I have tried it all, to get my folding props to fold back when the elec. engine is shut down. I have a RTF Aspire. I have filed the plastic spiner so when I hold the nose up, the props fold. I have lubed with light wht silicone. The props are as free as a feather to fold back. BUT when it is airborn..they windmill even with a pitch up to stall or dive.
Some chap said something about dental rubber bands. If so where and how do I put them in?
Thanks from a windmilling glider pilot!