props

[Dale Kopff]

----- Original Message -----
From: <Legeorgen@aol.com>
To: <murphy-rebel@dcsol.com>
Sent: Tuesday, November 11, 2003 8:52 PM
Subject: Re: props

Dale,

How interesting about your Prince prop out performing the Sensenich. The
22lb. not hanging way out front of the C&G is enough of a plus on its own!

Have

any more detail on the specs? I suppose the only real draw back would be

its use

on a float plane, being wood and composite. tell use more.

Bruce

Bruce, I have leading edge protection and with a cabon fiber finish, there
is no problems being on floats.

The Sensenich with spacer and hardware 38 lbs, Prince 13 lbs with the same
spacer and hardware. I used a spacer made by Saber which is compatable with
both ;props.
Static thrust, Sensnich 450 lbs @2400rpm, Prince 505lbs @2300rpm.
The Prince prop averaged 70 fpm rate of climb better than the Sensenich.
Full power both indicated 115 @ 2600 rpm.

Additional information can be had by e-mail, "propellers@aol.com.
Dale
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[Angus McKenzie]

Hi everybody, summer greetings!

I've been running a McCauley 74X56 (now re-pitched 54") that was on my 0-320-A2B on the Champion GCBC it came from.

Built the engine up to 160+hp; the prop worked great at 56" on wheels and then I went on MAM amphibs, after trying a friends' 74X52 I had the 56" re-pitched to 54". Works quite well.

Off the water in fairly quick times at gross+ and cruises at 80kts IAS at 2400rpm.

Max static rpm is 2400 and max level flight rpm is 2550.

Not getting to the 2700rpm where all the horsepower lives. Possibly a bit over-propped.

So, to complicate the equation I bought an 80X40 Borer (McCauley) off a 150hp Champion GCBC.
I intend to install this prop as-is and verify performance but I'm expecting to need to re-pitch to about 43". Oh', as well, there was a 2" McCauley spacer came with the prop if anybody needs one let me know.

Has anyone else tried a Borer? Results? Numbers? Advice? I know that "rule-of-thumb" is: 1" of pitch = 100rpm

As an aside to this I heard today from Carm Titus that his cousin Mike Titus (longtime Leavens employee who has helped many of us Rebel types with our engines) was working on a plane at Brampton in recent weeks and momentarily distracted by a bystander got hit in the head by a prop blade. Carm said Mike is going to lose one eye. You can't be too careful.

Thanks and best regards to everyone, Angus



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[Dennis Finley]

Hi All
Has anyone out their ever switch from a sensenich prop to a cato
prop,and if they have was it on floats,what did they think,I'm getting
close to buying my O-375 lycoming 215 HP
and i was thinking of going to the cato 3blade 78 inch that the
people at cato recommended it was 20 lbs lighter. with the hollow
crank,Eci cylinders and prop i can loose 30-35 lbs up front and gain
35 HP.






Dennis Finley

Elite amphib C-FDYF



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[mike jones]

Hi all



I have a line on a prop for my 160 hp Lycoming, its a sensenich model
74dm6-0-60, may have come off a pa-140 owner says



Does anyone know if this would work on my setup, assume pitch is 60, way to
much but perhaps it can be repitched



I don't know much about props so any help would be nice



cheers





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[Ralph Baker]

Mike,
I believe Sensenich will repitch a metal prop a total of 4 inches over its life. You might want to confirm that with them and review the prop log to see if any of that 4' has been used up.
Ralph Baker



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[craig]

Yes, I got the HTML thing right after I sent the second email from work.

Here's the question: A friend asked me why no one puts a borer prop or a longer one on the rebel or elite. I didn't know why. I know the 180 hp cubs and such are using longer ones. CW



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