Interesting Air Cleaner

rvich · Jul 10, 2019

My '74 850 had one. I traded it off to someone for a flat plate as I narrowed the filter to 62mm and the baffle had to go.

Danno · Jul 10, 2019

I always thought the inner shroud was to reduce the influence side winds could have on the mixture, leaning out the side the wind is coming from, but silencing makes sense in the real world of sound regulation.

Stephen Hill · Jul 10, 2019

I have one of these in my Commando parts stash. Suddenly I feel privileged!

Stephen Hill

lazyeye6 · Jul 10, 2019

I've been using one just like it to start the charcoal briquettes for my barbecue.

Ron L · Jul 10, 2019

Both my '73 MkV 750's have these. As L.A.B. stated, it was supposed to reduce intake noise. My '74 didn't have an air filter when I bought it and my '69 is plain (but chrome).

MichaelB · Jul 10, 2019

I was hoping you would chime in Ron As I knew you had an original MkV.
I thought it strange the MkV 750 would have it and yet my original Mk1 850 didn’t then the Mk2 850 did. The Mk2 850
Makes sense to me as they were trying to quiet them down with the welded mutes and all. The Mk1 had the removable mutes that usually fell out in the first couple miles.
Why do I think Norton was using up old stock or whatever they laying around for the Mk1.

swooshdave · Jul 10, 2019

L.A.B. said:
They do list it. They just don't supply the part made to the original specification presumably because they can sell the (cheaper to make) flat 06.3813 plate instead.
https://andover-norton.co.uk/en/shop-details/15463
"06.0902"

What I mean is that it's on the parts drawing is that they don't list it for sale currently.

swooshdave · Jul 10, 2019

I assume most of them were binned due to the difficulty in getting the filter in and out.

comnoz · Jul 10, 2019

I have a couple on my shelves. They were from later 850's but maybe not the MK2a? The bikes also had the restricted mufflers.

swooshdave · Jul 10, 2019

comnoz said:
I have a couple on my shelves. They were from later 850's but maybe not the MK2a? The bikes also had the restricted mufflers.

That was my assumption, pre-MkIIA and done for noise restriction. Intake sounds are one of the areas that manufacturers address.

Why the one I ran across was interesting is that it was in a Combat basket case, although after 50 years I had no delusion it was the actual air cleaner for that bike.

L.A.B. · Jul 10, 2019

comnoz said:
They were from later 850's but maybe not the MK2a?

Certainly not Mk2A (or Mk1A) as they had the plastic airbox.

ILLF8ED · Jul 10, 2019

swooshdave said:
I saw that in the parts book. Never seen one in person.

Usually by the second reply someone has the answer. This is exciting!

I’ve taken to compressing the intake rubbers, not trying to skip the filter in.

I used to do it your way and now just man handle the filter and surround into place. There really isn’t a good or preferred method. That said though if I had that filter front plate your method would be the only way.

swooshdave · Jul 10, 2019

illf8ed said:
I used to do it your way and now just man handle the filter and surround into place. There really isn’t a good or preferred method. That said though if I had that filter front plate your method would be the only way.

If I recall (and I hope I do because I’ll be doing it soon) is to have the back and front plate in place. Gently warm the rubbers and have a friend push the front plate towards the carbs. Slip the filter and mesh in and have a beer.

ILLF8ED · Jul 10, 2019

swooshdave said:
If I recall (and I hope I do because I’ll be doing it soon) is to have the back and front plate in place. Gently warm the rubbers and have a friend push the front plate towards the carbs. Slip the filter and mesh in and have a beer.

Just did it this afternoon as above. Works fine.

swooshdave · Jul 10, 2019

illf8ed said:
Just did it this afternoon as above. Works fine.

Which beer?

Interesting Air Cleaner

rvich

Danno

Stephen Hill

lazyeye6

Ron L

MichaelB

"Sons of Arthritus"

swooshdave

swooshdave

comnoz

swooshdave

L.A.B.

Moderator

ILLF8ED

swooshdave

ILLF8ED

swooshdave

Similar threads