Ralf

Moving the pump to the door is a great idea and is quite easy.  The newest installations I’ve seen have it mounted in the top aft corner of the door with a custom cover made to hide it.  The electric is easily handled with power inside the tunnel and a van type contact in the door.   The stainless steel tube arrangement was never very elegant.  Hope this helps.

Pat Brunner

 

-----Original Message-----
From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of bronnenmeier@GROBSYSTEMS.COM
Sent: Sunday, September 28, 2008 10:16 AM
To: lml@lancaironline.net
Subject: [LML] Door seal 4P

 

Dear subscribers,

 

I am working on rebuilding an older 4P kit (serial #207).

 

The pressure pump for the door seal is located in the fuselage. The pressure line runs along the door and runs through a steel tubing that moves in and out of a grommet when the door moves. I suspect that this is a possible source of pressure loss in the cabin.

 

I saw on pictures of newer models that there are contacts in top of the door that obviously feed power to the pump (looks like the pump is now in the door).

 

I am wondering if I should move my pump and the pressure switch for the door seal in the door. What would be the best way to get the electric power in the door – should I run a cable from the door to the fuselage or should I go with this switch that makes contact when the door closes. I would need 4 wires (2 for the pump and 2 for the switch).

 

Thanks for your advise.

 

Ralf Bronnenmeier

1070 Navajo Drive

Bluffton, OH 45817

Phone: (419) 369 12 33

Fax:     (419) 369 33 32

E-mail: bronnenmeier@grobsystems.com