Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Results 1 to 5 of 5

  1. #1
    mikefuture's Avatar
    Join Date
    Jan 2003
    Location
    mineola, NY
    Posts
    99
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    converting 30% nitro

    Hello all,

    I have a few cases of Powermaster 30% Nitro, 23% all synthetic Helicopter glow fuel.

    I wanted to convert it to 15% nitro, 18% oil (including 3% castor oil) and
    5% Nitro, 18% oil by just adding Methonal and castor oil.

    How would I figure the math for that. Metric is fine too......

    Thanks guys...


  2. #2
    Nitrovein's Avatar
    Join Date
    May 2010
    Location
    Skaraborg, SWEDEN
    Posts
    115
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: converting 30% nitro


    ORIGINAL: mikefuture

    Hello all,

    I have a few cases of Powermaster 30% Nitro, 23% all synthetic Helicopter glow fuel.

    I wanted to convert it to 15% nitro, 18% oil (including 3% castor oil) and
    5% Nitro, 18% oil by just adding Methonal and castor oil.

    How would I figure the math for that. Metric is fine too......

    Thanks guys...

    The easiest way is do divide a certain volume in to itΒ΄s percentage of the different ingredients.
    1 liter/1000ml;
    30% Nitro = 300ml
    23% Oil = 230ml
    47% Met = 470ml

    Then go by the ingredient you donΒ΄t want to add, as in this case Nitro.

    When changing from 30% to 15% nitro, thatΒ΄s half the amount so the end result should be twice what you started with.
    1 liter to 2 liter;
    2000 * 0,15=300ml Nitro (the same as you started with)
    2000 * 0,18=360ml Oil (360-230=130ml should be added, 100/2000*130=6,5% will be castor)
    2000 * 0,67=1340ml Methanol (1340-470=870ml should be added)


    1 gallon 30/23 to 5/18
    3785ml is;
    3785 * 0,3=1135,5ml Nitro
    3785 * 0,23=870,55ml Oil
    3785 * 0,47=1778,95ml Methanol

    Changing from 30% to 5% is 1/6 of what you started with, so it should be 1 gallon * 6 (3785*6=22710ml 22,71liter)
    22710 * 0,18=4087,8ml Oil (4087,8-870,55=3217,25ml should be added, 100/22710*3217,25=14,16% will be castor)
    22710 * 0,77=17486,7ml Methanol (17486,7-1778,95=15707,75ml, so 15,7 liter should be added)

    IΒ΄m not the best at explaining things, so I hope I didn't make things worse...

  3. #3

    Join Date
    Feb 2002
    Location
    Decatur, AL
    Posts
    220
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: converting 30% nitro

    Excellent post by nitrovein. "Give a man a fish and you've fed him for a day. Teach a man to fish and you have fed him for life." Having said that, I put together an Excel spread sheet some years ago to do the same calculation autmatically. You enter what you have to start with, and what you want to end up with, and it tells you what to add to the original gallon you started with. In your case, to get from a gallon of 30% N, 23% O to 15% N, 15% O, 3% castor, to the original gallon add 9 oz of oil, 8 oz castor, and 111 oz of meth. You'll end up with 2 galons. To get to 5% nitro, 15% O, 3% castor, to the original gallon add 86 oz O, 23 oz castor, and 531 oz meth. You'll end up with 6 gallons. If you have MS Excel on your computer and would like a copy of the spreadsheet, I can email it to you.

  4. #4
    mikefuture's Avatar
    Join Date
    Jan 2003
    Location
    mineola, NY
    Posts
    99
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: converting 30% nitro

    Yes. That would be great. Thank both of you. I just checked and I have 12 gallons of 30% helicopter fuel that I want to use. I gave up helicopters years ago and had all this fuel that I got at the WRAM when power master used to attend. Seemed a waste not to use it in my planes.

    Are you sure about the 11 oz of methanol for the 15%? It seems kinda low.

  5. #5

    Join Date
    Feb 2002
    Location
    Decatur, AL
    Posts
    220
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: converting 30% nitro

    Whoops, you are right. It the correct number is 111oz, not 11 oz. Sorry about the typo, I corrected the post.


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT -6. The time now is 11:13 PM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.