I have an electric lawn mower that, upon taking the cover off to clean all the grass junk out, discovered it uses a permanent magnet DC motor and a bridge rectifier. I started thinking, in a Tim Taylor sort of way (you know, the sitcom Home Improvement) that maybe putting a capacitor across the motor would give it slightly more power.
Now I know that even if this does improve how it runs, the improvement won't be very much, if even at all. I used to have two 2900uF/200V capacitors around, but I'm afraid they may have been thrown out. So my question is, do you think this is even worth doing, or will it be a waste of time? I don't know much about electric machines, but can readily design a power supply or embedded system. I also am well aware of the safety issues with regard to high voltages and exploding capacitors, and possibly putting a lot of stress on the bridge at startup. I can deal with those.
What I want to know is, would doing this help anything?