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Old 08-15-2010, 01:22 PM   #1
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Default Check my EPA's please!!! Eating servos...

I almost, almost want to give up. I took my time last night trying to make sure my throttle servo was adjusted perfectly. Everything looked good so, I went out this morning to re-tune the truck ,changing fuel %. Not even a half tank in the servo quits working. It won't do anything, not even make a sound.
Now, I know this is a cheap traxxas servo, but it should last longer then 3mins.
So, I took pics of how I set everything up and want to know what all you guys think. Please give any useful advice you can, thanks!

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Old 08-15-2010, 01:35 PM   #2
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Buy a real servo or this will continue to happen. Especially with that big return spring on there. Throttle servos are under a lot more strain than people think and you have to have a good one or they go poof.
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Old 08-15-2010, 01:39 PM   #3
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Your are gonna have to get a real servo.
Those pictures are nice but do not really show what is happening when you hit the brakes. You could try it without the return spring.
Try a rubber band. You just want the carb to close with the linkage unhooked.

you better re-route that wire that is hitting the driveshaft. Temp sensor???
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Old 08-15-2010, 01:40 PM   #4
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+1
Get a good servo.
Braking puts a lot of stress on the servo aswell so you want good end point settings there also.
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Old 08-15-2010, 02:01 PM   #5
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its because a traxxas servo wont last in any 1/8 plus a losi is a servo eater in the first place you have to buy hi tec because its the only servo that losi seems to not eat as much. You cnat put cheap servos in a truggy or buggy they wont last at all ur lucky to get 1/2 a tank out of a plastic servo.
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Old 08-15-2010, 02:07 PM   #6
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Need a stronger servo mate. Everything else looks fine. Just make the linkage less angled on your next servo also and you'll be fine.
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Old 08-15-2010, 02:28 PM   #7
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Quote:
Originally Posted by Charles Godwin View Post
Need a stronger servo mate. Everything else looks fine. Just make the linkage less angled on your next servo also and you'll be fine.
Thanks a lot! Thanks to everyone.
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Old 08-15-2010, 02:45 PM   #8
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Quote:
Originally Posted by Sein View Post
I almost, almost want to give up. I took my time last night trying to make sure my throttle servo was adjusted perfectly. Everything looked good so, I went out this morning to re-tune the truck ,changing fuel %. Not even a half tank in the servo quits working. It won't do anything, not even make a sound.
Now, I know this is a cheap traxxas servo, but it should last longer then 3mins.
So, I took pics of how I set everything up and want to know what all you guys think. Please give any useful advice you can, thanks!
Throttle return spring is too large. Try one of these.

http://www.amainhobbies.com/product_...-Return-Spring

http://www.amainhobbies.com/product_...e-Return-Bands

Your traxxas servo may have survived if it didn't have to pull that spring tension. But a better servo would be the way to go in the future. For some EPA insurance, you could put a small piece of fuel line between the collar and the throttle arm.
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Old 08-15-2010, 02:53 PM   #9
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Quote:
Originally Posted by nitroexpress View Post
Throttle return spring is too large. Try one of these.

http://www.amainhobbies.com/product_...-Return-Spring

http://www.amainhobbies.com/product_...e-Return-Bands

Your traxxas servo may have survived if it didn't have to pull that spring tension. But a better servo would be the way to go in the future. For some EPA insurance, you could put a small piece of fuel line between the collar and the throttle arm.
Not all are going to agree but Ive beem running a JR 9100t for almost a year in both club and series races and it still works fine. They are a little pricey but dependable.
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Old 08-15-2010, 05:53 PM   #10
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messed up.
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Old 08-15-2010, 06:07 PM   #11
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Are you seriously using a traxxas servo for the throttle? Wow that's pretty good. Put in a hitec and use gmk return bands. Ditch the return spring. BTW sorry for the dig on the servo I just couldn't resist.
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Old 08-15-2010, 06:21 PM   #12
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Put in a digital torque servo. The speed digital servo's tend to burn up quick too.
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Old 08-15-2010, 06:36 PM   #13
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Quote:
Originally Posted by Charles Godwin View Post
Need a stronger servo mate. Everything else looks fine. Just make the linkage less angled on your next servo also and you'll be fine.


thats about were you, have to have the carb angle so it doest rub the center diff mount. he can move it to the left a little, more but the carb boot might rub the mount.

but the carb ball looks, like its good and pulling the linkage straight.
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Old 08-15-2010, 07:10 PM   #14
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Im not sure your EPA's are the problems!! A better brand servo should do you some justice. Go with one of the bigger companies I dont want to say one brand over another, but I'm sure with a little research you should be able to find a good set of servos that are easy on the wallet.
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Old 08-15-2010, 07:17 PM   #15
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i would remmend something like a futaba 9452 servo for the throttle its diginal and its coreless its around $90 . i use a 9451 for my throttle and never have i burned it up, and if your trying to correct your landing a diginal servo really helps so you can land right. and its faster than a analog servo
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