Hi brenner
A happy new year.
Yes, a ZDZ40 gasoline engine is heavier by 150g than YSDZ160.
And it became a little heavy because it and a soft_mount were manufactured by my hand.
Besides, it is heavy with CDI(120g), and the fireproof cover of a long muffler(150g).

It is distributed from one battery(AA, 2000mAH Sanyo eneloop) to the receiver and CDI.
Therefore, electric current of 250mAH is consumed with 1 flight (12 minutes).
I think that the vibration of this engine is bigger than DZ160 a little bit.

The comparison of the price is as the following.
- - - - - - - - - - - - - - - ZDZ40F3A - - - - - - - YS DZ160
Fuel consumption rate - - 250cc/ 30yen($0.3) - - 500cc/ 600yen($6)
(P09x2, 12 minutes)

kobago