Welcome to RCTalk
Come join other RC enthusiasts! You'll be able to discuss, share and private message with other members of our community.
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, and others.
links, including eBay, Amazon, and others.
AC48
Hardcore RCTalk User
You're probably running too lean, try richening it a bit. (Turn the HSN to the left) Do you have a temp gun? If so, what are the temps is your engine is running at?
I agree with AC48, it sounds like you are running quite lean. Do you know what temps you are running?
AC48
Hardcore RCTalk User
For tuning here is what I suggest. Return the carb to factory settings, then go buy a temp guage. From the factory settings it should be running rich, so you will want to turn the HSN to the right at 1/8 incriments until you get good performance. Use the temp gun to make sure that you aren't going over 280 degrees. Once you have the HSN tuned its time for the LSN. For this you should let idle for 10 seconds (after it reaches full running temps) then give it a lot of throttle. If it goes very slow and bogs, lean the LSN 1/16. If it pauses for a second and then goes very fast, richen the LSN 1/16. Do this test until you get good, crisp acceleration. The last thing to try is the pinch test. Pinch the fuel line, if the RPMs speed up very fast and it dies the LSN is too lean. If it takes a little while for it to speed up and die, its too rich. Again, during all of this make sure you are not going over 280 for temps.
Last edited:
H
hb1111
Guest
you may have a air leak,or maybe some trash in your needles,but it sounds to me like your lean start off as stated above ac48 and if you still got problems come back here and well help!!!
Kodama
RCTalk Talkaholic
- Messages
- 259
- Reaction score
- 0
- RC Driving Style
You might want to take your carb off and inspect it just to make sure it's not plugged or anything, or got a weak seal for that matter. I used to have the same problem, it turns out I tightened the carb nut down too far and it cracked the carb so at high RPM's it would suck air through the crack and seem to run lean and very hot.
Later.
Later.
Similar threads
