permaculture

["Lawrence F. London, Jr." <lfl@intrex.net>]

I need to construct a 4 wheeled device I can ride on, steer and pedal with an 
18 speed (maybe less)
gear train. I will mount adjustable-height static tillage tooling below the 
frame and drive this along
raised garden beds to scarify the soil and loosed existing weeds, prior to winter planting of spinach and a number of 
other crops. It will be too wet to get a tractor in the gardens until late Spring and I need to plant throughout January 
and February. All parts of the frame, except the tillage tool, will have to be at or above the height of the wheel 
axles. The 4 wheel bikes I have seen on the web are expensive and their frames are too low to the ground.

Any ideas or pointers to resources will be much appreciated, especially from anyone who has done any bicycle 
modifications or built human powered devices from recycled bike parts and components.

LL
--
Lawrence F. London, Jr.
Venaura Farm
lfl@intrex.net
http://market-farming.com
http://market-farming.com/venaurafarm
http://venaurafarm.blogspot.com/
http://www.ibiblio.org/ecolandtech