Onan or Generac?

Since Rick's already mentioned the Generac 36G that I suckered him into,
here's the album that probably did him in.
http://www.gmcmhphotos.com/photos/g3781-generac-impact-36g-plus-ii-installation.html

It was fine until about 75 hours of operation, then it gave trouble which I
don't even want to think about, much less discuss now. To get rid of it, I
found, on sale at Lowes, a TroyBilt portable generator. Here's its
installation album:
http://www.gmcmhphotos.com/photos/g5330-troybilt-generator-installation.html

That was a somewhat more difficult installation, but turned out better.
The performance has been VASTLY better. I recently changed the oil in it,
probably for the first time since installing it in 2009. And that's the
ONLY thing I've done to it maintenance-wise since completing the
installation. It ALWAYS cranks right up, takes any load it's offered
without even surging, and runs until I shut it down, which has been a
couple of days later during a storm some years ago. It IS noisy, even with
two mufflers, but since we mostly use it during noon stops, it doesn't
really bother us nor neighbors ('tho' we did once in a campground have
neighbors behind us ask me to move my truck back between us to deflect some
of the sound). I wouldn't go back to any previous generator.

Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton, Troy-Bilt APU, etc., etc., etc.
www.gmcwipersetc.com

On Sun, Sep 22, 2019 at 7:06 PM Richard Denney via Gmclist <

> Ha! If GMC made a 23’ flatbed trailer, maybe.
>
> A local ham club I play radio with was gifted a 30KW Kohler, which used a
> (large) four-cylinder diesel. We put it on a flatbed trailer, installed a
> tank, restored it, and for a while we used it to power a contesting site
> occupied by 20 people, all with campers and RVs, and not to mention the
> 1500-watt radios. Tom Phipps will remember that. That trailer required a
> substantial tow vehicle.
>
> But what fits in a 23’ coach is the $64 question. Nothing does. That
> Generac Impact 36G was the only one that was designed for RV use. The
> Impact “Plus” version was not that bad, once the birthing issues were
> resolved. But I use it about two dozen hours a year, while Johnnie’s
> radio-station gig trucks probably did that every week for 40 weeks a year.
> Actually, it’s less than that—I don’t think I have 200 hours on it yet.
>
> 26’ coaches present more options.
>
> Rick “who designed his generator compartment to provide relatively easy tip
> access” Denney
>
> On Sun, Sep 22, 2019 at 6:08 PM Emery Stora via Gmclist <

>
> > Will that fit in a 23’ GMC ? :) :)
> >
> > --
> '73 X-Glacier 230 "Jaws"
> Northern Virginia
> Offlist email: rick at rickdenney dot com
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
So let me ask this then....if one can fabricate etc and one was to up the genset size to reduce the chances of over working it would just picking
anything out in the market work? Or is there anything specific one should be looking for?

Is a generator a generator or is an Onan etc really different than let's say a Masrercraft?
--
Rich Mondor,

Brockville, ON

77 Hughes 2600
 
Oh, there's lots to consider. Foremost is probably the 1800 rpm of the
Onan vs 'most everything else running at 3600 or so. RPM=Decibels. With a
23' and an already installed compartment, size was uppermost in my mind
when searching. Then there was price. Since knew from experience with the
Generac that I might have to replace it again fairly soon, that was very
important. I don't remember their prices, but I do know the TroyBilt cost
less than 1/2 what the Generac did -- and it's lasted about 5 times as
long! Since I haven't paid any attention to the features, sizes, nor
prices of the Hondas, modern Onans, etc., nothing I can add there.

Ken H.

On Sun, Sep 22, 2019 at 8:11 PM tonka6cuda6--- via Gmclist <

> So let me ask this then....if one can fabricate etc and one was to up the
> genset size to reduce the chances of over working it would just picking
> anything out in the market work? Or is there anything specific one should
> be looking for?
>
> Is a generator a generator or is an Onan etc really different than let's
> say a Masrercraft?
> --
> Rich Mondor,
>
> Brockville, ON
>
> 77 Hughes 2600
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
Keep in mind that for some of the lower cost gensets, finding parts later on will be frustrating. The models and cofiguarations seem to change frequently, and I’d be afraid of the difficulty finding a replacement part if the unit fails while on the road. This concern alone gives strong justification for sticking with the OEM onan, or a common Honda EV. The OEM onan is well known by the vendors, and most failure prone parts are kept in stock. Same for the Honda EV series.

Les Burt
Montreal
'75 Eleganza 26'

>
> Oh, there's lots to consider. Foremost is probably the 1800 rpm of the
> Onan vs 'most everything else running at 3600 or so. RPM=Decibels. With a
> 23' and an already installed compartment, size was uppermost in my mind
> when searching. Then there was price. Since knew from experience with the
> Generac that I might have to replace it again fairly soon, that was very
> important. I don't remember their prices, but I do know the TroyBilt cost
> less than 1/2 what the Generac did -- and it's lasted about 5 times as
> long! Since I haven't paid any attention to the features, sizes, nor
> prices of the Hondas, modern Onans, etc., nothing I can add there.
>
> Ken H.
>
> On Sun, Sep 22, 2019 at 8:11 PM tonka6cuda6--- via Gmclist <

>
>> So let me ask this then....if one can fabricate etc and one was to up the
>> genset size to reduce the chances of over working it would just picking
>> anything out in the market work? Or is there anything specific one should
>> be looking for?
>>
>> Is a generator a generator or is an Onan etc really different than let's
>> say a Masrercraft?
>> --
>> Rich Mondor,
>>
>> Brockville, ON
>>
>> 77 Hughes 2600
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
 
You and I both paid about $1500 for those Generacs, from some funky
Internet reseller who wasn’t a Generac dealer and who offered no help. But
that was half the price of any other dedicated RV generator, none of which
would have fit anyway.

This album was about soundproofing, but it contains my best pictures of the
Generac.
http://www.gmcmhphotos.com/photos/g4438-soundproofing.html

It was a better deal for me than for you. But I did have to make a big
repair on mine at maybe 100 hours. It wasn’t an expensive repair,
particularly. Took me a couple of hours and a $20 part.

I remember what made it the “plus” model—the dedicated inverter and
electronic engine control.

The start logic doesn’t work very well—I often have to hit the start button
four or five times to get it to stay running, though the automatic transfer
switch helps with that.

But my Onan was blowing oil and had a cracked exhaust manifold—there was a
charred area in the compartment. It was going to need a complete overhaul
with lots of new parts. The guy I gave it to used it at a hunting cabin,
where those aren’t issues.

Rick “recalling the back end of the coach covered in oil grudge after
generator use on the highway” Denney

On Sun, Sep 22, 2019 at 9:40 PM Ken Henderson via Gmclist <

> Oh, there's lots to consider. Foremost is probably the 1800 rpm of the
> Onan vs 'most everything else running at 3600 or so. RPM=Decibels. With a
> 23' and an already installed compartment, size was uppermost in my mind
> when searching. Then there was price. Since knew from experience with the
> Generac that I might have to replace it again fairly soon, that was very
> important. I don't remember their prices, but I do know the TroyBilt cost
> less than 1/2 what the Generac did -- and it's lasted about 5 times as
> long! Since I haven't paid any attention to the features, sizes, nor
> prices of the Hondas, modern Onans, etc., nothing I can add there.
>
> Ken H.
>
> On Sun, Sep 22, 2019 at 8:11 PM tonka6cuda6--- via Gmclist <

>
> > So let me ask this then....if one can fabricate etc and one was to up the
> > genset size to reduce the chances of over working it would just picking
> > anything out in the market work? Or is there anything specific one should
> > be looking for?
> >
> > Is a generator a generator or is an Onan etc really different than let's
> > say a Masrercraft?
> > --
> > Rich Mondor,
> >
> > Brockville, ON
> >
> > 77 Hughes 2600
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
'73 X-Glacier 230 "Jaws"
Northern Virginia
Offlist email: rick at rickdenney dot com
 
Are any of the units direct drive or are they belt? Sorry guys I know big gensets not these.
--
Rich Mondor,

Brockville, ON

77 Hughes 2600
 
Emory, I knew what you were saying, I just twisted it a bit :)

http://www.gmcmhphotos.com/photos/g6827-new-genset.html

Here's the album, wherein I installed the Freight, Harbor genset. It's a 7.5 Chinese kilowatt unit. It was the smallest one with an electric
self-commencer, which I wanted. The way it installs, the yank cranker is also available in times of dead batteries. I fabricated the exhaust and
hung the muffler under the back bumper. I would do three things differently if I did it again.
First, under the bumper was a poor choice for the muffler, it's too low. I'd relocate it. Second, it wants a 12V solenoid and a spring to pull the
choke on when starting and off running. Third I'd remote the air filter box, at which point everything needed for service would be easily accessible.
(You might want a different place to get crankcase pulses to run the fuel pump, I didn't want to drill into it anywhere) As installed, it worked
fine, in the chill you hadda go out and manually choke it. You might want to simply move the 220 socket to an accessible point for the shore plug
instead of wiring it in as I did after sawing up the control panel to fit. Installation took the genset, exhaust stuff, pulse fuel pump (Do NOT use
an electric pump with one of these), a bit of fuel hose and filter, and some Kendorf to make the mounts. Took a couple of days since I was cutting
and forming to fit as I went. This system saves the original shock mounts the set is mounted on. As a side benefit, I now have about a five gallon
gas tank with shutoff for rescuing coaches and a spiffy engine carrier.
I got the set at a discount, all up maybe 600 - 650 bucks. Spins the A/C, microwave, coffeepot and evrything else without a strain.

--johnny
--
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
 
Solved this one too....just finished picking up a Honda EV6010....guess i just created another project for myself... :(
--
Rich Mondor,

Brockville, ON

77 Hughes 2600
 
That's not a solution. That is admitting defeat. (Grin) You let that 1930
technology beat you down.
When the electronic control board goes haywire in that Honda (it is
already unsupported by Honda), and it will, where are you going to go for
help? Fix the ONAN. You will learn a great deal, and it will outlast you.
Just my opinion, yours may vary a bit.
Jim Hupy
Salem, Oregon

On Sun, Oct 20, 2019, 11:52 AM tonka6cuda6--- via Gmclist <

> Solved this one too....just finished picking up a Honda EV6010....guess i
> just created another project for myself... :(
> --
> Rich Mondor,
>
> Brockville, ON
>
> 77 Hughes 2600
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
> That's not a solution. That is admitting defeat. (Grin) You let that 1930
> technology beat you down.
> When the electronic control board goes haywire in that Honda (it is
> already unsupported by Honda), and it will, where are you going to go for
> help? Fix the ONAN. You will learn a great deal, and it will outlast you.
> Just my opinion, yours may vary a bit.
> Jim Hupy
> Salem, Oregon
>
> On Sun, Oct 20, 2019, 11:52 AM tonka6cuda6--- via Gmclist <

>
> > Solved this one too....just finished picking up a Honda EV6010....guess i
> > just created another project for myself... :(
> > --
> > Rich Mondor,
> >
> > Brockville, ON
> >
> > 77 Hughes 2600
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

Didnt have anything to start with or i wouldn't have been in this predicament....lol. Sad part is we will probably only use it to run the heat pump
units and not much else.

--
Rich Mondor,

Brockville, ON

77 Hughes 2600
 
My beloved PO put in an Onan Emerald Plus 6500 watt genset, and I'm SO glad he did (he also sold it with a whopping 50 hours on the clock).

It sure seems to be a huge improvement - about 200 pounds (!) lighter, and presumably quieter and very reliable. It's considerably smaller than the
green giant it replaced, though I doubt it'd fit in a 23' generator compartment. The installation required messing around with the slide-out, so now
I think I'd have to disconnect the exhaust to pull it all the way out, and I think use a floor jack. OTOH, I haven't had to do anything other than
change the oil, so that's all a moot point.

The photo of the generator compartment is at the bottom of this page (look for the NACA ducts the PO cut in the generator door for better cooling when
running one of the rooftop A/C units while rolling)...

http://habcycles.com/gmcmh.htm
--
Mark Hickey
Mesa, AZ
1978 Royale Center Kitchen
 
Mark, did you use a sliding tray, or use some type of sliding rails for your Emerald? I have a similar generator (Onan 4.0 BFA) on a fixed shelf but would love some type of a slide in-out for maintenance.

-Dave
1978 Transmode near Pittsburgh

>
> My beloved PO put in an Onan Emerald Plus 6500 watt genset, and I'm SO glad he did (he also sold it with a whopping 50 hours on the clock).
>
> It sure seems to be a huge improvement - about 200 pounds (!) lighter, and presumably quieter and very reliable. It's considerably smaller than the
> green giant it replaced, though I doubt it'd fit in a 23' generator compartment. The installation required messing around with the slide-out, so now
> I think I'd have to disconnect the exhaust to pull it all the way out, and I think use a floor jack. OTOH, I haven't had to do anything other than
> change the oil, so that's all a moot point.
>
> The photo of the generator compartment is at the bottom of this page (look for the NACA ducts the PO cut in the generator door for better cooling when
> running one of the rooftop A/C units while rolling)...
>
> http://habcycles.com/gmcmh.htm
> --
> Mark Hickey
> Mesa, AZ
> 1978 Royale Center Kitchen
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
 
I got thte point, Emery. I figured the only place to put it would be up front, requiring the current engine to leave. And it'd still be too large.

As to what will fit a 23', the Onan 4KW will fit. Several Freight, Harbor sets will fit. A number of 'contractor' units w3ill fit, all of which
seem to use the same basic engine. The old Kohler 4KW 'thumper' will fit. All of these will require you make a mount, and you'll have to modify the
space in most cases, by removing some of the floor behind the door. The Kohler and Onan are 1800 rpm gensets, the others are all 3600rpm.
One of the later Onans is belt drive, the alternator and engine run at different speeds. I don't think it will fit a GMC though.

--johnny

--
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
 
My attitude is this;
Why use something few GMC people have knowledge about.
When it comes to Onan units there are lot of people and lot of information
to assist you. Also parts as well.

On Mon, Oct 21, 2019 at 6:03 AM Johnny Bridges via Gmclist <

> I got thte point, Emery. I figured the only place to put it would be up
> front, requiring the current engine to leave. And it'd still be too large.
>
>
> As to what will fit a 23', the Onan 4KW will fit. Several Freight, Harbor
> sets will fit. A number of 'contractor' units w3ill fit, all of which
> seem to use the same basic engine. The old Kohler 4KW 'thumper' will
> fit. All of these will require you make a mount, and you'll have to modify
> the
> space in most cases, by removing some of the floor behind the door. The
> Kohler and Onan are 1800 rpm gensets, the others are all 3600rpm.
> One of the later Onans is belt drive, the alternator and engine run at
> different speeds. I don't think it will fit a GMC though.
>
> --johnny
>
> --
> Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
> Braselton, Ga.
> I forgive them all, save those who hurt the dogs. They must answer to me
> in hell
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
> Didnt have anything to start with or i wouldn't have been in this predicament....lol.

Have 4K and 6K Onans near Cincinnati, OH in all conditions of repair and operability. Some even have their drawers and slides depending on what someone needs. Could have helped.

—Jim

Jim Miller
1977 Eleganza
1977 Royale
Hamilton, OH
 
Jim M.:
Do you have a used electronic board for a 6000 Onan? And if so, how much would you want for one?
Mike/The Corvair a holic

Sent from my iPhone

>

>>
>> Didnt have anything to start with or i wouldn't have been in this predicament....lol.
>
> Have 4K and 6K Onans near Cincinnati, OH in all conditions of repair and operability. Some even have their drawers and slides depending on what someone needs. Could have helped.
>
> —Jim
>
> Jim Miller
> 1977 Eleganza
> 1977 Royale
> Hamilton, OH
>
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
 
> Do you have a used electronic board for a 6000 Onan? And if so, how much would you want for one?

Hi Mike, I have some OEM boards in the pile but I would not recommend them to anyone - not even my worst enemy. Any generator that I get my hands on gets either a Dinosaur board or a Flight Systems board. The old boards have numerous failure modes and I refuse to be involved with them as they only serve to disillusion people about the Onan.
—Jim


Jim Miller
1977 Eleganza
1977 Royale
Hamilton, OH
 
Actually having repaired and tried to do so to some old boards, I can tell you that the availability of new boards is truly a blessing. Go new.

jofarr
Soddy daisy tn
'74,'76 & '78

----- Original Message -----
From: Jim Miller via Gmclist
Reply-To:
To: Johnny Bridges via Gmclist
Cc: Jim Miller , GMC 6 Wheelers - Kelley, Mike & Billie
Sent: 10/21/2019 9:39:08 PM
Subject: Re: [GMCnet] Onan or Generac?
________________________________________________________________________________

> Do you have a used electronic board for a 6000 Onan? And if so, how much would you want for one?

Hi Mike, I have some OEM boards in the pile but I would not recommend them to anyone - not even my worst enemy. Any generator that I get my hands on gets either a Dinosaur board or a Flight Systems board. The old boards have numerous failure modes and I refuse to be involved with them as they only serve to disillusion people about the Onan.
—Jim

Jim Miller
1977 Eleganza
1977 Royale
Hamilton, OH

_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
 
Hi Mike, I have some OEM boards in the pile but I would not recommend them to anyone - not even my worst enemy. Any generator that I get my hands on
gets either a Dinosaur board or a Flight Systems board. The old boards have numerous failure modes and I refuse to be involved with them as they only
serve to disillusion people about the Onan.
--Jim

Jim Miller
1977 Eleganza
1977 Royale
Hamilton, OH[/quote]
Jim,

Do you have a preference of those two?

Matt
--
Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan
OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Twixt A2 and Detroit
 
> Do you have a preference of those two?


Hi Matt,
I have been exclusively using Flight Systems’ boards for a while now - including on my own coach. Here’s why:

I have seen with mine own eyes several failed Dino boards - all with the smoked resistor/melted relay coil failure in the part of the circuit connected to the flywheel alternator - and I have talked to other owners who have had the same experience.

I have never seen a failed Flight Systems board. That said, the sample set of FS boards has been small so far compared to the number of Dino boards - so I am not ready to draw any conclusions.

Some time ago I reverse-engineered the portion of the Dino board containing the smoked resistor and relay and found that these components are being operated WELL in excess of their ability which leads to a cascading failure - first of the relay and then of the resistor.. As an experiment I changed the relay to a 24V version and also changed the resistor to a different value and ran it on my coach for a while without problem before I switched over to the FS board as a long term solution.

Supposedly Dino had a mod for the boards that were getting smoked but I was not able to get exact details on it.

—Jim

Jim Miller
1977 Eleganza
1977 Royale
Hamilton, OH