On the SBEC debate- biggest recommendation is to check your specific equipments specs (both servo and receiver). Be mindful, more voltage you keep trying to add to servo will add overall drain to the system, which is something to think about with all the spike the systems get with todays motors.

On Timing- Jim did put a good post up from some stuff we have learned. Also remember don't think putting 60 degrees of timing makes everything better. Start low, test to see what works on track and in temperature.

Another question I saw was on external BEC, I have not seen or heard anyone using it with VTX8 yet.

That's an interesting point in there, if you set your system for higher voltage are you more likely to see a brownout problem as you are allowing more pull from the servo?

With what our esc's put out in power, combined with the poor efficiency we see from some motors, the last thing you see is something else that requires a higher output. It's a good bit of strain on an electrical system.

Wouldn't setting the BEC for 7.4 eliminate brown outs and the need for an external BEC as that is what many of the servos require?

I am looking to not have the need for an external BEC on my Radiopost servo.

I run Radiopost servo's in all my car at 6.0v with no problems

So what would cause brown outs and the need for an external BEC on some cars/servos?

I did notice that servos have the operating range usually from 6-7.4v so figured that 6 would be ok, just a 'little' slower, but a lot of times an external BEC is needed.

I plan on setting my BEC as high as it can go up to 7.4v. I have a Mamba Monster in my Vorza which I have at 7.0v, the highest it will go on the latest FW I could use. I wouldn't go past 7.4v though.

What does a Fully charged 2S Lipo peak out at. That will answer your Question.

All ready to rock, programmed on the low setting with 12/54 to test it all out and see how powerfull the 5150 is.
Quick general question, what kind of tape do i use to tape my temperature sensor to the motor?

im going to take a guess that you are running the Traxxas TQi telemetry?


looking at it online, it looks like you can use a tie wrap (wire tie)

Nope, spektrum dx3s. The instructions say to tape it, but i wouldn't have have thought any old office sticky tape would do the job, and they don't specify what type.

I am using black electrical tape and seems to be holding up just fine. Some high temp tape "might" work better but I just used what I had.

Has anyone tried using thermal paste between the motor and motor plate like they use on CPUs? If so did it help any?

I've used it on a heatsink for a motor... I had no idea that it doesnt dry

I think all of the HV servos are using 7.4V when specifying their speed and strength values, that does not necessarily mean they can't take a higher voltage.

This is the servo I'm using in my 1:8 car. It says it's 100% Lipo compatible which would mean it is good for a full charged 2S Lipo, i.e 8.4V. But I've only run it at 6.0V unil now so don't take my word for it. However, I will definitely run it at a higher voltage with the VTX8. Must check the specs of my receiver first...
http://www.amainhobbies.com/product_...o-High-Voltage

Got my VTX8 installed in my EB48 last night. I must say the progauge is a pretty slick little device. The Savox servo is nice and fast with that 7V BEC I look forward to trying it out in Phoenix next week.