solarbobky

There have been several of these out there through the years:

mysare.sare.org/sare_project/fne07-603/?page=final&view=print

http://www.readingeagle.com/berks-country/article/solar-powered-picking-assistant-takes-berry-pickers-for-a-ride

http://localbanquet.com/stories/issues/2016/fall-2016-issue-38/item/crafty-cultivation

as well as supine (sitting) versions.

There have been several of these out there through the years:

mysare.sare.org/sare_project/fne07-603/?page=final&view=print

http://www.readingeagle.com/berks-country/article/solar-powered-picking-assistant-takes-berry-pickers-for-a-ride

http://localbanquet.com/stories/issues/2016/fall-2016-issue-38/item/crafty-cultivation

One classic pedal powered machine is Rodale's "Energy Cycle" in "Pedal Power In Work, Leisure and Transportation"

http://farmhack.org/sites/default/files/forum/Pedal_Power_In_Work_Leisure_And_Transportation_1977.pdf

Relevant chapter starts on pdf pg 67.

Here's a list of documents on pedal power machines that I have downloaded in the past couple months:

forage chopper pedal powered.docx
human powered chaff cutter.pdf
human powered chaff cutter output.pdf
human powered flywheel optimization.pdf
human powered paddy harvester.pdf
human powered trip hammer.pdf
pedal chaff cutter.pdf
pedal driven unit.pdf
pedal flour mill.pdf
pedal powered Blender Mayapedal.pdf
pedal powered ice cream maker.pdf
pedal powered nursery fertilizer mixer.pdf
pedal powered pump.pdf
Pedal Powered Soap_Mixer_ny0207.pdf
pedal water distiller.pdf

It's hard to beat the maul. See:

www.pssurvival.com/ps/Firewood/Splitting_Firewood_1981.pdf

There are hand powered versions:

http://www.harborfreight.com/10-ton-hydraulic-log-splitter-67090.html

Maybe you could modify it to use hands and feet a la NordicTrack

https://www.nordictrack.com/fitness/en/NordicTrack/Skiers/nordictrack-classic-pro-skier

(and get in shape for cross country skiing at the same time)

and foot powered hydraulic piston pumps:

http://www.enerpac.com/en/news/lightweight-hydraulic-foot-pump

You could attach two to get a "Stairmaster" hydraulic pump similar to treadle water pumps:

http://www.kickstart.org/products/super-moneymaker/

http://treadlepump.blogspot.com/