Today's Message Index:
----------------------
1. 09:56 AM - Re: KIS TR-1 Air Speeds ()
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: KIS TR-1 Air Speeds |
10/28/2009
Hello Tim, You wrote:
1) "Are our props that much different?"
My Prince P-tip prop is 68 inch diameter with 69 inch pitch. I get a static
RPM of about 2,100 at full throttle. It would appear that you have a bit
more of a cruise pitch prop while mine is a bit more towards the climb pitch
side.
2) "My elevator trim tab is MAC driven and I can trim for level flight at
low and high power settings ......."
I don't have an elevator trim tab. My pitch trim is a MAC driven spring bias
system connected to the elevator push rod. The system could be adjusted a
bit to give me some more nose down trim, but even then I don't know if I
would have enough trim travel to cover my complete range of airspeeds. Since
I do most of my flying puttering around locally at low airspeeds (helps save
fuel) I live with my present trim system adjustment and tape on the
supplemental nose down aluminum tab when I want to go fast or have a heavy
load. I am usually flying locally at 2,000 RPM with a fuel flow of around 4
gallons per hour, this gives me 100 knots indicated. Down wind leg in the
landing pattern is at 1,800 RPM with 90 knots indicated.
3) "I extended my elevator the 1" as recommended by Rich and Vance circa
1996."
I also extended the trailing edge of my elevator.
'OC' Says: "The best investment we can make is the effort to gather and
understand knowledge."
=====================================================
----- Original Message -----
From: "F. Tim Yoder" <ftyoder@yoderbuilt.com>
Sent: Wednesday, October 28, 2009 12:05 AM
Subject: Re: KIS TR-1 Air Speeds
> Thanks for the report 'OC'.
>
> I am curious, I have a Sensenich wood 68 x72 prop.
>
> Static RPM is 2000
>
> I get a solid 160 MPH indicated @ 2550 RPM (140 K)
>
> At 3500', full throttle was 2800 RPM indicating 195 MPH.
>
> Are our props that much different?
>
> My elevator trim tab is MAC driven and I can trim for level flight at low
> and high power settings, I extended my elevator the 1" as recommended by
> Rich and Vance circa 1996. That gave me more surface area on the trim tab.
> I have to trim down two ticks on the trim gauge for level flight. I noted
> the advantage the RV guys have with their ability to adjust their
> horizontal angle of attack after flight testing.
>
> Out here in Arizona, if we go to another town it's usually a cross-country
> flight. Two weeks ago our Breakfast Club flight was to Kingman. 175sm in
> 1:10 @7500 & 8500'. When flying around locally I will usually power back
> to 2450 RPM so I can fly a little longer.
>
> The TR-1 is a great little plane! Thanks Rich!!
>
> Tim
>
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|