ddennison

My Feedback: (15)

Hi,

I am working on my door sequencing with my SM large hawk - I am using a bvm valve on a servo (gear) and an orbit valve (doors).

I have played around with the curves and servo speeds and have it wroking in up/down mode fairly well. I am trying to have the doors close once the gear are down and cannot get the electronic valve to travel back. I am using a tophat shaped curve for the door. But this causes the servov travel to only bump a few % in one direction and go back to baseline. If I change the curve to short diagonalfollowed with a long horizontal, it cycles open and closed.

I studied several others curves for this setup and their shape suggest that the servo position should go from open-close-open or close-open-close.

Anyone have any suggestions?

I would really like to get the doors closed after the gear are down as the Goshawk flies this way.


Thanks
Dave

luv2flyrc

My Feedback: (6)

Hi Dave,

Sounds like you're on the right track. The curve will be a top hat, could be upright or inverted depending on the start position of the servo/ electronic valve.

I've attached a couple of screen shots of mine, these are from 2 different Hawk files, set up the way you want ( main doors closed with gear down)

It sounds like you may not have enough servo travel dialed in for the valve to be triggered by the back end of the curve. Does the green line indicating servo travel move all the way across your curve?

Mike

ddennison

My Feedback: (15)

thanks for your help.
my curves look pretty similar. The electronic valve though goes through 100% servo travel if I have it go open closed. When I try to bring the other end of the curve back to the starting point it basically just jogs a few blips and then goes back, never goes through any open/close signal travel...

luv2flyrc

My Feedback: (6)

Can you swap a servo in for your valve, just to see if you get the movement you want? If the servo gives you the movement you are looking for, you'll know it's something with your valve. It's just easier to visualize. If it doesn't do what you want, you'll know it's an issue with your curve or the travel.

Mike

sidgates

My Feedback: (2)

Your problem sounds like one I had recently. I needed to slow down the channel in the transmitter to about 4-5 seconds. This gave my valve servos time to operate properly.

ddennison

My Feedback: (15)

thanks guys.

I have tried slowing the gear channel down to a crawl and a few speeds in between. But there are two things I cannot make work:
1) the gear servo rotates the whole time, there is no delay to start or pause after stopping as a middle sloped curve should do...I thought if the servo position point is a flat line that the servo should not move until it reaches the slope of the curve at x%....
2) Getting the door to switch properly up-down-up, I was thinking about switching in a servo, I will try that next.

Is anyone using an electronic valve with these sequence curves?

Thank you again for your help. Fortunately I can fly if I ever get it done the way I have it but I went through the extra plumbing to have a nice scale approach, lights on, flaps and gear down and doors closed!

luv2flyrc

My Feedback: (6)

Dave, I'm using all electronic valves. One jet has 3 Jetronics ones, the other has 3 of the new Xicoy ones. ( which are almost 1/2 the price and just as good). One valve on retracts , one on main doors, one on nose doors

Mike

ddennison

My Feedback: (15)

The green line moves fully across travel if I have it set close-open. But when I pull the other end of the curve back to close, the green line just moves a few %, like it doesn't see the whole middle of the curve. The valve then doesn't switch or anything. If I take this few points out (keeping the rest of the curve) I get back to close-open, 100% travel...

Will keep working on it, thanks for your help,
Dave

HarryC

My Feedback: (1)

Dave, make sure that in gigacontrol you have the servo slowing switched off. If you have tried to slow the servo in the rx it will do what you have described.