Posted by Jim Wilkins on March 16, 2020, 9:58 pm
> On Mon, 16 Mar 2020 13:56:48 -0400, "Jim Wilkins"
>
>>
>>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.
>>https://www.lowes.com/pl/Spring-nuts-Nuts-Fasteners-Hardware/4294710807
>>
>>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
>>block.
>>
>>
>
> 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.
The Home Depot ceiling tiles I used resist a propane torch flame quite
well. I have some corrugated galvy roofing to cover it from rain or
snow though it hasn't been tested. A weighted tarp would probably
work.
At first I taped the tiles' edges with aluminum foil duct tape, which
didn't stick well enough to be a permanent solution but it protected
them from shredding while I fitted and pop-riveted the sheet steel
channel |_| sections, which were cut and folded from a scrapped
above-ground pool.
I used a shear and brake, but thin sheet steel can be bent neatly
without a brake by clamping it between planks along the bend line and
hammering on a block of wood placed against the free side to spread
the force and sharpen the bend along the bend line.
Posted by hubops on March 16, 2020, 10:13 pm
On Mon, 16 Mar 2020 17:58:23 -0400, "Jim Wilkins"
>> On Mon, 16 Mar 2020 13:56:48 -0400, "Jim Wilkins"
>>
>>>
>>>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.
>>>https://www.lowes.com/pl/Spring-nuts-Nuts-Fasteners-Hardware/4294710807
>>>
>>>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
>>>block.
>>>
>>>
>>
>> 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.
>
>The Home Depot ceiling tiles I used resist a propane torch flame quite
>well. I have some corrugated galvy roofing to cover it from rain or
>snow though it hasn't been tested. A weighted tarp would probably
>work.
>
>At first I taped the tiles' edges with aluminum foil duct tape, which
>didn't stick well enough to be a permanent solution but it protected
>them from shredding while I fitted and pop-riveted the sheet steel
>channel |_| sections, which were cut and folded from a scrapped
>above-ground pool.
>
>I used a shear and brake, but thin sheet steel can be bent neatly
>without a brake by clamping it between planks along the bend line and
>hammering on a block of wood placed against the free side to spread
>the force and sharpen the bend along the bend line.
>
Thanks for the ideas.
Is yours a simple knock-down design when not in use ?
John T.
Posted by Jim Wilkins on March 16, 2020, 11:10 pm
> On Mon, 16 Mar 2020 17:58:23 -0400, "Jim Wilkins"
>
>
> Thanks for the ideas.
> Is yours a simple knock-down design when not in use ?
> John T.
>
The corners of the back wall have angular brackets that extend forward
to brace the sides when assembled, or hold all the panels nested
together for transport and storage. I considered hinging the sides to
the back but the sheet steel I used is too thin to stand the strain.
The unattached top panel lifts off to service the genny.
>
>>
>>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.
>>https://www.lowes.com/pl/Spring-nuts-Nuts-Fasteners-Hardware/4294710807
>>
>>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
>>block.
>>
>>
>
> 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.