ORIGINAL: Glacier Girl
Gary are the retracts air up/ spring down?
Easiest set up for closing the gear door is a piece of clear fishing line. One end on the outer end of the door, other to the inside of the pocket. As gear closes it contacts the line and shuts the door behind it. As gear extends it releases tension on the line, door drops open and gear extends. Pretty much fail safe.
I always worry about having a gear door set up that fails and makes you land wheels up.
I finally went with air up and air down. I'm still pondering the situation, but my thoughts are some kind of spring loaded door that would be pulled shut as you describe, but that would be spring loaded to open. I wouldn't want the door to close behind the gear accidentally and be trapped by it. I have used this method before, but not on doors this large. I am looking at linkage to the struts as well, but the geometry is tricky and it looks like I would need a slip joint to boot. I'm trying to avoid the (5) air cylinders and sequencing valve to do it pneumatically. $$$$$$$ Hope I can solve this before the snow flys again.
