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Mixing different fuels - 11/10/2003 2:14:40 PM   
a68fan


 

Posts: 165
Joined: 5/16/2003
From: east coast, USA
Status: offline 		Before I ruin any engines, or waste a gallon a fuel, I have a question..

I have a gallon of relativly fresh 30% Byron heli fuel, and about 1/2 gallon of Cool Power 15%.. Can I mix these two together to run in airplane engines?? (Evolution .46 & Saito .72's)
       Post #: 1

RE: Mixing different fuels - 11/10/2003 9:55:42 PM   
ShoestringRacer


 

Posts: 630
Joined: 3/25/2002
From: NY, NY, USA
Status: offline 		Yeah you can mix them without hurting anything. It will bring the nitro down below 30% but that doesnt really matter. It wont go down much if you are adding only 1/2 gal of 15%. You could mix them or just use one after the other runs out. Your call.

(in reply to a68fan)
       Post #: 2

RE: Mixing different fuels - 11/12/2003 3:03:24 PM   
a68fan


 

Posts: 165
Joined: 5/16/2003
From: east coast, USA
Status: offline 		Thanks!!

(in reply to ShoestringRacer)
       Post #: 3

RE: Mixing different fuels - 11/12/2003 3:16:28 PM   
jessiej



Posts: 1790
Joined: 7/6/2003
From: STATESBORO, GA, USA
Status: offline 		You will have about 25% nitro.

(in reply to a68fan)
       Post #: 4

RE: Mixing different fuels - 11/13/2003 3:42:57 AM   
Sport_Pilot



Posts: 7438
Joined: 1/21/2002
From: Acworth, GA, USA
Status: online 		22.5% nitro.

(in reply to jessiej)
       Post #: 5

RE: Mixing different fuels - 11/13/2003 5:38:47 PM   
Jim Thomerson



Posts: 2776
Joined: 10/9/2002
From: Austin, TX, USA
Status: offline 		Show your work or you get no credit for your answer.

Jim

(in reply to Sport_Pilot)
       Post #: 6

RE: Mixing different fuels - 11/13/2003 6:34:41 PM   
scole


 

Posts: 652
Joined: 11/30/2002
From: Fairport, NY, USA
Status: offline 		128*30+64*15=4800/192=25%

(in reply to Jim Thomerson)
       Post #: 7

RE: Mixing different fuels - 11/14/2003 3:26:28 AM   
Sport_Pilot



Posts: 7438
Joined: 1/21/2002
From: Acworth, GA, USA
Status: online 		(15%+30%)/2=%22.5

(in reply to scole)
       Post #: 8

RE: Mixing different fuels - 11/14/2003 12:52:41 PM   
vinnie



Posts: 651
Joined: 1/7/2002
From: hollywood, MD, USA
Status: offline
quote:

ORIGINAL: scole

128*30+64*15=4800/192=25%


I'm going with scole !

_____________________________

Regards,
vinnie
AMA 680367

(in reply to scole)
       Post #: 9

RE: Mixing different fuels - 11/14/2003 5:37:05 PM   
hauckf


 

Posts: 187
Joined: 3/1/2002
From: Decatur, AL, USA
Status: offline 		Byron lists the percentages in their fuel by weight, not by volume like every other fuel manufacturer. Byron's "30%" nitro, "24%" oil Heli fuel actually contains a little over 24% nitro and 22% oil by volume. Mixing 1 gal of the Byron "30%" Heli and 1/2 gal of 15% Cool Power will result in a fuel with about 21% nitro and 20.5% oil. (If Byron's percentages were by volume, Scole's calculation would be correct.)

(in reply to vinnie)
       Post #: 10

RE: Mixing different fuels - 11/14/2003 6:37:13 PM   
Sport_Pilot



Posts: 7438
Joined: 1/21/2002
From: Acworth, GA, USA
Status: online 		I think scole is mixing all of the fuel together. I would have simply added the 30% to the 15%. Modifying my calculation for mixing both together then would be (.5*15%)+(1*30%)/1.5=25%. No need to use ounces, simpler to use the largest known volume which is a gallon.

(in reply to vinnie)
       Post #: 11

RE: Mixing different fuels - 11/14/2003 8:37:30 PM   
Bax


 

Posts: 11991
Joined: 4/26/2002
From: Champaign, IL, USA
Status: offline 		One precaution about mixing model fuels. If they're both fresh, there should be no effects at all, other than the change in total nitro percentage. If one of the fuels is old, and hasn't been stored as well as it should, it may contain moisture, which will only contaminate the resulting mix. Moisture in model fuel causes hot running, bad idle, and bad acceleration. You may wind up taking some perfectly good fuel and mixing it with stuff that will result in you having nightmares trying to get your engines to run well.

_____________________________

Bill Baxter, Manager Hobby Services/Futaba Service/North America
3002 N. Apollo Dr. Ste. 1 Champaign, IL 61822 USA
Service Phone: 217 398-0007
Email: hobbyservices@hobbico.com

(in reply to Sport_Pilot)
       Post #: 12

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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> RC Fuels >> Mixing different fuels
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