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Last year our team used the wheelchair wheels. We used a sloldering iron with a "V" shaped tip to cut tread into the tires. We had excellent grip. We could tow a fully loaded stretcher over the bridge without any loss of traction.
We cut the treads in at about .25" apart and .125" deep.
Hope this helps.
Wayne Doenges
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You mean how many Edible Data Analysis Metrics and Aggregated Measurable Entities (EDAMAME)? - Andrew Schreiber [more] 
24-01-2002, 14:56
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