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Warp Drive Angle

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earnestj(at)frontiernet.n
Guest

Posted: Mon Sep 22, 2008 8:54 pm Post subject: Warp Drive Angle

Hi All,   

This past week, I took N13SE, Model V, Vixen up after engine replacement, (EA81 Turbo) up for the first time.  Took more than 1000 feet to get off the runway and would only climb out to 200 feet above the runway.  Was able to make a gentle turn and return to the runway.  I have gone thru everything and have come up with the prop being at a too low angle, causes the engine to over rev and would not get enough speed to just keep it in the air.  The Ellison throttle body needed some adjustment to make it run more lean (5000 Ft elevation).  The prop was set at 18 degrees where the AP put it when he did the inspection.  The question is:  For those of you that have the Subie Kitfoxes with Warp drive ground adjustable props, What do you have yours set at for general all around performance?    

Thanks to everyone.    

Ted Jacques  

   

        [quote][b]

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gary.algate(at)sandvik.co
Guest

Posted: Mon Sep 22, 2008 10:02 pm Post subject: Warp Drive Angle

I think my first question would be what static RPM were you getting on the prop - to have the performance drop you experienced I would expect that you would be over the red line on your engine at WOT on the ground. 

 

regards 

 

Gary

 

 Gary Algate

 Classic 4 Jabiru 2200

 Office Phone: +61 8 8276 7655

 

 

 This e-mail is confidential and it is intended only for the addressees. Any review, dissemination, distribution, or copying of this message by persons or entities other than the intended recipient is prohibited. If you have received this e-mail in error, kindly notify us immediately by telephone or e-mail and delete the message from your system. The sender does not accept liability for any errors or omissions in the contents of this message which may arise as a result of the e-mail transmission. 

 

 

 

    

 

 

 

"Ted & Bonnie Jacques" <earnestj(at)frontiernet.net> 

Sent by: owner-kitfox-list-server(at)matronics.com 

23/09/2008 02:36 PM 

Please respond to

 kitfox-list(at)matronics.com     To

 <Kitfox-List(at)matronics.com>   cc

    Subject

 Warp Drive Angle 

     

 

 

 

Hi All,  

This past week, I took N13SE, Model V, Vixen up after engine replacement, (EA81 Turbo) up for the first time.  Took more than 1000 feet to get off the runway and would only climb out to 200 feet above the runway.  Was able to make a gentle turn and return to the runway.  I have gone thru everything and have come up with the prop being at a too low angle, causes the engine to over rev and would not get enough speed to just keep it in the air.  The Ellison throttle body needed some adjustment to make it run more lean (5000 Ft elevation).  The prop was set at 18 degrees where the AP put it when he did the inspection.  The question is:  For those of you that have the Subie Kitfoxes with Warp drive ground adjustable props, What do you have yours set at for general all around performance?   

Thanks to everyone.   

Ted Jacques 

  



 

 -

 -

          -Matt Dralle, List Admin.

 

  

 [quote][b]

- The Matronics Kitfox-List Email Forum -

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earnestj(at)frontiernet.n
Guest

Posted: Tue Sep 23, 2008 7:00 am Post subject: Warp Drive Angle

Thanks for the question.  Since I am new to building and to Kitfoxes, I didn’t know I was to do that.  Actually, what is “static”.  Yes it does go over the redline when on the ground.  I would have thought the AP would have set that properly, but I guess not.  Please explain how to do that and get the angle right.  Thanks.  

Ted  

        [quote][b]

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brianm(at)snolab.ca
Guest

Posted: Tue Sep 23, 2008 8:04 am Post subject: Warp Drive Angle

Hi Ted

  

 Static is "not moving". When your plane is tied down  (static) your prop and engine have to work harder because all the air is  being pulled through the prop. When your plane is moving forward (flying) the  engine has less work to do because less air is being pulled across the  blades. Less work  at the same power setting means higher rpm. So, if  you are over the redline when static, once you start flying you are not in a  good position. Your prop is not set course enough to pull your plane through the  air.

 I used to set my 582 at 5800rpm static which translated to  ~6250rpm in level flight. I was looking for more cruise speed so  I preferred a course setting.  

  

 The web site below tells how to use the warp drive  protractor to set your pitch.

 http://www.warpdriveprops.com/protractor.html

  

 Hope  this helps

 Brian

 



   From: owner-kitfox-list-server(at)matronics.com  [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of Earnest  & Bonnie Jacques

Sent: September 23, 2008 10:58 AM

To:  kitfox-list(at)matronics.com

Subject: Re: Warp Drive  Angle

 

  

Thanks for the question.  Since  I am new to building and to Kitfoxes, I didn’t know I was to do that.   Actually, what is “static”.  Yes it does go over the redline when on the  ground.  I would have thought the AP would have set that properly, but I  guess not.  Please explain how to do that and get the angle right.   Thanks. 

Ted

[quote]



href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matronhref="http://forums.matronics.com">http://forums.matronics.com

href="http://www.matronics.com/contribution">http://www.matronics.com/c

[b]

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Fox5flyer
Guest

Posted: Tue Sep 23, 2008 11:05 am Post subject: Warp Drive Angle

I agree with Brian.  That is good advice,  IMO.  Not only does it give the 582 a better cruise (who needs to get off  the ground in 100 feet anyway), better fuel consumption, and also it keeps a  better load on the engine so that EGTs are more manageable.  Gerry, at  Greensky Adventures, an old Rotax guru gave me the same advice to use 5800  static.  Worked for me and there was no more screwing around.

 Deke Morisse

Mikado Michigan

S5/Subaru/CAP  397+ TT

"The aim of an argument or discussion should not be victory, but  progress."

- Joseph Joubert

  

 [quote]   Hi Ted

    

   Static is "not moving". When your plane is tied down    (static) your prop and engine have to work harder because all the air is    being pulled through the prop. When your plane is moving forward (flying) the    engine has less work to do because less air is being pulled across    the blades. Less work  at the same power setting means higher    rpm. So, if you are over the redline when static, once you start flying    you are not in a good position. Your prop is not set course enough to pull    your plane through the air.

   I used to set my 582 at 5800rpm static which translated    to ~6250rpm in level flight. I was looking for more cruise speed so    I preferred a course setting.  

    

   The web site below tells how to use the warp drive    protractor to set your pitch.

   http://www.warpdriveprops.com/protractor.html

    

   Hope    this helps

   Brian

   



         From: owner-kitfox-list-server(at)matronics.com    [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of Earnest    & Bonnie Jacques

Sent: September 23, 2008 10:58 AM

To:    kitfox-list(at)matronics.com

Subject: Re: Warp Drive    Angle

   

      

Thanks for the question.     Since I am new to building and to Kitfoxes, I didn’t know I was to do    that.  Actually, what is “static”.  Yes it does go over the redline    when on the ground.  I would have thought the AP would have set that    properly, but I guess not.  Please explain how to do that and get the    angle right.  Thanks.   

Ted

 	  Quote: 	
		  



href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matronhref="http://forums.matronics.com">http://forums.matronics.com

href="http://www.matronics.com/contribution">http://www.matronics.com/c





href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matronhref="http://forums.matronics.com">http://forums.matronics.com

href="http://www.matronics.com/contribution">http://www.matronics.com/c

	
[b]

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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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gary.algate(at)sandvik.co
Guest

Posted: Tue Sep 23, 2008 5:33 pm Post subject: Warp Drive Angle

Ted 

 

Brian is on the money here - I guess it all depends on your requirements as to whether you go for a climb (fine) or a cruise (coarse) setting. 

 

Either way, if you are over the red line on the ground you will be way over in cruise - basically it's like driving your car around in 1st gear. 

 

Over-revving can also cause serious engine damage so this really should be corrected before you fly again - What is the recommended max  RPM of your engine. 

 

best regards

 

 Gary Algate

 Classic 4 jabiru 2200

 Office Phone: +61 8 8276 7655

 

 

 This e-mail is confidential and it is intended only for the addressees. Any review, dissemination, distribution, or copying of this message by persons or entities other than the intended recipient is prohibited. If you have received this e-mail in error, kindly notify us immediately by telephone or e-mail and delete the message from your system. The sender does not accept liability for any errors or omissions in the contents of this message which may arise as a result of the e-mail transmission. 

 

 

 

    

 

 

 

"Earnest & Bonnie Jacques" <earnestj(at)frontiernet.net> 

Sent by: owner-kitfox-list-server(at)matronics.com 

24/09/2008 12:48 AM 

Please respond to

 kitfox-list(at)matronics.com     To

 <kitfox-list(at)matronics.com>   cc

    Subject

 Re: Kitfox-List: Warp Drive Angle 

     

 

 

 

Thanks for the question.  Since I am new to building and to Kitfoxes, I didnâ€™t know I was to do that.  Actually, what is â€œstaticâ€.  Yes it does go over the redline when on the ground.  I would have thought the AP would have set that properly, but I guess not.  Please explain how to do that and get the angle right.  Thanks. 

Ted 

[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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earnestj(at)frontiernet.n
Guest

Posted: Wed Sep 24, 2008 6:32 am Post subject: Warp Drive Angle

Thanks Brian, that helps a lot.  And thanks to everyone on the list.  I have gleaned a lot of information that made my job a lot easier.    

Ted  

   

        [quote][b]

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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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Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Wed Sep 24, 2008 7:13 am Post subject: Warp Drive Angle

I was advised to use 6400 to get off the water with floats...on a GSC tec 7 prop.  That worked but what really worked well was the Ivo IFA that replaced the GSC ( Expired).  I needed a full 6800 rpm for lift off with the floats but it sure slowed down the cruise speed.  

   

Noel  

       

From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of fox5flyer

 Sent: Tuesday, September 23, 2008 4:35 PM

 To: kitfox-list(at)matronics.com

 Subject: Re: Warp Drive Angle  

  

  

     

I agree with Brian.  That is good advice, IMO.  Not only does it give the 582 a better cruise (who needs to get off the ground in 100 feet anyway), better fuel consumption, and also it keeps a better load on the engine so that EGTs are more manageable.  Gerry, at Greensky Adventures, an old Rotax guru gave me the same advice to use 5800 static.  Worked for me and there was no more screwing around.  

    

Deke Morisse

 Mikado Michigan

 S5/Subaru/CAP 397+ TT

 "The aim of an argument or discussion should not be victory, but progress."

 - Joseph Joubert  

    

   

   	  Quote: 	
		    

Hi Ted  

   

Static is "not moving". When your plane is tied down (static) your prop and engine have to work harder because all the air is being pulled through the prop. When your plane is moving forward (flying) the engine has less work to do because less air is being pulled across the blades. Less work  at the same power setting means higher rpm. So, if you are over the redline when static, once you start flying you are not in a good position. Your prop is not set course enough to pull your plane through the air.  

I used to set my 582 at 5800rpm static which translated to ~6250rpm in level flight. I was looking for more cruise speed so I preferred a course setting.    

   

The web site below tells how to use the warp drive protractor to set your pitch.  

http://www.warpdriveprops.com/protractor.html    

   

    

Hope this helps  

    

Brian  

    

   

      

  

From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of Earnest & Bonnie Jacques

 Sent: September 23, 2008 10:58 AM

 To: kitfox-list(at)matronics.com

 Subject: Re: Warp Drive Angle  

Thanks for the question.  Since I am new to building and to Kitfoxes, I didn’t know I was to do that.  Actually, what is “static”.  Yes it does go over the redline when on the ground.  I would have thought the AP would have set that properly, but I guess not.  Please explain how to do that and get the angle right.  Thanks.  

Ted   	  Quote: 	
		    href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matronhref="http://forums.matronics.com">http://forums.matronics.comhref="http://www.matronics.com/contribution">http://www.matronics.com/c  href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matronhref="http://forums.matronics.com">http://forums.matronics.comhref="http://www.matronics.com/contribution">http://www.matronics.com/c 	
   	
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       [quote][b]

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_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

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