Go to Exterme flights web site. In the YAK 87 inch area there's a DA 50 template. Download it and print it out. I measured it and checked it to the engine, it's dead nuts right on. Worked great.
http://www.extremeflightrc.com/produ...20template.pdf
PS: Make sure to check the print out for weird scaling before you use the template. Mine was ok but on your printer setup it could alter the scale of the template. Always good to triple check it first.
ORIGINAL: hotrodder
What is the best way to transfer the mounting holes to the firewall for the DA 50? Some engines already come with patterns, the DA didn't. Thanks for the help