12-21-2009, 08:00 PM
I have a 3906 emaxx that I am considering upgrading to brushless. I had decided on the EZRUN 80A combo a while back but went to buy now and see that they have been discontinued.
I now have found the replacement XERUN/kershaw 80A combo and I am curious how this system compares. Anyone using it yet? Id like to know if the performance is the same and also if the ESC has the same programming options like adjustable LVC cut-off etc... I run my truck primarily at the track and would like to achieve speeds over 40mph and still have lots of torque. Will this combo get the job done? I will be running 25C 4000mah and 20C 5000mah 2S lipos.
Heres a link to the combo im looking at: http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWAX:IT
12-22-2009, 12:48 AM
I have 3 EZrun's, and ONE of the 80A EZrun's.
Somewhere I read that the new Xerun's are exactly the same guts as the older Ezrun's. They are now trying to market them as sensored, whereas the older ones they marketed them as sensorless. The reality is the old ones were also sensored, so I don't know what they are aiming at now, racers perhaps??? The new xeruns are also sensorless, and if you look at the photos on ebay, they are selling them with a sensorLESS motor, but marketing it as a sensored esc. Strange.
If they really are identical innards wise, then you should be fine with it. It will get you well over 40 mph with the right batteries. The motor I have is the 2350kv motor, and I got 46mph with stock 3905 gearing and 4S.
They will have programmable LVC. Here (http://www.hobbywing.com/english/ArticleShow.asp?ArticleID=459) you can look at the proper specs of it and download the users manual.
Just thought I'd add my personal experience with the ezrun version.
It is not as smooth as my new MMM ESC. My Ezrun died on me, so I replaced it with the MMM ESC which I am running on the hobbywing motor, and it goes very well. Smoother than the ezrun and I have more confidence in it, especially with the LVC.
The EZrun worked well when it worked, although I feel it was not very good at sometimes going into reverse. Occasionally it would not engage reverse at all. Usually when it was on grass, or if I changed the gearing from stock supplied 19t pinion. It's as if the ESC is only rated for 20A or some ridiculous amount in reverse, and on grass or changing gearing it would exceed the current (in reverse ONLY) and then just flat out refuse to enter reverse. Needless to say, the only way was to lower gearing. For this reason I didn't like it. I like refinement in EVERYTHING, and to me this was a design flaw. The MMM so far is way superior. Also I noticed that changing settings, like punch control, made no real difference. Maybe they have improved the workings of the xerun, but seriously, I doubt it. All they've done, IMO, is repackage it in a blue case and put the price up considerably.
My advice is to don't buy it, but rather look around for a used V3 MMM ESC and get whatever motor you want. I bought my MMM ESC for only $105 shipped and it's perfect, still under factory warranty. It doesn't have a scratch on it. It is better than the Ezrun or Xeruns and it should last a lot longer AND be a lot more driveable and tuneable.
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