Got a new 7500 W generator for the shop and want to put it inside the shop.
It's in a frame with wheels on it. Trying to decide best way to vent the
exhaust. Exhaust pipe connects to the engine with a typical diamond-shaped
flange with two bolt holes in "wings" of the flange. Pipe runs about 4
inches into a large box-shaped muffler. Exhaust leaves the muffler through
a hole (about 2 inches diameter) on one side. Shop is wood frame with T1-11
wood siding.

First thought about cutting the exhaust pipe, attaching flexible SS exhaust
piping which would run up the inside wall and exit the wall fairly high.
Would have to have stand-offs on the wall and an insulated exit port through
the wall. Would probably need to put automotive type muffler in series too.

But, would like to be able to move the generator for servicing and field
work. So, another idea is to have a short spring-loaded and/or padded
exhaust pipe that goes straight through the wall at the height of the
muffler exit on the generator. Then I could wheel the generator up to the
exhuast pipe, push it toward the wall so the muffler exit is snug against
the exhaust pipe, and fire her up. What's the best way to get a good seal
between the exhaust pipe and the muffler or is it just a bad idea try to get
a seal that would be based solely on pressure? I would mount a CO detector
above the generator just in case.

Any ideas?

Mike

In article ,
Michael Bruss wrote:

Got a new 7500 W generator for the shop and want to put it inside the shop.

No, you don't. They are loud. You'll be a _lot_ happier if you build a
"doghouse" for it outside. Less hazardous, too, especially if it's
gasoline powered.

First thought about cutting the exhaust pipe, attaching flexible SS exhaust
piping which would run up the inside wall and exit the wall fairly high.
Would have to have stand-offs on the wall and an insulated exit port through
the wall. Would probably need to put automotive type muffler in series too.

Something like that can work - you can transition to stovepipe or
gas-vent pipe to make use of standard materials you can buy at the
hardware store to get it out of the building safely.

Your other idea seems pretty iffy - you'll have significant exhaust
leakage, I think.

You want a CO detector (one with numeric readout, preferably) in either
case.

--
Cats, Coffee, Chocolate...vices to live by

Michael Bruss writes:

Trying to decide best way to vent the exhaust.

Seems much easier and quieter and less risky to pipe in electrons than pipe
out exhaust. Why does this have to be inside?

On Thu, 6 May 2004 16:19:27 +0000 (UTC), Michael Bruss
shouted from the rooftop:

Got a new 7500 W generator for the shop and want to put it inside the shop.

Don't. Unless the engine has a real good crankcase ventilation system
(most don't) the crankcase fumes will kill ya.

-Carl
"An honest man doesn't need a long memory"- Jesse Ventura

Ecnerwal wrote:
: In article ,
: Michael Bruss wrote:

: Got a new 7500 W generator for the shop and want to put it inside the shop.

: No, you don't. They are loud. You'll be a _lot_ happier if you build a
: "doghouse" for it outside. Less hazardous, too, especially if it's
: gasoline powered.

Yeah, I think I will do the doghouse thing. More work, but it'll be worth
it.

:
: First thought about cutting the exhaust pipe, attaching flexible SS exhaust
: piping which would run up the inside wall and exit the wall fairly high.
: Would have to have stand-offs on the wall and an insulated exit port through
: the wall. Would probably need to put automotive type muffler in series too.

: Something like that can work - you can transition to stovepipe or
: gas-vent pipe to make use of standard materials you can buy at the
: hardware store to get it out of the building safely.

: Your other idea seems pretty iffy - you'll have significant exhaust
: leakage, I think.

: You want a CO detector (one with numeric readout, preferably) in either
: case.

: --
: Cats, Coffee, Chocolate...vices to live by