replacing the sensor wire on a 4.5 hv??
 

I'm decent at soldering, but how easy is it to replace the sensor wire on a novak HV 4.5?? it has some wire left, but I wan't to solder it to the board to keep it looking good.

IIRC the sensor wires all need to be the exact same length in order for it to work proper

thats not that hard to do...

but how close are they to each other on the sensor??

just got done replacing it, it wasn't too hard. all is good:yipi:


BTW, I feel sory for the person that sold me a working novak HV esc, and the 4.5 for $25:gasp::angel:




now, is there anything I should know about the HV esc???
I'v heard that they need an external bec on a 4s??

How long ago did you buy it and where from? It might have been me

I bought it on sat/sun on RCT under the same username...

Guess it wasn't! I sold one last summer, could have been just a bad sensor wire as well. I didn't know nearly as much then. I had seen a spark near the heatsink and it died. Motor still worked great on a MM though. I honestly miss the system, it was my first BL system and honestly did it's job very well. I ran it on 12s Nimh, it was butter smooth and had enough power to do a standing backflip on my G2R as well as hit 38MPH on police radar.

I don't think you need a bec but the motor revs way hard on 4s. The LHS sold half a dozen or so a while back and every motor returned. Either the glue holding the magnet to the rotor melted or the plastic casing at the rear melted.

I'm not saying this will happen to you, might have been half a dozen half wits for all I know. You will need to gear it just right though because it's high kv it has a smaller range of optimum gearing.

IIRC the original esc had no braking programing, you'll need to adjust it on the EPA.

Hope this helps.:smile:

You do need an external BEC if you are running a single 4S pack.

If you run two 2S packs, one connected to each of the two inputs, you do not need an external BEC. But note with the two pack setup, one of the packs will be drawn down faster because the ESC internals and other electronics are powered by the BEC wich runs of of just one of the two packs.

^ Sorry, my bad. Mustn't have read it right.