[NSRCA-discussion] Hacker gearbox

[Verne Koester]

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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