Onan Air Duct

[mike finnicum]

Onan Exhaust line up ---

I installed (actually Jeff Sirum) my duct and the Genset lined up
perfectly with the opening. Jeff only had to trim about 1/4" x 1/4"
area. He first drilled a small hole and then used a file to trim the
area in the upper forward corner. It was needed as the vent is square
while the door cutout is "rounded" in the corners - he had to make the
one corner "square".

I wonder why the difference in lining up - Perfect line up on mine vs
Paul's being off by 2". My coach is a 78, GenSet is the orig 6kw.

Are all of you prepared for the fiberglass work you'll have to do to your
compartment door in order to mount the deflector??

The generator cooling air outlet does not line up with the original notched
area along the bottom of the door. They are about two inches offset from
each other.

Paul Bartz
>>

I just discovered that tonight when doing some reconnaissance on the job.
I
am rethinking the air duct. May go for remote kill switch located at
driver
console and shut down Onan (if running) when leaving pavement.

Thanks,

Fred Hudspeth

 

[bartz paul]

Mike:

I made a deflector by laying it out on a file folder from the dimensions
published in an early issue of the GMCMI newsletter. Cut out the pieces and
taped them together to form the deflector. In fact I modified the design to
eliminate the back, inside 90 degree corner by configuring it with a radius
having the same dimension as the throat depth of the deflector. The radius
was eliminate turbulence caused by the 990 degree inside corner.

When I did a test fit, I found the offset problem on mine, a 78 Royale.

Paul Bartz

From: Mike Finnicum [mailto:songtekpub]
Sent: Tuesday, November 09, 1999 8:56 AM

Onan Exhaust line up ---

I installed (actually Jeff Sirum) my duct and the Genset lined up
perfectly with the opening. Jeff only had to trim about 1/4" x 1/4"
area. He first drilled a small hole and then used a file to trim the
area in the upper forward corner. It was needed as the vent is square
while the door cutout is "rounded" in the corners - he had to make the
one corner "square".

I wonder why the difference in lining up - Perfect line up on mine vs
Paul's being off by 2". My coach is a 78, GenSet is the orig 6kw.

Are all of you prepared for the fiberglass work you'll have to do to your
compartment door in order to mount the deflector??

The generator cooling air outlet does not line up with the original notched
area along the bottom of the door. They are about two inches offset from
each other.

Paul Bartz
>>

I just discovered that tonight when doing some reconnaissance on the job.
I
am rethinking the air duct. May go for remote kill switch located at
driver
console and shut down Onan (if running) when leaving pavement.

Thanks,

Fred Hudspeth

 

[scott shean]

Fred, don't forget to add remote driver switches for all the 110v
loads. You don't want to shut the generator down with a load on
it.

Scott Shean
Baton Rouge, LA
78 Royale

>Paul,
>
>I just discovered that tonight when doing some
>reconnaissance on the job. I
>am rethinking the air duct. May go for remote kill
>switch located at driver
>console and shut down Onan (if running) when leaving pavement.
>
>Thanks,
>
>Fred Hudspeth
>