Hi!
I am thrilled by the choice of aircraft you've decide to build...
Being a bit of a huge fan of
Willy Coppens you'll understand why
I am not much of a technician so I am afraid I will not be able to help you there but I do have some post-card sized color-pictures of an Hanriot HD1.
I took the pictures myself in the Royal Military museum in Brussels a couple of years ago ( the pre-digital period I am afraid )
The machine involved is an original HD1 flown by the Belgian "Aviation militaire Belge" and not a replica so it should be a historic source of information.
I can scan the pictures and mail them to you if you let me know where to send them.
I'll see what else I can dig up for you
