How do I do this?
 

Hi guys,

I have a Futaba 18MZ and I am busy setting up smoke.

First - What I want to achieve is to control the smoke with my throttle, but only have it switch on above 35% throttle. In other words I don't want the smoke pump to work when my throttle is less than 35% open.

Second - I want to be able to switch the smoke complete off from a two position switch.

Third - I want to control the amount of smoke with a normal end point setting.

Reason for all this; I fly a turbo prop and don't want smoke oil injected when the turbine is at less than 35% as it may choke the engine at low rpm. Also I cannot have the throttle always switch on the smoke above 35% as I need to open the throttle during the start-up of the turbine and then don't want oil being injected.

So as an end result I would like to do the following:

- Start my turbine as per normal and pull back to idle.
- Then switch on the smoke function without the smoke pump starting up.
- When I now advance the throttle past 35%, the smoke pump should switch on and deliver the volume of oil that I had set as maximum, using an end point for the smoke function.

I hope my explanation is sufficient, but please ask me to clarify any confusing bits.

Thanks for your help.

Jan

RE: How do I do this?
 

This FAQ was written for th e14MZ, but it applies equally to the 18MZ:

http://www.futaba-rc.com/faq/faq-14mz-q912.html

RE: How do I do this?
 

Thanks Bax, I'll give it a try.

RE: How do I do this?
 

Bax,

This is not working for me, here is part of the reference that you've quoted: I have made comment in ((brackets)) where I have a problem.

You will want to exit the Condition screen now, (leaving your switch set to the Up position as that you remain in Condition 2 and go back to the Function screen in your Linkage menu. This time you will again go to the channel 8 Fuel-Mix (or whichever function you have your pump on) and make sure that both Control and Trim are NULL. (( When I come back to the Function here, the control and trim is still as I had set them in the first place with the first condition - if I now change both to NULL, it also changes both to NULL in the first condition)).

Basically what I want to do is the following - please give me specific instruction on how to accomplish this:

- I want to use switch SA (which is a 2 position switch on my Tx) to switch the smoke pump on or off (regardless of my throttle stick position - see below).
- I also want to use my throttle stick (mode 1 J2) to start the smoke pump (if switched on with SA) at 30% throw and continue it working all the way up to 100% throw. When I bring the throttle back to idle (or below 30% throw) I want the pump to stop.

Thank you for your assistance.

Jan

RE: How do I do this?
 

Hi all,

All worked out, please check here

http://www.rcuniverse.com/forum/fb.asp?m=11503978

Cheers,

Jan