Do you take off with the cabin air open? In the summer the AC keeps it nice and cool inside, so I don't have a problem with temperature. But I have always had to take off with the cabin air 100% off and then a little while after take off very very very slowly start to open it. I bought this airplane used. I noticed the vacuum line is And there is no switch connected to the gear for pressurization. Is a tee and a check valve still the preferred method to create vacuum for the system on an all electric airplane?
Typing and grammar errors courtesy of Siri and the iPhone. The system should be set so that the aircraft is unpressurized on deck-- usually through a gear down (ivp) or weight on wheels switch (Evo). This is to protect the pressure vessel.
Jeff
Sent from my iPad Yes this I do not understand, my AC and pressurization is on after I start the plane and stops when I stop the engine, and my cabin is cool and fine like this. Ronald Stevens 786-338 1678
I don't pressurize until I get up to 6-8,000 ft. This keeps my cabin a bit cooler and comfortable at low altitude and doesn't steal power when it's needed most ie on takeoff and early climb out. Do others do it differently?
David Weinsweig N750DW Propjet On take off the other day I was up to 2 Psid by the time I went wheels up. That was with the gold box 95% closed. Does anyone happen to have a dukes manual?
Typing and grammar errors courtesy of Siri and the iPhone.
On Mar 13, 2013, at 14:14, Colyn Case <colyncase@earthlink.net> wrote:
> If you have a vacuum system, you can hook that up.
> If you don't, you can buy a small pump and hook that up. I haven't done the latter but I've heard the door seal pump works okay for this application.
>
> Using that main vac pump almost completely eliminates the cabin pressure increase at takeoff.
>
> On Mar 13, 2013, at 1:21 PM, Todd Long wrote:
>
> How do most of you operate the pressurization system to avoid the major bumps at takeoff? My vacuum line was capped.
>
> Typing and grammar errors courtesy of Siri and the iPhone.
>
> On Mar 13, 2013, at 10:56, Paul Miller <pjdmiller@gmail.com> wrote:
>
>> Autozone, lots of smaller sizes for vacuum hose by the foot.
>> On 2013-03-13, at 10:51 AM, Colyn Case <colyncase@earthlink.net> wrote:
>>
>>> I'm looking for a minimum thickness vacuum hose just to hold the dukes pressurization valve open on takeoff. Right now I have a 1/4" i.d. .64" o.d. big fat rubber line. I don't see anything on McMaster Carr that is thinner wall. But given it probably needs to handle maybe 10 psi of vacuum, the big fat rubber hoses seem like overkill.
>>
>>
>> --
>> For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html
>
> --
> For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html
>
>
> --
> For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html
Sent from my iPad
|