OS FT 300 Super Gemini First Run
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- เผยแพร่เมื่อ 10 ก.ย. 2024
- 20x8 Master Airscrew, OS F plugs, Omega 5%
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For those that didn't see all of the comments or watch the entire first video, I did not disassemble this engine to verify the type of connecting rods in it. There is just too much evidence that this engine does not have the original aluminum alloy rods that were prone to failure. One such piece of evidence is this review article from 1987 when it clearly states that the engine has dropped forged bronze connecting rods. sceptreflight.com/Model%20Engine%20Tests/OS%20Gemini%20FT-300.html
The complete and utter lack of any internet posts, forum threads, etc. discussing connecting rod failures on this engine is just another piece of evidence. The ONE video by Brian Winch that alerted people to this is, in my opinion, actually referring to perhaps the early versions of the FT-240. The FT-240 came out before the 300 and OS would clearly have remedied any such issues by the time the 300 was in mass production. With that said, the owner of this engine has authorized me to just do break in runs on it and NOT disassemble it.
David, the temp difference could be due to the airflow from prop wash due to the direction of prop rotation and where you take the temp. measurements. The air off the prop comes downward at an angle on top of the right cylinder and upward at an angle onto the bottom of the left cylinder. The heads and cylinders can run cooler on their upstream sides and hotter on the downstream side.
Damn, love that engine!!
Nice that you did not have to tear this down after all.It sure was sounding sweet towards the end,now I am interested in seeing on your final tank of fuel,the difference in temps on the cylinders!
Nice video...I have a new one..assembled on Skylink 50..3years ago..still not break in nor fly it....I make a copy of your video...thanks
Excellent
Interesting to see one cylinder runs hotter than the other
That is a sweet unit! Bet she pulls real strong too.
Totally awesome engine they must cost an arm and a leg
There is a NIB one on Ebay right now at a buy it now price of $1,250. For comparison, the current production FT-160 Gemini is $1199.00 from Tower Hobbies.
Hello, for the temperatures it is in Celsius? If so, it is not normal to reach 150 degrees. It's way too much. There is a problem somewhere. On my Ft300 and FF300, the cylinders never exceed 110°. Where is the problem?
I’m in the US, I don’t use the metric system for temperature sir.
@@dmrcflyr2 Ah OK. It's better that way. For information, on my multi-cylinders, they are equipped with thermal probes. Alarms go off at 107 degrees Celsius. And that never happens. Good luck to you.
@@jeromedzk Well I also have an inherent trust of OS and their engineering having owned MANY of their engines. I have never had one be in an overheating situation at all. especially if you know how to properly tune them.
Don't know if you may agree, but that cylinder closer to the camera "was looking like if it was moving! perhaps checking those crank case bolts to the Cylinder would be a wise idea!!
No I don't agree. People can really see some imaginary stuff in these videos. Do you honestly think that OS would ship an engine with loose hardware?
Absolutely glorious in every respect David. The exhaust note is divine. Would you able to verify the type of conrods inside this engine?
Not without disassembly.
Hi DiD You Flick the prop Clockwise ...
Hello, does anyone know where I can get a cheap rc engine for a 1/10 scale car?
Visit a local hobby shop. They can help you.
Great idle with no glow especially for a break in run.
Are you making videos of the gen 1 ft 120?
I have 2 videos made already, I just have not made them public yet.
Sweet! I just picked up a gen 1 for cheap with very low run time.
With these temperatures in Celsius, you will damage your engine. Its lifespan will be short. Probably a problem with your fuel. Mine NEVER exceeds 115°c at most. And it has more than 300 flights. Even on the 4-cylinder FF320, the 2 rear cylinders never reach these temperatures... Seen video with Piper et four cylinders...th-cam.com/video/Pcdl8rKE94Y/w-d-xo.html
Me want :-)
OS stands for Others Suck YS stands for Yours Sucks LOL