Large Model Association Forum

i have a large scale p47 with ray slack under-cart

i am in the process of putting a new air tanks and fittings,

i was wondering if it is worth putting in a air gauge to show tanks pressure at present the air tanks rides in the centre bubble of the wing with the fill value on the side, the gauge would sit in the cockpit

https://hobbyking.com/en_us/air-pressure-gauge.html

i know the best way is to keep it simple and avoid the points of failure

what would the best approach?

any suggestions would be helpful

Are you on commission for Hobbyking, Richard? Dont you have a pressure gauge on your pump? You will not see that dial as it flies by...

yes i have a gauge on the pump but i really was thinking about air leaks a gauge would show minor leaks on an unknown

If possible, I would keep everything, Tank, valve and air control, into the wing. If its a split wing then there is/are only 1/2 connections to be made across the centre line. (depending on air up/down or air/spring) If a one piece wing then obviously no connections to be made on assembly at all.
If you have some components in the fus then the number of connections to be made on each assembly increases.
I don't use the gauge myself but if you can install one in the wing I can't see a problem really

Richard, why bother with a gauge as Alan says you can't see it when it's flying! However you could go one step better and fit a pressure sensor that should the pressure fall below a certain level it activates the retract servo to operate the system to bring the undercarriage down! Then you know there's a leak!
Cary

Cary Bailey wrote:Richard, why bother with a gauge as Alan says you can't see it when it's flying! However you could go one step better and fit a pressure sensor that should the pressure fall below a certain level it activates the retract servo to operate the system to bring the undercarriage down! Then you know there's a leak!
Cary

cary

i like the idea of the pressure sensor have you done this to any of the p51! and is there one available

stuart knowles 1611 wrote:If possible, I would keep everything, Tank, valve and air control, into the wing. If its a split wing then there is/are only 1/2 connections to be made across the centre line. (depending on air up/down or air/spring) If a one piece wing then obviously no connections to be made on assembly at all.
If you have some components in the fus then the number of connections to be made on each assembly increases.
I don't use the gauge myself but if you can install one in the wing I can't see a problem really

one piece wing all air tanks and fittings are in the hump

all i was going to add a quick connector 3 way to the line in and a single pressure gauge

richard armstrong wrote:

Cary Bailey wrote:Richard, why bother with a gauge as Alan says you can't see it when it's flying! However you could go one step better and fit a pressure sensor that should the pressure fall below a certain level it activates the retract servo to operate the system to bring the undercarriage down! Then you know there's a leak!
Cary

cary

i like the idea of the pressure sensor have you done this to any of the p51! and is there one available

Richard,
Yes
https://www.tamjets.com/gearfailsafe.php
Cary