- This topic has 18 replies, 6 voices, and was last updated 1 year, 7 months ago by
.
-
Anyone ever had one of these little gems apart,
or have a parts manual?
I got this $15 treasure a few years ago at Tomahawk,
and just decided today to look at it.
I could not give it a “whirl” with a battery, as
there’s only one lead coming out of the motor, and
I think, worse yet, I only see one brush inside.I’m having trouble getting the motor removed from the
drive shaft, or even getting the top off, which holds the
brush(es).With all the screws remove (less the field bolts) the top
cover comes up about 1/4″ and refuses to go further,
and feels “springy”.After removing the prop, I was able to get the hole motor
to lift up about one inch, pulling the driveshaft cable
with it.
I’m afraid that if I try to pull it any further, the cable end
(that the prop attaches to) will get stuck in the curved
driveshaft tube, and that would be “very bad”!Any ideas how the driveshaft cable is attached to the motor end,
or what might be holding the top cap of the motor from coming off?Not sure what year this unit is, but looking at some photos, it
looks like it could even be from the 1950’s.Thanks!
Prepare to be boarded!
Went back out to the shop after tacos, and finally got the
unit all apart……. it wasn’t “pretty”, but at least I don’t
think I broke anything.
The upper armature ball bearing OD was stuck in the
top cap’s housing.I went ahead and pulled the driveshaft cable up through
the tube. The cable wasn’t stuck in the bottom of the
armature, but rather pinned to the shaft.Good news, there are two brushes, but rather than
being 180 degrees “opposite” each other, they are
90 degrees apart. I could not see the grounded brush
until it was all apart.
That said, I have no idea where a ground connection
from the battery “connects” to the motor. There is
an empty hole in the bottom cap of the motor, but
I see nothing inside where it might connect, nor
do I see any external lug to hook a cable to.
Hopefully someone will know, or have some good photos
showing the ground cable.
Prepare to be boarded!
I cleaned up some of the parts today, and did a few test with
the ohm meter.All the commutator sectors are good, i.e., none show “open”.
I have continuity through each field coil.
I tried testing the rheostat, but didn’t know what I was doing,
but I got all kinds of “whacky” readings with my auto sensing
ohm meter. My old analog was stable, but I still had no idea
what I was doing.Some of the internal wiring must be missing, as there’s no
way for current to get from the rheostat to the field coils.
There was a long “hot” wire with an alligator clip to hook
on the battery “positive”, I presume, going to the rheostat
terminal, but nothing from the rheostat to the field coils.I also thought that one of the two commutator brushes
should be grounded to the frame, but they both seem
to be insulated from it.I still haven’t figured out where the battery ground connection
may have been hooked up to this motor.
Prepare to be boarded!
- You must be logged in to reply to this topic.
