Victor ESC's have an electronic brake feature, switchable on/off by a small 
jumper. I think most people (including me) have left it turned off as it seems 
to be rather a violent stop from 5+mph, and these tanks typically have enough 
weight and rolling resistance to stop themselves.

300-400 should be fine for your final motor drive. If by final drive you are 
referring to track sprocket rpm, then it might be a bit high depending on how 
big your track sprocket is.

If you have a 4" track sprocket, that is a circumference of (rounded) 12", with 
a an RPM of 400 on this sprocket that is about 4.7mph

The way I build is to sort out my track sprocket and the speed I want to 
achieve, and work back from there with motor/drive sprockets to suit. So geared 
motor output speed of 300-400 is in the ball park, and you can fine tune with 
the sprocket on your driveshaft if necessary.

Ben


-----Original Message-----
From: rctankcombat@googlegroups.com [mailto:rctankcom...@googlegroups.com] On 
Behalf Of Cobra9431
Sent: Thursday, 1 April 2010 8:19 AM
To: R/C Tank Combat
Subject: [TANKS] Re: new to the hobby, need motors

So, is 400 about the ballpark that should be aiming at for a final dive rpm ?

Aaron
T0??

On Mar 30, 8:13 pm, Derek Engelhaupt <tan...@gmail.com> wrote:
> Most definitely running at 24V.... I'm using the same ones Mark is 
> using in my KV-2 also which will be in the 110-130lbs. range.  If you 
> wanted to gear them down a little, use a larger than 9 tooth sprocket on the 
> final drives.
> You can see the basic speed of the motors 
> here:http://www.youtube.com/watch?v=d7dfrddGMOI Bear in mind that it will be 
> somewhat slower since my M113 only weighs in at about 50lbs. in that vid.
>
> Derek
> T065

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