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Old 11-29-2007, 02:28 PM   #31
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Re: Jacuzzi Bus IV

well we wanna see that firepole in action
This one should gross you at least 25G's on e-bay once its done. just make sure you got the right pictures in the listing.
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Old 11-29-2007, 04:36 PM   #32
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Re: Jacuzzi Bus IV

here is the tentative floorplan. Seems simple enough.



Would also like to add remote keyless doors open/close, also going to add remote kneeling/raising, big stereo, crazy uv lights ect ect. She should be pretty pimped out when she's finished.
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Old 11-29-2007, 06:17 PM   #33
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Re: Jacuzzi Bus IV

Wow, you are making great progress, seems like I was just watching that bus on Ebay last week.

I have a lead on a pair of installed but un-used Dou-them Rooftop ACs and was pondering how I would power them on the road. The 12 volt conversion route seems pretty sketchy, Let us know how the 24 volt set up works when you get it going. AC here in Austin is not an option in the summer.

Has anyone seen these at Harbor Frieght
10,000 WATTS PEAK/7200 WATTS RATED BELT-DRIVEN GENERATOR HEAD

http://www.harborfreight.com/cpi/ctaf/D ... mber=45416

I was thinking one for each AC unit and one for the house, but HF stuff does not inspire much confidence. I think I would want to shroud and fan cool them

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Old 11-29-2007, 06:30 PM   #34
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Re: Jacuzzi Bus IV

Quote:
Originally Posted by Xtevan
Wow, you are making great progress, seems like I was just watching that bus on Ebay last week.

I have a lead on a pair of installed but un-used Dou-them Rooftop ACs and was pondering how I would power them on the road. The 12 volt conversion route seems pretty sketchy, Let us know how the 24 volt set up works when you get it going. AC here in Austin is not an option in the summer.

Has anyone seen these at Harbor Frieght
10,000 WATTS PEAK/7200 WATTS RATED BELT-DRIVEN GENERATOR HEAD

http://www.harborfreight.com/cpi/ctaf/D ... mber=45416

I was thinking one for each AC unit and one for the house, but HF stuff does not inspire much confidence. I think I would want to shroud and fan cool them

Xtevan
What do you plan to turn those generator heads with? You'd probably need a 12 hp engine for each unit. It would be near impossible to use the bus engine to turn a geni at exactly 3,600 rpm. If you create a mechanism to turn the geni at 3x engine speed it becomes 3x more difficult to maintain 3,600 rpm with the geni.

I just picked up a vw diesel golf for $400....something like that might be a good match for a pair of 10kw geni's.
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Old 11-30-2007, 10:06 AM   #35
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Re: Jacuzzi Bus IV

Quote:
Originally Posted by lapeer20m
If you create a mechanism to turn the geni at 3x engine speed it becomes 3x more difficult to maintain 3,600 rpm with the geni.
The transmission in my bus has a PTO out the side it would be neat to be use something like that to turn a generator.
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Old 11-30-2007, 10:31 AM   #36
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Re: Jacuzzi Bus IV

it would be neat. Here's what i see is the problem. It's a 3,600 rpm generator head and requires 10-12 hp. Turning your bus engine at 3600 rpm while parked to run run the geni wouldn't be fuel efficient since the engine probably produces at least 150 hp and that speed isn't even possible with most diesels, don't know how fast your gas engine turns.

The logical solution is to "gear up" the generator. If you could turn your bus engine at 1200 rpm and gear up the geni 3x you could run your engine at a much slower speed while still turning the generator at it's required speed. The problem of speed control becomes very important. If you had a controller that would keep the engine within a speed range of 3% of your target ie: 1200 rpm the geared up generator would be affected by up to 9% which would be considered unacceptable.

I'm not saying it can't be done, just that it would be tricky and prob not that efficient..... One advantage of having a liquid cooled engine turn a geni is that you can use the heat from the engine to keep humans warm....or to heat a jacuzzi. If you weren't going to vary the load on the geni you could have a manual adjustment for the throttle and probably make it work. The problem is if you're running your running something like an a/c and you've set the motor to spin 1200 rpm and the a/c unit shuts off the engine/geni would speed up significantly creating higher voltage and more importantly more than 60 hz.

Our fire dept has a hydraulic geni that runs of the vehicles engine. The hydraulic pump/motor and related items allow the generator to spin at a constant speed even when the truck engine speed varies significantly. I looked into one of those and they're like $10,000.

How about a big pto winch instead???? lol
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Old 11-30-2007, 10:39 AM   #37
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Re: Jacuzzi Bus IV

Quote:
Originally Posted by lapeer20m
it would be neat. Here's what i see is the problem. It's a 3,600 rpm generator head and requires 10-12 hp. Turning your bus engine at 3600 rpm while parked to run run the geni wouldn't be fuel efficient since the engine probably produces at least 150 hp and that speed isn't even possible with most diesels, don't know how fast your gas engine turns.
I don't think the speed is an issue you just change your pulley sizes to get to the correct speed. A lot of buses have a fast idle cable so the engine speed can be set from the cab. You could park, set your engine speed and engage the PTO to run the generator for power and use the water for heat.
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Old 11-30-2007, 12:04 PM   #38
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Re: Jacuzzi Bus IV

it would be a cool setup.
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Old 11-30-2007, 01:05 PM   #39
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Re: Jacuzzi Bus IV

what steve said. use motorcycle sprockets and chain. 3:1 would probably be good as 1200 rpm is a good speed to spin a diesel. But, spinning a 200+ hp diesel to power a 12 hp gennie seems a bit inefficient, also it would mean that power generation while underway would be impossible as the engine speed is gonna change quite a bit.

I think your solution is either a beefy DC generator or an A/C generator with seperate motor.
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Old 11-30-2007, 01:23 PM   #40
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Re: Jacuzzi Bus IV

The problem I have with separate motors besides having to find a place to put them and fuel them is that they are so noisy, when my bus is idling you cant tell it is running without looking at the tach.
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