S2 Pro .21 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 06-30-2005, 12:54 PM   #1
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S2 Pro .21

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I seem to be having some trouble with me pro .21 in my S2 getting low end torque out of it. It is soggy in the bottom end, and my in-experience with carb tuning has left me dry. any suggestions? does the low speed adjust bottom end torque at all?
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Old 06-30-2005, 01:50 PM   #2
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Post tunning

sounds like it just to rich,try leaning it out a little about a 1/16th of a turn at a time on the high speed needle(watch for smoke and check the engine temp)
that should work.maybe start at factory settings
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Old 06-30-2005, 02:07 PM   #3
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Soggy bottom end

#1: Howz the air filter. Running off road we have to replace our air filters evry tank of fuel Very dusty conditions can be worse than mud. We had 2 blown engines at the track this week due to dirt..

#2: This humid weather can cause havoc with needle settings. Always start at a base needle setting then lean the high end first for overall performance and good temp. Tune the low end last for good punch but not to the point that the temp climbs while monitoring with a temp guage at an idle.

#3: Glow plug. Have you tried a new plug as the other may be having problems burning fuel.

#4: Get used to blipping the throttle while your pit man has the car staged on the start line to keep the rpm's up and prevent flameout for that first turn pileup.

#5 If you are just hacking around, leave the needles on the rich side of the spectrum to save engine life. While most engines are tuned from 230-280 deg. there is no reason you can't leave the engine at 200 deg if you are happy with the performance. (very tough to do tho in this weather)

Hope that helps
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Old 06-30-2005, 03:07 PM   #4
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Not sure if it was Henry that replied or not, but i hope you saw my post in off road about how much i love my S2 thanks for the help man, calling long distance to the Zoom Room from my cell at the track get expensive.
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