ORIGINAL: bigtim
you will be OK the back plate on the TT spinner is flat the propeller sits up against the back plate.
look closely through the prop slots in your link you can see the back plate is smooth, tru-turn spinners have a groved gripping area machined into the back plate, like your plastic one as well.
Tks for the info!
About propeller, i already knew that backplate is flat.....what i don't know is about that groove. In this plastick backplate, i have 4mm from groove and the real end of backplate (the border of backplate). If there's this space, do you know how much? In my plastic spinner, the backplate goes 4mm behind the engine backplate, like the image.
Thank you!