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

Bob Barry 03-04-2014 12:47 PM


Originally Posted by micrors4guy (Post 13063676)
My vtx8 will not work with the high speed or advanced setting on my eurus. I have been running a64 on it since I got it. Guess it was a team driver I got it from. I will try reflashing it and using it again

ok that's good feedback. I should mention that I tested with the VTX10 and VTX10 BE. Neither were 'R' versions. The VTX8 is a different firmware. Keep the info coming!

micrors4guy 03-04-2014 01:12 PM


Originally Posted by Bob Barry (Post 13065019)
ok that's good feedback. I should mention that I tested with the VTX10 and VTX10 BE. Neither were 'R' versions. The VTX8 is a different firmware. Keep the info coming!

I have a vtx1 and vtx10 that I just updated as well. I will try thoes out as soon as I can.

JP.R 03-04-2014 02:40 PM


Originally Posted by timaay!! (Post 13062174)
Will the Vtx10 black edition run Reedy motors?

Yes

cweb 03-04-2014 03:39 PM

Bob, What are the issues with the firmware that people are having? does high speed mode have anything to do with frame rate on the radio?

King DORK 03-04-2014 05:29 PM

Yes!! My wife rescued me and downloaded the programs for my VTX10R escs and my VTX8. My dumb caveman butt has issues with anything computer related. She's the bomb!

Bob Barry 03-04-2014 05:53 PM


Originally Posted by cweb (Post 13065526)
Bob, What are the issues with the firmware that people are having? does high speed mode have anything to do with frame rate on the radio?

Most of your modern radios have super high speed modes for the servos in Nitro Vehicles. Our ESC is sensitive enough to pick this up. We figured out that if you put the radio in normal mode, it corrects the issue.

The symptoms resemble a bad sensor wire. Some cogging, stuttering, etc.

As I said, I haven't seen anything official saying this was resolved, but I have been running the fastest speeds on my radio with no issues.

Tom-sct 03-05-2014 07:06 AM

brake adjust
 
Hello guys.
So I have a VTX10 esc with your 8.5 turn on my Losi 22-4.
I use the ez link to adjust the brake power to 100%
With this setting while the brakes are fully applied I can roll the car forward.
What other adjustment am I missing to get 'skidding' brakes ?
Do I need to use expo on the transmitter ?

Thanks.
Tom

DustinH 03-05-2014 07:18 AM

Try Bob's brake settings


Originally Posted by Bob Barry (Post 13049159)
I'm using the same brake settings, but my throttle settings are different.

here's my settings:

17.5 buggy (blinky)
5000 mhz throttle pwm
100% punch
dead band medium
linear throttle curve
800 mhz brake pwm
67% brakes esc / 75% radio (this only works with 800mhz. If I don't run 800mhz, I feel like I have no brakes with this setting)
12% drag brake

17.5 SCT blinky
same as above but usually have to dial in a bit more brakes on the radio and esc 70% esc and 80% on radio.

2wd mod buggy (8.5 or 9.5 usually)
9600 mhz throttle pwm
80% punch
dead band medium
linear throttle curve
800 mhz brake pwm
67% brakes esc / 75% radio (this only works with 800mhz. If I don't run 800mhz, I feel like I have no brakes with this setting)
12% drag brake

If the grip is down, I will raise my forward PWM until I get it smooth enough for my liking. I adjust that first and Punch second because I feel punch is a much bigger adjustment. I would rather leave it set


Wildcat1971 03-05-2014 07:19 AM


Originally Posted by Tom-sct (Post 13067673)
Hello guys.
So I have a VTX10 esc with your 8.5 turn on my Losi 22-4.
I use the ez link to adjust the brake power to 100%
With this setting while the brakes are fully applied I can roll the car forward.
What other adjustment am I missing to get 'skidding' brakes ?
Do I need to use expo on the transmitter ?

Thanks.
Tom

you can lock up the wheels from full speed. or are you referring from a stand still, you push the car and it wont lock up. Also, a vtx10 with an 8.5 in a 22-4 seems very very borderline.

Tom-sct 03-05-2014 08:59 AM


Originally Posted by Wildcat1971 (Post 13067717)
you can lock up the wheels from full speed. or are you referring from a stand still, you push the car and it wont lock up. Also, a vtx10 with an 8.5 in a 22-4 seems very very borderline.

With brake power set @100%.
I can push the car forward with the brakes fully on. (Throttle pushed all the way to brake).

astarback 03-05-2014 09:02 AM

Turn the brake frequency down

Wildcat1971 03-05-2014 09:06 AM


Originally Posted by Tom-sct (Post 13068077)
With brake power set @100%.
I can push the car forward with the brakes fully on. (Throttle pushed all the way to brake).

non of my esc's of various brand do what you want this to do. Brushless systems never seem to have any brushed type of braking. I have run, viper, tekin, HW, orion, castle and the hobbyking generics and all are the same. No brakes at a stop. But when racing, I can lock up my wheels easy. my pwm is a 800 for the brakes and you still cant do what he is asking.

DavidAlford 03-05-2014 09:29 AM


Originally Posted by Tom-sct (Post 13068077)
With brake power set @100%.
I can push the car forward with the brakes fully on. (Throttle pushed all the way to brake).

You'd have to have a motor with some extremely strong magnets to make that happen. I don't believe it is possible. Every brushed motors wouldn't do that.

nikos2002 03-05-2014 09:36 AM

sorry, guys was too busy at the office yesterday to get on here - thanks to those whose answered questions.

-- yes, a64 was designed and tested with high speed settings on the major radio brands. In the past we have received 2-3 comments from people with that version of the KO radio, while others report no issue. The high speed setting (or setting it to "lower speed"), doesn't effect the overall operation of a speed control, it will still react with great, quick, smooth reactions. As Bob had mentioned previously, check a different model on the radio to see if you get a similar experience. As sometimes different models can vary on signal.

- Brakes, stopping power. I think with what Tom is looking for, that is determined more by the motor and the magnet power it creates. The speed control can tell the motor to stay locked on brakes, but the magnetic field of the motor might not "hold" the car when you push it.

Tom-sct 03-05-2014 10:18 AM


Originally Posted by nikos2002 (Post 13068190)
sorry, guys was too busy at the office yesterday to get on here - thanks to those whose answered questions.

-- yes, a64 was designed and tested with high speed settings on the major radio brands. In the past we have received 2-3 comments from people with that version of the KO radio, while others report no issue. The high speed setting (or setting it to "lower speed"), doesn't effect the overall operation of a speed control, it will still react with great, quick, smooth reactions. As Bob had mentioned previously, check a different model on the radio to see if you get a similar experience. As sometimes different models can vary on signal.

- Brakes, stopping power. I think with what Tom is looking for, that is determined more by the motor and the magnet power it creates. The speed control can tell the motor to stay locked on brakes, but the magnetic field of the motor might not "hold" the car when you push it.




Ok guys.
now I understand the philosophy behind it.
The motor magnets aren't strong enough to completely stop the car.
Ill try turning down the mega hertz setting.
Thanks for all your help.

Tom


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