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David Anderson (209.223.227.112)

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Posted on Tuesday, December 26, 2000 - 9:20 pm:   

I'm installing my genset in the front bay of my Eagle. Could you please give me some ideas as the safest way to penetrate through the floor to the bottom of the bus. My pipe is 1.5" diameter. I have 1.25" plywood on top of the aluminum bay bottom that I must pass through. Thanks in advance for the help. David Anderson
Mike Eades (Mike4905) (207.190.10.248)

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Posted on Tuesday, December 26, 2000 - 9:40 pm:   

Get a good keyhole saw and a strong drill/ We used a half inch drill motor. Nothing to it but a lot of push. Just be careful as to not hit anything underneath. Mike
Frank Rowe (Frankrowe) (216.190.243.56)

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Posted on Tuesday, December 26, 2000 - 11:12 pm:   

In mounting a gen set in a closed area, try to plan all the requirements needed. The type of unit, as in air cooled or water cooled, fresh air source, battery location and exhaust placement. Some exhausts are made to exit down thru the floor. Consideration must be made as to the floor covering, if flamable. If the exhaust pipe is 1.5 inch diameter, making a 3 inch hole thru the plywood, and a 2.5 inch hole thru the metal floor. The clean method of making holes is with a portable 1/2 inch drill motor, using 2 different hole saws. First a 1/4 inch pilot hole, at the correct location, next a 3 inch hole saw is used to just make a hole in plywood floor. Finally, a 2.5 inch hole saw cuts a finish hole thru the floor. Making and having a cover for floor hole from the material removed from same place. Using the plywood plug and covering with a 4 inch square piece of aluminium, will allow the hole cover to be reused many times. After exhaust pipe exits, the pipe may be slightly crushed to creat an oval profile. The pipe should also be pointed downward away from the bus floor to the roadway.
Len Silva (Lsilva) (209.208.19.98)

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Posted on Wednesday, December 27, 2000 - 11:57 am:   

I would fabricate or purchase a "thimble" which is basically a pipe within a pipe with pass through ventilation to prevent heat transfer to the surrounding floor material.
Keep in mind that you want some type of quick disconnect method (a 1/1/2" union?) to ease in generator removal if necessary. If your gen is on a slide out then you will want to use flex pipe for the exhaust.
James Stacy (Jimstacy) (166.72.161.60)

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Posted on Saturday, January 13, 2001 - 8:48 pm:   

David,

Be SURE that pipe reaches 4" beyond the body at a mininum. Monoxide is lighter than air and you don't want it released under your coach. The best bet is to run it up through the roof. I used a 3" double wall "Class B" pipe with the exhaust pipe run up through the center. This gives two air spaces and three walls for safety.

The Nov issue of the Escapees magazine tells the story of a couple that bought a gen set and installed it in the front storage bay of their fith wheeler. They started it, turned on the A/C and went to sleep (for the last time). You're only allowed one mistake in this game. FWIW.

Jim Stacy

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