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Measuring Draft Power: Dynamometer – by David Kramer and R. Roosenberg
TechGuide, five pages
This discussion of low-cost dynamometers is illustrated with clear drawings. The paper focuses on how to make and calibrate a simple hydraulic dynamometer. Although it has no electronic recording devices, its feedback is good enough for refining many field practices.

Item #2gdyn, Price $ 2.00

Simple Forecart Design – by Richard Roosenberg, 1992
TechGuide, four pages
Before spending money on a manufactured forecart, you may want to consider designing your own with the considerations and suggestions of this paper. It is based on the axle of a light pickup truck, a short hitch, and a counter balancing tongue.

Item #1gfor, Price $ 1.50

Restraining Loads behind Oxen. by Richard Roosenberg, 1992.
TechGuide, three pages
Restraining heavy loads presents special challenges to oxen. This paper briefly explores basic options: adding brichen to the yoke, placing brakes on the cart, or using head yokes. This is only an exploratory paper which does not offer detailed how-to information.

Item #2grst Price $ 1.00