I believe that is how the original works. I think its a sliding cam working against the closing spring. It might be possible to use a link attached to the strut but it would take time to position it properly. I used a similiar method to open and close the gear doors on my CJM HE-162. Even with the much bigger doors the wind did not harm the linkage. The jet is not very fast though.
ORIGINAL: BobH
Is it possible to have a small spring attached to the top portion of the door that wants to close it but the Main gear door keeps it open when the Gear are down?