Hesitation at take off

[Randocommando]

When i pull the throttle on my Revo 3.3 it heaitates for about 2 seconds as it revs up and the goes. Once going it is fine. New to this so not sure if its normal or if I have an issue. Thanks for the help.

 

[Tunedfrog]

Adjust your low speed needle clockwise. Think of the needle as the face of a clock and only make small adjustments one hour at a time.
The low speed needle adjusts low RPM fuel flow so if its hesitating on throttle it most likely is running a bit rich.

 

[tntpoof]

so like 30 degrees.hmmm id go aa little less it might take a few times to get the correct adjustments

 

[Tunedfrog]

Yes I agree, somewhere around 1/16 . My bad...

 

[Randocommando]

Thank you guys. I adjusted the needle and that was it. I see I have to adjust it after every so many runs with it. I guess from it bouncing around and everything.

 

[cbaker65]

Thank you guys. I adjusted the needle and that was it. I see I have to adjust it after every so many runs with it. I guess from it bouncing around and everything.

Is the engine still at factory set?

If so ,you might need to lean in on the HSN a little as well ,but hesitation on take off ,the LSN is the correct needle to turn like the Guy's said!...

 

[olds97_lss]

Nitro is pretty dependent on weather and ambient temp. Some engines are more fussy than others and require a bit of tweaking every time you run it if the weather/ambient is that different from the last.

 

[cbaker65]

Nitro is pretty dependent on weather and ambient temp. Some engines are more fussy than others and require a bit of tweaking every time you run it if the weather/ambient is that different from the last.

LOL...that is one of the reasons why I dont really like to get into engine tuning advice ,among other reasons ,never know what
the other eliments are ,but yea ,that is also a factor an a great tip!...

 

[olds97_lss]

Yep, been running nitro for 20 years... and I'm not great at tuning. Some engines fight me more than others.

 

[Arrmajunk]

It’s been quite some time since I was into nitro but by the sound of it I’m going to say your low speed Needle is too lean bring it out as in (unscrew) a little Nip at a time until hope fully you get a good pull off, equally you can the opposite way and end up too rich on the bottom end then I will be smoky and croaky/spluttery or even stall. Best thing is if your unsure try making the screw flush with the carb body