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Old 11-11-2019, 12:27 PM   #1
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Making an Onan Q Generator Quieter - Mike Mas

Hello Guys - I thought I would share one of my recent projects in making your RV generator a bit quieter. For the most part generators which have very respectable noise levels today, but there is always room for improvement. Heres a quick article on making your generator a bit easier to live with.

Please click the link below for the article:

http://rotory.com/transit/noise/

Enjoy Mike

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Old 11-11-2019, 10:54 PM   #2
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The other thing you can do is make a gen-turi exhaust so that the bulk of the exhaust fumes and noise is routed up, over your MH.
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Old 11-12-2019, 08:29 AM   #3
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The other thing you can do is make a gen-turi exhaust so that the bulk of the exhaust fumes and noise is routed up, over your MH.



Thanks for the reply - is that exhaust sort of what I've seen on a Prevost bus where they have a stack that goes up to the roof?


Thanks
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Old 11-12-2019, 05:24 PM   #4
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Seeing as how some have had trouble with these generators overheating and shutting down while running them on the road i hot weather, my concern would be making it too hot when running. What has been your experience?
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Old 11-12-2019, 05:28 PM   #5
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Seeing as how some have had trouble with these generators overheating and shutting down while running them on the road i hot weather, my concern would be making it too hot when running. What has been your experience?

Thanks for the reply - it appears as if you just had a mechanical problem perhaps fuel related or maybe even a filter.



These little generators are bullet-proof they use air cooling so there is no chance of over-heating. As long as the engine turns the air is forced through the engine.


Thanks
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Old 11-12-2019, 10:04 PM   #6
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Thanks for the reply - is that exhaust sort of what I've seen on a Prevost bus where they have a stack that goes up to the roof?


Thanks
Here's a picture of what I made and used at the Albuquerque balloon fiesta this year. Fumes went above all the MHs and the sound went up the stack also. We used to be plagued with the diesel exhaust going under our DS slide and sneaking in. With the DIY gen-turi we could have the windows open...

The stacks are two 4' sections of 3" ABS, dry joined with an ABS coupling.
The wall brackets are Harbor Freight double suction handles, the metal tube is a 1-1/4" galvanized EMT 90 which is held on with a pin clip, that also hold the stock chrome exhaust tip when the gen-turi is packed away.
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Old 11-13-2019, 06:25 AM   #7
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Here's a picture of what I made and used at the Albuquerque balloon fiesta this year. Fumes went above all the MHs and the sound went up the stack also. We used to be plagued with the diesel exhaust going under our DS slide and sneaking in. With the DIY gen-turi we could have the windows open...



The stacks are two 4' sections of 3" ABS, dry joined with an ABS coupling.

The wall brackets are Harbor Freight double suction handles, the metal tube is a 1-1/4" galvanized EMT 90 which is held on with a pin clip, that also hold the stock chrome exhaust tip when the gen-turi is packed away.
Nice Venturi!
What did it cost you in material?
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Old 11-13-2019, 06:54 AM   #8
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Nice Venturi!
What did it cost you in material?
On sale today at Amazon - $94.29


https://www.amazon.com/Camco-44461-G...s%2C132&sr=8-3
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Old 11-13-2019, 07:28 AM   #9
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Or get all the materials at any lowes or Home Depot for under $20
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Old 11-13-2019, 07:41 AM   #10
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Quote:
Originally Posted by Domo View Post
Here's a picture of what I made and used at the Albuquerque balloon fiesta this year. Fumes went above all the MHs and the sound went up the stack also. We used to be plagued with the diesel exhaust going under our DS slide and sneaking in. With the DIY gen-turi we could have the windows open...

The stacks are two 4' sections of 3" ABS, dry joined with an ABS coupling.
The wall brackets are Harbor Freight double suction handles, the metal tube is a 1-1/4" galvanized EMT 90 which is held on with a pin clip, that also hold the stock chrome exhaust tip when the gen-turi is packed away.

Super nice set-up - At first site I was wondering how you stored it very cleaver idea - thanks for sharing!


Mike
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Old 11-13-2019, 07:43 AM   #11
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Nice Venturi!
What did it cost you in material?
It was $49 (not including tax and my Veteran discount at Home Depot).

I opted to build my own after reading how a few folks had the commercial unit break due to quality and strength issues.

Edit - oops, the length of each section is 5' as I cut a 3" X 10' in half, not 4'.
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Old 11-13-2019, 08:43 AM   #12
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Here's a picture of what I made and used at the Albuquerque balloon fiesta this year. Fumes went above all the MHs and the sound went up the stack also. We used to be plagued with the diesel exhaust going under our DS slide and sneaking in. With the DIY gen-turi we could have the windows open...



The stacks are two 4' sections of 3" ABS, dry joined with an ABS coupling.

The wall brackets are Harbor Freight double suction handles, the metal tube is a 1-1/4" galvanized EMT 90 which is held on with a pin clip, that also hold the stock chrome exhaust tip when the gen-turi is packed away.


I was at the balloon fiesta also. 1800 or so rvs tucked into that field ... almost all ran generators, and the vast majority did not have genturies. One or two nights got a little too thick with exhaust fumes.

One person across from me had a great idea: he had bought a commercial genturi, but used a little scissor jack underneath the metal at the bottom to support the weight of the thing (instead of allowing the exhaust pipe from the genny taking the load). I thought that is an excellent idea, which i will copy!
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Old 11-13-2019, 11:40 AM   #13
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Originally Posted by Idleup View Post
Hello Guys - I thought I would share one of my recent projects in making your RV generator a bit quieter. For the most part generators which have very respectable noise levels today, but there is always room for improvement. Heres a quick article on making your generator a bit easier to live with.

Please click the link below for the article:

http://rotory.com/transit/noise/

Enjoy Mike

When I rebuilt the stator rotor assembly on my Onan I installed automotive heat resistant sound absorbing foam inside the generator box. Then reinstalled the Onan.
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Old 11-13-2019, 04:37 PM   #14
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I was at the balloon fiesta also. 1800 or so rvs tucked into that field ... almost all ran generators, and the vast majority did not have genturies. One or two nights got a little too thick with exhaust fumes.

One person across from me had a great idea: he had bought a commercial genturi, but used a little scissor jack underneath the metal at the bottom to support the weight of the thing (instead of allowing the exhaust pipe from the genny taking the load). I thought that is an excellent idea, which i will copy!
The weight is taken by the tow double suction cup gizmos - no strain on the Onan exhaust - I was careful about that... But - yes, it worked great! Anything that can reduce noise and the fumes in the face is a great addition to the rig.

And, to the poster curious of how we store the DIY gen-turi, well, using the same "hooks" that sit on the suction cups, I simply hook onto my ladder and then bungee the bugger to keep it from jumping up and away - yes, we look like Jed Clampett moving his family. As a matter of fact, we are looking for a small rocking chair and stuffed grandma to affix to our rear end after a few forum folks informed us that anything attached to the rig would make us look like the Clampetts! --->>

--->>> LOL - glad someone is keeping score, we're past that - we're just glad we're not smelling roots and get to travel and meet everyone with smiles on their faces!
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