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New style flap actuator

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carlosh(at)sec-engr.com
Guest

Posted: Thu Oct 11, 2007 1:04 pm Post subject: New style flap actuator

Hello everyone,

My name is Carlos Hernandez and I'm in Arizona. Please excuse me for not 

owning a Zenith aircraft but I have some questions about the linear flap 

actuator that are now being used in them. I own and fly a Pazmany PL-1, 

which is very similar in size and performance to the 601, with manual 

flaps and we want to convert to electric flaps. Now I've read the 

archives but not much has been mentioned about the performance of the 

new style unit compared to the original heavier and more costly 

actuator. I was told that there are several flying with this unit. The 

old unit number is D145-00-36-3 and the newer version is DE12-17W41. I 

have an A&P who is persistent in using the more expensive unit that has 

"a track record". I'm not looking to debate the A&P, he's a good friend 

and I do greatly respect his knowledge and opinion. I just don't allows 

agree with him. So I'm more or less looking for testimonials and/or 

experiences with the new style actuator. Do you trust it less/same/more 

than the original? I'm looking into these because they're lighter, less 

expensive and, if need be, easily replaceable.



Thank you for your time ladies and gents!

Carlos



-- 

Carlos Hernandez <carlosh(at)sec-engr.com>

Structural Engineers, LLC

2963 W. Elliot Rd. - Suite 3

Chandler, AZ 85224

Phone: 480.968.8600

Fax: 480.968.8608

www.sec-engr.com

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psm(at)ATT.NET
Guest

Posted: Thu Oct 11, 2007 2:14 pm Post subject: New style flap actuator

Hi Carlos,



I am replying with anecdotal information I got from email posts 

rather than experience, so don't take my comments too seriously.  I 

also had a conversation with an engineer at ZAC over the actuator question.



First let me say the reason I spoke to ZAC over this issue is the old 

unit didn't give me full displacement on the flaps.  The drawings 

call for 30 degrees and I was getting around 28.  The engineer at 

Zenith told me the new actuator only gives 20 degrees in this design.



The other comment I have is some builder posted a complaint about 

run-away flaps a few months ago.  I don't know which actuator he had, 

but apparently it wasn't the old "tried and true" heavy and expensive actuator.



Good luck,



Paul

XL fuselage

do not archive

At 02:03 PM 10/11/2007, you wrote:

 	  Quote: 	
		  



Hello everyone,

My name is Carlos Hernandez and I'm in Arizona. Please excuse me for 

not owning a Zenith aircraft but I have some questions about the 

linear flap actuator that are now being used in them. I own and fly 

a Pazmany PL-1, which is very similar in size and performance to the 

601, with manual flaps and we want to convert to electric flaps. Now 

I've read the archives but not much has been mentioned about the 

performance of the new style unit compared to the original heavier 

and more costly actuator. I was told that there are several flying 

with this unit. The old unit number is D145-00-36-3 and the newer 

version is DE12-17W41. I have an A&P who is persistent in using the 

more expensive unit that has "a track record". I'm not looking to 

debate the A&P, he's a good friend and I do greatly respect his 

knowledge and opinion. I just don't allows agree with him. So I'm 

more or less looking for testimonials and/or experiences with the 

new style actuator. Do you trust it less/same/more than the 

original? I'm looking into these because they're lighter, less 

expensive and, if need be, easily replaceable.



Thank you for your time ladies and gents!

Carlos



--

Carlos Hernandez <carlosh(at)sec-engr.com>

Structural Engineers, LLC

2963 W. Elliot Rd. - Suite 3

Chandler, AZ 85224

Phone: 480.968.8600

Fax: 480.968.8608

www.sec-engr.com

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craig(at)craigandjean.com
Guest

Posted: Thu Oct 11, 2007 6:44 pm Post subject: New style flap actuator

The run-away actuator was with the Surplus Center actuator and actually

cause by the electronic controller available from the same source. With a

hard toggle switch there is no power available to the actuator (of any make

or model) and it can't run away. Others include a circuit breaker in the

flap motor circuit to add a back-up disconnect.



-- Craig

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