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CraigHickman 04-01-2008 14:42

Re: pic: More CAD insanity
 
Quote:

Originally Posted by lukevanoort (Post 667512)
If that is in fact the case, I am surprised that you could play the game at all. If the tracks don't ever slip then you can''t turn, and even if you could turn, you would draw massive amounts of current. A cim has a stall current of 133 amps and the FP stalls at, IIRC, 63 amps. The largest breaker you can use is 40A and the FP will smoke if run near 40A draw regularly. Now, breakers don't pop instantly, but that is still a bad situation to be in.

Brecoflex themselves actually say that red Linatex has a mu of 1.6, and it is in their interest to report a high number*. 1.6 is very, very high, but many robots can put out enough power (at least for a short time) to make it slip. Roughtop incline conveyor belting has been reported to possess a mu of 1.3, thus, you are getting about 23% more traction than a robot running common materials on a traction wheel. So, the traction is quite high, but definitely not 'unslippable.'


*I am not implying that they Brecoflex is falsifying data, I am merely saying that they wouldn't report a mu lower than it actually is, due to their financial interest in the matter.

He was talking about slipping when pushing in a straight line. Of course it's going to slip side to side when turning, the treads have a chamfer cut into them, as well as having massively less resistence when trying to skid steer, due to contact patch shape.

pakratt1991 04-01-2008 19:59

Re: pic: More CAD insanity
 
Quote:

Originally Posted by 114ManualLabor (Post 667545)
He was talking about slipping when pushing in a straight line. Of course it's going to slip side to side when turning, the treads have a chamfer cut into them, as well as having massively less resistence when trying to skid steer, due to contact patch shape.

That is what I was trying to say, let me elaborate, even when we were pushed backwards, it was not due to the tracks slipping.

One drawback to the track system is they drain A LOT of batteries at a rapid rate.

Cory 04-01-2008 21:10

Re: pic: More CAD insanity
 
Quote:

Originally Posted by pakratt1991 (Post 667743)
That is what I was trying to say, let me elaborate, even when we were pushed backwards, it was not due to the tracks slipping.

One drawback to the track system is they drain A LOT of batteries at a rapid rate.

if you got pushed backwards, didn't your tracks have to slip?


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