Kong,
Don't give up hope! You can supply the field with the 80 ma and vary the armature with a gecko drive and it will work fine. As for torque, if it is indeed only 33 oz/in then yes they are not too powerful. But! They look too big to be only 33 oz in. The 80 ma is the field current, the armature current may be much more. We have 400 HP DC motors at work that have a 7 amp field current. The armature current is 750 amps max.
You need to know what the max armature current is to figure out the HP.
Eric
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