| Author |
Message |
Mark G Murray (24.125.58.124)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 14, 2003 - 5:55 pm: | |
Need suggestions for a flexible exhaust pipe material for the "house " generator. It is a Kohler 4500 watt generator. Thank you, Mark Murray |
Henry R. Bergman, Jr. (Henryofcj) (65.194.145.52)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 14, 2003 - 9:00 pm: | |
Might consider appropriately sized flexible stainless steel exhaust piping. This stuff is expensive...but nice. Proper size important.
You can usually find it at any large well equipped auto parts store or your friendly local farm equipment/small equipment outlet.
Also....maybe try the local scrap metal yard, expecially speciality metal yards. There you would only pay by the pound. Good luck. |
Gary Stadler (Boogiethecat) (68.7.217.217)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 14, 2003 - 11:55 pm: | |
I bought my original flex adapter from John at Auto-Jet. Nice guy, decent prices, great piece of exhaust bellows!
Here's the URL:
http://www.auto-jet.com/images/acc9t.jpg
A few things to know... as delivered, the outer braid is stretched tight, thus the thing can be compressed but not expanded any more than it is. This means that vibration actually gets thru pretty badly. I found that simply putting it between two hunks of wood and sitting on it to compress it a LOT made it compress a small amount beyond it's modulus of elasticity, and come back not quite as long as it originally was, so now the braid was more relaxed and it wiggled easier... all meaning that vibrations would not transfer nearly as badly as if I had not sat on it prior to installation.
I would also recommend buying the longest one they offer (13"), or even getting two to put in series if you're looking for the best vibration supression you can get, because even 'relaxed" these things are somewhat stiff.
.........
That said, I have redone my Onan recently to put the exhaust thru the roof. I found a WONDERFUL braided stainless bellows at a surplus store that is 1-3/4" ID and 3 feet long. It was from a high vacuum system, probably cost $400 when it was new, but I nabbed it for ten bucks. It is PERFECT. Here's a photo-
http://heartmagic.com/zzOnanDays/source/20.html
If you want to see a bunch of photos of my onan install as it currently is (and was), here's a bunch more photos,
http://heartmagic.com/zzOnanDays/
and the text that accompanies the photos is here:
http://www.heartmagic.com/zzOnanDays/Report.html
I'll put it all together in a single page one day soon but for now this is what I have...
Cheers
Gary |
Mark Murray (24.125.58.124)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 15, 2003 - 8:09 pm: | |
Hey ya'll thanks for the solution(s) for my generator exhaust. The BusNut Board comes through again. Mark Murray |
Darryl (68.184.120.141)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 16, 2003 - 11:01 pm: | |
Gary, please tell me about your change-over switch. What is it's rating? Where did you find it?
Thanks,
Darryl |
Gary Stadler (Boogiethecat) (68.7.217.217)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 17, 2003 - 12:47 am: | |
Hi Darryl,
It's an industrial switch made by Kraus and Naimer, Series C42 , and they are "modular" so they can be had in almost as many poles as you'd like, and in as many positions as you need.
They are driven by cams inside....Rating of mine is 63 amps per pole at 440 volts AC so it will be more than a happy camper on 120!! These are availible up to hundreds and even thousands of amps!.
Here's their website:
http://www.krausnaimer.com/0/prod.htm
I doubt they are cheap but they will certainly do the job well. I got mine off of Ebay for about $25 plus the shipping. They show up occasionally in the Controls and switches section:
http://listings.ebay.com/pool1/plistings/list/all/category11806/index.html?from=R4
So mine ended up being three poles, two positions.
Hmmm, lets see... how I hooked it up ...
Because I don't want to run both roof AC's from the same winding on the gene, I hooked roof air #1 up so when I'm on shore power it's hooked to the shore power input, but when I'm on the generator, it's hooked to the second winding of the gene (L2), while the rear AC and the rest of the electrical system is hooked to the gene's first winding (L1).
The second pole switches "hot" of my breaker panel to either shore power or L1 on the gene (the gene has two 30 amp circuits I believe, both are the same phase)
The third pole switches Neutral.
Since I don't have an inverter to worry about, the ground vs neutral thing takes care of itself. Neutral is grounded inside the genset. When I'm on shore power, shore neutral connects to the bus panel's neutral as it should, but the chassis is not hooked to neutral. But when I'm switched to the Gene, ground and neutral are hooked together as they should be, at the genset.
If you did have an inverter, these switches can be ordered with many more poles and three positions. It would take a little thinking how to set it up with the cams and poles, but the switch would easily handle it all.
Here's a wiring diagram of how I hooked mine up:
http://www.heartmagic.com/zzOnanDays/BusWiring.jpg
That's it...
Cheers
Gary |
Gary Stadler (Boogiethecat) (68.7.217.217)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 17, 2003 - 1:38 am: | |
Darryl- I hate to do this considering the last week's uprising about ebay, but I will anyway because I was asked.
Here's one I found on ebay for you by searching "rotary switch" in the specific category I posted above in my last post to you.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2516325079&category=11806
This seller is evidently one of those AOL guys who doesn't have a clue about how to host or label his images properly, so in case you can't see his photos (which will make a lot of bidders not bid, better for you!), I've placed them on my site for you here:
http://www.heartmagic.com/zzOnanDays/3lg.jpg
http://www.heartmagic.com/zzOnanDays/3lh.jpg
No guarantees that this switch will do what you need to, but it's evidently four poles, three positions, the voltage and current ratings are right, it's about the right size and it looks like a good start. Often times you can take them apart if you're handy and reconfigure how the contacts work, to fit your needs. Since it looks like this one was made to reconfigure 3 phase wiring, it may have to be slightly modified but I have a good feeling it will work for you. It's going to be a good deal money-wise I'm sure!
Cheers
Gary |
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