Motor reving up when brake is applied?

[Rusty Nail]

I noticed after I have been driving for a bit and I apply my full break and release the motor revs up for a second then settles down. I've adjusted the throttle servo a bit but it still does it. I may have not adjusted it correctly or that may not even be the problem. Any suggestions would be appreciated.

 

[RampageHopUps]

Take the air filter off and see what the choke plate is doing then you brake.

 

[Ice_2k]

Motor reving up when brake is applied?I saw this issue before. On your servo arm, the throttle linkage is going through a part that pivots in the arm (see photo). If that part is too tight, it doesn't pivot properly and pulls the linkage when returning from brake to neutral as if you were hitting the throttle. Then the linkage forces it to pivot back and the engine settles down. You should be able to see this easily by playing with the throttle on your tx with the engine off. View attachment 7898





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[talunceford]

I saw this issue before. On your servo arm, the throttle linkage is going through a part that pivots in the arm (see photo). If that part is too tight, it doesn't pivot properly and pulls the linkage when returning from brake to neutral as if you were hitting the throttle. Then the linkage forces it to pivot back and the engine settles down. You should be able to see this easily by playing with the throttle on your tx with the engine off.

View attachment 7898

I concur with Ice. I've had this happen on mine as well. I solved mine by drilling out the plastic just ever so slightly to make the linkage move easier on the throttle rod. Not much, just a small bit.

 

[Rusty Nail]

Thanks guys. I will try these suggestions.