O.S. 1.60fx What fuel to use?  
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 >> O.S. 1.60fx What fuel to use?
Page: [1]

Login
Message << Older Topic   Newer Topic >>
O.S. 1.60fx What fuel to use? - 5/6/2002 6:40:52 AM   
Treeseeker


 

Posts: 90
Joined: 12/30/2001
From: Brunswick, OH, USA
Status: offline 		I ran my 1.60 for the first time today with (Coolpower 10%). This engine seems to have alot of power. Any tips or tricks on breaking this engine in? Thanks
       Post #: 1

O.S. 1.60fx What fuel to use? - 5/6/2002 8:23:11 AM   
Fuelman


 

Posts: 1017
Joined: 12/31/2001
From: Jordan, NY, USA
Status: offline 		Yes,
I have one of the OS 160 engines and I spent a considerable amount of time (and fuel) breaking it in. It is a friendly engine with plenty of power.
For break in I:
Used a low nitro / high oil fuel and run it very very rich for the first several tanks, first two tanks it never left a 4-stroke running mode. After that, I leaned it out a few clicks a time each tank. After about 12 tanks I had it holding a rock steady maximum rpm setting on the bench.

For break in, I would recommend a very low nitro (cheaper and runs cooler) like 0% or 5%. I also recommend at least a little castor, especially during break in and I recommend more oil content than the 18% OS states as minimums, I recommend 20% oil by volume.

As far as flying, I have flown this engine with every fuel we make from 0% through 30%. This engine performs very well with 5%, 10% and 15% fuel, all fuels with 20% oil (18% syn/2% cas).

I think you'll like this engine.

Fuelman


_____________________________

Fuelman
Cooper Fuels LLC

(in reply to Treeseeker)
       Post #: 2

Re: O.S. 1.60fx What fuel to use? - 5/6/2002 8:24:08 AM   
DLT


 

Posts: 442
Joined: 12/13/2001
From: Foley, AL, USA
Status: offline 		[QUOTE]Originally posted by Treeseeker
I ran my 1.60 for the first time today with (Coolpower 10%). This engine seems to have alot of power. Any tips or tricks on breaking this engine in? Thanks [/QUOTE] Treeseeker: Your ownwers manual says to use 10 -15 % nitro but also states to use some fuel with castor in it as well. You also need to use 20% oil content (per instructions). It is a [COLOR=red]ringed [/COLOR] engine and needs some castor for sure.

(in reply to Treeseeker)
       Post #: 3

Fuel - 5/6/2002 8:27:40 AM   
Homebrewer



Posts: 1335
Joined: 12/29/2001
From: Colorado Springs, CO, USA
Status: offline 		Your Coolpower 10% is a perfect fuel for this engine. Larger engines need less oil than smaller engines (volume to surface area mathematical relationships-large ST engines use only 12% oil) and the 17% oil content in the fuel you are currently using is appropriate. Your engine is ringed and you definitely want to keep her VERY rich during the first several runs. Good luck and happy flying.

(in reply to Treeseeker)
       Post #: 4

OS Engines - 5/7/2002 2:35:10 AM   
Wildcat Fuels


 

Posts: 79
Joined: 2/22/2002
From: Kentucky
Status: offline 		Treeseeker,

An all syntheic fuel will be just fine in this motor. I recommend you stick to the owners manual for the oil content though, 18% minimum in this engine. Remember, the warranty is by OS not the fuel company.

(in reply to Treeseeker)
       Post #: 5

O.S. 1.60fx What fuel to use? - 5/7/2002 7:32:50 AM   
hilleyja


 

Posts: 2184
Joined: 1/7/2002
From: Salem, WV, USA
Status: offline 		Homebrewer,

The OS FX 1.60 (and for that matter the Moki 1.80) is not anything like the ST engines and will not survive a low oil content. The manufacturers for both of these engines stress high oil content and low nitro. Oz per Oz these two engines have almost 50% more horsepower per size than the STs. My ST-3000 had only 3 hp for 30cc engine. My OS FX 1.60 (28cc) has all of 3.7 hp. The OS is more than a pound lighter than the ST3000. It will also not survive an all-synthetic oil fuel. How do I know that??? When I first ran my FX 1.60 I used Coolpower 10% exclusively. Even running slopping rich I still ended up having to replace the ring and sleeve after less than a gallon of fuel. When I told Hobby Services what fuel I was using they gave me a hard time about fixing the engine under warrantee. Lucky for me they finally did accept it for warrantee. The repair job would have been ~$160.00. Since then I've been running Wildcat 10-15% Sport fuel and the OS FX 1.60 has been a dream.


_____________________________

Jim Hilley
AMA #671825
RCCA# 758
Twist 150 Brotherhood #14

(in reply to Treeseeker)
       Post #: 6

coolpower - 5/28/2002 9:03:15 PM   
rcflier_gi



Posts: 465
Joined: 5/10/2002
From: Grand Island, NY, USA
Status: offline 		I've been running 15% Coolpower in mine. I checked the OS manual and it doesn't state that castor oil must be used.

This is the quote I saw:

"For the best performance, a fuel containing 5% to 20% nitromethane is preferable. Lubricants may be either castor-oil or a suitable synthetic (or a blend of both) provided that they are always of top quality.


_____________________________

Current airworthy planes :
SIG Mayhem 3D w/OS 1.20FS pump

(in reply to Treeseeker)
       Post #: 7

O.S. 1.60fx What fuel to use? - 5/28/2002 9:07:34 PM   
Dazzler



Posts: 1471
Joined: 1/5/2002
From: Bedford Heights, OH, USA
Status: offline 		I've been running Wildcat 10% 18% oil, runs great. Daz...


_____________________________

Freya
YS80

(in reply to Treeseeker)
       Post #: 8

O.S. 1.60fx What fuel to use? - 5/29/2002 1:12:42 AM   
hilleyja


 

Posts: 2184
Joined: 1/7/2002
From: Salem, WV, USA
Status: offline 		rcflier_gi,

How much time on the engine? I went just over a gallon before she burned out the ring and sleeve. Prior to that she gave me no hint of a problem.


_____________________________

Jim Hilley
AMA #671825
RCCA# 758
Twist 150 Brotherhood #14

(in reply to Treeseeker)
       Post #: 9

time - 5/29/2002 7:06:25 AM   
rcflier_gi



Posts: 465
Joined: 5/10/2002
From: Grand Island, NY, USA
Status: offline 		I have run about a 3/4 gallon on the ground and have about 1 gallon in flights. You got me a little nervous so I just pulled the head off to give it an inspection. The cylinder wall is very smooth with no visible scoring and has a highly polished feel. The piston head is mainly black (no flaky carbon build-up) with a slight wash on the intake side. The combustion dome in the head is also mainly black, again with a slight wash on the intake side.

My OS 1.20FS (ringed engine) runs great on 15% Cool Power and its has 10+ gallons through it so I was hoping to use the same fuel in the 1.60. I bought two cases of Cool Power back in April. Wild Cat fuel is hard to come by around here. Two of the LHS carry Cool Power and Omega and the other LHS carries Byron.


_____________________________

Current airworthy planes :
SIG Mayhem 3D w/OS 1.20FS pump

(in reply to Treeseeker)
       Post #: 10

O.S. 1.60fx What fuel to use? - 5/29/2002 8:03:45 AM   
hilleyja


 

Posts: 2184
Joined: 1/7/2002
From: Salem, WV, USA
Status: offline 		rcflier_gi,

Carry this thread into the ENGINE FORUM and get AnnMarie's opinion. My suggestion at this point is to buy a quart of Castor and mix it with the Coolpower so that you have about a 20/80 mix, which is similar to Omega and Wildcat -- that would be approximately 6 oz of Castor to a gallon of Coolpower and will give you an overall oil content of about 23%. I got a quart from a hobby shop in Florida and it cost me less than $5.00.

BTW, just to cool your concerns somewhat. Though my problem with the engine was attributed to the Coolpower, it probably was running lean at the time the sleeve and ring where damaged. I kept the engine on the rich side but based that on the smoke that exited the exhaust. Atmospheric conditions can change from day to day and have an effect on whether the engine is lean or rich. The service agency attributed the damage to running the engine lean -- my contention is that that might have been the case but if so it was a rare occurence and should not have cooked the engine so easily. They did repair it under warrantee. Its been running on Wildcat 15% ever since and has been a dream.

< Message edited by hilleja -- May 29 2002 3:10AM >


_____________________________

Jim Hilley
AMA #671825
RCCA# 758
Twist 150 Brotherhood #14

(in reply to Treeseeker)
       Post #: 11

Lean RUns Kill engines, not fuel - 5/29/2002 8:31:46 AM   
Homebrewer



Posts: 1335
Joined: 12/29/2001
From: Colorado Springs, CO, USA
Status: offline 		Coolpower is a 100% synthetic fuel and it offers less lean run protection than a castor based fuel. Comparing Coolpower to Wildcat is comparing apples to oranges. Wildcat's most popular fuel is 80/20 syn/castor mix and offers better protection to an overlean run than a straight synthetic fuel.

Your best bet, regardless of fuel, is to do the pinch test before every flight. I've had some days (7 hours at the field morning to sundown) that required me to adjust my needle 3-4 times to compensate for changes in temp/pressure altitude.

BTW, Coolpower is 17% oil (except for their performance pro blends which are higher in oil content).

If you like Coolpower and want some castor in your fuel, than Morgan fuel also makes Omega which is a 70/30 blend, 17% total oil content. I personally don't care for that much castor in my fuel.

Wildcat's fuel is 80/20 and I also prefer slightly less castor in my fuel.

Currently, I'm burning a mixture of Coolpower 20/20 mixed 50/50 with Wildcat premium extra 10%. This blend gives me a nice 15% nitro fuel that contains 19% total oil by volume that is 90% synthetic, 10% castor. Runs great in my 2 strokes and offers some castor protection, mainly for bearings, since I never run any of my engines lean.

(in reply to Treeseeker)
       Post #: 12

Castor - 5/29/2002 8:47:31 AM   
rcflier_gi



Posts: 465
Joined: 5/10/2002
From: Grand Island, NY, USA
Status: offline 		I'll go to the LHS tomorrow and get some Castor and give that a try in my 1.60. But I'll continue to use straight Cool Power in my 1.20FS. I don't want that Castor gumming up my valves.


_____________________________

Current airworthy planes :
SIG Mayhem 3D w/OS 1.20FS pump

(in reply to Treeseeker)
       Post #: 13

O.S. 1.60fx What fuel to use? - 11/14/2002 7:56:04 PM   
ArthurD


 

Posts: 181
Joined: 8/23/2002
From: Jacksonville, FL, USA
Status: offline 		Can you guys help me with a fuel problem similar to the subject you're discussing?

I just bought a Magnum ARF which has a Webra 50 w/pipe which specs "Pro Synth 10% ONLY".

What do I ask for at my LHS who sells Morgan fuels?

_____________________________

Arthur

(in reply to Treeseeker)
       Post #: 14

My personal opinion - 11/14/2002 10:36:16 PM   
Homebrewer



Posts: 1335
Joined: 12/29/2001
From: Colorado Springs, CO, USA
Status: offline 		I would never run a piped engine on a 100% synthetic fuel. Ome