Just had chance to nip out and give it a quick run.

On 15% nitro / 20% klotz and an APC 16x6, I'm getting a steady 8500rpm (stock muffler, YS 4c plug). Still don't have a 15x6 to hand so couldn't try letting it rev a bit. But this seems to be in line with what other people have reported for that APC.

I did try with and without the breather connected to the inlet, no measurable difference in rpm. Togatoga will be happy :-)

No sign of the rpm sagging, so it seems that JD Haytree has worked his magic again.

I did manage to detonate and throw the prop once, a second or two after transitioning from idle to WOT. A quick thank you to the patron saint of conrods and a tweak of the slow running needle and I never saw this again.

Finally, 8500 on 16x6 is unlikely to be mega for 3D on an Adrenaline, so after all this I'm still gonna put a YS110 in it!!!

HS