pigs

My Feedback: (3)

I can not locate a supplier of glow fuel of 5% nitro and 10 to 12% oil content for my Supre Tiger 3250. Does anyone know of a supplier or maybe another blend of fuel that will work in the engine?

JollyPopper

My Feedback: (6)

Does the paper work you got with the engine specify 10 to 12% oil content? The Tower Hobbies site says 16% oil for break in and after that 14% will work. As far as I am concerned, that means that 18% will work fine and that is easy to come up with. As for nitro content, you can find any percentage you like in the fuels using 18% oil content.

pigs

My Feedback: (3)

I do not have the paper work (used engines). Local Hobby owner (experienced flyer) and the Supre Tiger web site calls for 5% nitro with 10 to 12% oil. Currently using 5 nitro and 18 % oil and after several carb adjustments I struggle to get a smooth transition from idle to full throttle and it runs too rich.(Dead sticks easily when you pull the throttle to idle.

sturmovik60

Wildcat fuel used to make a fuel for supertiger big engines.

R8893

My Feedback: (20)

I run my ST 2500's on a fuel mix as follows: two parts Wildcat 18% oil, 10% nitro and one part methanol. Hence mixture is 12% oil, 6% nitro. I get the methanol from a local go-cart shop for $4 a gallon.
Chuck

Luft-Gangster

http://www.supertigre.com/engines/supg0268.html link to manual

Gray Beard

My Feedback: (-1)

I used 15% powermaster with 18% blended oil. Wildcat had 15% or 16% oil and for the short time Power Master wasn't being made I used that. I refuse to carry more then one type of fuel and I only had the one ST engine and it used what I had. It is a higher compression engine and likes a lower nitro fuel but the oil amount didn't seem to effect it.
It's easy to make your own FAI fuel without nitro, just 80% methanol alcohol and 20% castor oil. I get my oil from SIG, the alcohol from any speed shop. When I was making my own fuel I bought the alcohol in 15 gallon drums and was also able to buy my nitro from the speed shop, The Service Center.

WhiteRook

My Feedback: (38)

the methanol additive , called HEAT in the yellow bottle, will work to dilute the fuel down to 10 %

pigs

My Feedback: (3)

I have already purchased methanol and diluted the fuel to 3%nitro and 12% oil and the motor runs great. Thanks to everyone for the help. Methanol can be found at LP Gas Companies- they use it in the LP Tanks to keep moisture out so the pressure regulators do not freeze.

DGrant

My Feedback: (4)

You can actually run 0% nitro (FAI fuel) in that engine.... and use an "O.S. type F" glow-plug. Essentially the FAI fuel is methanol and oil(usually about 18%)... with no nitro added.

I use the same fuel and glow-plugs in my Moki's... which are in the same class(size and power) as the large SuperTigres.. I used to mix my own fuel buying the methanol from the local go-cart shop, and pre-mixing my oil at 18%... I used "Blendzall".. which is a castor/synthetic blend.. it ran just fine.. After doing the math though, and realizing I didn't save but a buck maybe by the time I bought oil, and took the time to mix it..... I just started using the FAI fuel.. just buy and fly. Still going strong in my Moki's.. even after 15yrs of hard flying they run great.

It sounds like you're running a bit shy on oil, but if thats what the manual calls for then ... I'm sure they know. Good luck with it.

Bax

My Feedback: (11)

The original instructions stated that the fuel should contain about 15% oil by volume until the engine is well broken in (SuperTigre's statement), and then you could go to 10%-12% oil content. The oil recommendation mentioned that it should be 100% castor oil for lubrication. No more than 5% nitromethane was recommended. If this blend was used, the engine ran superbly. All of the large 'Tigres would run very well on this mix, except the G-2300, which required no less than 18% oil content.

pigs

My Feedback: (3)

I am not real fond of Castrol due to the "mess". My current mix for this engine is 50% Castrol and 50% synthetic with 3% nitro and 12% oil. I would like to go to 100% synthetic like my other planes. I wonder how important it is that it be 100% Castrol?