REFLECTOR: Landing Gear Retract Prevention

[Scott Derrick]

I've got this setup in my plane, works great.

Mines in the nose compartment and I haven't noticed any problems?

I test it every annual.

Scott

Ron Brown wrote:
> The factory does offer a differential pressure switch that is connected to 
> pitot pressure.  It should be installed in the cabin (not in the nose 
> compartment unless you want to run the static side of the switch to the 
> static port) and is set to allow the gear to retract when airspeed is above 
> 4" of water or about 80 knots.  It is connected in series with the up gear 
> switch.  Normally open on the ground, closes at 80 knots.
> 
> Mine works very well.  You will need to test it during each annual and each 
> time the plane is up on jacks.  To get the gear to retract, a jumper will 
> need to be installed across it. Just don't forget to remove it before taking 
> the plane off the jacks.
> 
> Ronnie
> 
> ----- Original Message ----- 
> From: "Richard J. Gentil" <richard at naples-air-center.com>
> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> Sent: Tuesday, October 09, 2007 1:28 PM
> Subject: REFLECTOR: Landing Gear Retract Prevention
> 
> 
>> Does anyone have a solution to keep the landing gear from retracting on
>> the ground should someone accidentally select the up position on while
>> the aircraft is on the ground.
>>
>> Without drag braces, etc. I did not see an easy way to wire in a circuit
>> interruption short of something tied to airspeed. (Sort of like what the
>> old Piper Arrows used to do.)
>>
>> Richard
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