@ohzee - I think 'skilled' is going a bit far
I'll have to see about video. I'd hoped it would be quiet too but in actual fact it is surprising noisy to drive - however step back a couple of feet and the noise soon tails off. It is certainly nowhere near as loud as my neighbours' various conventional garden implements. Some weekends all you can hear is the wail of a 2 stroke.
All the noise comes from the transmission. I don't think there is anything wrong with it so guess it must have straight cut gears - its quite a high pitched whine. I changed the gearbox oil so I know it has oil in it. If I run the motor really slow it's silent but the tractor is only creeping along. The motor and chain drive are silent, I know this as I've run the motor full speed with the gearbox in neutral. I suppose a noisy transaxle isn't normally noticable on a gasser.
Despite the noise what is really good about electric is the silence and zero energy consumption when you stop. When you get off an ICE tractor you always have the dilemma of 'How long am I stopping for? Is it worth stopping the engine?'. With electric you just climb off, I usually remove the key for the safety of the kids but its not as though I need to start the engine when I come back.
I'll be back home soon so I'm planning some further mods:
1) I've bought 2x 18v Bosch strimmers really cheap. I want to mount them somewhere and run them off the tractor's battery.
2) I've also got plans to make a small 3 point hitch as I want to be able to rake the driveway and lawn. I'll make the implements too.
Not sure which I'll do first but watch this space.....