Only the concept interests me ?
Quad + rowing otherwise it is quite awful...
The long under-slung part of rowing bar is a puzzle , is it because there is a need for that amount of leverage or travel per stroke or some other reason for it's length ?
To be honest I have often looked down at my Python trike and wondered if it could become a rowing trike ?
I sort of envisage a front fork pivoted just above the front axle pivot and driving another sprocket on the left side of the normal cranks , feet down both sides and no crank arms or pedals ?
It would then use all the gears as normal and steering would be a combination of feet pushing the front end [ just under the BB ] and twisting of the new front fork with some sort of short handle bars on the top to hold the controls ?
Only hard thing [ but not impossible to implement ] would be to get the seat to slide for and aft on the main beam , it would have very restricted forward movement before contacting the front end pivot ?
Paul
ps suspect I am a dreamer .......