Rabu, 07 Agustus 2013

How exactly do lawn mower engines work?

best lawn mower of all time on Used craftsman 42 inch riding lawn mower deck with spindles part ...
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Q. I am trying to build a beefed up go kart and I have a lawn mower engine that I can use but lawn mower engines are vertical driven and a go kart is usually driven with a horizontal mount. How do I make the conversion, should I just use a gear box? Also how do the governors work, my budy build one with an old 5hp briggs and stratton and he tore the governor off why did he do this? any ideas?...thanx guys.


Answer
You can buy a gear box to run a vertical shaft engine, but it is probably cheaper to buy a horizontal shaft engine than to try to convert it.

The governor is in place on a lawn mower for 2 reasons -

(1) when you're using the lawn mower, its not practical to keep a hand on the throttle, but the mower needs to operate at different throttle openings to work efficiently. The governor senses load on the engine and reduces or increases throttle opening as needed.
(2) if you were to just run it wide open, you would overheat the engine and reduce the life of it. Also, the maximum speed has to be governed because the blade is only safe to a certain RPM.

On a go cart, you can regulate the throttle manually (in fact, you want to). The governor is not required, and because you are changing the load, you don't really have to worry about over revving the motor to the point that things break.

ps - if the engine came off a riding mower, you might already have a gearbox. If its from a push mower - I would check the price of horizontal shaft units first, you might be pleasantly surprised.

Is it good to run over bunnies with your lawn mower?




Tyler


I ran a bunny over with my lawn mower and killed it yesterday does it harm my blade or does it not harm anything and also is this common to happen?


Answer
Depending on where you live it's pretty common. Some people actually do it deliberately to get rid of the rabbits eating their crops. I doubt it did any damage to your lawn mower.




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