Over the weekend, I took a break from the hot outdoors and started to
watch an industrial type video on the construction of the NYC subway
cars. Near the end of the presentation they add the trucks and describe
in a very detailed manor, the traction motors. In that process the
axles are frozen and then inserted into the main gear. The warming of
the axle lets it expand for form a perfect bond that won't slip.
Obviously the mass of a 1:1 axle has a lot to do with it, but who knows.
This might be a solution to a problem most of us have had. Actually
this would be better addressed by NWSL and the importers. In another
way this is just another way where a tire is bonded to a driver in the
steam era, only extreme cold and warming is substituted for a ring of
fire and lot's of hammering.
I've been working on my two gray market GP-30's off and on for a few
years. Right now they are waiting for their time in the shops again. I
did a bang-up job on the paint and decaling but they won't be seen until
they run right. They have either slipping shafts or slipping gears.
Bob Werre
PhotoTraxx
[Attachment(s) <#TopText> from Bill Lane included below]
I have a Omnicon MP 2-8-0 in for some R&R. It has had a hard knock
life with the tender swapped out, masquerading as a poor NYC loco now.
For some reason the plastic coupling frequently slips on the motor
shaft, but not the tower input shaft. I don't know why because they
the same situation. I tried but could not get the coupling to slip on
the tower shaft. My fix has been ongoing for many years now in various
forms from tapping the plastic coupling to brass tube and nuts
soldered in place.
This latest version is solid round brass stock drilled out to the O D
of the plastic coupling. My new lathe made it all fun! (:->) I am
going to say the wall thickness is about .040 when I am done. Drill
have tap the whole thing for 2) 0-80 screws on shaft center - directly
across from each other. Crank it all up tight for a slip free operation.
Thank You,
Bill Lane
