Next set of doors are the nose doors. The front door has to open first, then once fully open the nose leg comes down and pushes the rear door down and beyond the 90 deg line so that it leans backwards slightly and gives a bit more ground clearance.

The difficulty with the front door is that the tyre of the retracting wheel virtually touches it on the way in and out so its not possible to put any kind of linkage in the middle of the door - instead I've had to offset it. Again, since this is a 90 deg door its easy to estimate where the cylinder should attach and again it seems about right. My only concern is that since the cylinder attachment is off centre it might twist the door as it moves. If this happens then I might just have to put a cylinder on the other side to to balance it out. I won't know until I attach the air to it.

The rear door is a bit harder to estimate, it is attached to the gear leg, but has to move further than the gear leg moves - to do this we have to make the distance between the door hinge point and the connection on the door less than the distance between the gear leg hinge and the attachment on the gear leg.

...A few calculations and estimations later I tacked everything in place and closed the gear - unfortunately the linkage fouls the steering spring on the back of the leg as the gear retracts.

A few more attempts and I finally got the position right - then a little adjustment of the clevis and the door was closing perfectly.