I've seen all sorts of mufflers fangled on to generators. Almost all of
them looked like wither J.C. Whitney/Autozone/Harbor Freight jobs, or
else re-cycled motorcycle exhausts. I don't know what they did to the
performance of the generator motor, but the generator(s) continued to
produce power and they were quiet(er).
Just as much bang-for-the-buck is building an enclosure for it--the
exhaust is a noise source, but so are the other moving parts. Even a
cardboard box can work wonders, so putting some time and thought and
actual materiel into the job (and a muffler) can make even the loudest
generator very much quieter. Just remember to provision for air flow.
On 12/18/2011 9:54 AM, John Innis wrote:
> With a little detective work, you should be able to find a quieter exhaust
> system that will bolt right up to that motor. I would start with a local
> lawn and garden shop, take them the model and spec number off the motor and
> tell them what you want to do. Ask if they know of other generators that
> used the same series of engine, especially ones that went into RV's. You
> might also look at some of the slip on systems for ATV's and UTV's as these
> tend to be pretty quiet. As a last resort you might try a muffler off a
> gas powered golf cart.
>
> On Sun, Dec 18, 2011 at 8:07 AM,<eric@megageek.com> wrote:
>
>> I asked this question before, but I think it got lost in the another
>> discussion.
>>
>> I have a very good generator for back up power. The problem is that it is
>> pretty loud.
>>
>> Can I remove the exhaust it came with, and mod up a nice exhaust into a
>> small (or large) car muffler? Since this is only a 12HP B&S motor, we
>> aren't talking tuned engines, so I'm guessing back pressure isn't
>> critical.
>>
>> Any ideas? What would you do if you needed to quiet this system.
>>
>> Note, I don't need the portability of the unit, so if I had a BHE (Big
>> Honking Exhaust) sticking out of the cage, that is fine.
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