testing to 6+ and no problems, there are Rockets out there that
rutenly hit
5-6 Gs and more and not lost the crank.
John
Message 4
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| Subject: | Re: McCauley Props |
--> Rocket-List message posted by: LesDrag@aol.com
Hi Bob and All,
The HR2 cowl ring is mounted 3" ahead of the front face of the ring gear.
This didn't change.
I don't know where the F-1 Rocket mounts the cowl. However, the same MT
Propeller and spinner is recommended for both. So it should be the same.
I just talked with Hartzell.
The earlier IO-540 engines had a thinner flange (0.38" thick) with holes, and
it had some restrictions.
The current crankshaft flange is 0.44" thick without extra holes drilled in
the flange. There are no restrictions by Lycoming for this propeller flange.
Unfortunately, this doesn't clarify what Hartzell said from Jim Stone's
Email: "He said that it is not a propeller limit but more of a crankshaft concern
(I think he called it the prop flange)."
Unless I hear something different from MT Propeller, I would have to go with
the practical experience of Kirby Chambliss with his MT Propeller on an IO-540
engine. I believe he pulls over 6 G's, normally.
There is no G limit on the MT Propeller and Lycoming IO-540 engine.
If you really have to push the limits, the maximum G limit will be limited by
you, or the airframe. Whichever fails first.
Personally, when I'm flying, I have to limit the airframe to 4 G's. Since I
end up stressing the average 170 pound pilots seat structure to an equivalent
6 G's. (This really hurts the climb performance on my RV-3.) :-(
Jim Ayers
Message 5
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<rv4-list@matronics.com>, <rv3-list@matronics.com>,
<rocket-list@matronics.com>,
"<aerobatic-list@matronics.com>"
<rv7-list@matronics.com>,
<rv6-list@matronics.com>
| Subject: | I made a donation & I'm registering as a Marrow donor |
--> Rocket-List message posted by: "C. Rabaut" <crabaut@coalinga.com>
Okay Guys (and Gals),
Donating was the EASY part (you can do it too, it will only hurt when my wife
aka "my banker" finds out). I also did some soul searching, cuz' it's gonna
take a lot of time & traveling, but I decided I'm gonna be tested as a donor.
I just registered and now I wait to get an appointment to be tested. I gotta
go up to Stanford Medical Center (it's the closest donor center to me) and
I'll let you all know how it goes.
I hope some other folks will consider taking the plunge, either donating $
or becoming a blood/marrow donor or both... ya'll know it's for good/deserving
people.
check out
http://www.marrow.org/HELP/join_the_registry.html
or
www.transplants.org
Take Care and Take Air my friends,
Chuck
Message 6
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| Subject: | I made a donation & I'm registering as a Marrow donor |
--> Rocket-List message posted by: "Ernest Hale" <ehale@cheyenne-enviro.com>
I am going to join, it is a great cause and something I have been
meaning to do for the last 6 months. Thanks for reminding me of one of
the things I am supposed to do in 2004.
-----Original Message-----
From: owner-rocket-list-server@matronics.com
[mailto:owner-rocket-list-server@matronics.com] On Behalf Of C. Rabaut
rv4-list@matronics.com; rv3-list@matronics.com;
rocket-list@matronics.com; <aerobatic-list@matronics.com>;
rv6-list@matronics.com
Subject: Rocket-List: I made a donation & I'm registering as a Marrow
donor
--> Rocket-List message posted by: "C. Rabaut" <crabaut@coalinga.com>
Okay Guys (and Gals),
Donating was the EASY part (you can do it too, it will only hurt
when my wife aka "my banker" finds out). I also did some soul
searching, cuz' it's gonna take a lot of time & traveling, but I decided
I'm gonna be tested as a donor. I just registered and now I wait to
get an appointment to be tested. I gotta go up to Stanford Medical
Center (it's the closest donor center to me) and I'll let you all know
how it goes.
I hope some other folks will consider taking the plunge, either
donating $ or becoming a blood/marrow donor or both... ya'll know it's
for good/deserving people.
check out
http://www.marrow.org/HELP/join_the_registry.html
or
www.transplants.org
Take Care and Take Air my friends,
Chuck
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