Bloody Wonder motor thrust angle

[leakywellie]

Hi Guys,
I'm just about to install my motor and esc in my first bloody wonder and I'm not sure if I should add down thrust and right thrust to the motor mount. The last planes I built 15 years ago all had a few degrees of down and right so I was wondering if this plane needs it or should I just mount it flush to the firewall?
Cheers
Peter

 

[PlaneAddicted]

When I built mine I did not change the motor mount. After my first flight I ended up using longer screws and putt washers behind the motor to give me down and right thrust. I build two bloody wonders and one needed more down than the other one.

-JohnR

 

[ttprigg]

Mine have all been without any angles. They flew great for what I know (Maybe I should try some adjustments).

 

[nebulous]

Mine does want to climb when I apply more throttle. Going to WOT is quite a bit of climb. A bit of down thrust would probably help. Physics hasn't changed; stick with what you know Of course, you can judge for yourself as well. Washers are easy to add later on.

 

[leakywellie]

Thanks guys, I think I'll add the thinnest size washers I have for the first flight and have various thickness's available to change it out at the field.
I'm also most of the way through a baby blender build so I'm thinking that will be a similar consideration for thrust angles.

Cheers
Peter