What goes in the hole

Information relating to the Matchless G80 or AJS Model 18 500cc Heavyweight.
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What goes in the hole

Postby G12 Chris » Sun Apr 07, 2019 3:08 pm

ImageBuilding my model 18 and wondering what goes in the gap from the mag to the case

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Re: What goes in the hole

Postby clive » Sun Apr 07, 2019 3:51 pm

Nothing listed. To keep dirt out I have used a circle of plastic fuel pipe with the end held together with just a piece of wire.
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if it ain't broke don't fix

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Re: What goes in the hole

Postby dave16mct » Sun Apr 07, 2019 4:11 pm

I use foam pipe insulation. It's cut along its length to fit over copper pipes to say an outside tap to protect from frost. Just cut to length (slightly too long) and push into place.
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Re: What goes in the hole

Postby G12 Chris » Sun Apr 07, 2019 4:45 pm

Thanks guys, and good tips
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Re: What goes in the hole

Postby Pharisee » Sun Apr 07, 2019 5:57 pm


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Re: What goes in the hole

Postby Mick D » Sun Apr 07, 2019 6:11 pm

Hi

Be careful what you put there - don't put anything that can hold the grease and allow it to enter the magneto.

Regards Mick

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Re: What goes in the hole

Postby Rob Harknett » Sun Apr 07, 2019 6:28 pm

I used a seal from an old vacuum cleaner on a 1955 with SR1 mag. Dia was about right, the thickness, thick enough so when pushed in it stayed there . I cut it to save taking the bike apart. Fitted with the join at the bottom acting as a drain should moisture get in. Only took a minute to fit by cutting the ring.

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Re: What goes in the hole

Postby George Kaplan » Sun Apr 07, 2019 6:53 pm

Here you go:

Image

John

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Re: What goes in the hole

Postby Rob Harknett » Sun Apr 07, 2019 7:14 pm

By cutting my rubber I did not have to dismantle anything. So only took a minute to fit. Its now been in the bike since 1988.

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Re: What goes in the hole

Postby G12 Chris » Sun Apr 07, 2019 7:21 pm

The funny thing is I threw away something like this today for a toilet cistern so be going down the bin in the morning

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