What goes in the hole

Information relating to the Matchless G80 or AJS Model 18 500cc Heavyweight.
G12 Chris
Posts: 145
Joined: Fri Nov 27, 2015 11:53 pm
Location: Essex

What goes in the hole

Post by G12 Chris »

ImageBuilding my model 18 and wondering what goes in the gap from the mag to the case
User avatar
clive
Member
Posts: 5657
Joined: Mon Jan 01, 1990 12:00 am
Location: LONDON UK

Re: What goes in the hole

Post by clive »

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.
clive
if it ain't broke don't fix
User avatar
dave16mct
Member
Posts: 3234
Joined: Mon Jan 01, 1990 12:00 am
Location: LANCASHIRE UK

Re: What goes in the hole

Post by dave16mct »

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.
Dave.
G12 Chris
Posts: 145
Joined: Fri Nov 27, 2015 11:53 pm
Location: Essex

Re: What goes in the hole

Post by G12 Chris »

Thanks guys, and good tips
Chris
User avatar
Pharisee
Member
Posts: 1126
Joined: Tue Mar 15, 2016 8:51 pm
Location: Lincolnshire UK
Contact:

Re: What goes in the hole

Post by Pharisee »

I'm from the Fens.... Gimme six.
Mick D
Posts: 2886
Joined: Mon Mar 24, 2014 5:44 pm
Location: Aberdeenshire

Re: What goes in the hole

Post by Mick D »

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
User avatar
Rob Harknett
Member
Posts: 11236
Joined: Mon Jan 01, 1990 12:00 am
Location: ESSEX UK

Re: What goes in the hole

Post by Rob Harknett »

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.
George Kaplan
Posts: 160
Joined: Tue Apr 25, 2017 1:24 pm
Location: York

Re: What goes in the hole

Post by George Kaplan »

Here you go:

Image

John
User avatar
Rob Harknett
Member
Posts: 11236
Joined: Mon Jan 01, 1990 12:00 am
Location: ESSEX UK

Re: What goes in the hole

Post by Rob Harknett »

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.
G12 Chris
Posts: 145
Joined: Fri Nov 27, 2015 11:53 pm
Location: Essex

Re: What goes in the hole

Post by G12 Chris »

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