Hybrid Car – More Fun with Less Gas

Aurora 6500 diesel

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Posted by hubops on March 15, 2020, 5:40 pm
Wondering if anyone here is familar with this unit
  < or similar small deisel units >
How noisy are they compared to gasoline ?
  < both being 3600 rpm >


There's one coming up at a local auction sale.
  John T.

Posted by ads on March 16, 2020, 3:56 am
On Sun, 15 Mar 2020 13:40:31 -0400, hubops@ccanoemail.ca wrote:

From some research I did a couple years ago,  
the noise is comparable to a gas gen unless there is extra sound
deadening added.  The life of an air-cooled diesel is several times
longer than the life of a similarly-sized gas engine but mostly
because they have to be built better to handle the higher compression.

Posted by hubops on March 16, 2020, 2:20 pm
 On Sun, 15 Mar 2020 22:56:17 -0500, ads wrote:

 Thanks.   I'm not real keen to buy another noisy generator,  
but I might visit the auction out of curiosity .. in case it sells
really cheap ..
  John T.

Posted by Jim Wilkins on March 16, 2020, 5:56 pm
I built a fairly effective generator sound-reducing enclosure from 2'  
x 4' fireproof acoustic ceiling tiles, rimmed with sheet metal |_|  
strips to keep the edges from crumbling. It's assembled with thumb  
screws and U spring nuts.

The side facing away from the street is open to let cooling air in and  
the exhaust out. I tried muffling the exhaust with fiberglass pipe  
insulation and found that most of the noise comes from the engine  

Posted by hubops on March 16, 2020, 6:48 pm
 On Mon, 16 Mar 2020 13:56:48 -0400, "Jim Wilkins"

  Over the years, I've thought about a makeshift sound barrier  -
- usually I talk myself out of it when I start to consider all the
fire/wind/rain/snow  possibilities  ...  
 I have heard that engine noise is a major factor  -  
  - not just exhaust noise.
  John T.

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