got out the 1935 D to pull my new 20' trailer around back. rigged up a headlight with a strap. lol had to go up hill and down hill in soft ground the D had no problems didnt even slip a tire was running it at about 500rpm. trailer weight is only 2,000lbs but the D got to play. about 3 turns of the fly wheel in 30 degree temps and it fired right up.
just for fun