Non-Venturi Generator Exhaust Extender Ideas

[Squealers]

Folks,

I will be heading out on a trip to spring training in Florida here in several weeks.

I will be using my genset, and want to be able to safely use it overnight if necessary. I have a few concerns about the exhausting of genset. It dumps out right below my full wall slide.

I want to look at a way to extend it out past the slide, and don't think a venturi styled set-up will work since I would have to clear the extended slide before going up.

I have heard about some folks using a alternative such as an aluminum flexible conduit. If you have used this, or seen this or have ideas about this or anything which may work to get this exhaust out from under my coach, I would love to hear about it. Also wondering about how it attaches to the muffler, and how you would keep it from recoiling, etc.

Thanks for you insight, and hopefully I can get this rectified before I leave next month.

[MrWizard]

For over night sleep, you can't get by with the slide in ?
Then you could use the standard venturi exhaust
I know in some models with bedroom slides, it's almost impossible to use the bedroom with slide in, no accesses to closets and dressers ( I would not own that model )
Just crawling in and out of bed in those models is a chore

[Lantley]

I have been camping/boondocking several times running my portable genset that was on a rear platform of my prior TT. I was all alone on my property and would run the genny all day long. For the most part there was not a problem however on more than one occasion (maybe 2 or 3) the genset set off the CO detector. I was with a buddy one of those times who was in a class C with an onboard genset. His CO detector also went off. We were never overly concerned because there was no one sleeping and everyone was active. Opening the roof vent generally allowed the CO to escape and fresh air in.
The experience was very enlightening. I saw first hand that CO can enter the RV under the right circumstances.
My point is the only foolproof method is to use a Genturi. A breeze in the wrong direction can be disastrous. I have witnessed/experienced the effects of the wind and genset exhaust.
Genturi's are designed to take exhaust gases above roof line for a reason. Relying solely on the CO detector is not enough if you are sleeping.
I had no worries when everyone was awake,but I would not sleep with genset running without Genturi.
While I don't like to take this approach or speak to anyone elses finances in this case I will because people die regularly in RV's from CO poisoning. If you can afford the genset you can afford the extra for a Genturi.
If you plan to sleep in the RV with genset running use a Genturi. Homemade,Craigslist or Camping World find away to have a Genturi.

[mikestock]

I made a couple of Genturies to use with my two Honda EU2000i's. This was necessary to comply with a "stack requirement" for campus football tailgating. The biggest problem was establishing a good method for holding up the weight of the PVC stacks. The total cost for both was about $75.

[Squealers]

Will,

That is excellent advice, and I was advised about re-routing my exhaust via a muffler shop. I'm glad you have had no bad experiences. I exercise the genset monthly but for only 30 minutes. Next time I will let it go for an hour or hour and a half and see if anything alerts.

Once again, thanks!
Keith

[Bob_AnnaMarie]

Skylark wrote:
A good article on a home made Venturi.

Genturu

This is the design I followed. It works great. It gets warm, but not hot to the touch. (Even after an hour's run.) I modified the standoff from the coach, but the rest is what is described here. By cutting the vertical pipe into three pieces it stores easily for transport.

[Skylark]

A good article on a home made Venturi.

Genturu

[willald]

I have a Georgetown, and same predicament as the original poster - Generator and its exhaust is located underneath the living room slideout. Did not like it at first, but have since learned that it really is no big deal.

I researched this same subject also, considered fabricating something, or getting a Genturi and extension like Lantley discussed. Also seriously considered taking it to an exhaust shop and having them re-route the generator exhaust back a few feet so it'd come out just behind the slideout (this was my preferred solution, although we never did it).

Then, one time, when we were 'driveway camping' with the MH at some relative's house and needed to run the genny all night to have air conditioner, etc., I just said what the heck - we have a good CO detector, and there was not anybody outside around us that could be harmed. We just went ahead and ran the generator all night just like it is. No Genturi, no exhaust extensions, nothing.

I was very nervous about it that first night, but guess what? It worked just fine. CO detector never went off, was not a problem at all. Since then, we have done that several times, and it works just fine. Kids actually like it, say the generator's humming helps them go to sleep. That, and it combines two of their favorite things - camping, and staying at Grandparents house. 🙂

You definitely need to make sure your CO detector is in good working order. I also always make sure the rubber seals around the slideout are in good shape, too, whenever we do this (both things you should do, regardless).

Maybe before trying this, you might want to do a test - open the slideout, crank up the generator and let it run for a few hours. See if CO detector ever goes off inside the MH. If fumes are able to get in somewhere around the floor, better to know now rather than when out camping and you have to bail in the middle of the night. If CO detector does go off or you smell exhaust inside, then you can look at maybe doing some of the exhaust ideas being discussed here.

You may well just find like I did, though, that this really is not as big an issue as it may seem.

If you do decide to do something about this, my preference would be to have an exhaust shop re-route the exhaust away from the slide, at which point you can either use a Genturi or fabricate something of your own like it.

[Squealers]

Thanks Lantley, I will investigate!

[Johno02]

My genset exhaust has a small tip extension already, so I just slide the flex tube up over it. Doesn't need a clamp, and the small amount of space around it lets a bit of air get sucked in. When not in use, it just curls up and fits into the closest bin. Doesn't takd hardly any extra room. Did have a lot of wind one time, so I just put a rock on it. Measure your pipe first, the tubing comes in various sizes.

[Lantley]

wa8yxm wrote:

Lantley wrote:
They sell genuine Genturi extension pipe.
No need to invent anything.
With an item as mission critical as a gen turi why make up something that may or may not work.
Genturi extension pipe

I followed the link,, That is an extension or the Vertical Pipe, not for the horizontal pipe

the O/P needs the Horizontal pipe extended...

That said, Thanks, That is info I may well need soem day.

(I tend to store this kind of info for later use in my memory sponge, Occasionall a bit drips out when someoen needs it).

I stand corrected. The horizontal EMT extension is also available.
I have actually purchased one. Sorry I linked the wrong item.
See correction below
correct horizontal extension link

[Squealers]

Noel,

Did you just slip the flexible tubing over the end of your genset exhaust, or do you clamp it on. I'm thinking this may be the best short term solution until I can see if genturi has everything I need to do an extended setup.

I will run out to one of the auto part stores and see what they have this week.

Thanks again.

[Johno02]

it really didn't make that much difference to me at the time, but our generator is on the passenger side midships. for some reason, they routed the exhaust across the underside, and to the rear somewhat, just to make it come out next to the engine exhaust right in front of the rear tires. In our case, that puts it just a bit behind the slide, not directly under it, but still close enough to let exhaust up around it. Therefore, the length of flex pipe. It is enough bigger than the exhaust to allow for venturi effect with no back leakage. Completely solved my problem, cheap and very effective!

[wa8yxm]

As I said, you need an extension pipe to extend the exhaust out to the Gen-Turi,,, Then use the Gen-turi on the slide.. That is how I would do it

Only problem is I often disconnect hot With the Genuine Gen-turi the pipe never gets so hot I can not hold it (One exception, full sun will make it hotter than the generator can) but you would need an OVE GLOVE to handle the extension pipe for a few minutes after disconnect.

You can also use flex pipe for the extension.

I would like to up-size the extension pipe a bit however.

[DSDP_Don]

I think for what you want to do, the flexible pipe would be fine, just add a few feet to clear the slide. I don't know how your manufacturer got away with it, but it's against code to bring a generator exhaust out under a slide.