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Message started by Sonny on 01/19/16 at 09:02:42

Title: Mega-thumper, running
Post by Sonny on 01/19/16 at 09:02:42

20,175 cubic inch single, 125hp, 160rpm, 4100 ft-lbs torque. 40 tons. Made in 1903 to drive a sheet metal fab plant.  Apparently it ran in service for 50 years.

Where there's a Willie there's a Waylon...

https://www.youtube.com/watch?v=2MLkbHkxk-g

[media]http://www.youtube.com/watch?v=2MLkbHkxk-g[/media]


Title: Re: Mega-thumper, running
Post by badwolf on 01/19/16 at 11:15:59

If Suzuki built they would have used the same carb as on our Savages!  Hee Hee

Title: Re: Mega-thumper, running
Post by justin_o_guy2 on 01/19/16 at 13:34:56

That's Phabluss! Just Phabluss,,I love it. And I could lay down and take a nap with that thing playing that tune. I have slept between the engines on a drilling rig. It's the least frigid place and it's close enough to not be late for making a connection.
Twenty THOUSAND cubic inches. That's outside of my grasp.

Title: Re: Mega-thumper, running
Post by MMRanch on 01/19/16 at 13:38:31

So :

Most of the 40 TONS  must be FlyWheel !  ;D

Title: Re: Mega-thumper, running
Post by Dave on 01/19/16 at 13:48:14

This is a lot smaller - but I have always loved the Superior Sideshaft engines.  This one is a 15 HP - they come in much bigger sizes and I have seen a 40 HP running.  It would run much faster when it was actually doing work - for shows they slow them way down.

They do sing a soothing "lullaby" to us gearheads! ;)

https://www.youtube.com/watch?v=U1rQ8QTomhg
[media]http://www.youtube.com/watch?v=U1rQ8QTomhg[/media]

Title: Re: Mega-thumper, running
Post by Serowbot on 01/19/16 at 17:36:09

That's not gonna' fit in my frame... :-?

Title: Re: Mega-thumper, running
Post by Kris01 on 01/19/16 at 17:42:11

What's the spinny thingy with the balls?

[Did that come out right?]

Title: Re: Mega-thumper, running
Post by v-pilot on 01/19/16 at 18:02:54


546D766C2F2E1F0 wrote:
What's the spinny thingy with the balls?

[Did that come out right?]

That would be the governor

Title: Re: Mega-thumper, running
Post by Kris01 on 01/19/16 at 18:08:46

Do you know how it governs? I'm just trying to wrap my head around a non-electronic early 1900's governor.

Title: Re: Mega-thumper, running
Post by badwolf on 01/19/16 at 18:40:05

Could control the throttle, like a Briggs lawnmower engine. Some old hit or miss engines, think John Deere style, would hold one of the valves open to control the rpm.

Title: Re: Mega-thumper, running
Post by Art Webb on 01/19/16 at 19:02:44

As the RPM rises, the balls, which are actually weights, would move up and out due to centrifugal force and when they reached the fully up position, they cut spark or fuel, I don't recall which, decreasing RPM
at the full rated RPM, they would be sticking straight out from the shaft on their arms, giving us the term 'balls out' for wide open, that's all it's got
ah, it was fuel, check it out
https://en.wikipedia.org/wiki/Centrifugal_governor
Yes, I'm one of those kids that, on a field trip to an old machine shop (with belt driven tools run off a water wheel) had to be dragged away back to school, protesting every step ofthe way

Title: Re: Mega-thumper, running
Post by Kris01 on 01/19/16 at 19:39:42

Thanks Art. That was very informative. I've always wondered why the term "balls out" had anything to do with speed. That would actually slow me down!  :D  Now I know!

Title: Re: Mega-thumper, running
Post by Sonny on 01/19/16 at 19:46:32

The design of all these governors came from the Watt steam regulator. By mounting the spinning free weights on movable levers, the other end of the levers could finely operate a valve to control steam to the pistons... as rpm rises and centrifugal force pulls the balls out, the levers begin closing a valve.

It's pure genius, and one of the critical items that brought the Industrial Revolution.

Title: Re: Mega-thumper, running
Post by Kris01 on 01/19/16 at 21:15:56

I love how a seemingly huge insurmountable problem is solved in the most simplistic way. That's pure genius!

Title: Re: Mega-thumper, running
Post by Serowbot on 01/19/16 at 21:45:32

"Balls to the walls!".... ;D

Title: Re: Mega-thumper, running
Post by Dave on 01/20/16 at 01:40:23

On steam engines and throttle controlled engines (gasoline, kerosene, oil, natural gas) - the governor controls the throttle position to keep a steady speed.

On Hit & Miss engines the governor holds the exhaust valve open when the engine gets up to speed.  Since the engine just keeps moving air in and out of the exhaust as the piston goes up and down, the engine never creates a vacuum to pull a new fuel/air mixture into the cylinder.  Once the engine slows down enough....the governor releases the exhaust valve, and the cylinder pulls a new fuel/air mixture into the cylinder, and the engine fires as many revolutions as it requires to get back up to speed.  If the engine is not under a load the engine can freewheel for a long time - under load the engine may fire several times before it coasts.

In this video you can see how the top of the cam lobe bumps the exhaust pushrod every rotation of the cam - but only when the engine has slowed down enough does the governor remove the latch so the exhaust valve can operate.  (The intake valve operates on suction and opens when the piston creates a vacuum in the cylinder).

https://www.youtube.com/watch?v=BBL2Gjq8Xus
[media]http://www.youtube.com/watch?v=BBL2Gjq8Xus[/media]

Title: Re: Mega-thumper, running
Post by Art Webb on 01/20/16 at 07:51:56

Balls to the wall is in reference to a similar but slightly different type of mechanical governor developed for use with early diesel engines IIRC that used the same sort of balance balls, but inside the engine
At full extension they almost touched the wall of the engine block

Title: Re: Mega-thumper, running
Post by Kris01 on 01/20/16 at 19:06:43

I've learned more about balls than I cared to know from this thread!

Title: Re: Mega-thumper, running
Post by gizzo on 01/24/16 at 05:40:37

I love me a bit of etymology. Thanks, Art.  8-)

Title: Re: Mega-thumper, running
Post by Art Webb on 01/24/16 at 06:41:52

:)

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