Old 744 Forum

Archived posts

TQ and reversers ... once more ;o)

Page: 1

Author Post
Member
Registered: Nov 2010
Posts: 139
Location: Vienna
Hi all,

I know, this has been discussed some time ago .. but I did'nt found the conclusion to my question .. :oops:

Working on my 747 TQ I'm implementing the pots for the thrustlevers. My genuine TQ uses a pushrod to bring the lever AND reverser movements to one resolver (potentiometer).

So my question: can I split the pot value to sense btw. thrust and reverser, or is it best to implement two potentiometer for each lever: one for thrust, one for reverser?

Any suggestions or discussions welcome!

Thanks a lot and BR from Vienna
Hans
_______________
Hans G. Schuetz
http://B747-400.net
« Last edit by B747-400 on Mon, 06 Apr 2015 07:33:57 +0000. »
Member
Registered: May 2012
Posts: 158
Location: Farnborough, UK
Hans,

I wired my throttles using a couple of these:-

http://www.autosportlabs.com/product/celesco-sm1-linear-string-potentiometer/

I mounted them in the bottom and attatched them to the 'turny bit' where the pushrod connected to, removing the pushrods and making it a self contained unit.

I then used a bodnar card and wrote a quick program to take the pot value, calibrate it to 0 and then inject the variables to PSX.

One pot per lever

I could send you what I have got if you want? goliver1984@gmail.com

Cheers
Gary
Member
Registered: Nov 2010
Posts: 139
Location: Vienna
Hi Gary,

a similar solution comes into my mind. But using linear pots instead of strings. 4 of this pots are not really cheap :(

But then I was stuck with splitting values. A programm which injects the values seems to be a great idea to me.

BR Hans
_______________
Hans G. Schuetz
http://B747-400.net
Member
Registered: Dec 2012
Posts: 14
What are your pots connected to ?
Member
Registered: Nov 2010
Posts: 139
Location: Vienna
Hi Andrew,

at the moment - for testing purposes - I'm using two Opencockpits USB-AXES Cards.

BR
Hans
_______________
Hans G. Schuetz
http://B747-400.net

Page: 1

Old 744 Forum is powered by UseBB 1 Forum Software