wayne.e(at)grandecom.net
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 Posted: Sun Mar 08, 2009 3:36 am Post subject: New Hartzell AvailableNew Hartzell Available |
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I thought I would chime in a little here on the 3 bladed prop issue. Robin is correct that some 3 bladed props are very expensive and Michael is correct on the MT. I had a price quote or the MT prop when I was building in 2005, of $7700, I don't know what it is right now. However I ended up buying the Aero Composite prop, which ended up costing me something like $17,000, of which $1600 of that was for custom painting by them.
And Robin is correct that removing the cowling with a 3 bladed prop can be a challenge, or put in RV speak, a pain in the arsh, to not ding the prop or the gear fairings. I had prop covers made so I could protect the prop from dings and then I put tape all over the wheel fairings and pants whenever I take the cowling off so I don't ding them.
I believe that Robin is also correct that the Hartzell may be a little faster than some of the 3 bladed props. There was an unscientific comparison done on this with an MT compared to a Hartzell and then an MT compared to a Aero Composite. It was written up in Vans rag by, I think either Van or Ken Kruger. The problem is and was that there are quite a few variables involved, such as weight of each plane, engine HP etc. What they found in that write up, who knows if it was correct, was that the Hartzell was faster than the MT but not the Aero Composite.
I've flown together with a friend of mine, Ron Grover, several times on trips and he has the Hartzell and I believe his is faster than mine by a little. I'm not sure, because we didn't do a balls to the wall test, but he could usually run at a little lower power setting than me and keep the same speed as me. We have basically the same engine but my plane I think is much heaver than his. When I built mine I wanted it build with certain thing and I figured the weight is whatever it is. In the big scope of things for me a couple of knots speed loss to have the plane the way I want it really doesn't matter that much to me. Based on speeds I've seen posted, I seem to be right in the same area. But as far as the 3 bladed issue, I really like the smoothness of mine. I've had a couple of people that have flown in several 10's comment on how smooth and quite mine is. Again just a personal preference thing I guess. I just like the looks of the 3 bladed prop as well as climb rate and quietness issues.
Wayne Edgerton N602WT
Time: 08:17:01 AM PST US From: "RV Builder (Michael Sausen)" <rvbuilder(at)sausen.net (rvbuilder(at)sausen.net)> Subject: New Hartzell Available
I have to disagree, my new 3 blade MT was under 9k with 14" spinner, asse
mbly, and shipping. You don't pay extra for a 14" spinner with MT. I did
get a bit of a price break because it was one that someone had ordered and
then backed out on but this was only a couple months ago.
Michael
From: owner-rv10-list-server(at)matronics.com (owner-rv10-list-server(at)matronics.com) [mailto:owner-rv10-list-server(at)m
atronics.com] On Behalf Of Robin Marks
Sent: Friday, March 06, 2009 8:10 PM
Subject: RE: New Hartzell Available
Just a point of clarification... The panel image I posted was of Deems' lay
out as Vern thought Deems was using the Avidyne system. I wanted to answer
for Deems as he is otherwise occupied. (I went with the G900X/Dynon Back Up
)
As far as props go... $15,000 is in the ball park when compared with the ot
her 3 blades out there. Throw in a custom paint scheme. Cough, cough (Deems
) and my guess is that all 3 blades are running $15 ish. Unfortunately with
all the equipment out there we still have no, zero, zilch, nada side by si
de comparisons. So how is one to know what is the fastest or best option? M
y choice was $6.5k, two blades and easy cowl removal. Heck most of my frien
ds don't have an airplane so ego still intact. I have a feeling that when a
ll is said & done the BA Hartzell may be the fastest of them all in cruise.
Of note those thinking of the James cowl will need to buy a $1,100+ 14" spi
nner.
My Barrett / Forsling / James Fire Breather "Chunky Monkey" is almost dress
ed (painted)...
Robin
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