Today's Message Index:
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1. 09:33 AM - Re: propeller optimization (dmac11@telus.net)
2. 09:44 AM - Re: propeller optimization (Dwayne)
Message 1
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| Subject: | propeller optimization |
Hello Jerry,
Perhaps you are right. The blades on my air master 308 are from lockwood and
were warp drive blades that were installed in the airmaster hub. Are they
different from the blades supplied from airmaster? Perhaps all the blades
supplied by airmaster have the "constant speed blade planform" I don't know. It
is a $55 per blade option.
Rotec in vernon has told me there is no probem using the 912 gears on the
914, my question was is it really worth any performace advantage? It would be
interesting to know that before changing gears of course.
Did you remove your engine from the plane and take it to Vernon or just the
gear drive?
I would like to see a photo of your plane if you have one handy,is the panel
all electric or has it a vac pump? Mine is all electric. It was a nice surprise
meeting you, because I knew of your name from the internet.
Are you up and flying now? me to much work going on but come july and august
will be free.
Have a great day, Dwayne
Quoting Jerry Rehn <rehn@rockisland.com>:
> Dwayne
>
>
>
> I would talk to the folks at Airmaster; they did extensive testing for their
> prop using the Europa as the test platform! They seem like pretty smart
> folks and worked with Warp Drive during the development. The Mono wheel may
> have some blade length compromises due to the ground clearance but I don't
> know. I don't think Rotax would recommend switching gears around between 912
> and 914. I sure like my Airmaster, its worked great for 6 years.
>
>
>
> Jerry
>
>
>
> _____
>
> From: owner-europa-list-server@matronics.com
> [mailto:owner-europa-list-server@matronics.com] On Behalf Of Dwayne
> McAllister
> Sent: Friday, May 25, 2007 11:32 AM
> To: Europa-List@matronics.com
> Subject: Europa-List: propeller optimization
>
>
>
> I spoke with a gent at Warp Drive who explained that with the short blade's
> used on the europa, the blade pitch angle needed for higher speeds can be
> greater than optimal causing turbulance near the tips.
>
> He told me they can modify the blade near the tips to alleviate this problem
> and pick up 5 or 10 kts. He also said it would be better for the europa if
> one used the 912 gear ratio (2.27:1) rather than the 914( 2.43:1).
>
> Has anyone tried the constantspeed blade planeform from Warp Drive? or used
> the 912 gear ratio on the 914? if so was performance improved?
>
> Dwayne McAllister
>
> dmac11(at)telus.net
>
>
>
>
>
Message 2
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| Subject: | Re: propeller optimization |
Thanks Jerry, I'll take your advice. Rotax in Canada have told me there is no
problem to use the 912 gears on the 914 but while the man at warp drive said performance
would be improved, how much was my question.
Visit - www.EuropaOwners.org
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