Hello David B.
Back to you on the wood consumption .
I filled the hopper with 100% pine and worked the tractor as hard as it could go for exactly two hours. This morning I refilled the hopper and it took 33 pounds . In this two hour time span the tractor was working solid and never was brought to and idle.
Consumption looks like it might be about 16-17 ponds per hour if worked hard .
Under heavy load I will experience the typical 30-40% power loss wood vs gasoline . Most of the time this is not an issue because the roughness of the terrain I am mowing will determine the speed I am going , not the load. Kinda like driving a wood truck on roads where the speed limit is 60 mph. Makes no difference if you are on gasoline or wood , you will still be trailing about the same speeds .