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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> RC Fuels >> Ft-120
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Ft-120 - 7/13/2003 11:37:51 AM   
elmerfud



Posts: 160
Joined: 6/19/2003
From: phoenix, AZ,
Status: offline 		i have an OS FT 120 twin i was curious if running my coolpower™ 30% heli fuel is to much nitro for it>?
i would love to run same fuel in all my stuff .
i run it in both of my 40 sized planes. (and my 30 and 60 sized chopper) works perfect. it has the necessary oil content.. but i heard rumors that high nitro is OS motors. does not work well....

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"go west young man......fly year round"
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Ft-120 - 7/14/2003 6:40:47 PM   
Waco Driver



Posts: 158
Joined: 1/16/2003
From: Paris, ON, CANADA
Status: offline 		5-10% nitro fuel works very well in these engines. 30% nitro would be a waste of money in my view and may lead to detonation problems if run too lean. OS four strokes have higher compression ratios than the YS & later Saitos and do not need the high nitro fuel.

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MAAC 6273 L

(in reply to elmerfud)
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Ft-120 - 7/19/2003 2:22:44 AM   
Bax


 

Posts: 12451
Joined: 4/26/2002
From: Champaign, IL, USA
Status: online 		O.S. Max 4-stroke engines run best on 15% nitro or lower, except for the FS-120 Surpass I and II engines, which were set up for 20% oil and 20% nitro. The current FS-120 Surpass III comes from the factory for 20% oil and 10% nitro.

The O.S. Max multi-cylinder engines run best with a fuel that has at least 16% oil content and 5%-10% nitro. 15% nitro won't hurt them, though you won't see much performance improvement between 10% and 15% nitro.

_____________________________

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 elmerfud)
       Post #: 3

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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> RC Fuels >> Ft-120
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