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Super tigre 2300 prop question

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Super tigre 2300 prop question

Old 08-21-2008, 10:44 PM
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DoubleDD
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Default Super tigre 2300 prop question

Purchased a 2300 to put in my Funtana 90 and the engine manual suggests using either a 18x8 or 18x10 2 blade prop and say up to 12500 rpm but I don't buy it. I'm thinking if it gets 9500rpm would be more realistic. If anyone reading this has one of these engines I would like to hear from you because I would like to put on a 3 blade prop and was thinking of maybe a 16x8 3 blade. Tell me what you experts think. I need the smaller diameter for ground clearance.
Old 08-22-2008, 07:48 AM
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Red B.
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Default RE: Super tigre 2300 prop question

With the standard silencer the ST-2300 has it peak power output a little bit above 9000 RPM, if propped to run much above 9500 RPM there is a marked loss of torque and power. Of course, using another silencer or pipe will provide different results.

With 5% nitro fuel and a Menz 18x8 expect somewhere between 7000-7500 RPM. IMHO a 18x10 is to much prop for the ST-2300. Depending on the application a 17x8 two-blade or equivalent three-blade propeller seems about right. I would expect a 16x8 three-blade propeller to perform about the same as the 18X8 two-blade, but a slightly smaller diameter, say 15-15.5 in, would IMHO be better.
Old 08-27-2008, 09:14 PM
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B.Day
 
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Default RE: Super tigre 2300 prop question

Double DD: I have two ST 2300's. I have one on a Ultra Sport 1000, and another on a 140 size Katana. Both planes I run 16x8 APC's and both preform very well. I have never tried an 18' prop because the 16x8's do so well, therefore I have not seen the need for anything else. However I am a three blade freak. The Airscrew 16x8 three blade is really a little too much for it so I shave off about 1/16th off the trailing edge and this seems to work very well, but for overall speed the APC 16x8 cannot be beat...also if your motor is an Italian made motor you will want to get the new carb. barrel to make it run properly, without it going dead all the time. I have found they don't like 5% fuel and 15% is sort of a waste so 10% make them happy..Fix the Carb. with a new barrel and they really are a great motor for the price.............................B.Day
Old 08-28-2008, 12:22 AM
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ErikElvis
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Default RE: Super tigre 2300 prop question

I bought a used sukhoi from a guy at our field with a 2300. He was running a 18x10 and said it was a dog. I went for a 16x10 apc but have yet to get the plane up into the air. The initial run-ups seemed good. But I guess I wont know until I get it up in the air.
Old 08-28-2008, 12:28 PM
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Red B.
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Default RE: Super tigre 2300 prop question

ORIGINAL: ErikElvis

I bought a used sukhoi from a guy at our field with a 2300. He was running a 18x10 and said it was a dog. I went for a 16x10 apc but have yet to get the plane up into the air. The initial run-ups seemed good. But I guess I wont know until I get it up in the air.
Obviously the guy you bought the Sukhoi from knew little about ST engines. An 18x10 is more suitable for a ST3000 or 3250 than a 2300.
If you are using the standard silencer I would suggest you prop the 2300 to run approx. 8000 - 8500 rpm static.
Old 08-28-2008, 03:20 PM
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RevGQ
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Default RE: Super tigre 2300 prop question

Ditto on the 16x_ prop for the 2300. I own several and have ran them on a P40 Warhawk and Gee Bee R2 with tremendous output. I did experiment with the 18x_ props, but the output was not impressive and the engine tends to bog.
Old 09-04-2008, 09:52 PM
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DoubleDD
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Default RE: Super tigre 2300 prop question

As of yet I still have not run the 2300 but am anxious. Big thanks to the replies so far. The motor came with the standard muffler but I am going to put on the Bisson Pitts muffler, hoping for better responsiveness. I am not sure of the carb stated earlier in post so enlighten ,me please. As far as run in and tuning what would you suggest or just go by the manual?
Old 09-04-2008, 09:54 PM
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DoubleDD
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Default RE: Super tigre 2300 prop question

What kind of rpm's do you get with these ?
Old 09-05-2008, 03:32 AM
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RevGQ
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Default RE: Super tigre 2300 prop question

I also run the Bisson's, but I plug one outlet for increased back pressure for better performance.
Old 09-05-2008, 04:31 PM
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Gray Beard
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Default RE: Super tigre 2300 prop question

I just aquired A nice new 2300 in A trade deal, it's in A 90 inch Decathlon. Today I went out and maidened the beast. I have the APC 16X8 on it right now and it was going well over the 9700 range and climbing but I fattened it up so it was only hitting 9300 on the ground. I was shooting for around the 900 range. The plane is 15 pounds on the nose and the engine/prop combo pulled it around quite well, big loops and nice rolls. I felt that the plane was going faster then I like so next time out I will have A good selection of props with me, both APC and wood Xoars. I'm thinking that A 17X6 or 17X4 may pull the plane the way I want it to.
Remember that the correct prop is the one the pilot likes, not the RPM it can get. A longer prop with A smaller pitch will get you A slower plane with more torque so that's what I'm looking for. After fooling around with this engine today the 16X8 three blade may be just about what you are looking for?? The quest for that perfect prop is always fun!!

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