45 Magneto, Cable, & Spiral Question

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ravaged
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45 Magneto, Cable, & Spiral Question

#1

Post by ravaged » Thu Nov 29, 2018 7:07 pm

Hey there! Does anyone have any experience with installing a Morris mag on a 45 and getting the optionally purchased arm mount that goes under the magneto so you can use the spark cable to advance/retard the mag with the handlebar spiral? I'll post some pictures tonight of the setup but I can't seem to get the cable to work well enough to move the magneto with any reliability. The geometry of the arm and weight of the mag just seems to be too much for the cable to push and pull it around effectively? Anyone ever have any luck with this? I've search around for pictures of a mag with the cable arm installed but every mag install I've seen doesn't seem to be set up to be operated by the handlebar spiral.

Side question...for those that don't run a cable for the mag at all do folks just let the spiral spin as it would since there is no cable plunger to interact with or is there some preferred way to keep the left side spiral in a fixed position when there is no need for a cable? Thanks guys!



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Re: 45 Magneto, Cable, & Spiral Question

#2

Post by ravaged » Fri Nov 30, 2018 2:42 am

Here's a pic of the mag setup.
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IMG_0226.jpg
IMG_0226.jpg (160.63 KiB) Viewed 170 times

RUBONE
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Re: 45 Magneto, Cable, & Spiral Question

#3

Post by RUBONE » Fri Nov 30, 2018 4:24 am

Loosen the tension on the bolts clamping it all together. Move the cable clamp location to improve the cable angle. Why do you even need the retard function? 45s are easier to kick than mopeds....

ravaged
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Re: 45 Magneto, Cable, & Spiral Question

#4

Post by ravaged » Fri Nov 30, 2018 12:43 pm

Thanks for the reply. I don’t know that I do need to use the cable. I just threw it on there to see how it worked. That’s why I was asking the second question as well about the spiral when there is no cable involved because I’m not sure it’s worth keeping it installed.

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Re: 45 Magneto, Cable, & Spiral Question

#5

Post by RooDog » Fri Nov 30, 2018 10:29 pm

You could just simply lock the mag in the fully advanced position and leave the cable in place just for looks if you are still able to kick start it that way. While I was in search for a Boden Cable, that is what this stiff wire and coil is called, for a hand choke for one of my hot rods I discovered that the inner wire came in many differing thicknesses and stiffness too. Perhaps you have one of the smaller diameter, or softer wires. A lawn mower or tractor repair parts shop may have a suitable inner wire that will work with your mag.....
Best Wishes.....RooDog

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Re: 45 Magneto, Cable, & Spiral Question

#6

Post by ravaged » Sat Dec 01, 2018 3:51 pm

That’s a good idea on the cable stiffness. I’ll have to see about locating something that would work better. Does anyone know the answer to the spiral question if I were to ditch the cable altogether? Thanks all.

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Re: 45 Magneto, Cable, & Spiral Question

#7

Post by RUBONE » Sat Dec 01, 2018 6:56 pm

You can use a washer type spacer to lock the spiral. You can make one or look in plumbing fixture sealing rings for a close size. When the end nut of the spiral is tightened the washer takes up the free play and locks the spiral in place.

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Re: 45 Magneto, Cable, & Spiral Question

#8

Post by pan620 » Sun Dec 02, 2018 4:54 pm

What Rubone said is how I have done it, last time I think I used a 3rd gear retaining ring.

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