Re: (ET) Fwd: Golf Cart Conversion

[rodhower ameritech net]

Most of the old golf carts had series motors.
When I was at GE back in 94-95 we started designing in Sepex motors
and controls at all of the major golf cart mfgs (EzGo, Club Car, Yamaha 
etc).  There was several reasons for doing this.
1) Could limit the top speed by increasing voltage on the field.  This 
would keep the golf cart from going too fast on a hill (there was an 
encoder magnet on the motor and a hall sensor to detect RPM).
2) Prevent roll-away.  If the accelerator was not being pressed and the 
golf cart started to roll, it would limit top speed to 2 MPH.

Many of the new carts (high end) are starting to switch to AC induction 
motors and controls.
Rod


--- On Wed, 11/12/08, RJ Kanary <rjkanary nauticom net> wrote:

> From: RJ Kanary <rjkanary nauticom net>
> Subject: Re: (ET) Fwd:  Golf Cart Conversion
> To: "Tim Humphrey" <hump evgrin com>
> Cc: elec-trak cosmos phy tufts edu
> Date: Wednesday, November 12, 2008, 12:39 PM
> I thought golf cart motors were series wound.
> 
> RJ
> 
> 
> Tim Humphrey wrote:
> > Wow, it looks like it's going to be one of those
> days...
> >  
> > 2 months ago I picked up a golf cart project. One of
> my intended plans 
> > are an ET like front mount so I can use all of my ET
> attachments on it.
> >  
> > I'm not worried about the motor's duty cycle,
> the ET's are basically 
> > just golf cart motors anyway.
> >  
> > Then as I'm writing this Jim posts a link to
> Whispermow, which 
> > according to their website is located about 15 minutes
> away. Guess I 
> > need to go have a look.
> >  
> > -- 
> > Stay Charged!
> > Hump
> >
> > The most important substance needed to make a
> successful project is 
> > the "glue" that makes you stick to it! --
> Lee A. Hart
> > .....still looking for a source for that glue, any
> ideas?
> >
> >
> >
> > -----Original Message-----
> > From: elec-trak-bounces cosmos phy tufts edu 
> > <mailto:elec-trak-bounces cosmos phy tufts edu>
> > [mailto:elec-trak-bounces cosmos phy tufts edu 
> > <mailto:elec-trak-bounces cosmos phy tufts edu>]
> On Behalf Of RJ Kanary
> > Sent: Tuesday, November 11, 2008 6:58 PM
> > To: Robert C McLane
> > Cc: elec-trak cosmos phy tufts edu
> <mailto:elec-trak cosmos phy tufts edu>
> > Subject: Re: (ET) Golf Cart Conversion
> >
> >      I'd be wondering about the duty cycle of the
> motor. After all golf
> > course use doesn't pose much of a long term
> load.How far is it from tee
> > to tee? <G>
> >
> > RJ
> >
> >
> > Robert C McLane wrote:
> >
> >        Has anyone out there in Elec-trak land
> attempted or at least
> > thought through the idea of converting an electric
> golf cart to an
> > electric riding lawn mower?
> >        At first blush it would appear (at least to the
> uninformed) to
> > be as simple as adding the necessary support structure
> to the front end
> > to guide/push an Elec-trak mower deck and to modify
> the available
> > electronics with the necessary PTO switch/contactor,
> etc. wired directly
> > to the battery pack.
> >
> >        I've seen some golf carts out there with
> all terrain tires, lift
> > kits etc. which suggest there is sufficient power
> available for
> > navigating off road terrain which shouldn't be
> much more demanding that
> > the average gentrified, residential lawn.
> >
> >        Am I missing some electrical/mechanical
> obstacle or
> > incompatibility here in thinking this may be a
> practical thing (in the
> > face of an aging but still plugging along 1973 E-15)?
> >
> >
> >
> >        Bob McLane
> >        Colchester, VT
> >
> >
> >
> https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak
> >
> >
> >
> >
> >
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