Losi 8ight building and setup
11-01-2006, 10:32 AM
#573
Tech Master
iTrader: (42)
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?
11-01-2006, 02:11 PM
#574
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.
11-01-2006, 03:02 PM
#576
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.
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.
11-01-2006, 03:03 PM
#577
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...
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...
11-02-2006, 04:37 AM
#581
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.
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.
11-02-2006, 04:53 AM
#582
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,
TEX
<------ Not done yet.
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,
TEX
<------ Not done yet.
11-02-2006, 06:17 AM
#585
