Re: (ET) Large Frame Mower Deck

["RJ Kanary" <rjkanary nauticom net>]

     The entire 'tip', in your illustration should be sharpened. I have
sharpened, or had sharpened, blades that only had one half to three 
quarters
on an inch of thickness left.The big issue is maintaining balance. It seems
to be more challenging, the thinner and lighter the blades become.
   I have had some sharpeners also attack the 'bent' portion of the blade. 
I
have been told that this was to achieve the final balance, without
sacrificing any more of the cutting end, than was necessary.


RJ Kanary  Bandi Bros. Inc.
Member TRNi  Since 1998
ASE® Certified Master Auto Technician

rjkanary nauticom net

----- Original Message ----- 
From: "Andrew Poush" <agp vt edu>
To: "Elec-Trak List" <elec-trak cosmos phy tufts edu>
Sent: Sunday, July 06, 2003 4:43 PM
Subject: Re: (ET) Large Frame Mower Deck


> I am just about convinced to remove the baffles.  I had two motors cut
> out on me yesterday (which has never happened before).  I believe that
> it was because I was cutting 10" grass and I have to reverse back over
> the cut again to finish the job.  One of the overloaded motors reset
> and works fine now.  The other has a melted wire next to the circuit
> breaker.  I'm replacing the breaker and the wire.  But without the
> baffles, this would never have happened.
>
> Another disadvantage of all this reverse mowing is that it can't be
> done after dusk, since the lights shine forward.
>
> The blade arcs do overlap when the mower travels straight forward or
> reverse.  But I can see how during turning the arcs might not overlap
> anymore between the two motors on the inside of the turn.  Randy
> mentioned that each blade should cut at a 90 degree angle to the arc.
> Mine definitely are slanted at the ends in a way that would push the
> grass off the end of the blade.  I already had the blades sharpened
> once this year.
>
> The blades have tips that run closer to the ground than the shaft.
> Side view:
> __/-----------------------\__
> tip           shaft            tip
>
> In the bottom view, the width of the blades at the ends is between 1/4
> to 1/2 less than the shafts.  Do these blades have the potential to
> last for a few more years if I have them sharpened again to the 90
> degree angle?  Does it matter if only the tips are sharpened or also
> the part of the shaft that bends down just before the tip?  At what
> point would these blades be considered worn out?  I'm guessing mine are
> pretty close (if not already there).
>
> Thanks again.  You guys have been a great help so far.
>
> Sincerely,
> Andy
> Roanoke VA
>
>
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