|ARPS Corporation of New Holstein, Wisconsin
manufactured unique job specific farm and specialty equipment. This highway mower is
a fine example. It is powered by a Ford Model A engine, coupled to a Model BB
transmission, and 1/2 ton axle with gear reductions at each wheel. The snow plow frame and
lights are not OEM and have already been removed. Restoration is currently underway and
images will be posted as it progresses.
This tractor is sporting 7.50 x 16 front tires and
7.50 x 20 rears. The front wheels are ARPS manufactured with solid centers. The rear
wheels are modified shallow dished AA truck rims. It is not yet known if they are ARPS
manufactured. The advertised models from 1937 to 1941 actually had 7.50 x 16's front and
back as standard equipment with air tires.
gear reduction units are mounted on the rear axles, giving the tractor the ability to
travel at very low speeds. Top speed in low is 2.5 mph and in fourth gear is about 38 mph.
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Final drive inside view
Final drive front view
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If you bought an ARPS' Blackhawk kit it would have the radiator shell, hood and cowling of the vehicle used. If it was made by ARPS it had its own distinctive radiator shell. The top is cast iron and the center bar is cast aluminum. The side panels are stamped steel. When the shell is restored there will be square mesh steel fabric panels in the openings. Later, I will post a picture of the hood-gas tank assembly.
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engine is a standard 1929 Model A engine. This is not the original engine, which
should be a Model BB. Although still unconfirmed, the apparent year of manufacture
is either 1940 or 1941. The Model A engine is going to be restored as the
power unit for now. It will be fitted with a Model B distributor, since there is no place
for a mechanical timing advance. Later, I will acquire a Model BB engine and restore it
and then make the swap. The Model A will be sold to help defray some of the costs of
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The dash is not original at all. Originally, the Blackhawk comes with one guage, the key and a choke control mounted in a small rectangular plate. Part of the plate mount still exists but the face was cut off. A new one will be easy to fabricate, unless I opt to go with a Model A instrument panel. It won't be original, but I like being able to see what is going on. The steering wheel appears to be what was used on 1940 and later models. You can also see it in the radiator shell photo. Photos of earlier models have the Ford Model A four spoke wheel.
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The transmission is from a Model BB truck. The first-second and third-fourth slider gears were siezed to the output shaft, but have since been freed. The tranny will come out at sometime in the future for a full tear down, inspection and rebuild. Like wise for the drive shaft, differential, and final reduction gears.
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Most recent update 04.08.2004