Tinker1980
New Member
I got bored a bit ago and tore apart two of my old cordless drills, one a 14.4 Volt B&D, the other an 18 volt Harbor frieght special. The B&D had a bad battery and had been laying around a while, the 18V HF drill I ended up giving the battery and charger to my brother in law.
Both of these motors and their gearboxes look nearly identical - the only difference is the better clutch (More selections) on the B&D drill, and the B&D drill has some plastic gears, while the HF drill (The cheaper one!!) has metal gears. They both have brushed DC motors and two stage planetary gear reduction. They also both have a "speed control" that consists of a trigger housing, and a transistor screwed to a heat sink.
Questions are these: How powerful are these motors? Hooked up to the 12v battery in my truck I can't grip the chuck and stall them. How long to they run before getting too hot?
I've been kicking the idea around of using them on a motorized bike, and building or buying a brushed motor controller. I'm sure there are those who will tell me it won't work, and if you do please provide exaples... and remember that someone, somewhere, once said that putting a motor on a bicycle was a bad idea too.
Both of these motors and their gearboxes look nearly identical - the only difference is the better clutch (More selections) on the B&D drill, and the B&D drill has some plastic gears, while the HF drill (The cheaper one!!) has metal gears. They both have brushed DC motors and two stage planetary gear reduction. They also both have a "speed control" that consists of a trigger housing, and a transistor screwed to a heat sink.
Questions are these: How powerful are these motors? Hooked up to the 12v battery in my truck I can't grip the chuck and stall them. How long to they run before getting too hot?
I've been kicking the idea around of using them on a motorized bike, and building or buying a brushed motor controller. I'm sure there are those who will tell me it won't work, and if you do please provide exaples... and remember that someone, somewhere, once said that putting a motor on a bicycle was a bad idea too.