| Author |
Message |
Jerry Campbell (64.12.116.135)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, September 01, 2004 - 5:44 pm: | |
I have a 102A3 that I am installing a 12kw gen. in. What is going on tho is for the air intake and out I will be cutting a rib in the floor of the bay. Do I cut it out or cut the floor and leave the rib. Thanks |
TWO DOGS (65.179.201.90)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, September 01, 2004 - 6:24 pm: | |
leave the rib ! ! ! ! ! ! |
Buswarrior (Buswarrior) (64.229.211.90)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, September 01, 2004 - 7:22 pm: | |
Hello Jerry.
Absolutely leave the rib!
If you look underneath, the ribs run the entire length under the bays, providing the strength to the floors of all the bays. Cutting a chunk out will disrupt the sharing of the load between all of the vertical bulkheads. Whether this creates structural havoc for you down the road is open to massive discussion here on the Board!
For the health of the generator, just be sure you have enough clear area cut out of the flooring to compensate for the rib's blocking a bit of your hole for the airflow you need.
Without proper re-engineering of a support, it is popularly considered best to not mess with the stock coach structure.
happy coaching!
buswarrior |
Marc Bourget (209.142.38.81)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, September 02, 2004 - 3:37 pm: | |
Hey, Jerry,
The ribs contribute to the strength of the whole chassis, not just the floor of the bay!
You've seen the rebar structure for bridge supports before they pour the concrete? Radial design, almost like the hour marks on a clock without numbers when viewed from the end?
Cutting a rib is somewhat (not exactly - depending on which rib you cut) like cutting one or more of the rebars in the bridge support!
Please don't go there!
Wrico has some data on what size ducts and fan specifications to use depending on the size of the genset.
Onward and Upward
Marc Bourget |
Jerry Campbell (205.188.116.135)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, September 02, 2004 - 8:18 pm: | |
I talked to Steve today at EPS, and they said they would like to work with this. So they asked me to bring the bus to Charlotte NC. after I have it installed and they will check the air flow and temps. for me so I will not mess up all the hard work that they did building this one for me and they will know what to do with the next one.I thought that was very good of them and at no $$ |
Stephen Fessenden (Sffess) (65.134.2.238)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, September 02, 2004 - 11:45 pm: | |
If you have place an intake cut out in the floor over a structural rib you can make a fairing (ask an airplane guy) to streamline the airflow around the rib. In general terms, add a rounded but somewhat blunt face on the upstream side of the rib and a longer tail tapering to an edge on the downstream side. You can have as good air flow as without the rib by preventing turbulence at this way. Fairing could be plastic or metal or plaster for that matter. I would still increase the cutout so that the number of clear square inches was right. |