What fuel to use on my NEW O.S. FS-120 III Surpass 4-Stroke w/Pump  
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What fuel to use on my NEW O.S. FS-120 III Surpass 4-St... - 6/28/2008 9:46:45 AM   
t0riownageeee


 

Posts: 45
Joined: 4/26/2008
From: Raege, NORWAY
Status: offline 		Ey guys!
Just brought a new O.S. FS-120 III Surpass 4-Stroke w/Pump and on the paper it says 5-15% nitromethane with atleast 18% lubricant...
In my district there is only two dealers and they only got two types of fuel...

20% nitromethane with 20% lubricant

and

15% nitromethane with 15% lubricant

What is best to use?

Isent the lubricant most important?...
       Post #: 1

RE: What fuel to use on my NEW O.S. FS-120 III Surpass... - 6/28/2008 10:08:16 AM   
DarZeelon



Posts: 7107
Joined: 4/9/2003
From: Rosh-Ha'Ayin, ISRAEL
Status: online 		Orio,


Neither is good for your engine.

Too much nitro can cause damage and running problems, just as can too little oil...


Just mix your own fuel.

OS four-stroke engines run better on fuel with some castor oil in the mix and with low nitro (5% is quite enough)...


Hey, you live in Norway (Europe), where nitro is a... well... four-letter-word...


You cannot tell me fuel will less nitro is not available there ... I just refuse to believe this...


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(in reply to t0riownageeee)
       Post #: 2

RE: What fuel to use on my NEW O.S. FS-120 III Surpass... - 6/28/2008 10:26:10 AM   
t0riownageeee


 

Posts: 45
Joined: 4/26/2008
From: Raege, NORWAY
Status: offline 		Well.. I asked^^
What best of these.. plz ..

(in reply to DarZeelon)
       Post #: 3

RE: What fuel to use on my NEW O.S. FS-120 III Surpass... - 6/28/2008 10:39:54 AM   
liquid_TR



Posts: 512
Joined: 4/8/2007
From: ISTANBUL, TURKEY
Status: online 		20/20 will do just fine for this engine.

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       Post #: 4

RE: What fuel to use on my NEW O.S. FS-120 III Surpass... - 6/28/2008 10:42:31 AM   
t0riownageeee


 

Posts: 45
Joined: 4/26/2008
From: Raege, NORWAY
Status: offline 		kk ty

(in reply to liquid_TR)
       Post #: 5

RE: What fuel to use on my NEW O.S. FS-120 III Surpass... - 6/28/2008 12:18:05 PM   
DarZeelon



Posts: 7107
Joined: 4/9/2003
From: Rosh-Ha'Ayin, ISRAEL
Status: online
quote:

ORIGINAL: t0riownageeee

Well.. I asked^^
What best of these.. plz ..


Orio,


So I'm telling you!

OS will not honor the warranty with either of these fuels.


If you are unable to, or too lazy to mix your own fuel, or not willing to go to the next town where there are more choices...


I will not take the responsibility, to tell you which of these wrong choices is right (...).



I don't think Erol should have done so either...



_____________________________

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MVVS - Jett - Nelson - Bolly - Mejzlik

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       Post #: 6

RE: What fuel to use on my NEW O.S. FS-120 III Surpass... - 6/28/2008 12:50:27 PM   
gunfighterII



Posts: 2448
Joined: 11/28/2004
From: Lincoln, NE, USA
Status: offline 		Dar,
Please explain how O.S. can tell what kind of fuel you are using to deny warranty work?

If you can't answer the question with a little respect, don't bother. Your arrogance is getting the best of you.

Orio,
Buy the 15% and get some castor and add to it.

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       Post #: 7

RE: What fuel to use on my NEW O.S. FS-120 III Surpass... - 6/28/2008 12:59:11 PM   
summerwind


 

Posts: 1242
Joined: 2/16/2007
From: fresno, CA, USA
Status: offline 		Orio,

better yet, buy one of each and combine them.........it's going to drink fuel like crazy anyways right?
this way you cut the nitro percentage down to close to 15% (probably end up at that anyways), and you will be in between the oil percentage. just keep it on the rich side, or let it smoke as they say.

(in reply to gunfighterII)
       Post #: 8

RE: What fuel to use on my NEW O.S. FS-120 III Surpass... - 6/28/2008 4:09:47 PM   
DarZeelon



Posts: 7107
Joined: 4/9/2003
From: Rosh-Ha'Ayin, ISRAEL
Status: online
quote:

ORIGINAL: gunfighterII

Dar,
Please explain how O.S. can tell what kind of fuel you are using to deny warranty work?

If you can't answer the question with a little respect, don't bother. Your arrogance is getting the best of you.



GF,


Please read my post #2 in this thread...

As you can see, the reply was quite respectful, except where I added what I know of availability of nitro in Europe...


I have been around long enough to know that saying there is no 0-low% nitro fuel available in any European country, is like saying there is no Porsche/Lamborghini/Ferrari dealer for Beverly Hills 90211...


If the guy asks if he should use '1' or '2', I have the option to say that neither is good and that he should obtain '3'.

If the guy presses on and says 'No; either '1', or '2'...' You can't say '3'...' THIS is arrogance! I can then then say what I think and I just did... I am being assertive; not arrogant. You should be able to tell the difference.


There are obviously guidelines, to wear marks and other tell-tale signs, to usage of fuel with insufficient/inadequate oil and/or excessive nitro, which OS service personnel follow... And experience (of others who owned more OS engines than I did) tells me THEY DO void the warranty outright, if a sign of either 'violation' is detected.


Is it arrogance on my part, to try keeping this person out of avoidable trouble!?

Probably, as SummerWind suggested, since the high nitro will force quite a rich mixture, no warranty issue will arise...


But this guy is still much better off getting the right fuel for this engine; 18-20% castor-synthetic lube mix and 5-10% nitro (15% is borderline).


_____________________________

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MVVS - Jett - Nelson - Bolly - Mejzlik

(in reply to gunfighterII)
       Post #: 9

RE: What fuel to use on my NEW O.S. FS-120 III Surpass... - 6/28/2008 7:38:49 PM   
David Bathe



Posts: 184
Joined: 3/18/2008
From: Oslo, NORWAY
Status: offline 		15-15 synth works just fine.

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       Post #: 10

RE: What fuel to use on my NEW O.S. FS-120 III Surpass... - 6/28/2008 8:32:37 PM   
t0riownageeee


 

Posts: 45
Joined: 4/26/2008
From: Raege, NORWAY
Status: offline 		ey, DarZeelon ...
Since you know my country that good... Why dont ya come and explain me were to get 15% / 18%...

Everybody, ty for your replay...
I brought fuel today, and the engine runs like **************!
I love the sound/power and everything
GG

(in reply to David Bathe)
       Post #: 11

RE: What fuel to use on my NEW O.S. FS-120 III Surpass... - 6/28/2008 8:38:03 PM   
masama1107


 

Posts: 18
Joined: 6/29/2004
From: Long Beach, CA, USA
Status: offline 		I use Byron Fuel 15% NItro 20% Synthetic/Castor Blend in my OS 1.20 Surpass III with Pump.

I have used such fuel for over two years with that engine is in one of my favorite airplanes.

I can asure you guys my engine is in great condition with over 100 operational hours (around 550 12 min documented flights) with great compression. I have replaced shaft bearings twice, and besides the valve clearance adjusted every 20 or so hours, I have done nothing else to my engine.

It is a very strong runner engine and it really likes the Byron blend fuel.

It spins an APC 17X6 prop at about 9400 rpm at sea level.

Hope this helps....

(in reply to David Bathe)
       Post #: 12

RE: What fuel to use on my NEW O.S. FS-120 III Surpass... - 6/28/2008 9:25:17 PM   
DarZeelon



Posts: 7107
Joined: 4/9/2003
From: Rosh-Ha'Ayin, ISRAEL
Status: online
quote:

ORIGINAL: t0riownageeee

Hey, DarZeelon ...
Since you know my country that good... Why don't you come and explain to me were to get 15% / 18%...



Since my Norwegian isn't very good (to say the least), I suggest you try searching this web page.

I am sure most of them have the fuels you are looking for; not only what you had listed.

Maybe they would even be willing to ship to your town.


If not, your countryman Jens Skogstad (screen name - Motorboy) will be happy to guide you. Send him a PM.

Although he does have a hearing disability, you can easily communicate textually.


_____________________________

Dar Zeelon - ISRAEL - ddzeelon@gmail.com
MVVS - Jett - Nelson - Bolly - Mejzlik

(in reply to t0riownageeee)
       Post #: 13

RE: What fuel to use on my NEW O.S. FS-120 III Surpass... - 6/28/2008 9:43:25 PM   
gunfighterII



Posts: 2448
Joined: 11/28/2004
From: Lincoln, NE, USA
Status: offline 		Dar,
I did'nt have a problem with post #2 It was post #6 that caught my attention.

To tell him what's available in his country, and then to infer the guy might be unable, lazy, and unwilling to do it your way, is arrogant in my opinion. What if the next town is 100 miles away?
What if the next towns hobby store is twice the price?
What if he can't get the components to mix his own fuel?

I've used everything from 5% up to 30% fuel in my 4 strokes without issue, including Powermaster, Byron, Omega and Cool Power. He would be just fine with 20-20. The 15 would work also, but I would prefer a bit more oil.

I don't think O.S. is going to deny alot of warranty claims due to improper fuel use, which they could'nt prove or even want to try. I would bet they are more interested in keeping their customer base happy. I've never heard of a rejected claim thru O.S. on the basis of fuel used.

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       Post #: 14

RE: What fuel to use on my NEW O.S. FS-120 III Surpass... - 6/28/2008 10:01:31 PM