JL Racing .12
#542
Tech Addict
JLR tuning
Guys, I'm a newbie to Nitro and have this engine installed in my Jammin CRT .5. I am having trouble tuning it though. When I give it full throttle from a standstill it accellerates up to about half way through the rev range and then bogs. If I stay on the gas, sometimes it will cut out completely. If I let off the gas and then slowly increase the throttle it picks up a few more rpm. Is there a baseline where my needles should be set from the fully closed position? Currently running at sea level, with the LSN at 8 turns out, and the main at 4.25 turns out.
#543
Tech Champion
iTrader: (3)
Guys, I'm a newbie to Nitro and have this engine installed in my Jammin CRT .5. I am having trouble tuning it though. When I give it full throttle from a standstill it accellerates up to about half way through the rev range and then bogs. If I stay on the gas, sometimes it will cut out completely. If I let off the gas and then slowly increase the throttle it picks up a few more rpm. Is there a baseline where my needles should be set from the fully closed position? Currently running at sea level, with the LSN at 8 turns out, and the main at 4.25 turns out.
It sounds lean, judging by the way you explained on how it runs.
#544
True, but for Joe racer... ie... the average Joe... They should try to stay clear of running any .12 motor near or past 300*... The issue is longivity and running at that temp for any length of time... That motor will not last long at all and that's a fact. $180.00-200.00 may not seem like alot to some, but to other's, is still a great sum of money to see there motor washed out because they ran there motors at 300* and being very pissed at there now lost investment. See you later at the shop... I need to pick up a few things for my 720...
RC_Alan
RC_Alan
So it just tells you to not base everything on the "all important" temperature. If anything, just make sure you see lots of smoke coming out of the exhaust and a normal idle, then you are safe from ruining your motor.
I would have figured you know that...
#545
Tech Fanatic
I've run a lot of motors at 290-300 degrees with no problem and they have been my longest lasting motors. On the other hand I've also overheated a few motors running them at 270 deg.
So it just tells you to not base everything on the "all important" temperature. If anything, just make sure you see lots of smoke coming out of the exhaust and a normal idle, then you are safe from ruining your motor.
I would have figured you know that...
So it just tells you to not base everything on the "all important" temperature. If anything, just make sure you see lots of smoke coming out of the exhaust and a normal idle, then you are safe from ruining your motor.
I would have figured you know that...
RC_Alan
#546
#547
Tech Addict
I would like it to run like this...
http://www.youtube.com/watch?v=hQE2Sfa1aVY
Right now its not even within 50% of that.......
Maybe time to go brushless!
#549
JL red dot
Hi team kamikaze,
What for a break in do you prefer for the JL red dot. I have a new piston/sleeve want now what the best methode for this engine is.
Thnx
What for a break in do you prefer for the JL red dot. I have a new piston/sleeve want now what the best methode for this engine is.
Thnx
#550
Tech Champion
iTrader: (3)
1st tank let it Idle, when done then let it cool down with the piston on the bottom
2nd tank 1/2 throttle on a very rich setting
3rd to 6th tank full throttle on a very rich setting
You don't have to turn it off from 2nd tank and up
7th tank run it on the track and start leaning it out 1 hour at a time per tank, until optimum tuning is achieved.
Hope this helps.
www.kamikazercracing.com
#551
Tech Addict
#553
Tech Addict
#555
Tech Addict
Just tried it. 5 turns out was much better. It still bogs, but not nearly as much as before. Probably good enough to take it to the track where I can get some of the locals to help "fine" tune it from here. Thankyou, Samuel!