Matronics Email Lists :: View topic

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Setting the GSC prop

Matronics Email Lists Forum Index -> Kitfox-List

View previous topic :: View next topic

Author Message

Malcolmbru(at)aol.com
Guest

Posted: Fri Nov 09, 2007 11:15 pm Post subject: Setting the GSC prop

can you adjust the GSC prop for winter flight? I was flying  last week and noticed that if you pulled back on the stick a little  the rpm would go down just a little but the EGT would drop 75 degrees.  at  full RPM on clime I get 6300 max and EGT s are low but at level flight it may go  6600 and the EGT,s go up  

  rotax 582 blue head   malcolm michigan  



See what's new at AOL.com and

- 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

dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Sat Nov 10, 2007 2:16 am Post subject: Re: Setting the GSC prop

Malcolm,  Your prop  seems to be ok  rpm wise  but you never said what the EGT temp is .....  wide open it will likely be low like 1000F or so but in cruise rpm range of 5600 to 6000 rpm you will want to keep it under 1200F .   Since your rpm range does seem ok, you could lower your clip on  each carb one notch which will raise your needle up and make you richer.  That is what i do every year when the temps get sub 40F or so. 



Check your plugs for colour as well to give you an idea of what is going on inside.  The EGT gauges are a great guide to changing conditions but plugs will tell the tale. Light to med brown colours on the insulator tip would be what i was shooting for to start.  Pre mix engines will run a little darker than an oil injected one. 



Also you never said what size prop you have or what gear box ratio. I can tell you that my GSC 68" 3 blade with 3 to 1 box will be about 6200 static and 6800 wide open for  reference.



Here is a few pages i made on plug info. 

http://www.cfisher.com/152hournkg.html



http://www.cfisher.com/ngk/

- 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

_________________
Realtime Kitfox movies to separate the internet chatter from the truth
http://www.youtube.com/user/kitfoxflyer
Hundreds of Kitfox Movies
Most viewed Kitfox on youtube
Most popular on youtube
Highest rated on youtube

Float Flyr

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

Posted: Sat Nov 10, 2007 10:22 pm Post subject: Setting the GSC prop

I  believe the prop should be set for 6400 WOT, 6200 rpm static.  Sounds like  your prop is set a tad too fine I don't think I'd change it as you might like to  have the extra revs for the occasional times you are at  gross.

  

 Noel

 [quote]   

   --

- 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

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Tue Nov 13, 2007 5:43 am Post subject: Re: Setting the GSC prop

 	  Quote: 	
		  I believe the prop should be set for 6400 WOT, 6200 rpm static. Sounds like your prop is set a tad too fine I don't think I'd change it as you might like to have the extra revs for the occasional times you are at gross. 	




Depends on the prop Noel. 

Kitfoxes  switched from a 66 to 68  3 blade GSC and i have found that setting the 68" at 6200 ish static will give you about 6800 WOT with a 3 to 1 box. 



To get 6400 WOT your static would likely be less than 5800 and you would suffer take off performance.



Now my WARP 68" 3 blade is a Wide tip with a bit  more bite and I am 6000 static and 6700 WOT with it .  



And your EGTs wll be affected with each prop adjustment as well at  outside Climate and temps. 



It all a game of tweaking, optimizing and compromising your prop but once set it makes the Kitfox not just a great STOL performer but a joy to fly.

- 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

Display posts from previous:

	Matronics Email Lists Forum Index -> Kitfox-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum