Topic: 1939 Champion model S1E – Page 2 – Antique Outboard Motor Club,Inc

This topic has 26 replies, 5 voices, and was last updated 3 years, 6 months ago by Bob Wight.

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June 6, 2022 at 10:28 pm #261081
Buccaneer
Participant
US Member
I’m not sure if an “universal OMC” coil would be a candidate for a coil
swap or not. I’m guessing your coil laminates are 5/8″? If so, they’d
have to be machined down where the OMC coil would go on.
Hopefully someone that’s tried this swap will chime in.

Prepare to be boarded!
June 7, 2022 at 9:14 am #261100
ml_mcm
Participant
Buccaneer wrote:

I’m not sure if an “universal OMC” coil would be a candidate for a coil
swap or not. I’m guessing your coil laminates are 5/8″? If so, they’d
have to be machined down where the OMC coil would go on.
Hopefully someone that’s tried this swap will chime in.

It is 5/8″. Wondering if any Johnson/Evinrude coils can be used? There seems to be plenty of those available.
June 7, 2022 at 9:16 am #261101
Tubs
Participant
The Johnson/Evinrude coil will work. Wires out the back are kind of a pain.
Tubs.

https://youtu.be/tVvSB5QxMrw

A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.
June 7, 2022 at 12:38 pm #261118
ml_mcm
Participant
Tubs,

Thanks

Gonna give this a try. Hopefully the next post will be a vid of a running motor?
June 13, 2022 at 9:54 pm #261475
ml_mcm
Participant
ml_mcm wrote:

Tubs,

Thanks

Gonna give this a try. Hopefully the next post will be a vid of a running motor?

So I bought an OMC coil (3.5k or so secondary) and modified my existing 5/8” laminate to 7/16” by removing layers and cutting the sides of the part that goes through the coil just like in Tubs video. Used large vise to press on the new coil. Went on pretty well. Shaved a little bit of insulation as it came through but nothing serious.

checked the secondary after …….open🤬🤬🤬🤬🤬

No idea how. Everything went as planned

How tight should it be to put it on? Slide on with out help and add a little silicon of something to hold it?

I would have never thought that these coils would be so fragile
- This reply was modified 3 years, 7 months ago by ml_mcm.
- This reply was modified 3 years, 7 months ago by ml_mcm.
June 14, 2022 at 9:31 am #261485
Buccaneer
Participant
US Member
In my little bit of experience, an easy “hand fit” of the coils on the laminates is okay.
It would scare me to use a press fit that requires a vice.
Silicone to hold the coil on may be okay, but a dab of clear epoxy may be better.

Prepare to be boarded!
June 14, 2022 at 9:45 am #261486
ml_mcm
Participant
Buccaneer wrote:

In my little bit of experience, an easy “hand fit” of the coils on the laminates is okay.
It would scare me to use a press fit that requires a vice.
Silicone to hold the coil on may be okay, but a dab of clear epoxy may be better.

Thanks.

I ordered another coil (different, and hopefully more robust supplier) and I’ll file a little more off and try again. Frustrating. This is my oldest motor right now and I’d really like to get it running
June 20, 2022 at 9:09 am #261703
ml_mcm
Participant
ml_mcm wrote:

Buccaneer wrote:

In my little bit of experience, an easy “hand fit” of the coils on the laminates is okay.
It would scare me to use a press fit that requires a vice.
Silicone to hold the coil on may be okay, but a dab of clear epoxy may be better.

Thanks.

I ordered another coil (different, and hopefully more robust supplier) and I’ll file a little more off and try again. Frustrating. This is my oldest motor right now and I’d really like to get it running

Strangeness going on with this one. Removed the coil and just for kicks measured it again and it was fine. I made the laminate smaller and put it back on and it was fine. Put it all back together and put some fuel mix into the cylinder and it fired right up. I shut it down and tried the fuel/carb source and couldn’t get it going again. I’m thinking I need to change the gas in the tank again. Tank was quite rusty and I did clean it pretty well but probably needs one more cycle of cleaning along with carb and fresh fuel.

I think I’m close. Thanks for the help. This forum is great!
June 20, 2022 at 12:16 pm #261709
Buccaneer
Participant
US Member
Do you have a screen strainer in the tank, or elsewhere?
Hopefully the spark issue stay’s resolved!
Awaiting the “running” video!

Prepare to be boarded!
June 30, 2022 at 8:58 am #262229
ml_mcm
Participant
So I still haven’t been able to get this thing running past the one time it fired up and had water spraying all over the place out of the bucket it was in and one other time it sputtered a bit.

The compression is 80-85. Is this low for a ’39 one cylinder? I bought a new spark plug boot and will install that tomorrow but just wondering what else I should look at?

I have spark, assuming it stays once I install the plug – I have 80-85 psi compression – and I’m putting some fuel mix in the cylinder.

What am I missing? Fuel, spark, compression – I should be touring around the lake………..
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