Super Tigre problems
 

I have a Super Tigre G90 2-stroke that I am looking for a carb for. I want to replace the original super tigre carb with another carb that would be easier to tune. I have always had a problem tuning super tigre engines. I heard you could replace the original carb with a perry, O.S. or Magnum carb. Is this true? If so which carb fits the ST 90 and where is the best place to get one.

Map

RE: Super Tigre problems
 

The OS 7D Not in production will have to look for one at swap meets or the Bay

The Magnum/ASP 108 No longer in production? Might find one at www.justengines.unseen.org http://www.justengines.unseen.org/ac..._Spares_1.html

http://www.hobbypeople.net/gallery/280005.asp This is what I'd do will give you 500 rpm with even a 14 X 6 prop I two fixed with these carbs

And the Perry Can buy new. Will be trouble free

The best carb though is the Super Tiger

RE: Super Tigre problems
 

Hi

I recomend you put a PERRY PUMP and use an genuine SUPERTIGRE CARB.

Best wishes.

Gabi.

RE: Super Tigre problems
 

Mine run GREAT!

Just follow the instructions.

If you don't have them, you can get them online.

It is a great carb, adjusted properly.

RE: Super Tigre problems
 

Thanks for all the great information. I love this forum. You know you can always get great info.

Map

RE: Super Tigre problems
 

I have heard that super Tigre engines do not like high nitro. I have read to use 5% or 0% nitro. Is this true? Is there any other post that discuss this topic?

Map

RE: Super Tigre problems
 

http://www.supertigre.com/faq/product-faq.html#q22

All you need to know and you'll be buying SuperTigre carbs to put on other engines.

RE: Super Tigre problems
 

If it is an Italian ST, the carbs were not always easy to tune. The newer ones made in China have been improved with much more easier tunability and reliability.

RE: Super Tigre problems
 

Though the new parts will fit the old carbs, they are made a little different

RE: Super Tigre problems
 

Amen to that brother! :)

RE: Super Tigre problems
 

It is true.

I use "Super Tigre" fuel in my Super Tigres with good results. I've had 2 G-90s and an SK 90....they all ran (still run) very well.

RE: Super Tigre problems
 

The Terms "Super Tiger Fuel" and "Big Cat fuel" by some manufacturers refers to a fuel with 5% nitro <u>and 10-12% oil.</u> It was intended for the Super Tiger 2000, 2500, 3000 engines.

It shouldn't be used in the small ST engines

However Regular model airplane fuel with 5% nitro should work very well in the 40-90 ST engines

The ST2000, 2500, &amp; 3000 were replaced by the ST 2300 and ST 3250 some 10 yrs ago

The 2300 can be a nice engine but some were problem childs. the problems were all in the carb

The 2000 series was usually trouble free but were heavier than the newer engines

RE: Super Tigre problems
 

W8ye- good post -

To add a little info - the 2300 uses regular glow fuel with 18% lubrication like the 40-90 ST engines use. The chinese made 2300 carbs seem to be very good- at least the three 2300s I have that were chinese made run great using the original ST muffler.

I use 10% in my g90s which runs great in them. Some recommend lower nitro fuel in some of them. I have never done this.

To the best of my knowledge Super Tigre says the 2000, 2500, and the 3250 use the super T fuel.

Ed

RE: Super Tigre problems
 

On my g90 i put a crab off of my os 50 heli engine and it runs better than i ever has and also turns the prop 600 rpm faster.

RE: Super Tigre problems
 

I have one of those heli carbs. I don't have any use for it. It is new. I never thought about using it on a G 90?

RE: Super Tigre problems
 

It works great and is very easy to tune and it has a bigger bore so it gets more air. I put a Frank Bowman ring and that carb on it and it runs a lot better than it did new.

RE: Super Tigre problems
 

Dont get rid of that carb Jim, just in case one of your long lost relatives in Alabama ;) needs to buy it when he fires up his new ST90 and has need for more rpms .

RE: Super Tigre problems
 

Brillelli, Can you purchase these O.S. 50 Heli carbs? Does Tower sell them? Do they mount to the Super Tigre just like the stock carbs do?

Map

RE: Super Tigre problems
 

This is the one I have

http://www3.towerhobbies.com/cgi-bin...LXCA10&amp;P=7

http://www2.gpmd.com/imagel/o/losmg2423.jpg


This is a Stock Replacement #40C Carb for the O.S. .46FX-H engine. This is rotary-type carb with High and Low Speed needle adjustments.

INCLUDES: One #40C Carb One O-ring (carb to crankcase seal) OSMG6248 Two 3x5.4mm Phillips head screws</p>

SPECS: Inside Diameter: 8mm Outside Diameter: 13.5mm</p>

RE: Super Tigre problems
 

All I ever run in my G90 is Byrons 5%Nitro 20%castor/syn blend with the orginal carb and nothing extra. Always runs great. They do prefer lower nitro for sure.

RE: Super Tigre problems
 

here's the specs on othe G90 carb

I don't think mine will fit? and is not bigger

<pre>SPECS: Outside diameter of carb throat: .51" (13mm) Inside diameter of carb throat: .46" (11.8mm)</pre>

RE: Super Tigre problems
 

I belive it is this carb it is the 40E off of the 50sx-h. It mounts the same way the standerd one does, you can still buy them for $23.58. I belive it has a bigger bore but i am not sure.

http://www3.towerhobbies.com/cgi-bin...?&I=LXWW80&P=7

RE: Super Tigre problems
 

I've flown Supertigre for most of my life, and love them.
Had a K&amp;B .40- hated it, have a OS .50 and am getting ready to junk it. Love the Supertigers though. I'm running cool power 10% and the tigre .75 is running great.
I have learned though, that the Supertigre engines seem to like the synthetic fuels rather than the "castor" fuels.

RE: Super Tigre problems
 

fjk6807,
You said it best. All those little pain in the butt ST unique carb issues make them the worst by far. Once you swap it out it is a whole new world.

RE: Super Tigre problems
 

flyboy75- I have to disagree with your comments. I have had to date 17 different ST engines. I have been in the hobby for 30 plus years. I have never had to replace a stock ST carb unless due to damage from a crash. They are made just as good as most others. With a little patience they are good carbs. The only problems they have for the most part is due to trash getting in the needle valve. For some reason ST carbs seem to be more susceptible to particles of trash in the fuel. With an inline filter this problem is resolved. As long as you make sure the carb is seated properly against the o-ring to stop air bleed in the throat these carbs do great.