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  1. #1
    Join Date
    Feb 2010
    Location
    ALABAMA
    Posts
    34

    Default Help !! Lp conversion bobcat 250

    23 HP KOHLER
    MODEL CH23S
    674 cc ENGINE
    MANU. DATE 7-11-06

    DOES ANYONE KNOW WHERE I CAN PURCHASE A KIT FOR THIS UNIT ? IT IS CURRENTLY A GASOLINE ENGINE AND AM NEEDING A LP CONVERSION KIT REALLY FAST ANY HELP WOULD BE GREATLY APPRECIATED !

    DOC



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  2. #2
    Join Date
    Oct 2007
    Posts
    2,949

    Question

    Quote Originally Posted by DOCDENT View Post
    23 HP KOHLER
    MODEL CH23S
    674 cc ENGINE
    MANU. DATE 7-11-06

    DOES ANYONE KNOW WHERE I CAN PURCHASE A KIT FOR THIS UNIT ? IT IS CURRENTLY A GASOLINE ENGINE AND AM NEEDING A LP CONVERSION KIT REALLY FAST ANY HELP WOULD BE GREATLY APPRECIATED !

    DOC
    Have you contacted Miller's Engine Drive Department, and ask if one is available?
    "Bonne journe'e mes amis"

  3. #3
    Join Date
    Feb 2010
    Location
    ALABAMA
    Posts
    34

    Default

    doin that now



    autocad
    bobcad
    bobnest
    surfcam
    fadal
    mazak
    trump
    bridgeport
    hem-saws vert. and horiz.
    cnc 8x14 plas-cutter
    wysong 10 ft shear
    wysong 8ft brake
    100 ton edwards ironworker
    precision 275
    synchro 250
    dynaflux
    hypertherm 1650
    spectrum 875
    spectrum 2050
    3 millermatics
    renegade 180
    cobramatic
    keystone studwelder

    a pen
    and a nice chair

  4. #4
    Join Date
    Dec 2007
    Location
    southern California
    Posts
    1,783

    Default

    Miller made an LP version of your gas Bobcat. I'm sure they could sell you all the parts to convert your machine, however, it may be alot more expensive to convert it than to just trade in your gas Bobcat for an LP one, or sell it outright and buy one outright.
    Millermatic350P/Python, MillermaticReach/Q300
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    -Smith oxy/propane
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  5. #5
    Join Date
    Feb 2010
    Location
    ALABAMA
    Posts
    34

    Default

    this welder is a steal of a deal if i can find a kit new or used.....heres the reply i received earlier from miller.....




    Doc,

    Thank you for your inquiry.

    Miller Electric does not offer a conversion kit for your machine. I recommend contacting the engine manufacturer for more information.

    Thank you,

    Brian Schmidt
    Customer Service
    Miller Electric Mfg Co.
    920-735-4384



    autocad
    bobcad
    bobnest
    surfcam
    fadal
    mazak
    trump
    bridgeport
    hem-saws vert. and horiz.
    cnc 8x14 plas-cutter
    wysong 10 ft shear
    wysong 8ft brake
    100 ton edwards ironworker
    precision 275
    synchro 250
    dynaflux
    hypertherm 1650
    spectrum 875
    spectrum 2050
    3 millermatics
    renegade 180
    cobramatic
    keystone studwelder

    a pen
    and a nice chair

  6. #6
    Join Date
    Feb 2009
    Location
    Lodi, CA
    Posts
    1,287

    Default

    Just for your information, I own a Lincoln 250, LPG power. It has the next size up engine, plus the vaporizer, propane regulator, and propane carborator.

    I suspect, to get an equivalent output LPG engine, takes more than just a conversion kit.
    Obviously, I'm just a hack-artist, you shouldn't be listening to anything I say .....

  7. #7
    Join Date
    Oct 2008
    Location
    Central California Coast
    Posts
    302

    Default Less BTU

    LPG has less BTU's than gasoline, which produces less output as JS pointed out. I believe it produces about 15% less heat (energy) than gas. If you Google search "LPG conversion kit" with whatever engine type you have, many kits are available.

    Let us know what you find!

    Good luck!

    ~Ian
    :~ATTITUDE MAKES THE DIFFERENCE!!!:

  8. #8
    Join Date
    May 2010
    Location
    Thrown Under The Bus
    Posts
    11

    Default

    Actually propane has more BTU's per pound and is around 104 to 107 octane.
    Its natural gas that has less BTU's than gasoline.

    C&P from propane gas assn:
    Propane
    1 pound = 21,500 BTU <-------
    4.24 lbs = 1 gallon
    Natural Gas 1 cubic foot = 1,050 BTU
    36.39 cubic feet = 1 gallon
    Gasoline
    1 pound = 19,000 BTU <-------
    1 gallon = 6.1 lbs

    We have ordered some kits from these guys in the past, and they were bolt up complete, and not to bad on pricing.
    Your mileage may vary, LOL!
    http://www.propanecarbs.com/small_engines.html
    Last edited by HotRodTodd; 05-20-2010 at 10:44 AM. Reason: Forgot to add link
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  9. #9
    Join Date
    Mar 2008
    Location
    Dallas,Tx
    Posts
    172

    Default Bobcat

    Another suggestion - send us the machine and we will send you a propane model same day. weldersales

  10. #10
    Join Date
    Oct 2008
    Location
    Central California Coast
    Posts
    302

    Default

    Quote Originally Posted by HotRodTodd View Post
    Actually propane has more BTU's per pound and is around 104 to 107 octane.
    Its natural gas that has less BTU's than gasoline.

    C&P from propane gas assn:
    Propane
    1 pound = 21,500 BTU <-------
    4.24 lbs = 1 gallon
    Natural Gas 1 cubic foot = 1,050 BTU
    36.39 cubic feet = 1 gallon
    Gasoline
    1 pound = 19,000 BTU <-------
    1 gallon = 6.1 lbs

    We have ordered some kits from these guys in the past, and they were bolt up complete, and not to bad on pricing.
    Your mileage may vary, LOL!
    http://www.propanecarbs.com/small_engines.html
    Fuel GGE BTU/unit
    Gasoline (base)[2] 1 US gallon 114,000 BTU/gal
    Gasoline (conventional, summer)[2] 0.996 US gallon * 114,500 BTU/gal
    Gasoline (conventional, winter)[2] 1.013 US gallon * 112,500 BTU/gal
    Gasoline (reformulated gasoline, ethanol)[2] 1.019 US gallon * 111,836 BTU/gal
    Gasoline (reformulated gasoline, ETBE)[2] 1.019 US gallon * 111,811 BTU/gal
    Gasoline (reformulated gasoline, MTBE)[2] 1.020 US gallon * 111,745 BTU/gal
    Gasoline (10% MBTE)[3] 1.02 US gallon 112,000 BTU/gallon
    Gasoline (regular unleaded)[4] 1 US gallon 114,100 BTU/gal
    Diesel #2[4] 0.88 US gallons 129,500 BTU/gal
    Biodiesel (B100)[4] 0.96 US gallons 118,300 BTU/gal
    Bio Diesel (B20)[4] 0.90 US gallons 127,250 BTU/gal
    Liquid natural gas (LNG)[4] 1.52 US gallons 75,000 BTU/gal
    Compressed natural gas (CNG)[4] 126.67 cu ft (3.587 m3) 900 BTU/cu ft
    Hydrogen at 101.325 kPa 357.37 cu ft 319 BTU/cu ft[5]
    Hydrogen by weight 0.997 kg (2.198 lb)[6] 119.9 MJ/kg (51,500 BTU/lb)[7]
    Liquefied petroleum gas (LPG)[4] 1.35 US gallons 84,300 BTU/gal
    Methanol fuel (M100)[4] 2.01 US gallons 56,800 BTU/gal
    Ethanol fuel (E100)[4] 1.500 US gallons 76,100 BTU/gal
    Ethanol (E85)[4] 1.39 US gallons 81,800 BTU/gal
    Jet fuel (naphtha)[8] 0.97 US gallons 118,700 BTU/gal
    Jet fuel (kerosene)[8] 0.90 US gallons 128,100 BTU/gal
    Electricity 33.40 kilowatt-hours * 3,413 BTU/(kWh) [9][10]
    *calculated based on 114,000 BTU/gal base gasoline
    :~ATTITUDE MAKES THE DIFFERENCE!!!:

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