4LikesViper RC -
03-30-2013 | 05:17 PM
#7351
Guys, before people start getting rude on this vtx8 cutting out I think this needs splitting in 2:
1. What's wrong: The highest probability has to be that its cutting because the BEC can't handle the load.
2. WHY: this is the tricky bit....touch wood my vtx8 doesn't need a glitch buster (though my servo is not a big current puller) and as someone has said some others don't need it, so it could be a weak BEC in that unit. It could be the cells are not up to scratch (what spec/how old are they)? It could be that particular savox is pulling more than normal (any bind in steering)? Or the motor pulling too much.
If it was me, I'd try to rule out anything else and then if still a problem either live with running a glitch buster (is it really a big deal?) or send it back?
1. What's wrong: The highest probability has to be that its cutting because the BEC can't handle the load.
2. WHY: this is the tricky bit....touch wood my vtx8 doesn't need a glitch buster (though my servo is not a big current puller) and as someone has said some others don't need it, so it could be a weak BEC in that unit. It could be the cells are not up to scratch (what spec/how old are they)? It could be that particular savox is pulling more than normal (any bind in steering)? Or the motor pulling too much.
If it was me, I'd try to rule out anything else and then if still a problem either live with running a glitch buster (is it really a big deal?) or send it back?
03-30-2013 | 05:23 PM
#7352
Tech Adept
iTrader: (1)
Joined: Oct 2011
Posts: 205
From: Bend, Oregon
No Binding and I turned my endpoints down to like 80% just to make sure. Because sometimes having it hammering past the full throw has caused it for me in the past on a diffrent system.
I will try another savox servo. I dont think i have any hi-techs to try. ( Have the exact same one in my 2wd with Vtx10r with no issue )
I can't run a glitch buster..well I could but it wont fit in my rx box and its just extra crap I refuse to run on a $200 esc.
I was running SPC 50C 5400mah batteries with under 10 cycles on them if that makes any diffrence.
I will try another savox servo. I dont think i have any hi-techs to try. ( Have the exact same one in my 2wd with Vtx10r with no issue )
I can't run a glitch buster..well I could but it wont fit in my rx box and its just extra crap I refuse to run on a $200 esc.
I was running SPC 50C 5400mah batteries with under 10 cycles on them if that makes any diffrence.
03-30-2013 | 05:26 PM
#7353
Joined: Jan 2003
Posts: 8,616
From: New Jersey
okay, my local hobby shop told me that his rep has 1 in stock, so I went ahead and had him order it. I ran 7.3:1 with the motor at ~40* static, it was in my 22sct, motor came off after about 20 minutes at 165~175.
I am trying out 7.1:1 with the motor at 35*, trying to get a little more top end, and keep the low strong.
my track is a little tight, and the 12.8 may help a bit on the low.
I am trying out 7.1:1 with the motor at 35*, trying to get a little more top end, and keep the low strong.
my track is a little tight, and the 12.8 may help a bit on the low.
What is the temp after 5 min and 10 min? You want to make sure you have two different ratios setup, one for qual and one for mains.
Before you switch, get a baseline temp after 5 min and after 10 min. Do it 3 times each if possible so you can rule out any flukey readings. Once you know that you are at 110 after 5 min and 140 after 10 min (I'm just making up numbers), then you can use that gearing as a road map to your 12.8 gearing.
03-30-2013 | 05:27 PM
#7354
Joined: Jan 2003
Posts: 8,616
From: New Jersey
No Binding and I turned my endpoints down to like 80% just to make sure. Because sometimes having it hammering past the full throw has caused it for me in the past on a diffrent system.
I will try another savox servo. I dont think i have any hi-techs to try. ( Have the exact same one in my 2wd with Vtx10r with no issue )
I can't run a glitch buster..well I could but it wont fit in my rx box and its just extra crap I refuse to run on a $200 esc.
I was running SPC 50C 5400mah batteries with under 10 cycles on them if that makes any diffrence.
I will try another savox servo. I dont think i have any hi-techs to try. ( Have the exact same one in my 2wd with Vtx10r with no issue )
I can't run a glitch buster..well I could but it wont fit in my rx box and its just extra crap I refuse to run on a $200 esc.
I was running SPC 50C 5400mah batteries with under 10 cycles on them if that makes any diffrence.
03-30-2013 | 05:29 PM
#7355
No Binding and I turned my endpoints down to like 80% just to make sure. Because sometimes having it hammering past the full throw has caused it for me in the past on a diffrent system.
I will try another savox servo. I dont think i have any hi-techs to try. ( Have the exact same one in my 2wd with Vtx10r with no issue )
I can't run a glitch buster..well I could but it wont fit in my rx box and its just extra crap I refuse to run on a $200 esc.
I was running SPC 50C 5400mah batteries with under 10 cycles on them if that makes any diffrence.
I will try another savox servo. I dont think i have any hi-techs to try. ( Have the exact same one in my 2wd with Vtx10r with no issue )
I can't run a glitch buster..well I could but it wont fit in my rx box and its just extra crap I refuse to run on a $200 esc.
I was running SPC 50C 5400mah batteries with under 10 cycles on them if that makes any diffrence.
Don't blame you for not wanting to run a glitch buster, I keep one handy in case but my reason for going from a $60 speed passion to a $200 viper was BEC strength as adjustable voltage, I'd be pissed if it didn't have that too!
03-30-2013 | 05:33 PM
#7356
savox
Guys, before people start getting rude on this vtx8 cutting out I think this needs splitting in 2:
1. What's wrong: The highest probability has to be that its cutting because the BEC can't handle the load.
2. WHY: this is the tricky bit....touch wood my vtx8 doesn't need a glitch buster (though my servo is not a big current puller) and as someone has said some others don't need it, so it could be a weak BEC in that unit. It could be the cells are not up to scratch (what spec/how old are they)? It could be that particular savox is pulling more than normal (any bind in steering)? Or the motor pulling too much.
If it was me, I'd try to rule out anything else and then if still a problem either live with running a glitch buster (is it really a big deal?) or send it back?
1. What's wrong: The highest probability has to be that its cutting because the BEC can't handle the load.
2. WHY: this is the tricky bit....touch wood my vtx8 doesn't need a glitch buster (though my servo is not a big current puller) and as someone has said some others don't need it, so it could be a weak BEC in that unit. It could be the cells are not up to scratch (what spec/how old are they)? It could be that particular savox is pulling more than normal (any bind in steering)? Or the motor pulling too much.
If it was me, I'd try to rule out anything else and then if still a problem either live with running a glitch buster (is it really a big deal?) or send it back?
I,v seen many many posts that folks are having problems like this with many systems and the common denominator is the Savox Servo....
Why do so many folks like this servo ???
Been flying 1/3rd scale planes with 8 servos in it doing 3D maneuvers and no amp problems...I would take a long and hard look at Savox!
https://www.google.com/search?q=savo...hrome&ie=UTF-8
Here is a Quote from AMain Hobbys
Savox SC-1230SG Tall Digital Steel Gear Servo
[SAV-SA-1230SG]
Low Price: $74.99
This item earns up to 75
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This is the Savox SA-1230SG Tall Digital "Monster Torque" Steel Gear Servo.
Features:
Combines leading edge technology with super high 12 bit (4096) resolution and unique steel gears.
Super light-weight.
Coreless motor provides extremely high speed, incredible efficiency, and low power consumption.
Extremely strong unique steel gears ensure long-life and durability.
The full aluminum case design not only looks good but also allows for cooler and smoother operating temps.
Servos are environmentally friendly.
Ideal for giant scale aircraft, monster truck, 1/8 scale.
*NOTE: Certain combinations of receiver and ESC have been found to cause "Brown Out" issues when combined with Savox servos. An external BEC, or BEC stabilizing receiver capacitor may be needed for efficient, glitch free operation in low voltage electric applications.
Specifications:
Speed:
@4.8V: .20 sec/60
@6.0V: .16 sec/60
Torque:
@4.8V: 417.0 oz-in
@6.0V: 500 oz-in
Dimensions: 40.3x20.2x45.0mm
Weight: 79.0g
Gear: Unique Steel
Bearing: 2BB
Case: Full Aluminum
Spline: 25 Tooth
03-30-2013 | 05:44 PM
#7357
Tech Adept
iTrader: (1)
Joined: Oct 2011
Posts: 205
From: Bend, Oregon
Im starting to think my servo has some internal binding. I just grabbed my 2wd thats running the same servo and turned the wheels by hand moves pretty easy. Moving the wheels on my 4x4 its a lot harder to turn them by hand. I unhooked the servo and there is no binding.
Hopefully my servo is just having an issue I will swap them and try the other one tomorrow.
Although last week I ran the same sevo with a hobbywing WP8 esc and didn't have a problem.
03-30-2013 | 08:38 PM
#7359
Hi guys, just finished running my vtx10r for the day and found the capacitor (its the black one that sits on the esc) has come off on 3 of the 4 connect points...
...I'm confused why it ran like that and didn't fail? Temps were only 130 after an 8min main...so as long as I swap out the capacitor for a new one should the esc itself still be ok? It seemed to be working fine at the end still!?
Also, to a viper person, do you have these capacitors in stock as I am gonna need to get a store to order them in!
Dave
...I'm confused why it ran like that and didn't fail? Temps were only 130 after an 8min main...so as long as I swap out the capacitor for a new one should the esc itself still be ok? It seemed to be working fine at the end still!?
Also, to a viper person, do you have these capacitors in stock as I am gonna need to get a store to order them in!
Dave
03-30-2013 | 10:28 PM
#7360
Joined: Jan 2003
Posts: 8,616
From: New Jersey
Huh? I don't know what your talking about i don't think you can even remove those from the VTX8.
Im starting to think my servo has some internal binding. I just grabbed my 2wd thats running the same servo and turned the wheels by hand moves pretty easy. Moving the wheels on my 4x4 its a lot harder to turn them by hand. I unhooked the servo and there is no binding.
Hopefully my servo is just having an issue I will swap them and try the other one tomorrow.
Although last week I ran the same sevo with a hobbywing WP8 esc and didn't have a problem.
Im starting to think my servo has some internal binding. I just grabbed my 2wd thats running the same servo and turned the wheels by hand moves pretty easy. Moving the wheels on my 4x4 its a lot harder to turn them by hand. I unhooked the servo and there is no binding.
Hopefully my servo is just having an issue I will swap them and try the other one tomorrow.
Although last week I ran the same sevo with a hobbywing WP8 esc and didn't have a problem.
03-31-2013 | 04:16 PM
#7363
I had issues with both of my new vtx10rbe esc's. Both seemed to glitch when applying throttle. It was an intermittent problem, because you could unplug and plug back in and it worked fine. But not every time. We rebound and rebound, switched models, changed to middle deadband reduced power, changed sensor wires, motors etc etc as i was scrambling through the viper website for help.This is on 2 seperate 4 wheel 10th scale cars yesterday at the proline race with 2 new viper esc's. Same problem. At this point Im gonna have to say my race day was pretty much ruined on a 4 1/2 hour away race. Not happy viper!!!
03-31-2013 | 04:19 PM
#7364
I had issues with both of my new vtx10rbe esc's. Both seemed to glitch when applying throttle. It was an intermittent problem, because you could unplug and plug back in and it worked fine. But not every time. We rebound and rebound, switched models, changed to middle deadband reduced power, changed sensor wires, motors etc etc as i was scrambling through the viper website for help.This is on 2 seperate 4 wheel 10th scale cars yesterday at the proline race with 2 new viper esc's. Same problem. At this point Im gonna have to say my race day was pretty much ruined on a 4 1/2 hour away race. Not happy viper!!!