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-   -   Viper RC - (https://www.rctech.net/forum/radio-electronics/455152-viper-rc.html)

Riverbluff 06-07-2015 07:28 PM


Originally Posted by Ol_GT (Post 14044021)
What do you need to update firmware?

You need to get the v-link cable so you can hook the esc to your computer . I think it was like $16 from A-main. Super easy to update. Takes about 3 minutes.

Need to update my 10r Orange next. Just didn't want to because the fan port won't work after the upgrade. But the vipers really don't need a fan and as I mentioned the performance difference between a55 and a64 is amazing. Probable do the update before I swap it into my SC5M once it arrives.

RBraswell 06-08-2015 03:30 PM

What are the tall tale signs a motor is starting to die? I am trying to help my dad figure out why his 10.5 has very poor breaks. it still has punch on trottle but the brakes are just not there.....

Firmware- A64
ESC- vt10r orange
Motor- Track power 10.5
Raido- Futaba 4pls

I have tried profiles 1-2 and every other profile just to see. Brake strength from 80-100...at different frequencies with no effect.

Riverbluff 06-08-2015 06:08 PM


Originally Posted by RBraswell (Post 14045340)
What are the tall tale signs a motor is starting to die? I am trying to help my dad figure out why his 10.5 has very poor breaks. it still has punch on trottle but the brakes are just not there.....

Firmware- A64
ESC- vt10r orange
Motor- Track power 10.5
Raido- Futaba 4pls

I have tried profiles 1-2 and every other profile just to see. Brake strength from 80-100...at different frequencies with no effect.

What is the end point set at on your transmitter? Set it to 100 then re calibrate the esc to the radio. There are a couple different settings for the brake using the progage. If I were you, after I set brake eps to 100 and re-calibrated the esc and radio, I would go in and set all my brake settings to 100 and then start dialing back from there.

CarlCrocco 06-08-2015 09:03 PM


Originally Posted by RBraswell (Post 14045340)
What are the tall tale signs a motor is starting to die? I am trying to help my dad figure out why his 10.5 has very poor breaks. it still has punch on trottle but the brakes are just not there.....

Firmware- A64
ESC- vt10r orange
Motor- Track power 10.5
Raido- Futaba 4pls

I have tried profiles 1-2 and every other profile just to see. Brake strength from 80-100...at different frequencies with no effect.

Brakes have always been weak on the vtx10s, but yeah redo your calibration on your radio make sure the end points are maxed to 100.

RBraswell 06-09-2015 10:11 AM

I will give this a try tonight and post my results. I am pretty sure I did the endpoints to 100 and a recal but I will do it from scratch again.

Baja-Boy 06-09-2015 08:01 PM

I have never had an issue with brakes being weak on a vtx10/10R, as mentioned make sure calibrated at full throw. on my dx3r pro I have all sorts of brake things in the transmitter that I have to set to 0 or default before calibrations, I am unfamiliar with the radio mentioned, but make sure no fancy brake anything is activated in transmitter when calibrating.

nikos2002 06-10-2015 06:09 AM

As Bill mentioned, the EPA setting is important, if you set it higher than 100 there is too much "throw" for the brakes to work correctly, the software is designed at 100 for throttle and brake.

Once you have done that, Brake Strength 100, Brake Freq 4000. The Frequency will make a difference as the lower freq will give it more "bite". What's too low, well, there really isn't, it depends on the feel you want. When you start hearing the electronics squeal under braking, its really low -- to note another brand of esc is known for that, so it will give you an idea that they just pre-programmed the freq very low.

Now if you get to the point where you are locking tires up. You can back off the Freq slightly, back off EPA slightly, or a combo of both. Everyone is different in how they like the feel.

RBraswell 06-10-2015 08:10 PM


Originally Posted by nikos2002 (Post 14047892)
As Bill mentioned, the EPA setting is important, if you set it higher than 100 there is too much "throw" for the brakes to work correctly, the software is designed at 100 for throttle and brake.

Once you have done that, Brake Strength 100, Brake Freq 4000. The Frequency will make a difference as the lower freq will give it more "bite". What's too low, well, there really isn't, it depends on the feel you want. When you start hearing the electronics squeal under braking, its really low -- to note another brand of esc is known for that, so it will give you an idea that they just pre-programmed the freq very low.

Now if you get to the point where you are locking tires up. You can back off the Freq slightly, back off EPA slightly, or a combo of both. Everyone is different in how they like the feel.


It is now resolved. Turns out it was a digital trim issue. Dt4 to be precise, it adjusts the trim strength of the break. I've never tinkered with that radio before so I learned something new! And best yet my pops will be glad it is working.

boostem 06-15-2015 08:25 AM

Im having an issue with my truggy stopping and needing a little push to get moving again. Ive adjusted my radio to prevent it from stopping but it still happends every once and a while. I can see the inputs of power/brake on the ESC registering (VTX8), next to the power switch, so Im hoping its a common problem with an easy fix. I just dont know if its a ESC, transmitter, reciever or wiring problem. Any advice would be appreciated!

AssocRacer 06-15-2015 08:34 AM


Originally Posted by boostem (Post 14054295)
Im having an issue with my truggy stopping and needing a little push to get moving again. Ive adjusted my radio to prevent it from stopping but it still happends every once and a while. I can see the inputs of power/brake on the ESC registering (VTX8), next to the power switch, so Im hoping its a common problem with an easy fix. I just dont know if its a ESC, transmitter, reciever or wiring problem. Any advice would be appreciated!

Usually that's a sensor issue. First I would change sensor wires. If that doesn't work change the motor if you have another one or find someone to let you try one of theirs and see if you get the same results. If it still does it with a different sensor wire AND a different motor, then there's something wrong with the sensor pick up on the ESC.

Neverstop 06-16-2015 07:03 AM

From my experience if it's a sensor wire issue the viper will go into protection mode. How about the motor have you cleaned it recently sensor board could be dirty.

nikos2002 06-16-2015 01:59 PM

Neverstop - Thanks for mentioning that!!! Its often over looked!!!

Ol_GT 06-19-2015 06:16 PM

I have two tabs on my vtx10r that have broken the solder post off of. Anyone have a clue what it costs to get this repaired?

nikos2002 06-22-2015 09:41 AM


Originally Posted by Ol_GT (Post 14060817)
I have two tabs on my vtx10r that have broken the solder post off of. Anyone have a clue what it costs to get this repaired?

Check your PM - more details there than typing a long post on thread...

Neverstop 06-22-2015 05:27 PM

Just put the black edition 10.5 in my x-factory short course truck very happy with it. What rotor do these come with them and any experiance with different rotors in the x factory trucks.


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