[NSRCA-discussion] Hacker gearbox

Tue May 30 19:33:40 AKDT 2006

To clarify, when I said "lens cleaners" I was referring to the dry,
disposable lens towels you can get at places like Lens Crafters.

Also, I meant the "don't" leave fuzz behind.

Keith

----- Original Message ----- 
From: "Keith Black" <tkeithb at comcast.net>
To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
Sent: Tuesday, May 30, 2006 9:35 PM
Subject: Re: [NSRCA-discussion] Hacker gearbox

> Verne, as you point out the degreaser probably is not a problem with the
> three small gears with the roller bearings.
>
> The other comment I have, after doing the regreasing last night, is that
the
> pipe cleaners tend to leave little fuzzies all over the place. They do
work
> extremely well, but I had a lot of trouble getting everything fuzz free. I
> think the toothbrush sounds like a much better idea.
>
> I was also surprised that the Comp. instructions suggested Kleenex since
> they will certainly leave behind lots of small fuzz. I think the ideal
thing
> may be lens cleaners for glasses (the non-wetted type). Because these done
> leave fuzz behind.
>
> Keith Black
>
>
> ----- Original Message ----- 
> From: "Verne Koester" <verne at twmi.rr.com>
> To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
> Sent: Tuesday, May 30, 2006 4:00 PM
> Subject: Re: [NSRCA-discussion] Hacker gearbox
>
>
> > When the C50 first came out, there were no directions available. The
> > directions you're seeing come from the competition version which has
only
> > recently been available to those of us possessing normal flying skills.
> >
> > I still use wax and grease remover to clean out the old grease from the
> > planetaries once they've been taken out of the gearbox. I now use paper
> > towels, pipe cleaners, and old toothbrushes for everything else. Doesn't
> > clean as good as the liquid, but at least nothing harmful is getting
into
> > the sealed bearings. The planetaries are entirely different as you know.
> > They have unsealed needle bearing and need a thorough cleaning and
> > repacking.
> >
> > Verne
> >
> >
> > ----- Original Message ----- 
> > From: "Keith Black" <tkeithb at comcast.net>
> > To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
> > Sent: Tuesday, May 30, 2006 12:36 AM
> > Subject: Re: [NSRCA-discussion] Hacker gearbox
> >
> >
> > > Verne, looking back over your earlier message and the Hacker
directions
> > > for
> > > the Comp motor I'm a bit surprised you use the PPG wax and grease
> remover.
> > > The directions say "Don't use chemical cleaners! These will destroy
the
> > > grease in the ball bearings of the output shaft!"
> > >
> > > Did you hear from Hacker that it would be safe to use the PPG
degreaser,
> > > prior experience, etc.?
> > >
> > > Please elaborate.
> > >
> > > Thanks,
> > > Keith Black
> > >
> > > ----- Original Message ----- 
> > > From: "Verne Koester" <verne at twmi.rr.com>
> > > To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
> > > Sent: Monday, May 29, 2006 10:32 PM
> > > Subject: Re: [NSRCA-discussion] Hacker gearbox
> > >
> > >
> > >> Keith,
> > >> Our experience is that you don't need loctite as long as you use a
> strap
> > >> wrench to tighten the gear box and get good torque on the set screws.
> > >> Loctite on the threads of the gear box to motor make it a bear to get
> off
> > >> again. I helped Andrew grease the gearbox on his standard C50 last
> summer
> > > 4
> > >> or 5 times and we never used loctite and it never showed any signs of
> > >> loosening up. Of course, if your gear box spins itself off the motor,
> I'm
> > >> just gonna say you didn't get it tight enough.....   ;>)
> > >>
> > >> Verne
> > >>
> > >>
> > >> ----- Original Message ----- 
> > >> From: "Keith Black" <tkeithb at comcast.net>
> > >> To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
> > >> Sent: Monday, May 29, 2006 11:12 PM
> > >> Subject: Re: [NSRCA-discussion] Hacker gearbox
> > >>
> > >>
> > >> > I'm in the process of doing a Lube Job to my C50 Standard Hacker.
Is
> > >> > loctite
> > >> > required when putting the STD C50 back together (I assume it is
based
> > >> > on
> > >> > comments in Verne's post)?
> > >> >
> > >> > If so, where is the loctite used, threads on gearbox or threads on
> set
> > >> > screws?
> > >> >
> > >> > What loctite is used? 222 (low-strength) or medium?
> > >> >
> > >> > Thanks,
> > >> > Keith Black
> > >> >
> > >> > ----- Original Message ----- 
> > >> > From: "Verne Koester" <verne at twmi.rr.com>
> > >> > To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
> > >> > Sent: Sunday, May 21, 2006 12:20 PM
> > >> > Subject: Re: [NSRCA-discussion] Hacker gearbox
> > >> >
> > >> >
> > >> >> Stuart,
> > >> >> The separate washer is unique to the comp motor. BTW, the gears
and
> > >> >> all
> > >> > the
> > >> >> stuff inside is the same. The biggest advantage to the comp motor
is
> > > the
> > >> >> brake built in to the controller and the fan between the gearbox
and
> > > the
> > >> >> motor the blows air through the windings. There's no power
> > >> >> differences.
> > >> >>
> > >> >> Back to yours. Without knowing what grease the previous owner
used,
> > > it's
> > >> >> nearly impossible to analyze it. Looking at your photo, the grease
> > >> >> appears
> > >> >> wet and shiny which is good. When it turns into a dull,
metal-laden
> > >> >> paste,
> > >> >> bad things happen. I suspect you're going to see some darkness
> > > regardless
> > >> > of
> > >> >> the grease, at least until the gears wear in.  I'd suggest
following
> > > the
> > >> >> directions you downloaded which I'm assuming came from the comp
> > > version.
> > >> >> Clean all the existing grease out and make sure you don't lose the
> > > little
> > >> >> bitty washers under each of the three planetary gears.
> > >> >>
> > >> >> If you take the shaft out, make sure to keep track of those
washers
> as
> > >> > well.
> > >> >> There's three of them and each one is different and needs to be in
> the
> > >> > right
> > >> >> place.
> > >> >>
> > >> >> BTW, using a syringe and your finger to pack the bearing in the
> > >> > planetaries
> > >> >> as suggested in the comp directions works really well. The
pressure
> > >> > created
> > >> >> by that technique forces lube in behind the needles in those
little
> > >> >> bearings. I use PPG wax and grease remover and a pipe cleaner to
> clean
> > >> >> the
> > >> >> planetaries and bearings prior to repacking them.
> > >> >>
> > >> >> Finally, make sure the planetaries are placed back in as described
> in
> > > the
> > >> >> instructions. One end has a bevel ground in and it needs to be
> > >> >> oriented
> > >> >> properly. The bevel is on the side where printing is stamped into
> the
> > >> >> face
> > >> >> of the needle bearings and is the side you see in your attached
> photo.
> > >> >>
> > >> >> Hope this helps.
> > >> >> Verne
> > >> >>
> > >> >>
> > >> >> ----- Original Message ----- 
> > >> >> From: "Stuart Chale" <schale at optonline.net>
> > >> >> To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
> > >> >> Sent: Sunday, May 21, 2006 8:42 AM
> > >> >> Subject: Re: [NSRCA-discussion] Hacker gearbox
> > >> >>
> > >> >>
> > >> >> > Now for the question.
> > >> >> >
> > >> >> > Attached is a picture of my motor open.  Standard C50 not the
Comp
> > >> >> > version.
> > >> >> > The washer over the planetary gears is different from the
pictures
> > >> >> > in
> > >> > the
> > >> >> > re-greasing directions.  There is a washer press fit into the
> cover
> > >> >> > that
> > >> >> > is
> > >> >> > not as large as the one pictured in the directions.  For those
of
> > >> >> > you
> > >> > who
> > >> >> > have opened your motors, is this normal or am I missing the
larger
> > >> > washer?
> > >> >> >
> > >> >> >>From the pictures it appears that the grease is white.  Was any
> > > version
> > >> > of
> > >> >> > it dark?  Or does it get dark after running?  The grease in my
> motor
> > > is
> > >> >> > pretty dark. The motor was bought second hand supposedly un-run
> but
> > >> >> > I
> > >> > get
> > >> >> > the feeling that is not the case.
> > >> >> >
> > >> >> > Thanks,
> > >> >> > Stuart
> > >> >> >
> > >> >>
> > >> >>
> > >>
> >
>
>>> ------------------------------------------------------------------------
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> > > -
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> > >> >>
> > >> >>
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