Noted and really thank you so much with all the explain. Before the explanation from you, I was so confused what is the end rpm for. Btw, i will give it a try this weekend with start rpm 4500, end rpm14000, timing 40, turbo slope 22 and turbo timing 22.

I believe the majority that beta tested were running them in SCTE's since viper wanted a system that would stand up to the weight of that truck. As I've stated before the system to me is just as raceable as my tekin pro 4600kv system was so I think youll have plenty of power.

You can expect temperatures between 130-150* depending on gearing. And yes we tested with the heaviest stock SCTE we can find to make sure it can carry that weight around during extreme conditions

Congrats to Viper Team Driver Gabriel Galeano!!!

Date: Feb 4, 2012
Track: The TRACK, Maryland
Event: ROAR Region 2

TQ – 1st Place A Main 2wd Modified – Gabriel Galeano
2nd Place A Main Modified Short Course – Gabriel

Gabriel dominated the 2WD buggy class leading the way with Viper VTX10R ESC paired with a 7.5 VST motor. Smooth power delivery and loads of power, Gabriel took over the checkered flag proving that Viper will be a force at the up coming ROAR Nationals 2012. Good driving and congrats Gabriel.

Good deal, thanks for the reply, where's a good starting point for gearing?

Also, what is the can length of the 550 motors?

is this product just for firm ware updates or does it do like the tekin hotwire and make settings as well...
http://www.amainhobbies.com/product_...00mm-USB-Cable
thanks i have the new 5150 system hence the reason for asking

Depends on the track of course, start at 13 or 14. I personally stick to 14 or 15 depending on the size of the track I've never tried a 16 and don't have any reason to

Its for updating the firmware to the ESC, progauge is what you will want to make changes to individual parameters.

So i basically need both? Is the pro guage more like a field programmer or is it sumn you use with the pc?

So can someone help me understand what reasoning would be to pick either the 4500 or the 5150 copperhead for a SCTE?

The 5150 is faster but what the hell does that mean? it obviously turns more RPMS but how does that factor into choosing which one? Does the 4500 have more torque and acceleration?

my experience with motors made for 4x4SC is that the higher kv motors have a smoother feel. it's a broader powerband. it will have more top end obviously, but will lack the low end grunt of the lower kv motor. i don't know if this holds true for the copperhead line as i've only run the 4500. i can say that the 4500 system is very nice in the SCTE. for me, the 4500 would make more sense as it's more in line with the pinion options i already have (13-18). if i had more of a 11-15 pinion selection, i'd go with the 5150. if pinion selection doesn't come into play, then it would go to track conditions. if you run on a larger track with a long straightaway and jumps with long run ups, i'd go with the 5150. if the track is smaller with bigger jumps and smaller run ups, i'd go with the 4500.

Viper'ized with alittle... gray scale. :P

Thank you that helped a lot.

Remember, the Viper 5150kv is a 4-Pole rotor design, so it will perform differently than a typical 550 sized 2-Pole motor of the same KV. The 4-Pole rotor is more efficient, which translates to more power pretty much everywhere in the power-band than a similarly spec'ed 550 2-Pole motor.

The efficiency also translates into lower temps, but being able to predict what temps will be seen on the esc and motor is impossible. Gearing, track conditions, traction, air temp, gearing, vehicle, ESC settings, etc.... all contribute to temps

The function of the PcLink is to update the firmware of the esc as things evolve in the speed controls. It is not a necessity to have, because the firmware updates are not very frequent. The biggest one is when ROAR required there to be a "Blinky" mode on all non-timing profiled escs, but beyond that any firmware updates have been refinements.

Allot of the Viper dealers will update any of your esc's for you if you bring it in, and many of our team drivers have them and should be more than happy to update them if they happen to have their laptop/PcLink with them at the track. Viper can also update the firmware if you send it in.

The ProGauge is used for changing the settings in the profiles in the ESC's. We have found that one of the most appealing features of the Viper speed controls is the fact that one does not have to carry a laptop to the track with them. The ProGauge covers every function in all the speed controls, and is small enough to carry in your pocket. Many times I have gone to a qualifying heat and have seen the track has changed (it is dryer/wetter than before, rougher, etc....) and have made simple changes to the punch and or timing settings right at the side of the track during hot laps. If you are strapped to a PC, you have to go to the pits, start the computer, etc....... With the ProGague it takes seconds.

Viper has been working on V-Link, a PC based software that would allow one to change settings in the VTX line of speed controls, but it will not have any more adjustability than the ProGauge does. A release date is not known at this time though.