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Old 11-01-2006, 09:20 AM   #571
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Homer has the best prices on 8ights.

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Old 11-01-2006, 10:26 AM   #572
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Sorry if this has already been addressed, but is it true that the chassis flex is the cause of everybody stripping throttle servos?
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Old 11-01-2006, 10:32 AM   #573
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Quote:
Originally Posted by fastzach
Sorry if this has already been addressed, but is it true that the chassis flex is the cause of everybody stripping throttle servos?
Are you talking about the servo horn insert or the servo itself? Either case, no. There have been a few that blew out the throttle servo but that was due to improper EPA settings and a binding throttle linkage spring.
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Old 11-01-2006, 02:11 PM   #574
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Quote:
Originally Posted by fastzach
Sorry if this has already been addressed, but is it true that the chassis flex is the cause of everybody stripping throttle servos?

I just have to laugh when I read about people killing servos. We have 9 of them running at my local track and NOBODY has killed a servo. Sorry but it has to be build error IMO

the only thing I have seen chassis flex hurting is ovaling out the rear body mount hole and possibly killing my outer 5x10mm clutch bell bearings. I'm seem to be going through them pretty quick.
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Old 11-01-2006, 02:28 PM   #575
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epa is a good couse of servos going by by.
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Old 11-01-2006, 03:02 PM   #576
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Quote:
Originally Posted by rdeppen
I just have to laugh when I read about people killing servos. We have 9 of them running at my local track and NOBODY has killed a servo. Sorry but it has to be build error IMO

the only thing I have seen chassis flex hurting is ovaling out the rear body mount hole and possibly killing my outer 5x10mm clutch bell bearings. I'm seem to be going through them pretty quick.
Just give your CB to spur gear a little more clearance than you would normally run. Had to do this when I ran my Jammin CRT because of extra chassis flex. Was blowing CB bearings left and right, loosened up my "mesh" and never had that problem again
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Old 11-01-2006, 03:03 PM   #577
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I've been through 4 throttle servos, I'm on my 5th right now. My EPA was set up correctly every time.

My clutch bearings have mysteriously held up fine...must be operator error with the failed clutch bearings...

I've heard several theories on the premature throttle servo deaths, the most likely is either heat or vibration. Considering the gears inside are in perfect condition, it's unlikely they were over-stressed. When I pulled the last one out, it was hot, like the motor, wich sits very close to it. When I installed this last one, I added some insulation to the servo to protect it from the heat. At our small, tight, technical track, heat is a major issue, because the cars aren't up at speed so much, and the average temps on those days were in the mid 90s.

On a side note, the throttle servo that survived the longest, was the cheapest standard JR airplane servo. While two Z590s, just fried, the worn out Z650 that I pulled from another car was twitching badly trying to center itself because of internal wear.

If this one kicks the bucket with the insulation, and correct EPA, then it's still a mystery...
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Old 11-01-2006, 03:51 PM   #578
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Make sure your servos are not close to the chassis. Use the spacers if you need to raise them. With the servos being mounted on a plastic radio tray, extra space between the chassis and servo would not be a bad idea.
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Old 11-01-2006, 04:31 PM   #579
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This is true. You need t run the servo spacers to raise them up. If you do not then you are asking for trouble.
Good luck.
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Old 11-01-2006, 06:12 PM   #580
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I used the rubber gromets that come with them, not only to lift them from the chassis, but to try and limit the vibration as well. There are two more 8ights at our track, and AFAIK neither have had clutch or throttle servo issues.
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Old 11-02-2006, 04:37 AM   #581
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Ive also toasted a set of clutch bell bearings, but I guess running the mesh a little looser would help, thanks for the tip.

Ridgeway, have any problems with rear traction? Whats everyone doing to gain some? Anyone put any weight on the chassis right in front of the bulkhead in the rear, or are you adjusting the balance of the car with ride height? Thanks.
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Old 11-02-2006, 04:53 AM   #582
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Brian,
Most of the guys around here are taking some of the steering out to get the rear to follow. The Losi guys have a loamy track that has tons of bite. We run on hard dusty clay.
Minimize the chassis dive when you are on the brakes.
Change the front springs to green.
If you want more rear bite you can change the rear springs to silver.
Use a soft sway bar in the rear.
I'm running 3-5-3 for my diffs.
Hope this helps,
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Old 11-02-2006, 05:14 AM   #583
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if the servo is getting hot maybe there is some binding some where? maybe even on the carb its self, mgiht be worth looking at if you havn't already,
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Old 11-02-2006, 06:09 AM   #584
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Tex, thanks. Ill look into the setup for the laomy track, and give your a try.
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Old 11-02-2006, 06:17 AM   #585
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