YS91 What Fuel??  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> RC Fuels >> YS91 What Fuel??
Page: [1]

Login
Message << Older Topic   Newer Topic >>
YS91 What Fuel?? - 5/22/2002 7:07:17 AM   
Extra_flya



Posts: 23
Joined: 5/21/2002
From: Dresden, Tennessee
Status: offline 		I am going to be buying a YS 91 here in the next month or so for a Great Planes Giles 202 45-60 size. I am wondering what would be the best fuel to use in a YS that size? I use Byron YS fuel for my YS 63 and it runs like a charm. Stick with the Fuel??? Got any suggestions??

Jake
       Post #: 1

YS91 What Fuel?? - 5/22/2002 8:39:03 AM   
mrbonk



Posts: 600
Joined: 2/18/2002
From: BundabergQueensland, AUSTRALIA
Status: offline 		From memory (don't have the manual handy), I think the recommended fuel is between 10 and 30% nitro, 20% oil.....don't quote me on the oil content though. I mix my own fuel and run 20% Klotz (totally synthetic), 20% nitro and remainder methanol. The engine sings on it......no need for higher nitro at all. I'm getting ~9000rpm on the ground with an APC 15x8 prop. Heaps of grunt for the 120 sized Ultimate Bipe it's attached to.


_____________________________

MrBonk
http://www.mrbonk.com

(in reply to Extra_flya)
       Post #: 2

YS91 What Fuel?? - 5/22/2002 8:06:21 PM   
bvmjethead



Posts: 681
Joined: 1/1/2002
From: Newport News, VA, USA
Status: offline 		Run powermaster YS 20/20 or Wildcat YS fuel. They both have 20% notro and 20% synthetic oil. Castor will run but clogs things in the regulator up.

Scott

(in reply to Extra_flya)
       Post #: 3

YS91 What Fuel?? - 5/25/2002 3:21:17 AM   
Fuelman


 

Posts: 980
Joined: 12/31/2001
From: Jordan, NY, USA
Status: offline 		YS engines love high oil, namely 20%. They also like higher nitro amounts than most other 4-strokes. I like 20% to 25% nitro in YS 4-strokes.
Don't be afraid to run a fuel with just a touch of castor in it. Through hundreds of gallons of running YS 4-stroke test engines, I found that 18% synthetic and 2% castor will not gum anything up in the regulator or coke up the valves. Any more than 2% castor over an extended period of time, the valves will start building up deposits and the regulator gets gummy if they sit for long periods.
All synthetic is fine too as long as you run it at 20% by volume.

In addition to the Wildcat and Powermaster, Cooper's and S&W fuels are also compliant with YS warranty requirements.


Fuelman


_____________________________

Fuelman
Cooper Fuels LLC

(in reply to Extra_flya)
       Post #: 4

YS91 What Fuel?? - 5/27/2002 4:28:25 PM   
rexbirk


 

Posts: 52
Joined: 12/15/2001
From: Columbus, OH, USA
Status: offline 		YS recommends 15 to 20% nitro. They run great on 20%. Too little nitro and your throttle response is poor and the power is way down.

I run Powermaster 20/20 in mine. 20%oil 20%nitro. The oil residue out the exhaust is clear and clean. They must use some high quality oil! By the way it is all synthetic. A pattern flier told me to stay away from castor. I do believe that 2% will not hurt anything though.

_____________________________

Rex Birkinbine
rexbirk@aol.com

(in reply to Extra_flya)
       Post #: 5

YS91 What Fuel?? - 6/5/2002 9:29:33 PM   
Cheech



Posts: 842
Joined: 2/27/2002
From: Suburban Chicago, IL, USA
Status: offline 		That YS will REALLY love 30% heli fuel . It is high oil content and high nitro. The engine starts better, ldles longer transitions flawlessly and puts out great power. The fuel literally RUNS through he engine, keeping everything cool. You'll burn a tank faster - watch your time - but your engine will LOVE it.

-Cheech

(in reply to Extra_flya)
       Post #: 6

Page:   [1]
All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> RC Fuels >> YS91 What Fuel??
Page: [1]





Jump to:


Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Member Video Posts | RCU Video Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America

Kaango.com Classifieds

0.375RCU1