The new "short stroke"...

A picture is worth a thousand words...seeing them in action is well, 10,000 words! The photo below (posted a zillion times) from left to right is the Mark Radcliff 1981 WC Phoenix 8 powered by the "big block" OS and pipe, my WM Intruder powered by the OS .61 AX APC 12 x 9 and Mike McConville's Hangar 9 Phoenix 7 prototype powered by the Evo .61 and Macs pipe APC 11 x 7.

Flight Observations:

Mark Radcliff flew in the pouring rain and had enough horse power to fly as tall and big as he wanted. Mark was using the same prop he flew in the 80's.

Rusty's WM Intruder was clearly slower, airplane needed to have the energy carefully managed to draw acceptably large stuff, pooped out in an absolute vertical line. The best prop of the (5) tested was the APC 12 x 9 which was somewhat surprising. Fuel was Cool Power 15%. I assume the Mac's pipe scheduled to be added for spring flying will make a significant difference.

The Evo .61 was as powerful and flew larger stuff in the Phoenix 7 as Mark's OS powered P8. I was pleasantly surprised. Of course it sounded very cool using the off the shelf Mac's OS .61 short pre-tuned header/pipe.

Conclusion: The Evo @ $140.00 or so street price is an excellent value.


Rusty Dose
Team Futaba (...that's Hobbico you know)