Today's Message Index:
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1. 03:48 PM - Going to a 72" prop (Richard Pike)
2. 10:49 PM - Re: Going to a 72" prop (TheWanderingWench)
Message 1
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| Subject: | Going to a 72" prop |
Still thinking about upgrading my Kolb MKIII, planning to go from a 68" Ivo to
a 72" Warp Drive prop, will need to raise the engine so the prop will clear the
boom tube.
The attached picture shows the typical / normal Lord shock mount method of attachment
between the airframe and the motor mount plate.
One easy way to gain more prop clearance is to flip the Lord mounts over, they
are 1" taller one way than the other, but I have never seen anybody do that.
Is there a reason why this is not a good idea?
--------
Richard Pike
Kolb MKIII N420P (420ldPoops)
Kolb Firefly Part 103 legal
Kingsport, TN 3TN0
Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=499890#499890
Attachments:
http://forums.matronics.com//files/lordmounts_127.jpg
Message 2
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| Subject: | Re: Going to a 72" prop |
Richard -=C2-
Several years ago I put a longer prop on my Maxair Drifter. Like the Kolb,
the Drifter is a taildragger pusher with a long, low boom. I made sure that
there was plenty of clearance between prop and boom, and took it for a tes
t flight. It was pretty gusty, and when I landed I bounced fairly hard. Wha
t I hadn't counted on was the amount of flex in the boom with a hard landin
g.=C2-
The occasional hard landing hadn't ever caused any problems in the past; in
this case, the ending wasn't pretty. Unlike the strut-braced Kolb, the Dri
fter has wires. The boom flex caused the prop to go through the wires, whic
h caused other mayhem.=C2- I ended up having to truck the Drifter to a fr
iend's airport and get it rebuilt.=C2-
So - although you don't have any wires, and even though you may not do hard
landings any more - you might want to build boom flex into your considerat
ions about how much longer a prop to put on your Kolb.
You've got an incredible number of experienced Kolb pilots on this list - (
and I have no Kolb experience at all) - so my experience might have no rele
vance for a Kolb MKIII.=C2-
Arty TrostSandy, Oregon
"I refuse to tip toe through life just to arrive safely at death."
On Tuesday, December 29, 2020, 03:54:49 PM PST, Richard Pike <thegreyba
ron@charter.net> wrote:
Still thinking about upgrading my Kolb MKIII, planning to go from a 68" Ivo
to a 72" Warp Drive prop, will need to raise the engine so the prop will c
lear the boom tube.=C2-
The attached picture shows the typical / normal Lord shock mount method of
attachment between the airframe and the motor mount plate.
One easy way to gain more prop clearance is to flip the Lord mounts over, t
hey are 1" taller one way than the other, but I have never seen anybody do
that.
Is there a reason why this is not a good idea?
--------
Richard Pike
Kolb MKIII N420P (420ldPoops)
Kolb Firefly Part 103 legal
Kingsport, TN 3TN0
Forgiving is tough, being forgiven is wonderful, and God's grace really is
amazing.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=499890#499890
Attachments:
http://forums.matronics.com//files/lordmounts_127.jpg
S -
WIKI -
-
=C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin.
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