3pks servo activity
#1
3pks servo activity
just curious if im tripping or if somone else has had a similar issue. I have a 2PL-2.4G i have been using since i started racing. just upgraded to a 3PKS FASST with a ton more features.
for whatever reason though it seems like the throttle servo activity was smoother with the 2PL than with the 3PK on my nitro car. the throttle servo wont return fully to neutral unless you blip the brakes and the carb slide seems to open kinda jerky. i unhooked the linkage and the carb slides smooth.. just not sure why the different radio gives a different result.
i reset the model settings to default. using a 603FF rx in the car and JR Z270 throttle servo.
the only other thing i can think of is the previous owner cut the antenna short. but ive rear that this isnt a big deal for 2.4GHZ systems.
edit; throttle doesnt seem to open completely if i slowly squeeze the trigger. i have to squeeze it quickly to fully open.
for whatever reason though it seems like the throttle servo activity was smoother with the 2PL than with the 3PK on my nitro car. the throttle servo wont return fully to neutral unless you blip the brakes and the carb slide seems to open kinda jerky. i unhooked the linkage and the carb slides smooth.. just not sure why the different radio gives a different result.
i reset the model settings to default. using a 603FF rx in the car and JR Z270 throttle servo.
the only other thing i can think of is the previous owner cut the antenna short. but ive rear that this isnt a big deal for 2.4GHZ systems.
edit; throttle doesnt seem to open completely if i slowly squeeze the trigger. i have to squeeze it quickly to fully open.
#2
Super Moderator
iTrader: (63)
Join Date: May 2005
Location: a very small town in wisconsin that is in the middle of absolutely no where
Posts: 5,155
Trader Rating: 63 (100%+)
i dont know if this is your issue but i had a 3pk that when i pulled the throttle 1/16-1/8 finger pull the throttle would go 3/4 open on the motor.. then when i got to 1/2 throttle the carb would go the rest of the way.. what i found on mine was a bad throttle potentiometer.. replace the trigger assembly and all worked well.. sold this radio locally to a guy and has used it for several years now with no issues...
also if you remove the carb linkage does the throttle act the same?? some times a cab sticking will cause this issue.. also a weak servo will cause this if your carb is sticking... jeremy
also if you remove the carb linkage does the throttle act the same?? some times a cab sticking will cause this issue.. also a weak servo will cause this if your carb is sticking... jeremy
#3
its possible the pot is bad i suppose though my tc5 drives just fine with the radio. excellent throttle response. i imagine the servos in this car are pretty low end. though it seems to have enough balls to lock the brakes pretty good. ill have to muck around with the travel. have my throttle epa set to like 25 and 90 for the brake, maybe thats not enough travel for the throttle even though the car is full open.
#4
Super Moderator
iTrader: (63)
Join Date: May 2005
Location: a very small town in wisconsin that is in the middle of absolutely no where
Posts: 5,155
Trader Rating: 63 (100%+)
its possible the pot is bad i suppose though my tc5 drives just fine with the radio. excellent throttle response. i imagine the servos in this car are pretty low end. though it seems to have enough balls to lock the brakes pretty good. ill have to muck around with the travel. have my throttle epa set to like 25 and 90 for the brake, maybe thats not enough travel for the throttle even though the car is full open.
#5
to clearify; you mean dont touch the throttle trigger but use the +/- to move the epa?
doing that the servo doesn't move. it only moves if i engage the trigger and adjust it.
though i have to set the brake epa to almost 80 to get it to move any on trigger action.
doing that the servo doesn't move. it only moves if i engage the trigger and adjust it.
though i have to set the brake epa to almost 80 to get it to move any on trigger action.
#6
Super Moderator
iTrader: (63)
Join Date: May 2005
Location: a very small town in wisconsin that is in the middle of absolutely no where
Posts: 5,155
Trader Rating: 63 (100%+)
correct... did you take the carb linkege off and try moving the throttle? does it move free and smooth?
#7
yes i tried that. carb moves smooth though i havent run the engine today so it might have gummed up a little by sitting.
i plugged my 2pl system back in and it doesnt seem any better. so maybe its just a fubared servo. ill take the steering servo out of my touring car and see how it works.
I have a spare hitec servo i plugged in but it was really jittery and noisy for some reason. didnt try it with the 2pl though.
i plugged my 2pl system back in and it doesnt seem any better. so maybe its just a fubared servo. ill take the steering servo out of my touring car and see how it works.
I have a spare hitec servo i plugged in but it was really jittery and noisy for some reason. didnt try it with the 2pl though.
#9
Super Moderator
iTrader: (63)
Join Date: May 2005
Location: a very small town in wisconsin that is in the middle of absolutely no where
Posts: 5,155
Trader Rating: 63 (100%+)
glad you figured it out.. electrical gremlins are the worst.. jeremy