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Pat Reilly
Joined: 06 Aug 2009
Posts: 345
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 Posted: Wed May 04, 2011 3:46 pm Post subject: 582 RPM's |
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Kitfoxers, I'm running a 582 C box with a 72" Warp Drive prop. What RPM should I be running in straight and level flight, cruise and full throttle. Also I can idle down below 2000 RPM on ground at start up but on approach I have trouble getting RPM below 3000. I can't get her to stop pulling, hard to land when you can't get her to idle down.
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Pat Reilly
Mod 3 582 Rebuild
Rockford,IL
[quote][b]
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dwight purdy
Joined: 10 Feb 2006
Posts: 85
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| Posted: Wed May 04, 2011 5:05 pm Post subject: 582 RPM's |
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Are you three to one reduction?
Dwight Purdy
model II
[quote] ---
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dwight
model II |
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Guy Buchanan
Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA
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| Posted: Wed May 04, 2011 5:55 pm Post subject: 582 RPM's |
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On 5/4/2011 4:40 PM, Patrick Reilly wrote:
| Quote: | Kitfoxers, I'm running a 582 C box with a 72" Warp Drive prop. What
RPM should I be running in straight and level flight, cruise and full
throttle. Also I can idle down below 2000 RPM on ground at start up
but on approach I have trouble getting RPM below 3000. I can't get her
to stop pulling, hard to land when you can't get her to idle down.
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Set it up for 6800 WOT, level flight, at about 6500' density altitude.
Everything else is what it is. I cruise at about 75% power, which works
out to 90% of your WOT speed. (Speed varies as the cube root of power.)
Can't help you with idle, as I always had an RK400 clutch, which I can't
recommend enough.
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 592-C / Warp 3cs / 500 hrs. and grounded
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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_________________
Guy Buchanan
Deceased K-IV 1200
A glider pilot too. |
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Pat Reilly
Joined: 06 Aug 2009
Posts: 345
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| Posted: Wed May 04, 2011 7:04 pm Post subject: 582 RPM's |
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Guy, Thanks for info. My biggest concern is that high idle on final at flare.
Pat Reilly
On Wed, May 4, 2011 at 8:49 PM, Guy Buchanan <gebuchanan(at)cox.net (gebuchanan(at)cox.net)> wrote:
| Quote: | --> Kitfox-List message posted by: Guy Buchanan <gebuchanan(at)cox.net (gebuchanan(at)cox.net)>
On 5/4/2011 4:40 PM, Patrick Reilly wrote:
| Quote: | Kitfoxers, I'm running a 582 C box with a 72" Warp Drive prop. What RPM should I be running in straight and level flight, cruise and full throttle. Also I can idle down below 2000 RPM on ground at start up but on approach I have trouble getting RPM below 3000. I can't get her to stop pulling, hard to land when you can't get her to idle down.
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Set it up for 6800 WOT, level flight, at about 6500' density altitude. Everything else is what it is. I cruise at about 75% power, which works out to 90% of your WOT speed. (Speed varies as the cube root of power.) Can't help you with idle, as I always had an RK400 clutch, which I can't recommend enough.
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 592-C / Warp 3cs / 500 hrs. and grounded
as List Un/Subscription,
www.matronics.com/Navigator?Kitfox-List" target="_blank">http://www.matronics.com/Navigator?Kitfox-List
ronics.com/" target="_blank">http://forums.matronics.com
Matt Dralle, List Admin.
=====
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--
Pat Reilly
Mod 3 582 Rebuild
Rockford,IL
[quote][b]
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
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Guy Buchanan
Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA
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| Posted: Wed May 04, 2011 8:22 pm Post subject: 582 RPM's |
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On 5/4/2011 7:30 PM, Patrick Reilly wrote:
| Quote: | Guy, Thanks for info. My biggest concern is that high idle on final at
flare.
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It's been a common problem on the list in the past. That's one reason
why a lot of us run the clutch. I've always loved it. I notice the price
is up to $520US. Hard to swallow when the whole engine's only worth a
few grand. I do think, though, that it's the best improvement you can do
to a flying 582.
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 592-C / Warp 3cs / 500 hrs. and grounded
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
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_________________
Guy Buchanan
Deceased K-IV 1200
A glider pilot too. |
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Pat Reilly
Joined: 06 Aug 2009
Posts: 345
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| Posted: Thu May 05, 2011 6:43 am Post subject: 582 RPM's |
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Guy, Thanks for the reply. I never could figure out why run a clutch except for startup at low idle to eliminate all the gearbox vibration. Now I know themajor advantage of the clutch is reduction if rpm on flare.
Hey, Dave Fischer do you have a problem with reducing rpm on the 582 for landing?
Pat Reilly
Mod 3 582 Rebuilt
Rockford, IL
On Wed, May 4, 2011 at 11:18 PM, Guy Buchanan <gebuchanan(at)cox.net (gebuchanan(at)cox.net)> wrote:
| Quote: | --> Kitfox-List message posted by: Guy Buchanan <gebuchanan(at)cox.net (gebuchanan(at)cox.net)>
On 5/4/2011 7:30 PM, Patrick Reilly wrote:
| Quote: | Guy, Thanks for info. My biggest concern is that high idle on final at flare.
|
It's been a common problem on the list in the past. That's one reason why a lot of us run the clutch. I've always loved it. I notice the price is up to $520US. Hard to swallow when the whole engine's only worth a few grand. I do think, though, that it's the best improvement you can do to a flying 582.
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 59> :
fox-List" target="_blank">http://www.matronics.com/Navigator?Kitfox-List< - MATRONICS WEB FORUMS -
= --> h
a href="http://www.matronics.com/contribution" target="_blank">http://www.matronics.com/contribution
===========
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Pat Reilly
Mod 3 582 Rebuild
Rockford,IL
[quote][b]
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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mikeperkins
Joined: 22 May 2007
Posts: 123
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| Posted: Thu May 05, 2011 7:57 am Post subject: Re: 582 RPM's |
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In a glide at idle power, the prop is being driven by the airflow; thus, the windmilling prop/engine is actually a drag on the aircraft. The reason for difference between ground and glide RPM is due to windmilling effects (which produce drag).
The fact that the aircraft doesn't want to land at idle power is simply that there is excessive airspeed, not excessive power. I'd be interested to know what your final approach speed is before the flare.
Mike Perkins
Model I 532 1994
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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Pat Reilly
Joined: 06 Aug 2009
Posts: 345
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| Posted: Thu May 05, 2011 2:40 pm Post subject: 582 RPM's |
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Mike, Thanks for your input. I'm flairing too high most of the time also. I can't seem to get the correct sight picture for flair height. This happened previously and I corrected it. Now I'm back to flairing too high and bouncing back into the air. I am going to get my instructor up with me again.
Pat Reilly
On Thu, May 5, 2011 at 10:57 AM, mikeperkins <michael.perkins(at)rauland.com (michael.perkins(at)rauland.com)> wrote:
| Quote: | --> Kitfox-List message posted by: "mikeperkins" <michael.perkins(at)rauland.com (michael.perkins(at)rauland.com)>
In a glide at idle power, the prop is being driven by the airflow; thus, the windmilling prop/engine is actually a drag on the aircraft. The reason for difference between ground and glide RPM is due to windmilling effects (which produce drag).
The fact that the aircraft doesn't want to land at idle power is simply that there is excessive airspeed, not excessive power. I'd be interested to know what your final approach speed is before the flare.
Mike Perkins
Model I 532 1994
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=339013#339013
ist Un/Subscription,
www.matronics.com/Navigator?Kitfox-List" target="_blank">http://www.matronics.com/Navigator?Kitfox-List
ronics.com/" target="_blank">http://forums.matronics.com
Matt Dralle, List Admin.
=====
|
--
Pat Reilly
Mod 3 582 Rebuild
Rockford,IL
[quote][b]
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
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