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RE: (ET) Help



I've been on vacation, and although I have read many good suggestions, 
I would like to add one.

First off, 39V is too low.  39 is good for mowing 15 minutes.

Second, SEVERAL of the chargers I have got charge to (drum roll!) 39V!  
Why?  Very leaky capacitor on the charger.  To test this theory without 
cost or obligation, lift the charger cover (disconnect switch to OPEN 
first 
please) and pull one of the 'fast-tabs' (push connectors) off the cap with 
pliers and wrap it with a few turns of electric tape.  Replace the cover.  
Charge for several hours.  If you have 42V or so the electrolytic was very 
leaky.  Fixing it will use less power from your utility.  Not fixing it 
will 
cost you nothing but charging time (i.e., leave the cap disconnected...).

The cap is there to try and match the phase of the current and voltage on 
110V side.  It's much like a 'motor-run' cap on a electric motor.

Larry Elie



-----Original Message-----
From: ThompsonG DFO-MPO GC CA [mailto:ThompsonG DFO-MPO GC CA]
Sent: Monday, June 18, 2001 10:54 AM
To: elec-trak cosmos phy tufts edu
Subject: (ET) Help 


        > Hi
        >
        > I worked all last night on the tractor and I think I've  got big
problems.
        > Hopefully, you can steer me in the right direction or a least 
stop
me from
        > doing something really dump.
        >
        > Here What I've got so far.
        >
        > 1.) The Power level show Green when I turn on the Main Power
Switch. I've
        > checked the voltage with a meter and I have 36V
        > 2) When I turn on the switch power, and the key, activate the 
seat
switch, Both Relays 2RTN and 1RTN
        > close with a nice solid click
        >
        > Then it get's bad
        >
        > When I push the seat switch the Power Use meter goes into the
yellow.
        > Then when I move the speed controller to forward or reverse 2RTN
OPENS and > the Power Use meter goes even further into the Yellow.
        >
        > I tried this with the motor armature power wires (the big heavy
black wire
        > on the brass studs) disconnected from the motor and got the same
response.
        > But if I disconnect the breaker leads plug  and the Centripetal
switch plug,
        > the tractor is dead.
        >
        > I also checked each of the diodes with my OHM meter and they seem
to be OK,
        > 0 ohms in one direction Infinite resistance in the other.
        >
        > I am starting to think it' s a motor problem, but I am open to 
any
        > suggestions at this point.
        >
        > Any Ideas
        > Thanks Again
        >
        >
        >
        > Geof Thompson B. Sc.
        > Data Management Engineer
        > Canadian Hydrographic Service
        > Central and Arctic Region
        > 867 Lakeshore Road
        > Burlington, Ontario
        > Canada. L7R 4A6
        >
        > Phone (905) 336-4698
        > Fax (905) 336-8916
        > E-mail Thompsong dfo-mpo gc ca <mailto:Thompsong dfo-mpo gc ca> 

Geof Thompson B. Sc.
Data Management Engineer
Canadian Hydrographic Service
Central and Arctic Region
867 Lakeshore Road 
Burlington, Ontario
Canada. L7R 4A6 


Phone (905) 336-4698
Fax (905) 336-8916
E-mail Thompsong dfo-mpo gc ca