Confused about mix I made.

Confused about mix I made.
View related threads: (in this forum | in all forums)

Logged in as Guest

Users viewing this topic: none

Printable Version

XYZ-26cc Gas Engine
Seller: XYZUSA
Details: $219.00 | 4/26/2008 | Classified Ad
We will rotate YOUR AD in this spot if you select "Forum Featured" when placing or editing your ad!

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> RC Fuels >> Confused about mix I made.

Page: [1]

Login

Message

<< Older Topic Newer Topic >>

Confused about mix I made. - 1/27/2008 3:04:15 AM

Tbone4life

Posts: 136
Joined: 2/17/2006
From: pearland, TX, USA
Status: offline

I mixed 1/2gal(64oz) powermaster YS 20/20 fuel, with 1/2gal(64oz)powermaster Heli fuel 30% nitro, so I'm tring to figure what oil% and Nitro % I have now. any Ideas?

Heli fuel = 30% nitro, 23% Oil, 47% alcohol
(I'am asuming) YS 20/20 is, = 20% nitro, 20% oil and 60% alcohol

Engines run pretty good with this mix. BUT Duh fer me??????

_____________________________

Club Saito #540

Post #: 1

RE: Confused about mix I made. - 1/27/2008 3:47:25 AM

aussiesteve

Posts: 938
Joined: 10/12/2005
From: TEDA (Tianjin)Tianjin, CHINA
Status: offline

Approximately
25% Nitro, 22% oil (Some of which is probably castor but either way - it is a blend of oils now) 53% alcohol

_____________________________

Australian agent for
RCGF engines & Boxes, 33RC airframes, Tzone models, Super Kraft (SK) & others

(in reply to Tbone4life)

Post #: 2

RE: Confused about mix I made. - 1/27/2008 4:05:25 AM

hauckf

Posts: 183
Joined: 3/1/2002
From: Decatur, AL, USA
Status: offline

Adding 64 oz of 20%nitro, 20% oil fuel to 64 oz of 30% nitro, 23% oil fuel will give you 128 oz of 25% nitro, 21.5% oil fuel. If you have MS Excel I can e-mail you an Excel spreadsheet that I wrote that will do that and several other fuel related calculations. If not, the math is not that hard. Just calculate the number of ounces of nitro in each fuel and add them together to get the total number of ounces nitro in the mixture, and then do the same for the oil. To get the final percentages, divide the total number of ounces of nitro in the mixture by the total number of ounces of fuel in the mixture to get the percentage of nitro, and do likewise to get the percentage of oil. (If you are adding equal amounts of fuel together, as you did, then the calculation is simpler; just averaged the percentages of the components. The average of 20% and 30% nitro is 25% nitro, and the average of 20% and 23% oil is 21.5% oil.)

< Message edited by hauckf -- 1/27/2008 4:08:23 AM >

(in reply to Tbone4life)

Post #: 3

RE: Confused about mix I made. - 1/27/2008 4:10:23 AM

Tbone4life

Posts: 136
Joined: 2/17/2006
From: pearland, TX, USA
Status: offline

Now that I see you guys replys and I read it, it's like OH yea thats right. But yers I have MS exel and would like to have the srpead sheet. I asked my 15 year old daughter and she started telling me numbers and percents and kinda confused me. but maybe I can show her with your spread sheet. Thanks, Troy

Tbone4life@aol.com

_____________________________

Club Saito #540

(in reply to hauckf)

Post #: 4

RE: Confused about mix I made. - 1/27/2008 4:20:48 AM

hauckf

Posts: 183
Joined: 3/1/2002
From: Decatur, AL, USA
Status: offline

File is on the way.

(in reply to Tbone4life)

Post #: 5

RE: Confused about mix I made. - 1/27/2008 10:57:31 PM

Jim Thomerson

Posts: 2713
Joined: 10/9/2002
From: Austin, TX, USA
Status: offline

Because you mixed equal amounts of each fuel, all you have to do is add the precentages together and divide by 2. We don't need no steenkin' spreadsheet.

(in reply to hauckf)

Post #: 6

RE: Confused about mix I made. - 1/28/2008 1:04:15 AM

Tbone4life

Posts: 136
Joined: 2/17/2006
From: pearland, TX, USA
Status: offline

quote:

ORIGINAL: Jim Thomerson

Because you mixed equal amounts of each fuel, all you have to do is add the precentages together and divide by 2. We don't need no steenkin' spreadsheet.

I figured that out x2 thing.

BUT that spread sheet is a nice program, does much more than just this. Nice work on the spread sheet hauckf.

_____________________________

Club Saito #540

(in reply to Jim Thomerson)

Post #: 7

RE: Confused about mix I made. - 1/28/2008 2:20:15 AM

Jim Thomerson

Posts: 2713
Joined: 10/9/2002
From: Austin, TX, USA
Status: offline

Suppose you have some 40% nitro and some 5% nitro fuel and you want to mix them to make 10%. What ratio of 5% do you add to the 40%? You have an amount of 40%. This amount of 40% contains 10% plus some more nitro. To get 10% nitro out of 5% you need another 5%. In the 40 % there is 10% plus 30% excess. So there are enough excess 5%'s (30/5) to match up to six 5%'s. So you need to mix six units of 5% with one unit of 40% to get seven units of 10%. The mixing ratio is 6:1. Try it with 100ml units.

General formula:
H = high nitro %
D = desired nitro %
L = low nitro %

Ratio is 1 high nitro to (H-D)/(D-L)low nitro.

(in reply to Tbone4life)

Post #: 8

RE: Confused about mix I made. - 3/3/2008 1:47:48 AM

POWERMASTER1

Posts: 7
Joined: 8/9/2005
From: elgin, TX, USA
Status: offline

Your mix is 25% nitro and approx 21.5% oil, ALL SYNTHETIC.

(in reply to Jim Thomerson)

Post #: 9

RE: Confused about mix I made. - 3/3/2008 1:54:52 AM

POWERMASTER1

Posts: 7
Joined: 8/9/2005
From: elgin, TX, USA
Status: offline

You have 25% Nitro and 21.5% oil. ALL SYNTHETIC.

Laura Hammond

(in reply to Jim Thomerson)

Post #: 10

RE: Confused about mix I made. - 3/3/2008 2:42:48 AM

Tbone4life

Posts: 136
Joined: 2/17/2006
From: pearland, TX, USA
Status: offline

Yea we figured that out

But thank you for the reply. I use Powermaster fuels in all my R/C Nitro toys and am very pleased with it.

Troy Smith (AKA-Tbone)

_____________________________

Club Saito #540

(in reply to POWERMASTER1)

Post #: 11

Page: [1]

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> RC Fuels >> Confused about mix I made.
Page: [1]

Jump to: