We are going to fly the new 40 in an all glass model - which has been flying with the standard ZDZ40 RE-
power is sorta unreal with that engine at 10.75 lbs.
Now a new pipe setup and different props will be included . One is 22.25x12 made by ZM (called 23x12)
(also using DX7 radio no mixen n switchen-just a load of expo)
I flew another ZDZ40 RE with the new pipe (Ed's) and 22x8 Mejzlic on my Bling -just to see - the engine easily ran in high 6000 rpm with smooth transition. at 14 lbs the 1450 sq in Bling was a VTO setup.
I swapped out the 40 -and redid the Bling for a 50ZDZNG and pipe running 22x10 - now the model is extremely quiet on 22x10 prop and still instant power. piped loooong for low rpm smoothness
This trick really seems to work - max power is down a bit - but so what -
Now --we are getting faster acceleration at lower rpm
More like an electric . here is the Bling - Homely as a mud fence but a great test bed
all balsa cowl now and a intake muffler makes it really quiet.