[phantompinecone] has an electric mower that worked great for about 4 seasons, and then the battery started to die. A replacement was installed but it started being a pain after the first season. Since the battery was brand new (and probably costly too) there must be something else.
Checking the brushes, which were fine, the next logical place was the switch.These mowers are just a battery, motor, and switch. Yanking it apart there was indeed a problem, they were chewed up and corroded, not allowing full electrical contact. So [phantompinecone] replaced the simple mechanical switch with a MOSFET.
Electrically there is an IRF1405 MOSFET, some resistors to pull signals around and a couple diodes to A) keep the back emf from the motor in check, and B) drop the voltage going into the fet from 24volts to 12. Problem solved, and the motor should not have anymore trouble caused by a junked up switch.
There’s the quiet serenity of paddling through the backwoods in a canoe, and then there’s this. It’s a lawnmower motor powered canoe that comes complete with steering wheel, throttle, and a stereo system. To keep the craft balanced the driver rides in the front seat while the motor is hanging off the stern of the boat. The biggest trick is not swamping the thing while getting the motor running, but future plans do include adding an electric starter. There is a kill switch for safety and it appears that top speed will not cause any stability issues. It’s hard to tell for sure from the video after the break, but it sure does seem to be loud!
It’s no secret that we’re gear heads at heart. Our transportation hacks category is full of unfortunate machinery like [Steven Laurie]’s motor art, weed whacker bikes, and electric motorcycles of all types. Even we have trouble justifying the existence of this monster truck style lawn tractor though. We haven’t found a project site for it and can’t help but wonder what kind of person would build such a thing? It’s obviously the type that would own a car sized American flag. We just need to realize with the popularity of lawn mower racing, this sort of thing was bound to happen.
You will need a battery-powered lawnmower for this, as well as a 12-volt solar charger with a car lighter jack. This easy hack mainly involves a small amount of work with the wiring; the car lighter jack must be removed from the solar panel so that the wires can be attached to the batteries. Yeah, that’s it. We’d love to see a more elegant solution since the way it is now you have switch the wiring from parallel to series everytime you want to mow.