Re: (ET) mower blades

[Barry Woods <barry woods wright edu>]

I've found a wide range from 1 1/2" to 5/8".

Barry



----- Original Message ----- 
From: "Humphrey, Timothy" <HumphreyT neads ang af mil>
To: <elec-trak cosmos phy tufts edu>
Sent: Monday, May 19, 2003 10:18 AM
Subject: RE: (ET) mower blades


> How big is the center hole on the blades you did find. Is it something
that
> you could put a bushing on(in). If it is not a common size bushing, I 
> have
a
> friend that will make them.
>
>
>
> > -----Original Message-----
> > From: Barry Woods [mailto:barry woods wright edu]
> > Sent: Monday, May 19, 2003 10:06 AM
> > To: elec-trak cosmos phy tufts edu
> > Subject: (ET) mower blades
> >
> >
> > Has anyone had any luck in finding a set of high-lift blades
> > to fit the 42"
> > front mount mowing deck?  The blades I ordered from  Bill
> > Gunn have very
> > little lift and the appearance of the lawn after cutting,
> > even with freshly
> > sharpened blades, is disappointing.
> >
> > If my measurements are correct, the blades look to be 14 1/2"
> > in length and
> > the center hole seems to be about 5/16".  I can find 14 1/2"
> > blades but
> > nothing with a center hole that small.
> >
> > I tried mounting two blades on each motor, at right angles
> > with the fiber
> > washer between them. It did give somewhat better lift and did
> > not seem to
> > draw anymore current, but no matter how hard I tighten them
> > they will not
> > stay perpendicular to each other and one will swing around
> > and stop directly
> > under the other after mowing  row or two and them the
> > advantage of two is
> > lost.
> >
> > Gatorblades make a mulching blade that does not require a
> > closed deck.  I
> > figure this would stop some of the back pressure and not draw as much
> > current as a regular mulching blade would  with the discharge
> > chute blocked
> > off.  I contacted them (gatorblade.com), but they said they
> > do not have that
> > would fit.
> >
> > Any suggestions?
> >
> > Thanks,
> > Barry
> >
> >
> > E-15, Dayton, OH
> >
> > ----- Original Message ----- 
> > From: "Christopher Zach" <czach computer org>
> > To: <wombat dssinternet net>;
> > <elec-trak cosmos phy tufts edu>; "Dave &
> > Debbie Barden" <daveb seanet com>
> > Sent: Monday, May 19, 2003 9:44 AM
> > Subject: Re: (ET) ryobi
> >
> >
> > > Well, the Prizm's running voltage is 300 volts at 52
> > amp-hours. Thus the
> > > batteries are run in two strings of 25, connected at the ends by
> > contactors.
> > >
> > > Pretty high voltage. However the car can *move* since the
> > batteries can
> > > deliver 4C without sagging too much (200amp max draw at 300
> > volts is a lot
> > > of power).
> > >
> > > The Hawker Genesis batteries are probably the best in the
> > business. They
> > > will crank a V-8 motor without trouble, and I have used one
> > on my garden
> > > tractor for a year with no trouble. I think the max current
> > you can draw
> > on
> > > them is something like a thousand amps. And they weigh only
> > 24 pounds
> > each.
> > > Small, compact, high power.
> > >
> > > I am thinking of wiring up three of the old ones together
> > and seeing how
> > far
> > > they take the Elec-trak (loaded with 6 volt batteries of
> > course :-) Based
> > on
> > > my calculations, six of them (two strings of 3) should
> > provide enough
> > power
> > > to run the tractor for 30 minutes or so.
> > >
> > > Chris
> > >
> > >
> > >
> > > ----- Original Message ----- 
> > > From: "Dave & Debbie Barden" <daveb seanet com>
> > > To: <czach computer org>; <wombat dssinternet net>;
> > > <elec-trak cosmos phy tufts edu>
> > > Sent: Monday, May 19, 2003 2:26 AM
> > > Subject: Re: (ET) ryobi
> > >
> > >
> > > > 54?!  how did you wire them, what's the pack voltage?
> > > >
> > > > this wkend I just got a sears cordless mower running that
> > I rescued from
> > > the
> > > > dump.  The 24v charger came in the mail friday, the 12v
> > sealed batts
> > > measured
> > > > 2.2volts each!  but after 2 days on the charger came up
> > to 12.7v.  I ran
> > > it but
> > > > only for a coupla seconds.  my charger did the same thing
> > only the green
> > > > "ready" led ever lit up.  the red "charging" led never
> > has come on.
> > > >
> > > > there's not much grass here in my neighborhood here in
> > town to test it
> > on
> > > so
> > > > I'll have to wait till next wkend when I bring it the
> > farm.  I plan to
> > use
> > > it
> > > > for the lawn in close to the house and flower beds and
> > the E-trac on the
> > > other
> > > > 1/2 ac of lawn.
> > > >
> > > > dave
> > > >
> > > > > Could also be that after sitting for years the battery is fully
> > > sulfated.
> > > > >
> > > > > If it's a 12 volt 26amp/hour battery then they cost $50 new from
> > > > > www.surplusev.com. I just bought 54 of them for my electric car;
> > really
> > > nice
> > > > > batteries. Have been thinking of trying to run the E20
> > with a set of
> > six
> > > of
> > > > > them :-)
> > > > >
> > > > > Chris
> > > > >
> > > > > ----- Original Message ----- 
> > > > > From: "Neil Dennis" <wombat dssinternet net>
> > > > > To: "Elec-trak" <elec-trak cosmos phy tufts edu>
> > > > > Sent: Monday, May 19, 2003 8:42 AM
> > > > > Subject: (ET) ryobi
> > > > >
> > > > >
> > > > > > I've got probably the same model, the battery
> > indicated "charged'
> > > after
> > > > > > running the charger for several hours but wouldn't
> > start the mower.
> > > If
> > > > > > I remember, I found an open connection somewhere,
> > after fixing, the
> > > > > > mower would run with the charger plugged in but about
> > a minute on
> > the
> > > > > > batt.
> > > > > >
> > > > > > It sits in my garage, too cheap to try and find a new
> > batt, wonder
> > > what
> > > > > > they cost.
> > > > > >
> > > > > > wombat
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> >
> >
>