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From: "toast" <toast-at-shadowsofchange.com>
Subject: RE: Car Starters [TANKS]
Date: Wed, 8 Mar 2006 08:32:46 -0600
Reply-To: tanks-at-rctankcombat.com

The attached fan is free cooling that forces air directly into the starter
so I will be using that in addition to small DC fans to vent the hot air out
of the hull if I can.

When you say funny bearings are you talking about the starter bendix, the
gear part on the end of the shaft that extends when power is given to the
motor?  I think this is what another gentleman referred to as a "one way
bearing" (I think).  This shouldn't be that much of a problem.  A simple
weld of the bendix to the shaft and it doesn't move around anymore.

....smoke is bad....

You seem to have some experience with the starter in use outside of it's
intended purpose.  How strong would you say they are?  What do you think
about the feasibility of using them to drive a combat tank?

-----Original Message-----
From: tanks-admin-at-rctankcombat.com [mailto:tanks-admin-at-rctankcombat.com] On
Behalf Of John De Villiers
Sent: Tuesday, March 07, 2006 11:15 PM
To: Tanks
Subject: RE: Car Starters [TANKS]

Use a seperate FAN, When the motors stop, so does the cooling.
Some motorbike (KZ1300 comes to mind) starter motors dont have funny
bearings and stuff to worry about. They use centrifugal clutches to
engage the starter. Theyre lower power ( mine only sucks 45A at full
load ), but that is still plenty. At full load a 18AH battery lasts
about 10 minutes, and that thick wire connected to it start smoking. I
know this fist hand  ;-)

On Fri, 2006-03-03 at 23:58, toast wrote:
> Instructions I've seen show shaft extensions to fan blades that force air
> over the motor using the motor's own power, other then that I can cool
> with fans in venting of the chassis.  Along with the other modifications,
> the normally sealed body of the starter will most likely be altered to
> for better heat dissipation.  
> When I said I wasn't worried about heating, I meant that it wasn't a topic
> that I needed to discuss because I fully understand the repercussions.  I
> plan to cool it.  I'd be a fool not to.  It just isn't a topic that I'm
> confused about and need help or ideas on.
> -----Original Message-----
> From: tanks-admin-at-rctankcombat.com [mailto:tanks-admin-at-rctankcombat.com]
> Behalf Of jon s kowitz
> Sent: Friday, March 03, 2006 3:15 PM
> To: tanks-at-rctankcombat.com
> Subject: RE: Car Starters [TANKS]
> >I'm not worried about gearing it.  It shouldn't be that hard.  The one
> >bearings will be a challenge.
> Nothing a welder couldn't fix :D
> And cooling should be on your mind, these motors aren't designed to run 
> continuously under load, you'll melt the solder out of the armiture if you

> don't add a cooling device.
> My personal recommendation would be the Nippon/Denso starter used by