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  1. #51
    gkamysz's Avatar
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    RE: Conversion to Gas?

    ORIGINAL: KidEpoxy

    (had 'smoke' the whole time, the laymans 'not too lean' indicator)
    Ignore the smoke. It doesn't mean anything.


    So
    How do I know if I was firing the un-lit-glow off E85, or was dieseling after the lit-glow start?
    How can I cool this down... more oil? Less prop? Run it only in the winter?

    Note/warning:
    Seems even the e85 diluted some,
    the gasoline in the E85 did attack my fuel syringe black piston.
    No, it wasn't dieseling. Ethanol needs a hot plug, try an OS F or Enya #3. If that fails you may need to increase compression ratio, I've not tried that yet. Chances are E85 will run hotter, it offers much less cooling through evaporation. I've not bothered to compare actual engine temperatures.

    Yes, you have to use a gasoline compatible fuel system.

    It sounds like you need to finish breaking that engine in.

    E85 is mostly alcohol. You must use alcohol blending lubricants. Anything OK for methanol should be fine. Nothing in the main stream market for gasoline will blend with alcohol. There are a handful that blend in both. Kltoz Original Techniplate is one.

    Greg
    Greg

  2. #52
    KidEpoxy's Avatar
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    RE: Conversion to Gas?

    Just bought a smaller prop,
    dropping from a 10-6 to a 10-5, and going from MAS to APC should lighten the load a bit too.
    I can also 'borrow' the plug from my 4stroke Mag52
    Will try combinations of those in addition to raising the castor to 20% this weekend,
    and report the results

  3. #53
    Moderator w8ye's Avatar
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    RE: Conversion to Gas?

    I've been playing with four strokes on gas and they do not smoke like they do on glow fuel
    Attended the CutFinger Institute of DirtNap University for years but never did graduate....
    Recipient, Mangledhand award August 2008
    Club Saito Member #7
    Original AMA #31261

  4. #54
    Jezmo's Avatar
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    RE: Conversion to Gas?

    That's the way mine are Jim, no smoke at all unless they idle for a while and then only just a puff when you hit the throttle.
    Spektrum DX8i, DA DLE SuperTigre OS FOX Saito Enya Jett TT: John 3:16

  5. #55
    Moderator w8ye's Avatar
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    RE: Conversion to Gas?

    My Saito FG engines give a puff of smut when you quickly open the throttle after idling for a bit but no smoke like on glow fuel.

    My Saito 150 is actually not any different than thw FG -20's in the way it runs.

    You must be able to identify mixture setting by sound.
    Attended the CutFinger Institute of DirtNap University for years but never did graduate....
    Recipient, Mangledhand award August 2008
    Club Saito Member #7
    Original AMA #31261

  6. #56

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    RE: Conversion to Gas?


    ORIGINAL: the mother of invention

    You don't have to convert anything on the big Tigers. Run E85 from the gas station at 1.99 a gallon and put in 12-18% oil depending on the model you have. The S2000,2500 and 3000 run on 18% oil (15% synthetic 3% castor) and the S2300, 4500 run on 12% oil (10% synthetic 2% castor). Just change your glow plug to an OS F and it will run like a top even inverted without on board glow driver. It is the best fuel for you Super Tigers. I have been running this and checking head and exhaust temp with laser thermometer and with that mix the temps are identical to glow fuel.
    O-Boy,you have got to be kidding.
    BCCHI

  7. #57

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    RE: Conversion to Gas?

    I met a guy that runs a big Supertiger 2000on E85. I could not believe how good it ran. Just use a 4 cycle OS Max "F" Glow plug & 17-18 & oil that mixes good ...like Klotz. I got his phone number even! Capt,n
    I never met a engine I did not like !

  8. #58

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    RE: Conversion to Gas?

    I recently converted a Saito GK220 to gas, simply because it was too thirsty as glow. Have a look on youtube.

    http://www.youtube.com/watch?v=Wkkr_2KLiH8.

    It was easier than I thought, and the result was pretty good.
    It\'\'s easyer to ask for forgivness than begging for permision
    \"JUST BUY IT\'\'\'\'

  9. #59
    YAT-28E's Avatar
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    RE: Conversion to Gas?

    Starfighter,

    I am intriqued as you mentioned converting a BGX to gas. I have one and the project I am looking to use it in is a 22 lb scale model and the problem i am having is getting the tanks low enough as to not siphon.
    CAn you positoin the tanks anywhere with a gas conversion?
    What is needed to convert? Sounds interesting

    Thanks
    mike
    I have being doing so much, with so little for so long...that now I can do anything with nothing.....G. Ivory

  10. #60
    Maximiliano Galvez's Avatar
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    RE: Conversion to Gas?


    ORIGINAL: Merlin Man


    Hi,
    I have a SuperTigre G4500 Glow Engine ( 45 cc ) and I have heard the these can be converted to Spark/gas.


    I was wondering if any one has heard of this conversion, how much it might cost and whether or not it is successful.


    Any info would be appreciated.

    Cheers,

    Merlin Man.
    Is very succesul Only use a walbro
    Special Tuned Engines (STengines)

  11. #61
    Maximiliano Galvez's Avatar
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    RE: Conversion to Gas?

    THE BGX WAS THE FIRST ENGINE I CONVERT 2 YEARS AGO, I WAS SURPRISED ABOUT THE SUCCESFULL,
    THE OTHER PIC IS A SUPERTIGRE 35CC STE

    BOTH ENGINES ARE VERY POWERFULL MORE THAN A COMERCIAL 40CC GAS

    i THINK THE ST 4500 WILL BE MORE POWERFULL THAN ANY 55 CC
    Special Tuned Engines (STengines)

  12. #62

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    RE: Conversion to Gas?

    I have a ST4500 converted to gas. It has the Pro Spark ignition system using a 1/4-32 spark plug. I had needle bearings put on the con rod as well. Plan on converting my BGX-1 as well. Hey Max, how much do you charge?
    rcnats
    Spitfire Brotherhood #109

  13. #63
    Maximiliano Galvez's Avatar
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    RE: Conversion to Gas?


    ORIGINAL: rcnats

    I have a ST4500 converted to gas. It has the Pro Spark ignition system using a 1/4-32 spark plug. I had needle bearings put on the con rod as well. Plan on converting my BGX-1 as well. Hey Max, how much do you charge?

    I fit the wabro support, walbo mnimagnet and hall sensor no need con rod bearings, I ported it. is very powerful more power full than my zdz 40cc

    u can instead use a walbro use regulator and is nice

    Regards
    Special Tuned Engines (STengines)

  14. #64

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    RE: Conversion to Gas?

    Wey Max I want to convert a 120ax to gas and NOT put rollers in the con rod. What oil ratio are you using on your BGX?
    Listen!!! Do you smell something?

  15. #65

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    RE: Conversion to Gas?

    Not a reply....just looking for Ken Lambert who does real nice Supertiger conversions. I need his phone number....people are asking for his phonenumber. I pray that he is ok and doing well. Thanks Capt,n
    I never met a engine I did not like !

  16. #66
    av8tor1977's Avatar
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    RE: Conversion to Gas?

    Don't have a phone number. Website is www.lambertsrc.com.

    AV8TOR
    If it is not SCARY, it is NO WHERE NEAR powerful enough!!
    All R/C planes have expiration dates---> It's just not printed on them anywhere!

  17. #67

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    RE: Conversion to Gas?

    So, how were the results?


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