Here is one I cant figure out.

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, and others.
C

chefjness

Well-Known Member
Messages
69
Reaction score
0
Fully charged battery.


New throttle servo by Hitec with about 20 minutes on it.


Turn the power on...fail safe is green


Power to steering servo but not to throttle servo.


Remove fail safe and I get power to both but the throttle servo seems "slow".


Any ideas,


John
 
are you using the stock failsafe? they are constant problems. not sure why it would be slow. check your radio settings. but the problem i think would be the failsafe. some have had crazy glitching too. are you running a pico or kill switch as well? there are few good reasons to have a failsafe like that too. unless your running a short range radio then you don't really need that type of failsafe
 
switch the servo leads going into the receiver (switch the th and st) and see if now the steering servo is slow.
 
is the stearing servo slow too? what radio are you using. if you can adjust the speed of the servo from the radio check the settings and make sure they are good. what charger are you using to charge your reciver pack. a peak charger or the supllied wall charger
 
no..steering is fine.


switched them chuck and steering reaction time is fine


even switching them and using the trigger for steering that servo seems slow.


This is a trip
 
how slow is slow? i meen it could appear to look slow if their is no servo horn on it. i cant really see were the problem would or could be. if you have a servo horn on it, make sure the bottom of the servo horn is not rubbing on the case. you said its a new hitech? its weird. it should be just fine unless the servo is bad..
 
If it is a new digital hitec servo they have a default setting but I have heard of the settings getting messed up when using them in conjuction with a failsafe, the new digitals from hitec have a faisafe individually in each servo and the failsafe could have messed that up. Take to your LHS with plane stuff see if they have a hitec programmer HFP-20 that thing even tests the servo too.
 
lets say the servo is fine....with the failsafe connected I get zero throttle response. When I dissconnect the failsafe the throttle servo gets power. I guess I need to buy another failsafe.
 
If they are digital servos from hitec you don't need a failsafe they have them built in. give us some info here if you need the help. what model Hitec you having problem with .
 
Well its not digital...so a new fail safe is in order.


Here is something of interest. I found six reviews of that servo and everyone complains that it is slow. I guess compared to by bajab and T I really noticed it and how much slower it is that the others.
 
the 645 isnt a bad servo. its kinda slow but ok and inexpensive. i have a few of them, but not in use. you wont notice the slow reaction with the throttle and will have a good amout of torque for brakes. just run it and see how you like it. i don't run a failsafe. check into a pb kill switch. as you know, the only time a failsafe works is when you lose range(wich is hard to do these days) or lose battery volts. wich is easly detected. a pb kill switch shuts down the mill at 4v. most of the problems with runaways is throttle servo failure like water damage, linkage binding from sand or mud, snow.. or bad epa's and w/ long wot runs. when any problem happens you can simply shut down the motor from the radio. they only cost $40 and python should have them in soon.. i really think failsafes are a false sence of security.. just a thought, thats all
 
You realy shouldn't use 6 _ _ series Hitec servos on fifth scale gas. I only run Hitec so I like them but the 6 _ _ series servos are their low line servos and don't have enough resolution in the motor they are three pole motor and the 9 _ _ series servos have 6 pole motors the low line don't take the vibration that fifth scale puts out, that is why they always go out on them. I know I Know I will have 4627 people disagree and say they run them all the time, but if that is all you care about your $900 investment then so be it.
 
Sprint 77 said:
You realy shouldn't use 6 _ _ series Hitec servos on fifth scale gas. I only run Hitec so I like them but the 6 _ _ series servos are their low line servos and don't have enough resolution in the motor they are three pole motor and the 9 _ _ series servos have 6 pole motors the low line don't take the vibration that fifth scale puts out, that is why they always go out on them. I know I Know I will have 4627 people disagree and say they run them all the time, but if that is all you care about your $900 investment then so be it.
Click to expand...
I care about my investment. I actually looked on this forum alot before I got that servo. That servo was recommended alot and yes the price was good. Maybe I should have gotten something else.
 
With the Rampage breaking new ground of a inexpensive 4x4 1/5 scale some of the new members may have good opinoins of them on 1/10 scale cars they own but I have ran 1/4 and fifth scales for years and I am saying it can go out more than likely at the wrong time. Buy as much servo as you can afford the metal gear HS-7985 MG works great for throttle they are more @ $89 but you'll thank me for it after you run it. Plus later on you put a HS5745 MG 1/4 scale giant on the steering you got both dgital and most radios nowdays have a high response mode and WOW what a difference, then put a lipo and a regulator and WOW again. As good as $$ spent on the motor in response time. A piece at a time I know just make a plan and 1 thing at a time.
 
there is nothing wrong with running the 645. plain and simple. we as in MANY of us have been using them for a long time. are they the best? no.. but so what. there is simply nothing wrong with running less then the best.. :D
 
Sprint 77 said:
With the Rampage breaking new ground of a inexpensive 4x4 1/5 scale some of the new members may have good opinoins of them on 1/10 scale cars they own but I have ran 1/4 and fifth scales for years and I am saying it can go out more than likely at the wrong time. Buy as much servo as you can afford the metal gear HS-7985 MG works great for throttle they are more @ $89 but you'll thank me for it after you run it. Plus later on you put a HS5745 MG 1/4 scale giant on the steering you got both dgital and most radios nowdays have a high response mode and WOW what a difference, then put a lipo and a regulator and WOW again. As good as $$ spent on the motor in response time. A piece at a time I know just make a plan and 1 thing at a time.
Click to expand...
i have 2 of them. nothing great.. good, but. but i cant seem to find were the extra $60 went..sorry. just my opinion
 
Sprint 77 said:
With the Rampage breaking new ground of a inexpensive 4x4 1/5 scale some of the new members may have good opinoins of them on 1/10 scale cars they own but I have ran 1/4 and fifth scales for years and I am saying it can go out more than likely at the wrong time. Buy as much servo as you can afford the metal gear HS-7985 MG works great for throttle they are more @ $89 but you'll thank me for it after you run it. Plus later on you put a HS5745 MG 1/4 scale giant on the steering you got both dgital and most radios nowdays have a high response mode and WOW what a difference, then put a lipo and a regulator and WOW again. As good as $$ spent on the motor in response time. A piece at a time I know just make a plan and 1 thing at a time.
Click to expand...
How do you set the fail safe point onthose servos?
 
Back
Top