I am using this servo as a throttle servo on my Nitro Pan car. I have been through several of them as well has another racer. They give no warning at all that there is trouble they just quit working.

By the specs they seemed to have been more that adequate to do the job.

When they go, there is not "burnt" smell or anything.

Any help will be appreciated.

We can check them out to see what is failing in them with your application if you want to send them in.

Sure.

Just tell me where to send them and to whom I make the attention to.

Thanks,
Scott

Follow the link HERE for service. All the information is on the service form.

I too have had alot of trouble with these servos this year.

Seven in total burnt out all used as throttle in gas boats.

Worst part is a bunch were sent out for service to the Canadian repair center ( HIFHIGHT ) they lost package 2 months ago and till I called last week they never had it listed in there system They just found it today and since they no longer are an authorized repair center they are sending it to hitec, heck if I new that I would have sent it to them myself.
Now I am out of backup servos as I used on in a new build that only lasted a few min till it also went south.

Now have three boats down that use the same servo and have to send more in for repair.

Worst part is that I am comitted to using that size servo and I have a race coming up in 2 weeks and LHS want $40CDN for a 225mg +tax.

What to do.

Most are probaly out of warriny time frame thow not used till this year as they were backups.

Futaba has a analog servo that is the same size, it does cost more though.

I am assuming that since these are in a boat, you have them rubber mounted. That is what I was told was my problem. I doubt it though, I have lost them after rubber mounting them as well.

One thing I have done is to pay close attention to the amount of charge in my receiver pack.

These servos are rated at 6.0volts. I am running a 5cell pack and it peaks at over 7.0volts. If you are running a higher voltage pack you may want to look into a voltage regulator.

Hope this helps.

battery pack is a 5 cell nim pack 1200-1400 mah

I know the votage limitations on the servos.

All my boats are on 6v.

Yes the servos are rubber mounted as they would be in most instalations.

Same here. All I can tell you is since I have kept a close watch on the battery pack voltage, I have not had any problems.

Might be something to look at.

There are 2 major things that need to be looked at when setting up a throttle servo. You need to make sure that the linkage from the servo to the carb is in an absolute straight line. You do not want any angles from the servo to the carb. The other thing to check is that the endpoints are set. You need to check that the carb is not trying to be opened past the physical limit of the carb. The same goes for when the carb is being held closed. If these things are all set the same, you should have no issues.

Running a flexible cable, so as long as it is free all is good. EPA's were set.

I still believe the voltage was my main issue. Like I said, since watching that, no issues.

linkage is in a straight line endpoints are set to 99% open and no load on close ( gas carb cam leaver set up ) no brakes needed.

Have put new servos in to different boats and have them burn out in two runs.
Thank goodness for third channel kill switch/failsafe.

Hope this year is better for servos....