Ron
I’ve done some “research” about putting electric flaps in a Sonex that doesn’t have them.
Well, B-model’s (except the XENOS) have electric flaps included in the kit, so you can only talk about adapting your flaps to electric operation in Legacy Sonex’s and Waiex’s.
The easiest way to do it is purchasing a linear actuator like this one
https://www.pololu.com/productand figure out how to install it to replace the flaps handle.
There are several websites from other Sonex builders who did this before you, so you have to invent, just choose one and copy :-)
Cheers
Carlos