| Author |
Message |
Jason (24.107.39.46)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, January 27, 2003 - 10:37 pm: | |
Ok, I was thinking of this, and think it might work. What is keeping me from running my MCI-9 heating/airconditioning system from an electric motor instead of having to have the bus running? All I need is some power source to run the compressor and blower, Right? I think I need some help! This is the original system and I like it. It was designed for the coach, so why not keep it, plus I am on a tight budget. Thanks for your help. |
Buswarrior (Buswarrior) (64.229.209.145)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, January 27, 2003 - 10:50 pm: | |
Excellent idea in theory, Jason.
Trouble is, it has been suggested that the whole air conditioning system in a coach of your vintage takes about 25 HP to run. That's turning the compressor and the alternator to make the power for those two big electric motors, one in the condensor and the other in the coach blower.
Neighbours won't appreciate the condensor fan, it's awful noisey.
I personally support maintaining the coach heat/ac, as it's big size gives you the ability to pull the temp down quickly on start-up, and it's already there and engineered. Also gives you the base for some redundancy, if you add the AC of your choice (basement or roof), and a propane furnace or two.
However, if you do manage to work out the engineering, I'd love to hear about it!
happy coaching!
buswarrior |
Bill Butler (172.149.167.240)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, January 27, 2003 - 11:19 pm: | |
Don't forget that the big engine also heats the water for your heating system. |
Henry R. Bergman, Jr. (Henryofcj) (65.194.145.51)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, January 28, 2003 - 12:11 am: | |
Hello Jason;
The only problem would be that it probably takes about 30-40 hp to run the very large coach AC designed to cool 47 people in 110 degree weather.
To have an electric motor do the job would take---you guessed it----a 30 hp electric motor of whatever voltage. It would be HUGE!
This is one big reason they went from the 4106 Jimmy from the 4104 jimmy. A 280 hp 8V71 vs a 200 hp 671. That plus better road performance.
What you wish to do is doable--only it would take a HUGE generator to run the electric motor. Forget about any existing alternator doing the job.
Having said that, .... I wonder if some neat, light weight, HUGE PTO alternator wouldn't do the trick. Hummm...., now you got me thinking! Best of luck! Henry |
Jayjay (152.163.188.227)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, January 28, 2003 - 1:01 am: | |
You could use a pony motor, (diesel or gas) as the new coaches do. HP loads vary, but GMC's Buffalo's with the three cylinder Trane compressor used 38 HP. The condenser fan was 86 amps, and the two evaporator fans are 37 amps each. That's why they have a 265 amp Leece-Neville alternator driven off the camshaft. An electric motor would not have to be 38 HP, but more like 22. That requires a three phase 220V or 440V motor, NEMA 2 starter and overloads, Three phase 440 Volt genset. Grand Total New: about $11,000.00 Careful shopping,used, you may pare that down to 5 grand or so. Besides all of that, where 'ya gonna' hide it? HTH. ...JJ |
Jay GErlick (64.12.96.235)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, January 28, 2003 - 7:30 pm: | |
Take out the bus air and heat. You would vomit if you could see the crap in those old ducts. |
Jojo Colina (Du1jec) (209.75.20.72)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, January 28, 2003 - 7:45 pm: | |
I collected about $8 in change out of the ducts in mine. What came out along with it is quite gross.
Jojo |
FAST FRED (209.26.115.226)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, January 29, 2003 - 6:02 am: | |
"Take out the bus air and heat."
But keep the drivers defroster , and before the sledge hammer starts to fly notice the floor ducts are the correct size for air dist from a Suburban , or from a basement air cond.
May be worth a cleaning , instead of distruction.
Works for me, as heat dist on one side , and hot air return (with riser), to the basement AC on the other.
FAST FRED |
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