Points repair?

[Buccaneer]

The fixed half of one set of points on my A-80 Johnson
is wore down right to the nut as you can see
in the photo.

I remember years ago reading that someone used
a piece of nickel welding rod for a new contact,
and silver soldered on.

Just wondering if anyone has tried something similar,
and how it turned out?

Not sure how hard points are to find for the A-80
or how many Johnson outboards in the 1936 era
used the same set, so if anyone can enlighten
me with that information or a part number for
the point set, I’d be happy.
Thanks!

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Prepare to be boarded!

[stanley]

https://web.archive.org/web/20101213070 … 75-34.html

[Mumbles]

Those look to be common points used in oodles and oodles of motors. You shouldn’t have any problem finding them or just the piece you need.

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[Buccaneer]

Thanks for the article and points specs!
I’ve never heard of silver solder sheets
or granular silver solder with flux. I do
have a roll of silver solder though.

Don’t believe I’ve ever seen that list of
points either. I don’t see "A-80" listed,
but assuming they’re the same as the A-75
listed, I might have some on a parts motor.

I did find some Ford Model A points in my
parts box today. They have a "screw type,
fixed half", point set as well, but it’s not
quite as long, and it’s a little fatter,
but I think it would work using different
size fiber washers.

Will did through my 5 hp Johnson parts from
that era and see if they’re the same.
Thanks!

Prepare to be boarded!

[Mumbles]

quote Buccaneer:

I don’t see “A-80” listed

P/N 72-736.

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[billy-j]

That’s an interesting idea to silver solder a new point contact in place. But instead of using nickle welding rod I think I would try a tungsten contact from a donor set of points. A carbide masonry drill tip is tungsten carbide and it brazes with brass to steel I don’t see why you could not affix a genuine contact with silver. Necessity is the mother of invention. Bill,

[Buccaneer]

Mumbles, One would have thought A-80 would be found after
A-75 in the list. I can’t see stuff on the grocery store shelf
when it’s right in front of me either!

Bill, Good idea with the tungsten carbide.
I’ll have to experiment sometime.

I did not find any un-used points from my
LT & DT Johnson projects, so I’m going to
use the contact from the Model A Ford points
for now, but will scrounge up the correct points
to have on hand.

The old square / rectangular condensers
tested at .28 and .29 mfd. Believe I read
that .22 is correct for the A-80.
I have two .22 axial caps, but the trick
will be to see if I can install them in the
original spot on the bottom side of the mag plate.
On the axial caps, does it matter which end is
"grounded"?
Thanks.

Prepare to be boarded!

[jeff-register]

Checked into this a few ago. A jeweler will weld the new material . Never found a supplier so rob the metal from doner points.

[amuller]

Good article about repointing points. Some people have had good luck using slices of tungsten TIG welding electrode for contacts. Seems to me the quality of new point sets has deteriorated quite a bit since I used to work on cars. Misalignment, sloppy fit of pivot….

[jeff-register]

THAT’s a big 10-4, with many,

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