RE: Ultra RC 87" Yak Build and Fly
Quick question. For mounting the engine, manual states (Page 28)
"From the same perspective, measure up 1 13/16” and draw a horizontal line that intersects the line you have just drawn. This represents the vertical thrust line for the engine."
This means 1.8125" from bottom of the firewall & NOT from top of firewall correct? Pic does not look like its from top.
Just wanted to clairfy b4 I drill the holes...