RE: ESM 50cc Corsair
I have the gear and I am happy to report they are very well done. Definately a cut above the usual Chinatracks. I checked them under 100 psi pressure and the down locks work well however, there is no up lock mechanism. With 100psi on the cylinder it doesn't take a lot of pressure on the strut to force it down. So, the gear will likely sag under typical model g-loadings. One solution I'm entertaining is going with the lightest wheels possible. The other solution is retrofitting a Robart-style spring-loaded latch that will have to be disengaged with a seperate servo cable pull. Obviously the second choice is more complex and drives a 2 switch hit requirement to get the gear down. I looked at using movement from the cylinder itself ala Robart and this won't work because the Robart set up uses a floating cylinder mount and the ESM mechanism doesn't.
This is certainly a minor issue and I maintain these are still very nice gear.
No, I don't have time to muck around with pictures.