tt 53 redline

[l33sno]

ive got the tt 53 redline in my 600n, when the engine is up to temp the Carburetor Rotor becomes notchy.
How do you stop this from happening

[Grant_beltcp]

Do you mean the carb barrel goes notchy and sticks every now and then? I think ive sorted mine by using 2 linkages to the carb from the servo. One on each side so you dont get any twisting. It was mentioned in a thread in the 600n section.

[jester4]

Although push-pull will help some with this issue, it's not a permanent fix. The throttle barrel is made of aluminum, and soft at that, so it will wear out regardless. I've had a single link set-up on mine and had not started to stick, after 4-5 gallons, but there was significant wear when I dismantled the carb.

I've also head of the barrel sticking with push-pull as well. I think if you remove the barrel and sand it smooth and use push-pull linkages, the problems may go away for a while, but surely it will return and you will likely need a new barrel, or the "fix" that TT is supposedly coming with...

[Grant_beltcp]

How old is your engine?
I was told that the newer versions have sorted the main problem that was creating the sticky barrel, do you have a link as to any info on the release of this fix? I havnt heard of anything for the newer engine.

[Forced_Induction]

i heard that if you remove the spring on the back of the barrel, it prevents this from happening. mines just started to get notchy, so i think ill give that a try.

[Grant_beltcp]

My replacment one just started going notchy, i tried replacing the spring but its not that thats the problem. if your ball link to the barrel is in the right side (looking from the side of the engine) then it seems to stick after a short amount of use due to the twisting. If you put the ball link on the other side so that the servo is pushing the link rather than pulling it seems to have solved it for me. Even better use the push/pull system (sam as the cyclic servo's) and have 2 links on which i tried and also solved my problem.

[Grant_beltcp]

I removed the spring to see if it made much difference and it still stuck a little bit, but there was a little bit of movement when it was out and i thought that might rattle and so the engine wouldnt run as smooth, but i didnt test fly it like it.

[lionc]

I add a second linkage to be in pull-push. And it's OK, no more problems.