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From: |
"Gene Burbeck" <gburb-at-advantagecs.com> |
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Subject: |
RE: Gene's tank[TANKS [TANKS] |
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Date: |
Fri, 3 Aug 2007 13:51:36 -0400 |
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Reply-To: |
tanks-at-rctankcombat.com |
Be prepared to spend well over $2000 to build a tank
that truly takes advantage of the brushless motors with an enormous
power-to-weight ratio. You CAN get reversing controllers for them, big RC boat
ESCs will handle 1000's of watts and do the reversing you need. If you go this
route I HIGHLY reccomend using a bigger brushless motor. Lots of gearing is
normally needed to allow the motor to spin very fast and run
efficiently/powerfully. While outrunners have lower power to weight ratio than
inrunners, they have more torque and less speed - much more suitable for a
tank drivetrain.
A pair of those would make for a truly bad-ass tank
drivetrain, provided they're geared right and the voltage is high enough. While
$150 seems expensive, it is incredibly cheap for an outrunner that size. As far
as I know, there is no cheaper place to get off-brand brushless motors
- period. I've used a few of their motors in bots, and they are nearly as
sturdy and efficient as name-brand (Axi, Hacker, Plettenberg, Neumotors, or Mega
for instance) motors that sell for >3 times United Hobbies' price.
Have fun, build the frame light, and use batteries
better than SLAs - you'll be on your way! I'd be thrilled to see someone
build such a tank.
Gene
I'd imagine that you could do clutch-and-brake steering relatively
easily, which is 1/2 skid only of course. Full-skid gearboxes are fantastically
complex. A few tanks have used petrol-electric systems, but generally cr*p ones
like the St Chamond and the TOG II- and that Belgian APC someone has just
referred to.
A while back in my roamings on e-bay I came across brushless
motors which claimed to be 300W and only a few ounces in weight. Brushless
motors are 1-way only, of course, but with such a small size (and cost- £13 or
so I think) I wondered if one could use 4 of them- 2 forward, 2 reverse for tank
motors.
Phil
-----Original Message-----
From:
funkyneroc-at-ntlworld.com
To: tanks-at-rctankcombat.com
Sent: Thu, 2 Aug 2007
11.48pm
Subject: Re: RE: Gene's tank[TANKS]
Gene said:-
>:"Hope you or someone else actually completes a single motor drive train