The Murphy Builders Site

Good News Rick, glad you're back in the air
Not sure about the ASI problem...do any other static instruments work OK,
ALT,VSI etc ?
Nig
745E


-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of
Rick Harper
Sent: 19 February 2007 05:10
To: rebel-builders@dcsol.com
Subject: [rebel-builders] HEEEEeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeelp !
(Airspeed Indicator)


G'day Everyone ....

Well ,..... it's been 18 (or19) months since I damaged her & pulled her
apart ...... but .............

VH - REB ( Rebel 541R ) now FLYS AGAIN Woo Woo !!!!!

(and the stall with my home made cuffs and VG's is REALLY benign & docile

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Now ...... I need your help people ....

My Airspeed Indicator was just checked (in situ') and is reading 98 - 99%
acurate over it's entire range - ( 20 to 160 knots ) ..... BUT ...

When I test flew her - it consistantly read 12 ish Knots UNDER range in the
air at high speed ...... and at least 10 ish knots OVER as I was rounding
out to land ?!?!?

(I did a bunch of flying on Saturday & Sunday - and, using the GPS over a
multitude of headings & altitudes - acertained that the cruise speed is
actually 100 knots - and

I have BOTH the pitot and the static probe hanging off the front of the
leading edge of the port wing - by about 18" - and about 5 feet out from the
root

My own suspicions are :

1) Problem with the static air side of the system - somewhere ?!?

2) False readings from the high angle of attack she now can achieve

3) pixie dust caught in my pitot tubes ... (just kidding)

Anyone got any suggestions about WHERE to / how to set up the static system
/ inlet etc, etc .... ???

Thanks

Rick "Biggus" Harper
541R
( Airborne again






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