I've been looking for a source of spare parts and something that will help me prototype some.solitions for the top flaps. It looks like copart has at least 4 convertibles available on auction right now. For me there is one in Tifton Ga and on in TN. Anyone else looking for a similar option should keep an eye on these. I'm wanting to prototype a belt drive flapper option to get rid of the gears that seem to be our Achilles heel.

 

Do you know about our member @Guy Menard he gets the gears made in metal and takes care of this weak link.
I suspect by the time you're done with your research, development and parts purchasing you'll be close if not more than what he sells the gears for.

 

Yes I am pretty familiar with Guys gear sets. I have them in my system. However, I now have a stuck flapper due to issues with the planetary gears.