I see.

Here are a few pictures of what I'm talking about. The cowl was measured evenly around the fuse and the engine was even on the mount. I got it where the crankshaft of the motor exits the crankshaft hole perfectly, and I get that funky down and right angle.

I'm using a O.S.-91FX on this bird and will be swinging a 17x6 prop on the DR1 I'm rebuilding. No one has chimed in my Thread about the funky angles.

The Hanger 9 Fokker DVII uses a 13x6 or 14x6 prop and has a O.S.-60FX. The Fokker DVII has about the same down angle- or close to it as the DR1, but has little right angle.

When I fly the Fokker DVII, I use little right rudder on take off, and it flys straight enough. I trim it depending on the wind conditions.

I'm wondering if anyone who has built the Discontinued Great Planes .60 Fokker DR1 if they remembered if they had that obvious right-down angle. The inverted firewall box does have that angle.

Thanks guys, it's the first time I run across such a thing as this and I knew this is a good place to ask.

Pete