ORIGINAL: RysiuM
Now waiting for engine mounting plate (it's coming from Europe) I'm turning motor stand-off's - quite a task to turn aluminum rod into pile of small chips on my mini lathe
Engine plate weights 2 oz and 4 stand-off are about 2.5 oz.
Two things happened yesterday:
1. Radial engine mount came (thank you, Pe')
2. I finished my custom stand-offs. I weighted them and all 4 are exactly 2.5oz. They are 50 mm long, 12 mm thick with 25mm base. 4.8mm hole through for 10x3 screw. If I measured right the most forward position of the engine will be 7 - 7.5 inches in front of the firewall (the most forward position of the cowling). I need to fit all parts together. The sliding box will help a lot with fine adjustments. This is very clever idea.
The engine thrust line is built into the engine box - my measurements show about 2 degree right thrust. Center of the engine mount is already marked too (horizontal and vertical line). Vertical line is 5.5mm to the left of the fuselage center. I calculated that at 7 inches from the spinner's backplate to the firewall the offset should be about 6.5mm. I still need to verify the horizontal line if it lines up with the cowling. I might move it down about 5mm to accommodate motor better as I'm afraid that the bottom of the engine and the muffler is to close to the top of cowling (engine mounted inverted).
RysiuM