can someone give me a little insite on tuning 4 strokes?
05-21-2003, 07:27 PM
#1
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can someone give me a little insite on tuning 4 strokes?
im new to 4 strokes, 2 strokes i have a decent amount of experance with, i hae a satio 1.80 in a quarter scale extra, id like to get this thing purring like a kitten,
this is defintly a different animal than a 2 stroke.
this is defintly a different animal than a 2 stroke.
05-21-2003, 07:29 PM
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can someone give me a little insite on tuning 4 strokes?
Tell us how you broke it in.
Have you tweaked the idle mixture?
Are you running it on a stand to get it tuned up?
Lots of prior discussion on this topic. Have you checked the old threads?
Have you tweaked the idle mixture?
Are you running it on a stand to get it tuned up?
Lots of prior discussion on this topic. Have you checked the old threads?
05-21-2003, 07:58 PM
#3
Thread Starter
can someone give me a little insite on tuning 4 strokes?
i didnt break in the motor, another guy did, and id trust that the person who i bought it off of would have broken it in right, it runs beautifuly, just a little out of tune.
i havent tweaked the idle mixture.
the engine is bolted into the plane and id like to keep it there.
and on checking old threads, i try looking up tuning of 4 strokes and i realy cant find what im looking for. i know its been asked alot, i just cant come across any old threads.
i havent tweaked the idle mixture.
the engine is bolted into the plane and id like to keep it there.
and on checking old threads, i try looking up tuning of 4 strokes and i realy cant find what im looking for. i know its been asked alot, i just cant come across any old threads.
05-21-2003, 08:24 PM
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can someone give me a little insite on tuning 4 strokes?
Originally posted by Lorduss
i didnt break in the motor, another guy did, and id trust that the person who i bought it off of would have broken it in right, it runs beautifuly, just a little out of tune.
i havent tweaked the idle mixture.
the engine is bolted into the plane and id like to keep it there.
and on checking old threads, i try looking up tuning of 4 strokes and i realy cant find what im looking for. i know its been asked alot, i just cant come across any old threads. [/B]
i didnt break in the motor, another guy did, and id trust that the person who i bought it off of would have broken it in right, it runs beautifuly, just a little out of tune.
i havent tweaked the idle mixture.
the engine is bolted into the plane and id like to keep it there.
and on checking old threads, i try looking up tuning of 4 strokes and i realy cant find what im looking for. i know its been asked alot, i just cant come across any old threads. [/B]
One big difference between 2-strokes and 4-strokes is the difficulty in hearing the engine peak while adjusting the high-speed needle. Unless you're especially gifted, the general recommendation is to use a tach to tune the high-speed needle. Otherwise you risk leaning too much and kicking off a prop. The 180 is known to do that - so be careful.
Tuning the low-speed mixture is another challenge with a few procedures. If your low-speed is too rich, you'll have trouble holding an idle for too long - or the engine will stall and die if you idle it for a little then slam the throttle open. Here's a couple ways compliments of Wayne which should also apply:
http://www.rcuniverse.com/showthread...25&forumid=145
Here's a caution about getting the low-speed to lean:
http://www.rcuniverse.com/showthread...89&forumid=145
More goodies on the 180:
http://www.rcuniverse.com/showthread...51&forumid=145
And some more good info:
http://www.rcuniverse.com/showthread...79&forumid=145
Hope this helps some.
I don't know that tuning the carb is any different between 2-strokes and 4-strokes. Maybe I'm missing something..
