Hi! i just saw this thread, surprise for me...
Vincent and me design this 26cc gas engine trainer, few years ago i did fly an arf stick with a 3w28cc gas engine , a Giant sweet and low stick from Midwest with a zdz40, i told my friend ,lets do a trainer for those small gas engine, low cost on fuel, i try a chineese sv26cc with 16 oz tank, more than 37 minutes.
All our club member's try it, so much fun, it land by itself....we did fly in 30km/hre wind without any trouble.
please take a look at the small video online in the website, it float like a telemaster.
It is very easy to build, all interlocking parts, if you send us an email, we will send you the manual in pdf.
We just finish to draw a bigger one for 40 to 50cc gas engine
Michel
www.amr-rc.com