Bax

My Feedback: (11)

The SuperTigre G2300 CAN NOT use the low-oil "ST" fuels. It must have an oil content of at least 18%.

The other big 'Tigres' can use fuel with an oil content of 10%-12% once they are fully-broken in.

bdtsr

My Feedback: (5)

I should have clarified myself on the engine sizes. According to the paperwork that came from SuperTigre my above post goes towards the 2000, 2500, 3000, 3250, & 4500. Most fuels labeled "ST" fuel are a castor & synthetic blend. When I aquired my 2500, I called customer support regarding oil & nitro content. I was told 15% nitro and 18+% oil was fine. As a matter of fact, the person I spoke with was running a 4500 on 30% nitro heli fuel with 27% oil!

coetgen

I'm currently using 15% nitro with 18% caster/synth mix and an OS #F plug.

I've even tried going to 10% and 25% nitro...It actually seems to run better on the 10%.

Maybe I could try putting a control arm on the needle valve, and mixing in some control to lean it during mid range transition? Anyone ever tried that?

John Cole

My Feedback: (4)

When I was looking for a reliable large 2-stroke, I figured I`d just ask the contest guys that were actually using them every weekend. I settled on a 3000, but was intimidated by all the "fix-ups" that some of the locals were doing. I have alot of faith in ST, they used to make fantastic FF engines. So why did they need all this 'garage engineering' anyway? Had Super Tigre fired all their smart people? The short story is that alot of the locals tried to run the poor ole 3000 like a turbine...more RPM=good motor. But the 3000 has a very flat torque curve, rather low in the rpm range. Guys were over-turning them with small props, with the end effect being the engine going lean since the ports were not open long enough. Couple this with too much oil (which causes overheating due to pre-ignition) and hey, while we`re at it, toss in 15% nitro! Poor ole 3000.
Here`s what works, using the engine as it comes out of the box (including that wonderful ST plug!)... Break-in with 12% oil, 1%-3% nitro (helps when hand-starting cold, but not necessary) and a 20-8 or 22-8 prop. After a gallon of fuel, you can go to 9%-10% oil, same nitro, and 22-8 to 22-10 prop. This engine produces lots of torque, and is ideal for most scale and sport models. If you want to hover so badly, I hear they make really good r/c helicopters these days. And for those folks that just gotta change things on their engines, well, go on ahead, and please send me your unwanted ST plugs and carbs. But the main thing, always have fun.

John Cole

yaron_k

My Feedback: (45)

Hi there;
Read your elaborated data regarding the tigres.
I need an advise - I'm about to purchase a NIB ST 2500, and wondered if I should prefer the newer 2300. I know the 2300 is produced in China and the 2500is a genuine Italian, but I don't really know which one to prefer.
Regarding carburation - will an OS-7L carb do the job as well?

Thanks

RJConnet

yaron-k,

Read my post on the ST 2300 (Chinese) in the User Product Review forum. I am totally satisfied with this engine. The Carb. is one of the least fussy I have used.

RJ

bdtsr

My Feedback: (5)

The original 2300 is an Italian made engine. Yes the "New" engines are at least put together in China. The first 2300s had pretty bad mid-range problems. I don't know about the newer Chinese ones. The 2300 also must be run like other sport 2 strokes, 15% nitro and 18 to 20% oil. Do not use ST type fuels in it, you will burn it up. ST fuels are only to be used in the 2000, 2500, 3000, 3250, and 4500 providing that the oil is all castor. If you use a blend, it must be 18% or higher as per the ST documentation that was supplied with a 2500 that I bought. If your plane is an aerobatic plane (Extra, Cap, Edge, etc.) the 2300 may be a better choice (even though my SIG Cap has a 2500 in it). For a war bird or similar style plane where torque is the key, the 2500 would do very well there. Remember, the "BIG" ST's are heavier than most other similar displacement engines.

Redrata

My Feedback: (3)

Hi

I break in my new ST 2300 as follows:
15% synthetic
5% castor oil (at least)
18*8 MA
10% nitro
OS F

After 12 min. of break in as per instructions, the crankcase collapse. It has a hole of the size of a small coin.
The engine is now traveling to service, I donĀ“t know what they are going to do.
What do you think?

bdtsr

My Feedback: (5)

How old is your engine (when did you buy it)? Just wondering if it's a Chinese or Italian engine.

Redrata

My Feedback: (3)

I bougth the engine at Tower Hobbies during the last days of February this year, in the crankcase was written " made in china" if my memory not fails.

bdtsr

My Feedback: (5)

Well I hope yours is just a one time thing. It would be a shame if the quality has fallen off. I think you will be getting a new engine though. Try posting your problem in the manufacturers engine support forum here on RCU. Maybe Bill Baxter has some input.

Redrata

My Feedback: (3)

I wrote to engines support a direct e mail. They said that they are going to see how they can help me once they get the engine. I am not able to see another alternative but replace the engine. To be fair with them, they also said that this is a very rare case. I hope they could replace that engine, I was very enthusiastic about Super Tigre and I dont want to lose my money. Thanks for your input.

scottfl78

you got me scurrrd haha I got a 2300 on order for a GP Giles 202... My first big glow engine... The LHS owner says there is a secret to breaking it in and he is going to help me... I think he said to put the old OS 1.08 carb on it... I dont feel like messing with it but I have access to a full machine shop so I can if need be... Some one showed me this link http://www.rcaerobats.net/STEng/Supertigre.htm and these guys suggest a few simple mods what do you all think... I hope I can just fly it and not have to fool around with it

Redrata

My Feedback: (3)

I hope so. The engine sounds very good with a bisson muffler (one pipe restricted)
By the way, people from Super Tigre service replaced me the engine some days ago, I think they are very professional and really service oriented people.

Hobbsy

My Feedback: (102)

Bill Baxter has a header at the top of the SuperTigre Support Forum on setting up the ST carbs.

Bob Yeager

My Feedback: (5)

I have had a GP Giles ARF since the days when you could get them delivered to your door for $185. I never assembled it, due primarily to the "Bad Press", ie.: weak fuze, wing failures, incidence problems, etc., etc., etc. Geistware, and others, have posted some invaluable information regarding this ARF and I have decided to take the plunge and get it in the air.

You guys have sold me on the 2300. You can't beat the current deal from Tower. I have two new Mokis, a 1.8 and a 2.1, but I feel that they would be way too heavy. The OS 1.6 would have more "grunt" than the 2300, but for the extra $100, probably not that much. I am not a 3Der, but just attempt to struggle through the IMAC basic sequence. I only hope that the 2300 will have enough "beans" for me to fly the IMAC basic sequence at the 5000' altitude where my field is located.

Regards to all!

tommy s

My Feedback: (55)

There's lots of information available on fixing the mid-range problem with
the 2300. Check out :
www.rcaerobats.net

tommy s

Gordo-ProBro

That's GREAT news! I'm so glad to hear a good report on the company. I love my 3000.

RJConnet

Hey Guys,

Don't touch those Carbs till you try it as it comes out of the box. Mine has been perfect and I have touched nothing but the Hi-speed needle and a slight leaning of the Lo-speed needle as the engine was breaking in. Mid-range is awesome with no tendency to go lean or rich. It is now turning the APC 17-6 peaked at 9700 RPM backed off to 9400 for flying. I tried the APC 18-6W today but it loaded the engine a little too much (8200 RPM) and didn't pull near as hard as the 17-6. This engine would be perfect in the GP G202, I am flying my G202 with a GMS 1.2 and I'm really tempted to swap it out. I'm still flying the ST with a Bisson muffler with one outlet plugged. Break-in was a piece of cake, about 16 ounces rich on the ground and since then it has all been air time.. [8D][8D]...........RJ

mercula

My Feedback: (1)

How do the sizes convert ? Ive got a 2000 , I think the 2300
is a 1.40 ? So what does that make my 2000 ?
Thanks

bdtsr

My Feedback: (5)

The 2000 is a 1.2 cube motor. The 2500 is a 1.5 cube motor. The 2300 is a 1.4 and a completely different animal. Look on the left side mounting lug (viewed from the back of the engine) and see if it is stamped 25cc. If it is you have the 2500, if not it's a 2000 (I have both and photo if you need it).

Flyboy Dave

My Feedback: (21)

The 3000 is a 1.8 cu. in.

ErnRemy

I tried my OS 7D carb on my st3000 and yes I need to make an adapter but found that if you take a copper pipe joiner for 1/2 inch pipe and split it down the side and remove a small portion it will fit perfect in the barrel of the motor and then the carb fits in it. The oring seals at the top so do not worry to much about a gap in the spacer as long as it is on the side away from the bolt tightener.

aatiger

My Feedback: (26)

Hello RJConnet,

I just bought a ST2300, could you tell me and othes how you setup your engine. Any dos and don'ts. Many Thanks

RJConnet

Hey Tiger,

I hope yours works out as well as mine did. I didn't do anything special, just mounted it on the front of my plane (Stinger 120) and tied the plane down, opened the main needle valve about 3 turns and choked it for about 5 flips with the throttle wide open. Then about 3 flips with no choke, close the throttle to a high idle position attach the glo-starter and a couple of back flips and it was running. Then opened the throttle and turned the needle in for a fast 4-cycle. Ran out about 16 Oz. that way stopping to let it cool every 3 or 4 minutes. Then I leaned it just to the point where it breaks into a 2-cycle and flew it that way for a few tankfuls before leaning it further. The low speed adjustment had to be turned in slightly as the engine was breaking in to achieve a good transition from idle to mid and high speed. Fuel has been Omega 5%, prop is APC 17-6, using the plug that came with the engine. Have not had a dead-stick in 3 gallons of fuel now and it pulls my 13 Lb. Stinger out af a hover not like a rocket but fast enough for me.
I am presently using a Bisson pitts muffler with one outlet plugged. [8D][8D]........RJ