[NSRCA-discussion] Hacker gearbox

Fri Jun 2 06:32:01 AKDT 2006

I am not into the big electric stuff but I just had one of those fleeting
thoughts.
If the gear case is sealed so the fluids or grease wont come out then the
heavy oil that is recommend should work just fine.   AS long as there is
enough in the case for the planetarys to be immersed in.  Much like the
gears in the rear end of a car.
Could you not drill a small hole and tapped for a small screw in the bottom
of the gear case to drain the oil and one on top to fill?  You could flush
the system with clean oil and refill.  Would solve the problem of having to
dissasemble every time.
BWDIK (but what do I know)

Wayne G

----- Original Message ----- 
From: "Richard Strickland" <richard.s at allied-callaway.com>
To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
Sent: Friday, June 02, 2006 6:43 AM
Subject: Re: [NSRCA-discussion] Hacker gearbox

> Personally, I can't see where that crap would have much staying power-no
> 'body'.  Even the instructions show something that is more like grease.
> They may use that stuff for the motor bearings-but I can't see using it in
> the box.  IMHO.
> RS
>
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org]  On Behalf Of MKMSG
> Sent: Thursday, June 01, 2006 6:10 PM
> To: NSRCA Mailing List; patternrules at earthlink.net
> Subject: Re: [NSRCA-discussion] Hacker gearbox
>
> I apologize if I'm repeating information which has already been
> provided.....I don't recall the initial emails in this thread.  I'm sure
> there are a variety of high temp, high pressure lubricants which would
> work
> well in the Hacker gear box.  As a matter of reference, the oil recently
> provided to me by Hacker was a transparent amber color and very
> thick.....like honey, but it wasn't grease.....i.e., it was an oil which
> did
> flow, but very, very slowly.  Last night I took apart a Hacker C50 12XL
> which had around 70 flights on it and while the lubricant was black, the
> gears and bearings all appeared to be in good condition.  The motor is now
> re-lubed and reassembled.  If any needs lubricant for a Hacker gearbox,
> just
> contact Hacker USA and they'll send you some for free.
>
> Mike Moritko
> ----- Original Message -----
> From: "Verne Koester" <verne at twmi.rr.com>
> To: <patternrules at earthlink.net>; "NSRCA Mailing List"
> <nsrca-discussion at lists.nsrca.org>
> Sent: Thursday, June 01, 2006 4:54 PM
> Subject: Re: [NSRCA-discussion] Hacker gearbox
>
>
>> All of the bearings in the Hacker gearbox are sealed except for the three
>> planetary gears that have needle (not ball) bearings. I doubt those are
>> available sealed and I'm not sure if a needle bearing CAN be sealed
>> anyway.
>> My guess is that it can't.
>>
>> Verne
>>
>>
>> ----- Original Message -----
>> From: "Steven Maxwell" <patternrules at earthlink.net>
>> To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
>> Sent: Wednesday, May 31, 2006 12:42 AM
>> Subject: Re: [NSRCA-discussion] Hacker gearbox
>>
>>
>>> Verne have you looked for sealed bearing for the Hacker, I think you
>>> have
>>> a good idea if we could find the sealed bearing needed to keep the oil
>>> in.
>>>
>>> Steven Maxwell
>>>
>>>
>>>
>>>
>>>> [Original Message]
>>>> From: Verne Koester <verne at twmi.rr.com>
>>>> To: NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>
>>>> Date: 5/31/2006 12:24:04 AM
>>>> Subject: Re: [NSRCA-discussion] Hacker gearbox
>>>>
>>>> Never saw any fuzzies from the pipe cleaners, but then, the ones I had
>>>> laying around were at least twenty years old. OTOH, my eyes are
>>> fifty-three
>>>> so I may have missed them anyway. After I've cleaned everything out, I
>>> blow
>>>> it all out real good with my air compressor because I DO see little
>>>> bits
>>> of
>>>> paper towel here and there.
>>>>
>>>> There's a big difference between the needle bearings in the planetaries
>>> and
>>>> the sealed bearings that the shaft runs in. We WANT to remove the old
>>> grease
>>>> in the planetaries. If we remove the grease in the sealed bearings,
>>> there's
>>>> no practical way to replace it. Personally, I wish the whole system was
>>> as
>>>> tight as our glow motors, because then we could run 90-weight gear oil
>>> and
>>>> not have anything to worry about for the whole season.
>>>>
>>>> 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 10:35 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
>>>> >> >> >> >
>>>> >> >> >>
>>>> >> >> >>
>>>> >> >>
>>>> >>
>>>> >>>>
>>> ------------------------------------------------------------------------
>>>> > -
>>>> >> > -
>>>> >> >> > ------
>>>> >> >> >>
>>>> >> >> >>
>>>> >> >> >> > _______________________________________________
>>>> >> >> >> > NSRCA-discussion mailing list
>>>> >> >> >> > NSRCA-discussion at lists.nsrca.org
>>>> >> >> >> > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>> >> >> >>
>>>> >> >> >> _______________________________________________
>>>> >> >> >> NSRCA-discussion mailing list
>>>> >> >> >> NSRCA-discussion at lists.nsrca.org
>>>> >> >> >> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>> >> >> >
>>>> >> >> > _______________________________________________
>>>> >> >> > NSRCA-discussion mailing list
>>>> >> >> > NSRCA-discussion at lists.nsrca.org
>>>> >> >> > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>> >> >> >
>>>> >> >>
>>>> >> >> _______________________________________________
>>>> >> >> NSRCA-discussion mailing list
>>>> >> >> NSRCA-discussion at lists.nsrca.org
>>>> >> >> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>> >> >
>>>> >> > _______________________________________________
>>>> >> > NSRCA-discussion mailing list
>>>> >> > NSRCA-discussion at lists.nsrca.org
>>>> >> > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>> >>
>>>> >> _______________________________________________
>>>> >> NSRCA-discussion mailing list
>>>> >> NSRCA-discussion at lists.nsrca.org
>>>> >> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>> >
>>>> > _______________________________________________
>>>> > NSRCA-discussion mailing list
>>>> > NSRCA-discussion at lists.nsrca.org
>>>> > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>>
>>>> _______________________________________________
>>>> NSRCA-discussion mailing list
>>>> NSRCA-discussion at lists.nsrca.org
>>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>
>>>
>>> _______________________________________________
>>> NSRCA-discussion mailing list
>>> NSRCA-discussion at lists.nsrca.org
>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>
>>
>> _______________________________________________
>> NSRCA-discussion mailing list
>> NSRCA-discussion at lists.nsrca.org
>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>
>
> _______________________________________________
> NSRCA-discussion mailing list
> NSRCA-discussion at lists.nsrca.org
> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>
>
>
> _______________________________________________
> NSRCA-discussion mailing list
> NSRCA-discussion at lists.nsrca.org
> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>