Good on you Nige!
I would much rather that you posted "Merry Christmas to All and have a great
Holiday Season"! So I have.
The forum has been a bit quiet though so here are some questions for the Brains
Trust.
There is some H36 performance data that I can't seem to verify from the Manual
and get mixed answers from Mr Google.
I have been doing some calcs on glide range at Camden under onshore and
offshore area wind conditions. We typically would climb to 6-7000' on our Air
Experience Flights which puts us some distance form the airport.
After 12 or 13 years of regularly flying YT and enjoying plenty of soaring in
it I've come to consider that around 250fpm sink at best L:D (26:1?) was close
to the mark. Others talk about 300fpm. YT is very well finished and sealed and
I think that Rob and Nige may have done some wing reprofiling at the rebuild so
it may well be that it is an exception.
A min sink rate of maybe 200-220fpm
Tom posted an HK36 polar some while back but I haven't been able to track down
a polar for the H36.
I'd appreciate any comments. Where is JV when you need him!
Regards
Laurie Hoffman
From: Nigel Baker <[email protected]>
To: [email protected]
Cc: Bob Jenneson <[email protected]>
Sent: Tuesday, 22 December 2015, 23:58
Subject: [DOG mailing list] Bloody Hoffmann Props
Hi All.I had my Prop overhauled in early 2009.It had the Studs updated to
8mm.This involved changing the studs. The stud bases which they screw into and
run through the nylon bushes in the Spinner backing plate. The nylon cup
sleeves that support the springs. Larger springs. And the Nylon Guide block
bolted on the hub. This was not a cheap exercise. Now I look at the list and
see an updated bulletin. WTF. Has anybody recently had their prop overhauled
that can enlighten me. Changing the Spinner Backing plate and adding different
bearings to the hub etc etc etc looks like more big expense. Any idea’s
guys.See attached and look at the numbers and dates.Nige.
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