I am making a mount extension for the new motor,.
this will be a total of 44 mm.
I ordered some 1/4" Finnish plywood, aircraft quality, from Aircraft Spruce. Cut 4 pieces, and glued them together with Titebond I.
I am using an SWB mount as a template. I believe the spacing is 80 mm by 90 mm for the holes.
the holes for the mounting are 1/4". But then I drilled two 5/16" holes next to each mounting hole. these will be filled with 5/16" poplar wood dowels.
Dowels glued in
I drilled out the center so that it will cut down on the weight.
I then laminated the front and back with G10 material, and clamped it together with bolts. I am using Epoxy resin, this should be cured by tomorrow morning. then I will sand down the edges and make it "pretty". I will also cut out the center hole from the G10 material, and then I will weigh it.