bakerocb
Joined: 15 Jan 2006
Posts: 727
Location: FAIRFAX VA
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 Posted: Sat Feb 26, 2011 6:03 am Post subject: KIS landings |
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2/26/2011
Hello Hans Christian, Good to hear from you. You wrote:
1) "Is yours a P-TIP too OC ?"
Yes. My 68 inch diameter by 69 inch pitch Prince prop was purchased in 2001
for a total cost of $1509 US. It is referred to in the correspondence of
that time as a "composite" P-Tip and I can see a faint fiber weave pattern
showing through the gray paint so I assume that is fiberglass covering the
laminated wood core.
The carbon fiber props described in the present day Prince web site are
finished with a clear coating over the carbon fiber unless paint is
specifically requested.
2) "When I bought mine, Prince claimed that a P-Tip versjon would "act" like
a
normal version with 4inch or so larger diameter and same pitch."
Here is Prince's web site for quick access:
http://www.princeaircraft.com/
And here are his current claims for P-Tip and scimitar blade shape
performance:
http://www.princeaircraft.com/TheProp.aspx
OC
PS: I flew a rented TCM IO-240 B3B powered Diamond Katana DA 20-C1 airplane
for a few years while I was building my KIS TR-1. It had a gray painted
Sensenich prop and it took me several attempts to determine that it was
indeed a painted wood prop rather than a painted metal prop.
==========================================================
From: "Hans Christian Erstad" <hans-chr.erstad(at)c2i.net>
To: <kis-list(at)matronics.com>
Sent: Saturday, February 26, 2011 2:38 AM
Subject: SV: Re: KIS landings
Hello OC
As I reported earler I usually get 2200 RPM static and 2800 WOT (and maybe
exceeding 2800 after a minute or so, but I never run wide open and 2800 for
longer times) at 2-3000' altitude
This is with IO-240A and Prince P-TIP with 62 dia and 68 pich.
(manufactured around 1997-1998)
Is yours a P-TIP too OC ?
When I bought mine, Prince claimed that a P-Tip versjon would "act" like a
normal version with 4inch or so larger diameter and same pitch. (I cannot
remember exatly what he said) So the only reason to have a P-Tip would be to
increase ground clerance and decrease tip speed. Less tip speed could in
theory result in less noise (one of the reasons I went for Prince and
P-Tip). In case someone is not familiar with the Prince term "P-Tip", it is
sort of a winglet, and I am sure Prince web site explain it all. (but have
not checked)
Regads
Hans Christian, TR-1 #032
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