Magneto Coil/Spark Plug Wire Connection

[rmaynard 15,927]

What is the best way that you have found to keep the plug wire from slipping out of the magneto coil?

 

[peter lena 9,092]

 

 

@rmaynard what does the initial wire mount spot look like ?  not familiar  with it , pete

[rmaynard 15,927]

17 minutes ago, peter lena said:

 

 

@rmaynard what does the initial wire mount spot look like ?  not familiar  with it , pete

The spark plug wire goes behind the bearing plate and exits at the hole shown (breaker wire is shown coming out). Then it goes over to the coil and into the coil over the internal pin. The hole is 11/16" deep. At this point, there is nothing to hold the wire to keep it from pulling back out or vibrating lose.

 

 

 

Edited June 14, 2022 by rmaynard

[WHX?? 50,775]

I would try some sort of silicone Bob. Thin coat around the lead then a filet around the outside? 

[peter lena 9,092]

@rmaynard  was going to suggest getting another unit , think over time cracking / shorting etc , has cought up with it. might even be cracked in the epoxy base starting area. @ WHX might have the idea. pete  

[ebinmaine 70,792]

1 hour ago, WHX?? said:

silicone

That was my first thought as well

[WHX?? 50,775]

I was going to suggest epoxy but what if it ever had to come out? 

[ebinmaine 70,792]

5 minutes ago, WHX?? said:

I was going to suggest epoxy but what if it ever had to come out? 

That's what I like about the silicone. Clean up both sides as best possible. Make sure for good adhesion as best you can.

Silicone should be able to hold that in there for the most part provided there's no serious mechanical difficulties.

 

And....

You could carefully remove it if you needed to unlike a hardened holder of some sort

 

[rmaynard 15,927]

I like the silicone idea. If it's tough enough to hold a brake lining in place, holding a simple wire should be a no-brainer. The issue would be if my new plug wire was made of silicone already. Silicone doesn't easily stick to silicone. 

[WHX?? 50,775]

47 minutes ago, rmaynard said:

hold a brake lining in place

True... maybe rough up the wire end with some sand paper first. Shouldn't be a ton of vibration or heat there. What motor is that Bob? 161 pull start perhaps?

[rmaynard 15,927]

36 minutes ago, WHX?? said:

What motor is that Bob? 161 pull start perhaps?

K161-T (pull start)

[WHX?? 50,775]

Yep thought so. I got one in the Amigo I gotta tie into one of these days. 

[953 nut 57,990]

Is there room enough to put a terminal on the wire's end?         

[rmaynard 15,927]

I think I've come up with a solution (a clamp). Will post pictures soon.

 

 

 

 

 

[wallfish 17,507]

epoxy . Most are held in with epoxy like the Tecumseh coils. Same for the little O&R engines I have. There shouldn't be a need to remove it but the epoxy only sticks to the outer insulation and they can be pulled out by force if need be but it will hold it in there and survive vibration and tugs on it. I've replaced quite a few wires on the O&R engine coils. They get damaged because they're exposed

[rmaynard 15,927]

RESOLVED

 

Epoxy and a zip tie. 

 

Edited June 20, 2022 by rmaynard