Super Tigre 2000 - 3000 Engines
#79
My Feedback: (16)
RE: Super Tigre 2000 - 3000 Engines
Joe,
You are going to need to Email Frank or call him on the phone.
He doesn't post on RCU very often. His user name is Frank Bowman on RCUniverse
He can send three rings in one envelope also.
Frank Bowman
[email protected]
1211 N Allen Ave
Farmington NM 87401-3568.
Phone: (505) 327-0696
You are going to need to Email Frank or call him on the phone.
He doesn't post on RCU very often. His user name is Frank Bowman on RCUniverse
He can send three rings in one envelope also.
Frank Bowman
[email protected]
1211 N Allen Ave
Farmington NM 87401-3568.
Phone: (505) 327-0696
#81
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Join Date: Jun 2009
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RE: Super Tigre 2000 - 3000 Engines
I have a NIB ST 2500 but never put it in anything due to the carb issues I heard about years ago. Got it cheap, kept it all this time and found this thread. So now I'm thinking about which plane to put it in and wondered how big is too big? I like the Dynaflite Decathalon!
#82
Junior Member
#83
Junior Member
RE: Super Tigre 2000 - 3000 Engines
oh and the rings worked very well.
i made a ring compressor so it would be easyer for my customer
get the piston and ring back in the sleeve.
joe
i made a ring compressor so it would be easyer for my customer
get the piston and ring back in the sleeve.
joe
#85
Senior Member
My Feedback: (7)
After running smaller glow engines for several decades I have recently acquired a G20, a 2500, and a 3000 and am enjoying how these big dudes run. I mixed up some fuel with 11% oil and 3% nitro based on posts I've seen here and elsewhere, and it seems to work fine on the bench with all 3 engines. Now I see your quote above and I'm wondering why would engines in the same size range, from the same manufacturer, want such radically different oil content? I certainly will switch to 18% oil for the G20 if necessary, but I'm having trouble understanding why that should be necessary. The G20 sounds the same as the others and makes white smoke when I twist the needle to the left, doesn't run hot, idles fine, etc. What determines how much oil is enough? Other than the death rattle after you've burned it up, that is.
Thx,
Duane
#86
My Feedback: (11)
The SuperTigre G20/2300 was designed with different tolerance and operating pressures in mind, which is why the engine requires a higher-oil fuel. It must have fuel with no less than 18% oil content by volume. The 2300 was designed with FAI Pattern in mind, which means that the fuel draw could be compromised in some of the maneuvers. The other engines were intended more for scale-type flying. When fuel draw cannot be guaranteed to be constant, higher-oil fuel is used to prevent damage from the times when the engine is running leaner due to the different fuel draw rates.
Sound and smoke won't tell you if a fuel is right for the engine, they can only tell you if the engine is getting a good fuel/air mixture. You can get a good fuel/air mixture regardless of the oil content because you have a wide range of adjustment to the needle.
Sound and smoke won't tell you if a fuel is right for the engine, they can only tell you if the engine is getting a good fuel/air mixture. You can get a good fuel/air mixture regardless of the oil content because you have a wide range of adjustment to the needle.
#88
The 2300 was designed with FAI Pattern in mind, which means that the fuel draw could be compromised in some of the maneuvers. -- When fuel draw cannot be guaranteed to be constant, higher-oil fuel is used to prevent damage from the times when the engine is running leaner due to the different fuel draw rates.
#89
The SuperTigre G20/2300 was designed with different tolerance and operating pressures in mind, which is why the engine requires a higher-oil fuel. It must have fuel with no less than 18% oil content by volume. The 2300 was designed with FAI Pattern in mind, which means that the fuel draw could be compromised in some of the maneuvers. The other engines were intended more for scale-type flying. When fuel draw cannot be guaranteed to be constant, higher-oil fuel is used to prevent damage from the times when the engine is running leaner due to the different fuel draw rates.
Sound and smoke won't tell you if a fuel is right for the engine, they can only tell you if the engine is getting a good fuel/air mixture. You can get a good fuel/air mixture regardless of the oil content because you have a wide range of adjustment to the needle.
Sound and smoke won't tell you if a fuel is right for the engine, they can only tell you if the engine is getting a good fuel/air mixture. You can get a good fuel/air mixture regardless of the oil content because you have a wide range of adjustment to the needle.
#90
My Feedback: (11)
To answer Prigal, the G20/2300 will be destroyed if you a low-oil fuel, so I likely meant to say "clearances" and not "tolerances" above. The S-2000, S-2500, S-3000, G-3250, and G-4500 need to be run on fuel that's 12%-15% oil until they are well broken-in, and then fuel with an oil content of 10%-12% can be used. SuperTigre recommended that the oil be 100% castor oil in all cases. That's how they designed the engines.
#91
To answer Prigal, the G20/2300 will be destroyed if you a low-oil fuel, so I likely meant to say "clearances" and not "tolerances" above. The S-2000, S-2500, S-3000, G-3250, and G-4500 need to be run on fuel that's 12%-15% oil until they are well broken-in, and then fuel with an oil content of 10%-12% can be used. SuperTigre recommended that the oil be 100% castor oil in all cases. That's how they designed the engines.
#92
To answer Prigal, the G20/2300 will be destroyed if you a low-oil fuel, so I likely meant to say "clearances" and not "tolerances" above. The S-2000, S-2500, S-3000, G-3250, and G-4500 need to be run on fuel that's 12%-15% oil until they are well broken-in, and then fuel with an oil content of 10%-12% can be used. SuperTigre recommended that the oil be 100% castor oil in all cases. That's how they designed the engines.
The conrod is beefy in design and the crankpin is wider than most other engines with similar capacities, I think it will take a lot of abuse before giving up. I know it was not designed to be used with gasoline but 'fiddling' is part of the hobby and anyway it is no longer under warranty. Do you have a view on oil contents with gasoline?
#93
My Feedback: (11)
We have no suggestion for a fuel/oil mix when you're running gasoline. The engines weren't designed with gasoline in mind, and we've never run them that way.
As far as using modern fuels with little or no castor oil, just make sure you're running the engine on the rich side. The castor is best when you have low oil content or are running hotter than usual. We'd most certainly add some castor to fuels that have none. If you have problems getting castor oil, you can most certainly use medicinal castor oil from the drugstore, or purchase Klotz BeNol through hobby outlets or racing shops:
http://www3.towerhobbies.com/cgi-bin...&I=LXS627&P=ML
As far as using modern fuels with little or no castor oil, just make sure you're running the engine on the rich side. The castor is best when you have low oil content or are running hotter than usual. We'd most certainly add some castor to fuels that have none. If you have problems getting castor oil, you can most certainly use medicinal castor oil from the drugstore, or purchase Klotz BeNol through hobby outlets or racing shops:
http://www3.towerhobbies.com/cgi-bin...&I=LXS627&P=ML
#94
Thanks Bax, great info as always.
I have a soft spot for SuperTigre engines and think the quality is better than the modest price suggests, but they are getting harder to find these days.
I have converted a G2300 and a G90 to gasoline and both work well, testament to their quality and flexibility.
I have a soft spot for SuperTigre engines and think the quality is better than the modest price suggests, but they are getting harder to find these days.
I have converted a G2300 and a G90 to gasoline and both work well, testament to their quality and flexibility.
#95
Join Date: Oct 2009
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I picked up a 3000 ST and am not sure what mix of fuel to use. I have tried a 15 / 18 and it runs good on the ground. Get in the air and after running full throttle for a short time it dies. Then a recovery mode is nessary. Is it the prop size? Is it the fuel? Is it the file tubing? Is there a connector and clunk bigger to make it run good. Don't know which way to go. If special fuel is needed where do I get it. Now that is a lot of questions isn't it.
#96
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MC, here is a test of said engine by Peter Chinn. No rpm numbers listed, he does mention the prop sizes.
http://sceptreflight.com/Model%20Eng...T%20S3000.html
http://sceptreflight.com/Model%20Eng...T%20S3000.html
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leonardor (09-12-2020)
#99
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Thanks Bax, great info as always.
I have a soft spot for SuperTigre engines and think the quality is better than the modest price suggests, but they are getting harder to find these days.
I have converted a G2300 and a G90 to gasoline and both work well, testament to their quality and flexibility.
I have a soft spot for SuperTigre engines and think the quality is better than the modest price suggests, but they are getting harder to find these days.
I have converted a G2300 and a G90 to gasoline and both work well, testament to their quality and flexibility.
Many Thanks!!
Corky
#100
Junior Member
[QUOTE=Ed_Moorman;504762]The carb for the ASP .91 should be the same one as for the 1.08. For either of these carbs and for the OS, you need the split sleeve the early STs came with to reduce the hole in the crankcase to the size of the carb neck. Great Planes used to carry them. In a pinch you could use aluminum tape.
anyone happen to have a picture of one of these split sleeves? I just bought one of these s3000s and the carb measures 15mm but the hole in the case is 17mm. Needless to say the just flops out of the hole. I can’t find any info on this missing part anywhere. Can’t find a parts diagram or a part number. Please help.
anyone happen to have a picture of one of these split sleeves? I just bought one of these s3000s and the carb measures 15mm but the hole in the case is 17mm. Needless to say the just flops out of the hole. I can’t find any info on this missing part anywhere. Can’t find a parts diagram or a part number. Please help.