Re: Back to the Penn Line Atlantic 'Old Tevh.'

Charles Davis wrote:
mark wrote:
Charles Davis wrote:
David Nebenzahl wrote:
On 4/11/2008 10:19 AM Charles Davis spake thus:
<snip>
Ah, being the guy who started all this.... Yeah, I saw the
forward-backward play in the motor as soon as I got it to run, then put
it on the frame. I've taken it apart, and put two washers in.

What you need to aim for, is a 'minute' bit of play. Almost to the point
of there NOT being any play. But, there needs to be enough play, that
there isn't any 'binding'. Figuring 'typing paper' as .002" thick, and
'tissue paper' being somewhat thinner, you want about 1/2 of the 'tissue
paper' thickness.

Got maybe a little more than that.
<snip>
Anyway, I'm working to eliminate shorts - *geez* the tolerances on this
thing! I've already had to line the body around the motor with electrical
tape, and cut some plastic that comes with a new shirt, under the collar,
to put between the insulated wheels and the frame, and the motor, and the
trailing truck insulated wheel and the frame, and on the tender, *more*
electrical tape between the insulated wheels and the screws.....

You are finding problems that shouldn't ever show up.
They were designed to be workable WITHOUT all the extra insulation you
are mentioning. [Unless the thing has spent sometime wallowing in dirt
(kids sandbox maybe)]

Yeah, I would have thought... I have no idea what's going on here. At one
point, before I finished detailing it, it was running, and now I'm back to
pushing it, hoping that will break it in.
<snip>
Quite possible!!! Those motors, when running well, want close to 1/2 amp
of current. your usual 9v battery, while capable for a SHORT time,
doesn't like that sort of load, and the 9v will drop off (you may be
doing good to have 4.5v).

OOOg.

Ghu, if I'd known all this, I wouldn't have bought the damn thing off
eBay, but looked for discount retailers and bought a new kit.

But look at all you have learned!!!!
The next one will be a 'piece of cake'. [and it could easily be

Next? NEXT?! NFW, m'man. I have *no* intention of doing anything like this
again....

mark
.

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