Post by Airpressure on Apr 3, 2006 11:59:21 GMT -5
Overheating is a big problem with a lot of nitro engine owners overheating is very bad for any kind of engine especially on nitro engines it causes the piston and sleeve to expand to much and cause it to create more friction the necessary. So here are some tips on how to get your engine to run cool:
1. Probably the most common is a tuning problem such as your running to lean. If your running to lean that means your starving the engine of lubrication witch causes a short engine life. Cure this by richening the engine (spinning needle counter clockwise).
2. This is another common problem of overheating. If you have a air leak it means the engine is getting more air then necessary causing it to run lean. An air leak is most commonly caused by not using the rubber rings when installing carburetor or exhaust header, having a rip in the pipe coupler, lose header bolts, crack in fuel tank, or a blocked pressure line. If you think you have an air leak then you can spray WD-40 on the engine when idleing and you would have the engine stall immediately.
Nitro fuel %
30% nitro fuel:
great performance
great temps.
slightly shorter engine life
20% nitro fuel
good performance
good temps.
good engine life
10% nitro fuel
OK performance
OK temps
good engine life
All of the estimates above are based on how you drive, tuning, weather conditions and what brand of fuel you use.
Engine rebuild, its what all RC drivers hate to hear,
Some indications of an engine needing a rebuild are:
1.Not wanting to start warm.
2.Stalling when your engine is hot (such as in the middle of a run when the engine starts to get hot.
3.Won’t hold a tune (meaning you have to retune just about every time you run)
4. Stalling when your engine is at high RPM and then suddenly changed to a lower RPM.
If those symptoms are what your engine has it is most likely time for a rebuild. How long your engine lasts depends on how it was tuned and how it was used.
FAQ: I just got a new cooling head for my engine and it cools it like a charm so I'm leaning the needles like crazy to get more power! Is this OK?
Answer: No! simply one answer to it and one only. You might be maintaining correct tempature, you are indeed starving the engine of propure lubrication needed (since the little two-stroke engine have lube mixed into there fuel) It will definatly shorten engine life.
Those are all the ones that cam to my mind, feel free to post more FAQ's
1. Probably the most common is a tuning problem such as your running to lean. If your running to lean that means your starving the engine of lubrication witch causes a short engine life. Cure this by richening the engine (spinning needle counter clockwise).
2. This is another common problem of overheating. If you have a air leak it means the engine is getting more air then necessary causing it to run lean. An air leak is most commonly caused by not using the rubber rings when installing carburetor or exhaust header, having a rip in the pipe coupler, lose header bolts, crack in fuel tank, or a blocked pressure line. If you think you have an air leak then you can spray WD-40 on the engine when idleing and you would have the engine stall immediately.
Nitro fuel %
30% nitro fuel:
great performance
great temps.
slightly shorter engine life
20% nitro fuel
good performance
good temps.
good engine life
10% nitro fuel
OK performance
OK temps
good engine life
All of the estimates above are based on how you drive, tuning, weather conditions and what brand of fuel you use.
Engine rebuild, its what all RC drivers hate to hear,
Some indications of an engine needing a rebuild are:
1.Not wanting to start warm.
2.Stalling when your engine is hot (such as in the middle of a run when the engine starts to get hot.
3.Won’t hold a tune (meaning you have to retune just about every time you run)
4. Stalling when your engine is at high RPM and then suddenly changed to a lower RPM.
If those symptoms are what your engine has it is most likely time for a rebuild. How long your engine lasts depends on how it was tuned and how it was used.
FAQ: I just got a new cooling head for my engine and it cools it like a charm so I'm leaning the needles like crazy to get more power! Is this OK?
Answer: No! simply one answer to it and one only. You might be maintaining correct tempature, you are indeed starving the engine of propure lubrication needed (since the little two-stroke engine have lube mixed into there fuel) It will definatly shorten engine life.
Those are all the ones that cam to my mind, feel free to post more FAQ's
