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Hello All-
Below is a picture of a cargo crawler I've been thinking of. Gross weight would be 2000lbs, moves between 1.5- 3mph, crawls on pavement or concrete. So far I've come up with aluminum tube welded frame with wheel motors at the rear, either motorcycle type or electric forklift type, the latter already built for heavy weight. Based on speed I've come up with aprox. 150-600 ft/lbs of torque needed, (150 for 1.5mph & 600 for 3mph).
Q1-Can i simply divide the ft/lb requirement by 2 to come up with the torque for each motor, 1 on each side in the rear?
Q2 - If a motor is rated at say 100 ft/lbs of torque on the spec. sheet, is that under no load, an industry standard load or what? How much decrease in torque could i expect as load increases? (in this case 2000lbs)
Q3 Anybody have any thoughts suggetions on either frame design, frame material, drive system?
The power system envisioned is DC with onboard battery. The crawler needs to run for 120 minutes continuously at a constant rate of speed somewhere between the 1.5-3mph.
Interested in any input.
Thanks
Tyler
Below is a picture of a cargo crawler I've been thinking of. Gross weight would be 2000lbs, moves between 1.5- 3mph, crawls on pavement or concrete. So far I've come up with aluminum tube welded frame with wheel motors at the rear, either motorcycle type or electric forklift type, the latter already built for heavy weight. Based on speed I've come up with aprox. 150-600 ft/lbs of torque needed, (150 for 1.5mph & 600 for 3mph).
Q1-Can i simply divide the ft/lb requirement by 2 to come up with the torque for each motor, 1 on each side in the rear?
Q2 - If a motor is rated at say 100 ft/lbs of torque on the spec. sheet, is that under no load, an industry standard load or what? How much decrease in torque could i expect as load increases? (in this case 2000lbs)
Q3 Anybody have any thoughts suggetions on either frame design, frame material, drive system?
The power system envisioned is DC with onboard battery. The crawler needs to run for 120 minutes continuously at a constant rate of speed somewhere between the 1.5-3mph.
Interested in any input.
Thanks
Tyler