Motor Mount Thrust Angles

Here is a quick way to create templates for motor thrust angle mountings.

For full explanation and instructions, please visit the original creator at ruddym's rcgroups blog.

He created this wonderful tool as an XLS spreadsheet. I have merely converted it to a simple form based web page that can be used on any web enabled device.

Just enter your data, click 'Update' and print. Glue the 3 or 4 hole template to your firewall with the vertical line, um, vertical. Now drill for your motor mount on the angled lines, place the required shims in place, and mount your motor. Presto, instant thrust angles.

NOTE: This is based on the previous version of the tool and cannot do left or up thrust, if you need that you'll have to use the latest version of the spreadsheet.

Results

The spreadsheet tells you approximately how thick the shim(s) must be, in mm. For a 3-hole mount you need a shim at the first hole location (cell B10). For a 4-hole mount you need shims at both holes adjacent to the 3-hole first hole location.