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Wood Prop Advice
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smokey_bear_40220(at)yaho
Guest

Posted: Thu Jun 01, 2006 8:21 am Post subject: Wood Prop Advice

Hi John,



Sounds like good performance to me.



I have CAP prop which uses Warp blades, but can`t

match your performance - yet.  Part of the problem is

that my ROC gauge is faulty.  Got it at the limits of

adjustment and it shows 125 ft/min descent in level

cruise.  More off as it goes above zero.



I forget the results of my timed climbs, but not

1500'/min.  I usually climb at over 60 knots so I can

see anyway.



How do you determine 75% and 80%?



I think I use 50% or less at 85 knots based on fuel

flow.  Produces a better true with altitude.  I

probably use 80% for takeoff.  Never twice exactly the

same without a pitch gauge on an adjustable prop.



I agree that a wood prop would look nice too, but

better on the round cowl.



Kurt S.



--- John Anderson <janderson412(at)hotmail.com> wrote:



 	  Quote: 	
		   Well I can't say and I have to respect your opinion.

  I've only flown one 

 Fox (mine) and behind a 3 blade 72" ground

 adjustable Warpdrive and one up 

 and 1/2 fuel, 1500' per min at 55kts 80% power and

 97kts cruise at 75% 

 (after tweeking the pitch to suit) is pretty good to

 me. John A.


	


__________________________________________________

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redbowen(at)hotmail.com
Guest

Posted: Thu Jun 01, 2006 8:32 am Post subject: Wood Prop Advice

Props Inc is great to work with. If you do not achieve the RPM performance 

you want they will adjust the pitch until you are satisfied.

[quote]From: "Randy  Daughenbaugh" <rjdaugh(at)rapidnet.com>

Reply-To: kitfox-list(at)matronics.com

To: <kitfox-list(at)matronics.com>

Subject: RE: Wood Prop Advice

Date: Thu, 1 Jun 2006 08:58:35 -0600




<rjdaugh(at)rapidnet.com>



Is it true that the finish on wood props doesn't stand up to flying in 

rain?

I wouldn't want to feel restricted from flying in rain.



Maybe I am being too practical,,,,,,



Randy



.



--

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Michel

Joined: 10 Jan 2006
Posts: 966
Location: Norway

Posted: Thu Jun 01, 2006 10:18 am Post subject: Wood Prop Advice

On Jun 1, 2006, at 4:58 PM, Randy Daughenbaugh wrote:

 	  Quote: 	
		   Is it true that the finish on wood props doesn't stand up to flying in 

 rain?


	


Well, I believe there are several type of wood props, Randy. Some are 

epoxy coated some are ... coated with something else, I don't know. But 

I have a Jabiru prop because I have a Jabiru engine and direct drive 

engines should have a wood prop because of the vibrations, I am being 

told.

I asked my Jabiru dealer about the effect of the rain and his words 

are: If you fly in rain, reduce RPM to 2,400 (3,000 being my level WOT 

RPM). I can live with that. My prop has a rubbery leading edge and I 

understand that it could be damaged if it spins for a longer time at a 

higher RPM. I guess the intensity of the rain has also something to 

say, as the size of the raindrops. I have been flying in thin drizzle 

rain with not effect on the prop. I guess when it's the big rain shower 

type of weather, I'll try to fly around it. Often showers are only very 

local.



Cheers,

Michel

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_________________
Kitfox 3 - Jabiru 2200

janderson412(at)hotmail.c
Guest

Posted: Thu Jun 01, 2006 11:54 pm Post subject: Wood Prop Advice

Yes Kurt, I tend to climb faster too but for the test result I've put it 

through the paces. 5000max, 4600 (at)55kts BRC speed 1500'pm (just one up of 

course) and 4300 97kts level. Ive settled at 4000 for cruise as runs 

smoothest there and 90. I notice quite a boost drop from 4300 down to 4000. 

I've very pleased with how well it has turned out (touch wood), as you know 

I have EFI, intercooler, EA82 turbo, strut fairings, speedster tail, elv gap 

seals and spring gear mounting fairings



From:  kurt schrader <smokey_bear_40220(at)yahoo.com>

Reply-To:  kitfox-list(at)matronics.com

To:  kitfox-list(at)matronics.com

Subject:  RE: Wood Prop Advice

Date:  Thu, 1 Jun 2006 09:17:16 -0700 (PDT)


<smokey_bear_40220(at)yahoo.com>



Hi John,



Sounds like good performance to me.



I have CAP prop which uses Warp blades, but can`t

match your performance - yet.  Part of the problem is

that my ROC gauge is faulty.  Got it at the limits of

adjustment and it shows 125 ft/min descent in level

cruise.  More off as it goes above zero.



I forget the results of my timed climbs, but not

1500'/min.  I usually climb at over 60 knots so I can

see anyway.



How do you determine 75% and 80%?



I think I use 50% or less at 85 knots based on fuel

flow.  Produces a better true with altitude.  I

probably use 80% for takeoff.  Never twice exactly the

same without a pitch gauge on an adjustable prop.



I agree that a wood prop would look nice too, but

better on the round cowl.



Kurt S.



--- John Anderson <janderson412(at)hotmail.com> wrote:



 	  Quote: 	
		  Well I can't say and I have to respect your opinion.

  I've only flown one

Fox (mine) and behind a 3 blade 72" ground

adjustable Warpdrive and one up

and 1/2 fuel, 1500' per min at 55kts 80% power and

97kts cruise at 75%

(after tweeking the pitch to suit) is pretty good to

me. John A.


	


__________________________________________________





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