Matronics Email Lists :: View topic - List: Stick Transfer function

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

List: Stick Transfer function

Matronics Email Lists Forum Index -> AeroElectric-List

View previous topic :: View next topic

Author Message

aerobubba(at)earthlink.ne
Guest

Posted: Thu Sep 28, 2006 4:36 am Post subject: List: Stick Transfer function

Hi Mark-

 

 	  Quote: 	
		  Next question. I am investigating how to swap all stick switch functions 

from L to R (Infinity grip) by some reliable, safe means. About 8 wires

minimum
	


 	  Quote: 	
		   

(4-way trim, CWS, PTT, gnd). I would prefer a simple switch as opposed to 

using relays (4PDTx2) but I'm beginning to think there is no source for an

8PDT
	


 	  Quote: 	
		  switch. 

 

Any suggestions or am I barking up the wrong tree and there's a simpler

way 
	


 	  Quote: 	
		  to do this?

 

THANKS!

Mark Phillips


	


I've got similar objectives and somewhat different circumstances, as I've

got MAC/RAC trim equipment in an RV-8.  I believe that all the equipment

functions the same though, IE they operate by switching to ground.  I tried

to come up with a practical, reliable way to avoid using the MAC/RAC trim

relay$ to integrate the control functions of two sticks, but failed.  They

are just too perfect for the job of controlling one servo with two sets of

control switches.  



The other issues I was concerned with were trim system failure leading to a

trim runaway, and inappropriate operating of the switches in the back seat.

This was addressed rather handily with one progressive DPDT switch near the

throttle quadrant.  The way my system is configured, my fwd PTT goes to

ground uninterrupted.  The ground for the fwd stick trim controls goes to

one set of contacts on the switch, and the ground for all the rear stick

functions goes to the other set of contacts on the same switch.



The result is that when the progressive switch is in the up position, all

functions are operative.  In the center position, the rear stick is inop

and the front is fully functional.  In the down position the fwd stick trim

functions, in addition to all the rear stick functions, are inop.  This

leaves the fwd stick PTT, A/P DISC, and EFIS engine page call up/dismiss

functions available.



FWIW-



BTW, what is CWS?  Surely it's not Control Wheel Steering, is it?  Or did

you get a deal on surplus Boeing parts ; - )



glen matejcek

aerobubba(at)earthlink.net

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

Mark Phillips in TN

Joined: 10 Jan 2006
Posts: 431
Location: Columbia, TN

Posted: Fri Sep 29, 2006 4:23 am Post subject: List: Stick Transfer function

In a message dated 09/28/2006 7:39:59 AM Central Daylight Time, aerobubba(at)earthlink.net writes:

  	  Quote: 	
		  BTW, what is CWS?  Surely it's not Control Wheel Steering, is it?  Or did

you get a deal on surplus Boeing parts ; - ) 	


 >>>>>

  

 Thanks to all for feedback- TruTrak Digifilights do emply CWS (neat, huh?) among their many other features.  Will likely go with stick switch ground select via DPDT detented toggle (trim gnd on one pole, everything else on other), which should be pretty intuitive with toggle mounted in center of panel horizontally, possibly with small LED indicators on each side of switch (TPDT) just for sihts&giglgzls.  And thanks to Dave for reminder on PTT function as they are fought over via audio panel.

  

 You guys are the best- thanks again Matt and the A-list!

 Mark

  [quote][b]

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

_________________
From The PossumWorks...

Display posts from previous:

	Matronics Email Lists Forum Index -> AeroElectric-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum