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Re: (ET) 24V relays

Chris,
   Here's a comparison of motors..... 

        Ref     Model/ID  #HP/Size      Volts   Amps    RPM     If
Rf      Winding Mounting        Enclosure       Shaft
        

Drive E15       5BCY56RA6       1       36      25      2250    1.9/.5
Stab Shunt      foot    TE      round w/key for pulley
        E20     5BCY56TA2               1.2     36      30      2250
1.9/.5          Stab Shunt      foot    TE      round w/key for pulley
        E12     5BCE56KB5B      1.5     36      37      3500    2.25
16      Stab Shunt      foot    TE      round w/key for pulley
        

Mower7.5" tall  5BPA34NAA7  datecode EFN        0.6     36      15
4000    none            PM      flange  TE      round with end tapped
hole for blade
        6.5" tall       Bosch/Danaher  BA3816-815-1     0.6     36
15      3200    none            PM      flange  TE      round with end
tapped hole for blade

  It's copied from an Excel spreadsheet so the columns may not line up
right but you can get ratings from it.  Mower motors included.
I have an E15 and E20 and not sure there is any noticeable difference.

...Walt

-----Original Message-----
From: Christopher Zach [mailto:cz alembic crystel com] 
Sent: Tuesday, June 28, 2011 9:45 AM
To: elec-trak cosmos phy tufts edu
Subject: Re: (ET) 24V relays

Or you could just get a 36 volt relay. I have those big ones with the
plastic caps; you can take out the bottom screw and put in a sheet metal
screw then mount it up in the tractor. So far I have not had one burn up
(although I have seen them with burned contacts in the E15 junk parts
box that came with the tractor).

So yes, even a really good relay can be eaten on an E15. The question
remains as to if the mov can protect them; once I get my battery box
I'll drive the E15 for a year and find out.

Speaking of which, how much less power is there in an E15? I'm thinking
of parking it on the driveway with the snowblower attached this winter
instead of the poor little E20 (who likes the nice dry shed). Can it do
the "blow 2.5 feet of thick wet snow) with chains and weights? Or will
the motor overload (the E20 can do it, but man it pulls a lot of power).

Chris

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