From: Colin M Rush (chesnimnus@juno.com)
Date: Fri Jul 23 2004 - 09:28:11 PDT
For those that do not already know, I have the care of an IHC M-5H-6.
After spending 4 days driving it around several weeks ago, we have
decided that a 12-volt conversion is in order. 6-volt works great when
it is first started, but after if gets hot and tight, it takes about 30
to 40 tries before the engine cranks over enough to catch. We jumped it
once or twice with a 12V battery, and it popped right off. When
researching this for a 1941 Chev truck I was working on, I had asked
around several years ago at a local shop called Willamette Electric that
rebuilds generators and alternators and starters (they are now out of
business, thank you NAFTA), and they had told me that the generators and
starters were built heavy enough that they could withstand being used in
a 12V system. We also will need to rewire it, since the old wiring has
been cobbled up and is painted over with Navy surplus paint and all of
the color codes are gone. Anyway, I would like to keep it looking
original if possible. One thing that I am worried about is the voltage
regulator. It is a large Delco unit, with a removeable aluminum can held
on with two thumbscrews. Can that work with 12 volts? If not, is there
another one that looks the same from a newer application that I can
install? Again, I would like it to look 'right'. If not, I may just
install one of the more typical 'black box' regulators like the passenger
cars and trucks used up into the early 1970s, and put that inside the
larger aluminum can of the old box. If anyone has any input on this, I
would appreciate hearing it. Also, does anyone have any suggestions for
a solid-state version of one of these that will work?
Also, the same truck is a positive ground vehicle. I had heard
that this was a bad thing on some newer aluminum-bodied vehicles, causing
corrosion. Is this something I need to change, or should I just not
worry about it?
-Colin Rush
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