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lcottrell
Joined: 29 May 2006
Posts: 1490
Location: Jordan Valley, Or
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 Posted: Mon Apr 05, 2021 11:06 am Post subject: Fwd: Kolb-List Digest: 3 Msgs - 04/04/21 |
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---------- Forwarded message ---------
From: Larry Cottrell <lcottrell1020(at)gmail.com (lcottrell1020(at)gmail.com)>
Date: Mon, Apr 5, 2021 at 1:04 PM
Subject: Re: Kolb-List Digest: 3 Msgs - 04/04/21
To: kolb-list(at)matronics.com (kolb-list(at)matronics.com) <kolb-list(at)matronics.com (kolb-list(at)matronics.com)>
I've followed this thread through all the different replies, and I once rode in a Mark three that dived for the ground when full power was pushed. Didn't like it at all, and didn't feel that it was airworthy either. Anyway I was curious about the difference in my HKS on my firestar. So I stuck the ?protractor? on the bottom of the wing as it sat in my hanger and found that the bottom of the wing measured 38 degrees, I then stuck it on the engine plate and found that it read 30 degrees. So my 60 horse engine is 8 degrees flatter than the wing.
With this configuration and trimmed for straight and level flight at 5400 rpm's. Max sustained cruise is 5800 for the HKS. If I go to full throttle of 6100 rpms the plane climbs, rather than nosing down. In other words I can climb at neutral input from the stick.
Not real sure if any of this answers your question or not, but it seems to me that a difference of 8 degrees flatter compared to the wing should get one to where the plane operates best.
for what its worth.
Larry
--
The older I get, the less tolerant I am of those who are intolerant of others.
If you forward this email, or any part of it, please remove my email address before sending.
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Jerry-TS-MkII
Joined: 23 Aug 2017
Posts: 79
Location: Indiana
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| Posted: Mon Apr 05, 2021 11:42 am Post subject: Fwd: Kolb-List Digest: 3 Msgs - 04/04/21 |
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Hi Larry!
When you are at cruise is the wing 6-8° positive? That would put the
engine thrust at 0. What's the stab angle, as compared to your wing/engine
measurements. I'd guess it's less than the engine, to produce some tail
down to balance the engine push over effects.
On Mon, 5 Apr 2021 13:05:43 -0600, Larry Cottrell
<lcottrell1020(at)gmail.com> wrote:
| Quote: | ---------- Forwarded message ---------
From: LARRY COTTRELL
Date: Mon, Apr 5, 2021 at 1:04 PM
Subject: Re: Kolb-List Digest: 3 Msgs - 04/04/21
To: kolb-list(at)matronics.com [2]
Ive followed this thread through all the different replies, and I once
rode in a Mark three that dived for the ground when full power was
pushed. Didnt like it at all, and didnt feel that it was airworthy
either. Anyway I was curious about the difference in my HKS on my
firestar. So I stuck the ?protractor? on the bottom of the wing as it
sat
|
| Quote: | in my hanger and found that the bottom of the wing measured 38 degrees,
I
|
| Quote: | then stuck it on the engine plate and found that it read 30 degrees. So
my 60 horse engine is 8 degrees flatter than the wing.
With this configuration and trimmed for straight and level flight at
5400
|
| Quote: | rpms. Max sustained cruise is 5800 for the HKS. If I go to full throttle
of 6100 rpms the plane climbs, rather than nosing down. In other words I
can climb at neutral input from the stick.
Not real sure if any of this answers your question or not, but it seems
to me that a difference of 8 degrees flatter compared to the wing should
get one to where the plane operates best.
for what its worth.
Larry
|
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http://www.matronics.com/Navigator?Kolb-List |
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