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701 Max Flap Extension Speed

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dwilde(at)clearwire.net
Guest

Posted: Thu Nov 12, 2009 2:12 pm Post subject: 701 Max Flap Extension Speed

FYI 701 pilots:



This last weekend I was practicing short field takeoffs.  I deployed the 

flaps (have only one setting at 15 degrees) and had a good takeoff.  

After the takeoff I got distracted by the radio or scenery or who knows 

what and proceeded to fly to my first destination.  After a couple of 

minutes, I noticed that my trim tab did not seem to be working correctly 

as it was not in the normal position for high speed cruise i.e. 90 mph.  

Then it dawned on my that the flaps were still deployed and I was 

cruising at 90 well over the flap extension limit of 65 mph.  I slowed 

the plane down, raised the flaps and everything returned to normal. 



During the short time the flaps were deployed at high speed, the plane 

did not exhibit any bad behavior.  There was no flutter, shaking or 

anything else alarming.  On landing, I looked over the flaperons closely 

and there was no signs of stress.



I am sure I am not the only one who has ever done this but I don't 

remember seeing it here so I thought I would mention it. 



Dan Wilde

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lgold(at)quantum-associat
Guest

Posted: Thu Nov 12, 2009 2:39 pm Post subject: 701 Max Flap Extension Speed

Dan,

I think that we all have left the flaps extended at cruise speed and I hear

nothing about damaged gear caused by this. In fact I fly for hours at 70-MPG

when I'm with the slower planes in my club and keep about 10-degrees of

flaps so that the nose stays down for visibility. 

FYI, I really like the Quality Sport Planes flap handle, which allows for

finger tip lowering to 5-10-15-and 20 degrees of flap.

Les



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ricklach

Joined: 20 Jun 2006
Posts: 127
Location: Kernville, Calif.

Posted: Thu Nov 12, 2009 4:57 pm Post subject: Re: 701 Max Flap Extension Speed

Dan I'm impressed with your frank honesty. So many people today act lick it a great sin to be honest about making a mistake. I guess they don’t think they are lying when they refuse to admit a mistake. I’ve done it more than once and the dead give away to the mistake is I can’t get to normal cruse. She just seems slow and sluggish for the amount of power applied. I’m impressed you got to 90-MPH.



Rick

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_________________
701Driver
N35 26.700, W118 16.743

b.carl@sympatico.ca

Joined: 20 May 2008
Posts: 77

Posted: Fri Nov 13, 2009 4:53 am Post subject: 701 Max Flap Extension Speed

Dan

Been close to that point, without damage. For peace of mind I would closely 

inspect everything in between the flap lever and the wing skin for wrinkles 

in the area of the flapper attach points, with particular attention to the 

control rod attach points near the fuselage.

I've added a yellow warning lite on my enunciator when flaps are down. In my 

case it helps to counter the age/maturity factor.

Carl

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jetboy

Joined: 22 Jul 2006
Posts: 233

Posted: Fri Nov 13, 2009 1:47 pm Post subject: Re: 701 Max Flap Extension Speed

Dan the specified flaps down speed has never been revised since the change to 1100lbs weight and max flap angle 16 degrees contained in the plans rev.4 so there should be a higher speed that is structurally safe, just that nobody has stated what it is.

 The CZAW aircraft are placarded at 55 Kts because they operate in Europe meeting the BCAR-S rules at 1100lbs. (these are microlights in Europe and OZ / NZ rather than homebuilts/ experimental)



I have also had many occasions of flaps down overspeed, although with the Jabiru 2200 it wont cruise much over 55 Kt. With only 16 deg flaps down available, its easy to get 70Kts plus on approach, in this condition theres not much G load though. I inspected the entire control system for problems, nothing found. I did discover a rigging error  where my flaps were set with approx. 4 degress reflex (that is they were at minus 4 when should have been 0 setting) and I think this occured when misreading the diagrams rather than any overload occuring)  I now recheck regularly.



Ralph

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_________________
Ralph - CH701 / 2200a

ggower_99(at)yahoo.com
Guest

Posted: Tue Nov 17, 2009 6:19 pm Post subject: 701 Max Flap Extension Speed

Lets remember that the 701 is niknamed the air "jeep"  as forgiving as the four wheeled  original one...

  

 Saludos

 Gary Gower

701 912S 

 "If someone has ever owned an old Jeep, will understand"  not the computer dependant new ones.

 

--- On Thu, 11/12/09, ricklach <rick(at)ravenaviation.us> wrote:



  	  Quote: 	
		  

From: ricklach <rick(at)ravenaviation.us>

Subject: Re: 701 Max Flap Extension Speed

To: zenith701801-list(at)matronics.com

Date: Thursday, November 12, 2009, 7:57 PM



 --> Zenith701801-List message posted by: "ricklach" <rick(at)ravenaviation.us (rick(at)ravenaviation.us)>



Dan I'm impressed with your frank honesty. So many people today act lick it a great sin to be honest about making a mistake. I guess they donâ€™t think they are lying when they refuse to admit a mistake. Iâ€™ve done it more than once and the dead give away to the mistake is I canâ€™t get to normal cruse. She just seems slow and sluggish for the amount of power applied. Iâ€™m impressed you got to 90-MPH.



Rick



--------

701Driver

N35 26.700,  W118 16.743





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