My twin Honda EU3000is Generator Install

[gg04]

I have had a pair of eu2000's since they came out. Finally replaced one with a 30a companion two years ago and did away with the old jumper box. Have never had any problems. Hooked up with a B.E.R.G. system and a 3psi fuel pump to factory gas tank. Cooled by 6x12 slot in floor with a piece of 2 1/2" angle mounted aimed down behind the opening. With a 16" fan blowing out the side. Mounted in old ac compartment. rdw

[Scott & Heather]

Shanksy, you bring up a good point, but let me clarify my thoughts on my install (which incidentally I am doing this week and I'll post pictures).

1. As was mentioned, the Honda inverter EU series gennies are known for being designed to stay cool and quiet in a multitude of conditions. That's a plus.

2. My gensets are not being installed in a luggage bay but rather my condenser bay near the front of the bus. Here's a photo from the Internet showing the mesh screen door. I already have a HUGE hole in the floor of one end of this bay for airflow so that shouldn't be an issue.

3. I am wondering as is Dave, if it's best to pull air from the bottom hole out the side screen or install some sort of low profile scoop on the side screen and push air down over the gennies and through the floor hole. This would work while driving as was already mentioned, but again, what about when stationary....at that point. You're fighting the law of thermodynamics. I already have a pair of 24 volt Baldor fans from the OTR HVAC system that I wanted to use for this. Only issue is fitting them to the screen door and still allowing space for the door to close.




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[Jim Eh.]

Going to watch this thread as I will be making my choice in the New Year as to type/size to install.

Isn't the air pressure a lot lower under the bus than beside it? If so it would probably be better (for travel) to direct the air flow through the side screen and exit out the bottom? On the other hand while stationary it would probably be better in the other direction instead of dumping fumes/heat under the bus pass everything out the side. Decisions decisions.

[oltrunt]

Looking at the picture, the front fender flap is going to cause at least a small drop in air pressure over the screened area.  With a vent in the floor and a small air dam at it's rear edge coupled with the natural rise of hot air, one could retain the good looks of the side of the bus and still have good cooling.

[bevans6]

The stock air conditioning setup drew air in through the mesh door, through the condenser and down out the hole in the floor, pushed by a 2 hp fan.  That is the natural air flow, air pressure is higher than ambient on the side wall of the bus that far back from the front, and lower than ambient under the bus, when driving.  I cut the big fan mount out and put my batteries in where the fan was.  I never run my generator (Yamaha 3000 SEB) in the compartment when driving.

Brian

[eagle19952]

looking at your picture (and reading the comments) my generator (tho bigger and different) I do use going down the road...

Air in, is as noted in the photo, and exhausted thru the floor  to the road. The difference (that works well for me) is that the intake cooing air is limited to the top half of the "baggage door" and the bottom curb "edge", lower half is sided and not open as is seen in your picture.
Just a thought to consider, you might experiment, as I believe the velocity of the "drawn" air is greater this way...

Clear as mud ?

[Scott & Heather]

Lol. Yep I think I get it. At the end of the day if my intake fan on the mesh and the exit fan on the floor of the bay are both high CFM fans and the screen is ducted properly, it will do the trick even when stationary


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[gg04]

Back in 99 when we first built this bus we were having a real over heating problem, so we tufted the drives side then filmed  it at steady 45 ,55, 65,and 70. Why we have a 2 1/2" airdam in front of the radiator opening, and exhaust the gen straight out. (my front airdam is 3"off pavement at ride height.) rdw

[lvmci]

Hi Scott & Brian, I just finished the install of an older Wrico 13K genset, had my old generator in the area pictured,, ( it was aircooled,) removed the heater core and evaporator from in front of the 1st bay, center, Van and Gary cut a hole there and put a 1hp squirrel cage fan and enclosure, removed the radiator from genset, whe re it was mounted on the motor and turned it perpendicular on the wall seperating the old condenser and evaporator areas, where the fan and new hole were cut. And blocked the screened  door where the original  over the road AC condensor and fans were, I'm  going to add sound deadening  material there, to eleminate even more noise. This sounds like what you  did Brian. Air flows upward from the road,  from the original large hole under the genset, is pulled thru the radiator, and shoots down the middle of the bus to the road. I moved the house batteries to the remaining space next to the fan enclosure. .lvmci...

[Scott & Heather]

So, the day isn't going quote as planned. So far I've spent the entire day just having a custom exhaust pipe made for the twins at my uncles shop. Once this is complete, I'll start working on the slide tray. Based on some loose measuring, I think some condenser bay hacking is in ordet


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[Scott & Heather]

Ok so I have the exhaust done for the most part. Did some work in the rain crummy Michigan weather. Tomorrow will work on the slide tray. Here are some pics of how I did the exhaust on my twins:

Cut galvanized 1" pipe


Removed exhaust pipe in prep for welding extension


Ground off the cap that Honda tacks on to the end of the pipe


More sanding to remove burrs etc


Bent the pipe into an offset


Test fitting exhaust extension before welding




Test fitting small patch we made for hole in Honda OEM exhaust pipe



My uncle tig welding everything together


Installed with insulation back in



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[bevans6]

Someone on another forum built one of these (or like it) into a conversion, and mentioned that removing the stock muffler removed a major point source of heat, and that makes a lot of sense.  It would be neat to try that, with a remote muffler and a wrapped or coated exhaust pipe.

Brian

[oltrunt]

I'm sure others have relocated mufflers from their genny boxes as did I.  I also removed the computer module from the genny box which sort of made the whole genny a "plug and play" affair.  I used a small constant run pusher fan and a small, temp controlled puller fan for cooling.  As a safe guard I added two, 190 degree thermostatic kill switches on the oil sump--they have yet to come into play.  Jack

[Scott & Heather]

Brian, now you tell
Me :-( would have been an amazing idea. Oh poo.


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[bevans6]

Olrunt is the guy I was "quoting", didn't know if he was on this board, didn't want to "out " him, check his blog on his schoolbus conversion - epic wonderfulness.

Brian