.18 TM tips, etc..
02-09-2005, 05:56 PM
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.18 TM tips, etc..
Im currently running an OS .18 TM on my Revo, it ROCKS! Makes the truck a completley diffrent monster. I do have a few questions though..
Im not a temp freak, I use it for reference only. What is the optimal recommended running temp for this motor. I usually run it at 200-220 degrees. However, when it hits 220, it idles weird as if its not detonating correctly. This goes away if I run a richer bottom end, but then it gets sluggish. Could this be a fuel/plug conflict? I run Odonnell 20% and OS A5 plug right now.
Also, what is the purpose of the 3rd needle (Mid range adjustment) Most say not to touch it, but Im a tinkerer at heart, and it calls my name constantly.. What effects does it make to the engine?
Thanks!
Ken
Im not a temp freak, I use it for reference only. What is the optimal recommended running temp for this motor. I usually run it at 200-220 degrees. However, when it hits 220, it idles weird as if its not detonating correctly. This goes away if I run a richer bottom end, but then it gets sluggish. Could this be a fuel/plug conflict? I run Odonnell 20% and OS A5 plug right now.
Also, what is the purpose of the 3rd needle (Mid range adjustment) Most say not to touch it, but Im a tinkerer at heart, and it calls my name constantly.. What effects does it make to the engine?
Thanks!
Ken
02-09-2005, 10:47 PM
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RE: .18 TM tips, etc..
I also would be interested in learning a bit more as to how one gets the most punch out of this motor. I am confident that the HSN is set properly-temps are around 210-215 degrees (45deg ambient, %70 humidity). Leaning it out will not make it go faster. The idle speed is about as fast as it can be without the clutch engaging. The metering needle is set so that the engine can idle for a minute without flooding or dying.
Now, how do I set the mixture control valve to get that punch like the buggies?
Now, how do I set the mixture control valve to get that punch like the buggies?
02-10-2005, 11:18 AM
#3
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RE: .18 TM tips, etc..
The midrange needle is adjusted so that the midrange is slightly-rich. That way, there's still a bit of richness to help the engine accelerate.
It's not possible for us to give you an actual temperature or temperature range for your engine. The specific temperature is determined by too many factors. There is only one way to determine at what temperature your engine should be run. You have to run it first and then find out what temperature the engine reaches.
Make sure your engine is operating properly with the performance you expect. Use the exact setup every time...fuel, exhaust system, plug, measurement location, and so forth. If you change anything, the temperature will change. Once you have the engine running the way you want it. Take your measurement. This is your starting point. You will have to take measurements over time to find out how the weather affects it. As the air temperature and humidity change from day-to-day, the operating temperature will change. Eventually, you'll find a temperature range that you can work with.
Engine temperature is not an absolute number for setting your engine. It is only a guide, and can help alert you to potential problems. The only sure way to make sure your engine is running correctly is to see how it's running. An engine can be operating at "correct" temperatures, but not running well.
Finally, use any temperatures you read about, or people tell you, as rough information. The only useful numbers are the ones you actually measure when your engine is running correctly. If your engine is running correctly, then what you measure is correct, even if some else says it's too high or too low. Don't worry about the differences. Each engine is in a unique installation with a unique set of circumstances, so there can be wide variances in engine temperature.
It's not possible for us to give you an actual temperature or temperature range for your engine. The specific temperature is determined by too many factors. There is only one way to determine at what temperature your engine should be run. You have to run it first and then find out what temperature the engine reaches.
Make sure your engine is operating properly with the performance you expect. Use the exact setup every time...fuel, exhaust system, plug, measurement location, and so forth. If you change anything, the temperature will change. Once you have the engine running the way you want it. Take your measurement. This is your starting point. You will have to take measurements over time to find out how the weather affects it. As the air temperature and humidity change from day-to-day, the operating temperature will change. Eventually, you'll find a temperature range that you can work with.
Engine temperature is not an absolute number for setting your engine. It is only a guide, and can help alert you to potential problems. The only sure way to make sure your engine is running correctly is to see how it's running. An engine can be operating at "correct" temperatures, but not running well.
Finally, use any temperatures you read about, or people tell you, as rough information. The only useful numbers are the ones you actually measure when your engine is running correctly. If your engine is running correctly, then what you measure is correct, even if some else says it's too high or too low. Don't worry about the differences. Each engine is in a unique installation with a unique set of circumstances, so there can be wide variances in engine temperature.
