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check out this lawn mower engine (kohler engine)

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oldcrow

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Apr 16, 2014
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Lizella, Ga
check this out 12000 rpm v-twin 120hp scroll down to the video. This motor is for the lawn tractor pulls, so i am sure it is only good for a couple of passes. still impressive

https://mwsc.co/
 

Aerowerx

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Dec 1, 2011
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Marion, Ohio
check this out 12000 rpm v-twin 120hp scroll down to the video. This motor is for the lawn tractor pulls, so i am sure it is only good for a couple of passes. still impressive

https://mwsc.co/
Do you mean 1200 RPM?

I find it hard to believe that a reciprocating engine could turn at 12,000 RPM. In the video it sounds more like 1200.
 

cheapracer

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Sep 8, 2013
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6,273
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Australian
Do you mean 1200 RPM?

I find it hard to believe that a reciprocating engine could turn at 12,000 RPM. In the video it sounds more like 1200.
Honda CBR250RR 250cc 4 cylinder production road bike redlines at 20,000 rpm and will spin to 21,000.

Yamaha, Suzuki and Kawasaki all have (or did a few years back) production 250cc in the same class and spin to 19,000rpm.

All have 400cc at 16,000 rpm, 600cc at 14,000 rpm, 750cc at 12,000 rpm.

 

galapoola

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Jun 4, 2017
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84
Location
NJ
Do you mean 1200 RPM?

I find it hard to believe that a reciprocating engine could turn at 12,000 RPM. In the video it sounds more like 1200.
Formula One has been running in the teens for decades out of necessity. Very small displacement engines need huge RPMs to get the horsepower
 

TFF

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Apr 28, 2010
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Memphis, TN
The Hadiesburg, Mississippi airport gets its grass cut for free. Kohler engine factory is across the street. They have a setup to test engines on a rig pulled behind a tractor. Very manicured airport.
 

BJC

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97FL, Florida, USA
The Hadiesburg, Mississippi airport gets its grass cut for free. Kohler engine factory is across the street. They have a setup to test engines on a rig pulled behind a tractor. Very manicured airport.
The privately owned airport where I kept my airplane in NC has a similar arrangement with John Deere.


BJC
 

BJC

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Does anyone know the total flight time on the DA 11?

Are there any other than the prototype?

Thanks,


BJC
 

rtfm

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Jan 3, 2008
Messages
3,234
Location
Brisbane, Australia
Hi,
Many of the local lawnmower racing guys here use the 670cc Briggs, and rev them routinely to about 5k rpm. I questioned the longevity of these engines, and was repeatedly assured that some of these engines had been racing for their third year now without having been opened up. They say, however, that anything over 7k rpm tends to be a bit unreliable. I am seriously thinking of getting them to work on my big block Briggs - 70hp aught not to be a problem.
 

pictsidhe

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Jul 15, 2014
Messages
8,542
Location
North Carolina
Hi,
Many of the local lawnmower racing guys here use the 670cc Briggs, and rev them routinely to about 5k rpm. I questioned the longevity of these engines, and was repeatedly assured that some of these engines had been racing for their third year now without having been opened up. They say, however, that anything over 7k rpm tends to be a bit unreliable. I am seriously thinking of getting them to work on my big block Briggs - 70hp aught not to be a problem.
Not for racing, but try holding it at 75% power and see how many hours it lasts...
 

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