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Odonnell ss .21 help

Odonnell ss .21 help

Old 06-28-2009, 05:58 PM
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Questions?? Odonnell ss .21 help

I just got one, and broke it in. It's fast and stays running but has trouble coming back down to a steady idle. I've tried all my usual tricks but no success. Anyone got some after break in needle settings for me? Thanks.
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Old 06-28-2009, 06:35 PM
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im having the same issue with mine, i think im still fat on bottom, ill check needles and get back to you

jlo
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Old 06-28-2009, 06:47 PM
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this is where i ran mime today 90 deg. 50% hum. 2 turns out on top about 3/4 turn out on bottom, that sounds funny for the bottom, but thats where i had it and it still seemed a little fat, i need help too.

jlo
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Old 06-28-2009, 06:58 PM
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We had to turn the idle speed screw out about two turns on my engine before we even started to tune on mine. Otherwise it would high idle after running down the straight.
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Old 06-28-2009, 07:22 PM
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Ran mine today at 230 and got 11 mine per tank you just have to lower you idle and fattin up the low speed needle! Take your time tuneing make shure you run a lap after every adjustment! This mill is great you will love it!!
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Old 06-28-2009, 08:53 PM
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How much fuel do u have in It so far JPierson
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Old 06-29-2009, 12:50 AM
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Originally Posted by JPierson View Post
Ran mine today at 230 and got 11 mine per tank you just have to lower you idle and fattin up the low speed needle! Take your time tuneing make shure you run a lap after every adjustment! This mill is great you will love it!!
Did you get 11min with a JP3?
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Old 06-29-2009, 05:06 AM
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3.5 turns out on bottom and top ,get it to temp and then work your way in by throttle and tune especially for bottom end .if it bogs go in 1/8th of a turn each time until its not flat on top and bottom .
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Old 06-29-2009, 07:19 AM
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little over a gal. Through it, O.S.pipe not jp3. Jp3 is for
my GRP.
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Old 06-29-2009, 11:33 AM
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its great to see everyone on here with the new engine.

from what i gather on all the different forums so far (and this is just observation) is that the OS 2050 and The AE2035 pipes have shown to provide the best power/mileage results. also optimum temps looks like it is between 230 - 240 degrees.


like many of you I had to turn the idle down a bunch before tuning. once i did that tunning it was super easy. This motor seems to have a really big "window" so you dont have to be a master tuner by any means to get the most out of this motor
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Old 06-29-2009, 11:38 AM
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If it doesen't settle down even if the LSN is way rich, this is what to do:
Lean bottom and lean Idle, lean them both a lot, but naturally since LSN is way rich, this needs to be leaned quite much.

Shit you not!
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Old 06-29-2009, 12:32 PM
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cobraracing - 3.5 on bottom and top, mine won't even start that fat, i have be told some od guys running 1 turn out on bottom and 2 turns out on top, this motor my be suited for buggy better than truggy.

jlo
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