ORIGINAL: SpeedBoy
Thanks for the compliment guys , I´ll report the progress as soon as I have it. At the moment waiting for the pipe.
The carbon fiber props I ordered never arrived to my home , I hope the 9x10 APC props hold on the stress , I'll do some test on a safe place first.
Another option is to trim the APC 10-10 down to 9" and clean up the tips, it has more hub strength. This is how the patterns for some of the CF 9-10 props are made. If this engine had ducted fan/marine timing I would be nervous, but as a pattern/strong sport engine I don't think it will spin a 9-10 much higher than 17-18k which should be okay. But your idea to test somewhere safe first is smart.
Looking forward to your flight report!