On Jul 7, 2021, at 4:36 PM, Philip Hubbard <philiphbbrd gmail com>
wrote:
After rewiring 8 tractors with Curtis 1204 PWMs, I wouldn't consider
repairing the
old wiring system. Once I experienced the stepless speeds and the
increased battery life - no resistors up front - I will never go
back. And it is surprisingly easy to do! Phil Hubbard
On Wed, Jul 7, 2021 at 12:00 PM
<elec-trak-request cosmos phy tufts edu
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Today's Topics:
1. E-15 card 1 help (RICHARD WRIDE)
2. Re: E-15 card 1 help (Chris Zach)
3. Re: E-15 card 1 help (Jim Coate)
4. Re: E-15 card 1 help (Larry Chace)
----------------------------------------------------------------------
Message: 1
Date: Tue, 6 Jul 2021 20:07:27 -0400 (EDT)
From: RICHARD WRIDE <ridevolfd cox net <mailto:ridevolfd cox net>>
To: elec-trak cosmos phy tufts edu
<mailto:elec-trak cosmos phy tufts edu>
Subject: (ET) E-15 card 1 help
Message-ID: <781242772 330048 1625616447990 myemail cox net
<mailto:781242772 330048 1625616447990 myemail cox net>>
Content-Type: text/plain; charset="utf-8"
Getting started bringing an E-15 that's sat for probably 30 years.
Need to replace capacitors, CRs & SCRs, plus a transistor (one
legs broken off). does anyone have a parts list for card 1 that
describes components so I can find replacements? Also a good
wiring diagram, had some rodents chew some wires.
VR
Rich "EZ"
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Message: 2
Date: Wed, 7 Jul 2021 08:29:41 -0400
From: Chris Zach <cz alembic crystel com
<mailto:cz alembic crystel com>>
To: elec-trak cosmos phy tufts edu
<mailto:elec-trak cosmos phy tufts edu>
Subject: Re: (ET) E-15 card 1 help
Message-ID:
<7ec5b1b6-8102-b3a4-8144-169930a2cbfc alembic crystel com
<mailto:7ec5b1b6-8102-b3a4-8144-169930a2cbfc alembic crystel com>>
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I believe all of that is in the Owner's manual. Download a copy
from one
of the Elec-Trak sites and get rolling. I do believe though that
you
should check the capacitors first: Most of them were simple delay
caps
and the electrolytics were made before the garbage quality
capacitors
from the 1980's hit the market. They just might be good (all caps
on my
E15 board are fine enough).
Chris
On 7/6/2021 8:07 PM, RICHARD WRIDE wrote:
>
> Getting started bringing an E-15 that's sat for probably 30
years.
> Need to replace capacitors, CRs & SCRs, plus a transistor (one
legs
> broken off). does anyone have a parts list for card 1 that
describes
> components so I can find replacements? Also a good wiring
diagram, had
> some rodents chew some wires.
>
> VR
>
> Rich "EZ"
>
>
> _______________________________________________
> Elec-trak mailing list
> Elec-trak cosmos phy tufts edu
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------------------------------
Message: 3
Date: Wed, 07 Jul 2021 07:09:08 -0600
From: Jim Coate <lists freerangeelectric com
<mailto:lists freerangeelectric com>>
To: RICHARD WRIDE <ridevolfd cox net <mailto:ridevolfd cox net>>
Cc: elec-trak cosmos phy tufts edu
<mailto:elec-trak cosmos phy tufts edu>
Subject: Re: (ET) E-15 card 1 help
Message-ID:
<431fa5e3b96d99b4de890e633a0981ae freerangeelectric com
<mailto:431fa5e3b96d99b4de890e633a0981ae freerangeelectric com>>
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The Card 1 schematic is in the Homeowners Service Manual. I have
SCR's
and the various capacitors listed on my web store along with
complete
new cards. Since I build those I have every component involved and
could
get you whatever transistor, etc is needed.
http://freerangeelectric.com/index.php?main_page=advanced_search_result&keyword=card+1&search_in_description=1&categories_id=17&inc_subcat=1&manufacturers_id=&pfrom=&pto=&dfrom=&dto=&x=0&y=0
<http://freerangeelectric.com/index.php?main_page=advanced_search_result&keyword=card+1&search_in_description=1&categories_id=17&inc_subcat=1&manufacturers_id=&pfrom=&pto=&dfrom=&dto=&x=0&y=0>
Also edge connector terminals (someday I'll put a picture up!):
http://freerangeelectric.com/index.php?main_page=product_info&products_id=285
<http://freerangeelectric.com/index.php?main_page=product_info&products_id=285>
Note that I generally don't bother to repair old cards.... at a
minimum
all new capacitors as the old ones are getting dried out by now,
diagnose and repair other bad components, and more often than not
there
is mechanical damage to the card along the edge connector and/or
from
previous repairs.
On 07/06/2021 6:07 pm, RICHARD WRIDE wrote:
> Getting started bringing an E-15 that's sat for probably 30
years.
> Need to replace capacitors, CRs & SCRs, plus a transistor (one
legs
> broken off). does anyone have a parts list for card 1 that
describes
> components so I can find replacements? Also a good wiring
diagram, had
> some rodents chew some wires.
>
------------------------------
Message: 4
Date: Wed, 7 Jul 2021 10:56:50 -0400
From: Larry Chace <RLC1 etnainstruments com
<mailto:RLC1 etnainstruments com>>
To: elec-trak cosmos phy tufts edu
<mailto:elec-trak cosmos phy tufts edu>
Subject: Re: (ET) E-15 card 1 help
Message-ID: <p05210601dd0b7008b2cf@[192.168.0.93]>
Content-Type: text/plain; charset="us-ascii" ; format="flowed"
Another potential difficulty is that at least some Card #1 were
dipped in a vat of very durable varnish or other such coating,
making
it extra hard to de-solder parts that you want to replace.
Jim's new cards are a good way to go, quicker and more reliable.
(At one point Steve Shore asked me to test a batch of #1 cards and
repair the bad ones if possible. It was a lot of work; new cards
would be much less effort!)
Larry Chace, Ithaca, NY I-5 and E15
------------------------------
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