Pursuit (oz14469)

About this Plan

Pursuit. Radio control sport model for electric power. Wingspan 44.8 in, wing area 360 sq in. Foam construction.

Direct submission to Outerzone.

Quote: "Pursuit KFM3 Foamie, by Bill Bowne.

The Pursuit (so-named as I painted it in Pre-WWII US Army pursuit plane colors) was a test bed for the KFM3 airfoil. As such, it was very successful and showed the KfM3 airfoil has a lot of promise. Unfortunately, hardware failure cost us the model after only a handful of flights, but we will continue to pursue the KfM3 airfoil

The Pursuit was built from 6mm Model Plane Foam (MPF) and 1/4 in sheets of pink house insulation foam (HIF, hot-wired from much thicker sheets). Incidentally, it was MPF’s owner, Mike Springer, who provided me with the technique of making a KfM3 airfoil by bending MPF. I was very happy with how the MPF folded to make the airfoil, much better than the more brittle HIF.

I used Foam-Tack/Foam Cure and clear Gorilla Glue for most construction, When I needed a strong filler, I mixed microballoons with clear Gorilla Glue; where filler is just 'for show', I used cheap spackle (Dollar Store).

I didn’t use CA in the model. CA tends to cure to a brittle bond and won’t flex with the foam the way the foam glues do. I DID use CA hinges, though, but I installed them with clear Gorilla Glue, not CA.

I used a high Kv motor (2200 Kv) so I could get a higher pitch speed on a 2S lipo. By sticking with a 2S pack, I could then use 4 servos on an ordinary ESC, without risking a receiver brownout, whilst still using short pushrods to the unstiffened ailerons..."

Note see RCGroups build thread at https://www.rcgroups.com/forums/showthread.php?3769473

Supplementary file notes

Build notes.

CAD file

This plan is available for download in CAD format.

Corrections?

Did we get something wrong with these details about this plan (especially the datafile)? That happens sometimes. You can help us fix it.
Add a correction