Ok, thank you vary much for the advise, I will defiantly keep it in mind.

The VTX10R was not designed to run a 4 pole motor. I would be very cautious about even attempting it. Our VTX8 was the first sensored speed control with 4 pole in mind.

Hey nick i talked to you awhile back in the summer about possibly applying for a sponsorship from Viper, was wondering when i should be sending in my APP.

good catch! I saw 4 pole and immediately thought vtx8.

Viper VF8 2700kv

Help me out here......

What is the intention of this motor?

On

4S retarded fast/too powerful for racing

Motor over 40.000 RPM can't be good for temps.

.

I thought these motors were intended for 4S??

maybe its for the 3S crowd but was listed out there as being capable of 4S?

have had some funny behaviour from my vtx8 today. motor temp cut off is disabled but its been cutting off, usually after a tough landing. f and r lights flash and the p light is red. checked temps but nothing to be concerned about. whats up?!

Most likely a bad plug between the battery and the ESC. Try replacing the plug and see if that fixes it.

Also swap the sensor wire, thie vipers have given me odd symptoms due to a simple sensor wire swap!

Got my Viper 1900Kv motor in, feels very quality, looking forward to trying it out.

wonder if I should just drop it in my truggy as if turning the shaft is any indicator I wouldn't be suprised this has more torque than my Tekin 1900.

Nike I know probably not the thread but with those xpert servos is there a big difference between the std si and the lee martin series for a short course 4wd or 1/8 buggy

So let me try and answer that without writing a book (sorry if its long). When the motors are wound not matter what style or wind - ie 2T Delta or 1.5T Wye. They come out to a certain KV number. Some companies then either advance or decline the timing of the motor to change that KV number. Our motors are designed at 0* timing. This way they can run the same speed forward or reverse (some chassis require reverse motor direction). So the way the winds we wanted use worked out it became 1900kv, 2100kv and 2700kv. Yes all designed around 4s. Yes, 2700kv is a bit crazy.... but have you seen what some people in our hobby do????

Of course geared correctly and used correctly, its can be wicked fast - if you have the area needed to max it out.

If your getting the F and R light alternating -- its a high amp spike error. As bds said it could come from the battery plug moving (causing a small arc), it could also be the sensor in the motor. Its easy to forget that little circuit board takes quite a bit of abuse in side the motor. Along with sensor wire - those would be the big things to check.

Difference between Xpert SI series and Lee Martin series - besides the color and limited edition of the LM's - the case structure is different as well. The SI series is more like most people see with Savox. The core of the servo has a metal piece around it, with plastic tops and bottoms. The LM's - that center part is one piece metal structure. So all the internal components are mounted directly to that core structure. Gives the servo little more internal stability.

For racers - slightly harder chance to break gears, as the internal pins that hold the gears in place have less chance to flex (which would cause the gears to lose mesh). As an example our SM series servos use the same all metal core with a metal top piece as well. Break great with that servo you have hit something very, very hard. Trust me -- I have tried!!

Let us know what you think -- your reasoning is valid, look for little RPM difference as well .....