4LikesViper RC -
05-03-2012 | 07:09 AM
#4576
Tech Fanatic
iTrader: (1)
Joined: Oct 2008
Posts: 886
Viper had just went into business when the VSE motors were released, and the only real problem was that we tested the motors with Team Drivers / Experienced Racers. Everything performed fine and we had good results. It is when the motors made it into the hands of those less experienced that there were overheating problems.
The failure came in a young company that didn't know you had to consider not everyone is a experienced racer. The motors ran well, and we have some team drivers who have run them week in and week out for over a year with no issues, it was the people that were new to R/C, or new to Brushless, that would start off with a guess on gearing and over-heat them.
Viper re-called the motors and refunded everyone's money, not because they were bad, but to make sure the customers were satisfied. Rather than point fingers / blame towards the users not being experienced enough, or just replace motors until people "were off warranty", Viper did the right thing. Give them their money back so they can go purchase what they needed.
It was a costly learning experience, but it has allowed for more time for R&D and engineering to make sure the product is not just a "racer's level" product. 1/8th electric is a class / market that is only popular in the US, and is a very small segment of that market, but Viper has committed to that market.
We are still testing, and doing the "un-thinkable" to these motors to prove them out. We've changed our testing procedures and thought process to more duplicate the whole market, not just the racers.
The failure came in a young company that didn't know you had to consider not everyone is a experienced racer. The motors ran well, and we have some team drivers who have run them week in and week out for over a year with no issues, it was the people that were new to R/C, or new to Brushless, that would start off with a guess on gearing and over-heat them.
Viper re-called the motors and refunded everyone's money, not because they were bad, but to make sure the customers were satisfied. Rather than point fingers / blame towards the users not being experienced enough, or just replace motors until people "were off warranty", Viper did the right thing. Give them their money back so they can go purchase what they needed.
It was a costly learning experience, but it has allowed for more time for R&D and engineering to make sure the product is not just a "racer's level" product. 1/8th electric is a class / market that is only popular in the US, and is a very small segment of that market, but Viper has committed to that market.
We are still testing, and doing the "un-thinkable" to these motors to prove them out. We've changed our testing procedures and thought process to more duplicate the whole market, not just the racers.
05-03-2012 | 07:42 AM
#4577
Tech Adept
iTrader: (1)
Joined: Oct 2011
Posts: 205
From: Bend, Oregon
I have a Savox 1258 in my SCTE and have run Copperhead allot (R.51) and have had no issues with my radio system (Futaba 603 Receiver).
Some ESC's / Radio combinations experience problems with glitch and brown out issues, due to the BEC not having enough amp capacity that require to run a glitch capacitor / external BEC. In my opinion this tends to get the blame pinned on the ESC, or the servo, but it usually seems to be all relating around a particular radio brand.
Fortunately we have had no reports of those issues with any of the Viper ESCs irregardless of the radio system or receiver used.
I myself have 4 cars with Viper ESCs, all have Savox 1257 or 1258 servos and no issues.
Some ESC's / Radio combinations experience problems with glitch and brown out issues, due to the BEC not having enough amp capacity that require to run a glitch capacitor / external BEC. In my opinion this tends to get the blame pinned on the ESC, or the servo, but it usually seems to be all relating around a particular radio brand.
Fortunately we have had no reports of those issues with any of the Viper ESCs irregardless of the radio system or receiver used.
I myself have 4 cars with Viper ESCs, all have Savox 1257 or 1258 servos and no issues.
Thanks,
I am using a Futaba 4PL radio system ( Futaba R2104GF receiver ). I'll give the servo a try.
05-04-2012 | 07:02 PM
#4578
Tech Regular
iTrader: (20)
Joined: Sep 2007
Posts: 359
From: Burlington
TLR22 viper esc and viper 13.5
I run indoor carpet, can someone point me to a esc setup and gearing for a tlr22 with a viper esc and viper 13.5.
At my skill level I am not running a boost mode. Running it in the blinky mode profile 4. Endbell timing at 35. FDR is 5 or 34pinion and 70t spur.. How off am I? I checked the temp after a race it was around 125 degrees..
Should I choose a boosted profile? What can I change to make it seem more smooth..
Thanks
At my skill level I am not running a boost mode. Running it in the blinky mode profile 4. Endbell timing at 35. FDR is 5 or 34pinion and 70t spur.. How off am I? I checked the temp after a race it was around 125 degrees..
Should I choose a boosted profile? What can I change to make it seem more smooth..
Thanks
05-04-2012 | 08:09 PM
#4579
Got to try out the copperhead/5150 combo and I am impressed. Good job Viper, and for the price IMO its unbeatable.
First of all, while it doesnt have the feel of sensorless, and it has a feel that is unique unto itself, it is very smooth. The power delivery from low to mid throttle is very very smooth and tame while giving it a good on throttle gives a massive surge of power comes on smooth, which feels drasticaly different than my pro 4 combo which hits real hard. What the Viper combo does is provide a very usable powerband that is easy to drive hard without punishing you for being to quick on throttle.
I never knew sensorless could feel so good
BTW how many watts does this motor make?
First of all, while it doesnt have the feel of sensorless, and it has a feel that is unique unto itself, it is very smooth. The power delivery from low to mid throttle is very very smooth and tame while giving it a good on throttle gives a massive surge of power comes on smooth, which feels drasticaly different than my pro 4 combo which hits real hard. What the Viper combo does is provide a very usable powerband that is easy to drive hard without punishing you for being to quick on throttle.
I never knew sensorless could feel so good
BTW how many watts does this motor make?
05-04-2012 | 08:51 PM
#4580
zleader - PM me your esc settings, and I can give some recommendations.
symmetricon - Thanks - the check is in the mail!! (
). Glad you like it, its a deal for the performance you get. Don't know about the wattage, I will check with the engineers, I normally don't care if its fast on the track!!
symmetricon - Thanks - the check is in the mail!! (
). Glad you like it, its a deal for the performance you get. Don't know about the wattage, I will check with the engineers, I normally don't care if its fast on the track!!
05-05-2012 | 03:08 AM
#4584
05-05-2012 | 07:39 AM
#4585
silvalis- start throttle pwm about 9600 or 12k, brakes are little more personal, everyone likes something little different. I never ran boost in 4wd buggy. Nu I guess it would depend on length of track and traction available. Just keep one eye on your temperatures until you are happy with the direction.
05-05-2012 | 10:28 PM
#4587
05-06-2012 | 10:10 AM
#4588
its an x factory stadium. i ended up doing street tests and wound up with a 24/78 with a 7 minute temp of 135. i did 5 minutes of simulated offroad (lots of turns brakes quick throttles and medium throttles) then i did 2 minutes of hard long straights. its not boosted so it should be close for the track
05-06-2012 | 05:52 PM
#4589
Thanks for the interest Bob - Guy answered the question for me. BTW, your gonna like it!!!
apriliamille - go for it! Might just want to check the temps after the first 2 minutes on track just to verify. It also depends on how hard you are on the throttle and brakes, more aggressive generates more heat.
apriliamille - go for it! Might just want to check the temps after the first 2 minutes on track just to verify. It also depends on how hard you are on the throttle and brakes, more aggressive generates more heat.