rear hub assembly

Classic Norton Commando Motorcycles.

rear hub assembly

Postby rgla » Sat Sep 04, 2010 11:03 am

Just want to double check everything here.
Just replaced the tire and rear cush rubbers. It doesn't look like it seated as far as before I took it off.
AND check out the nut that holds on the hub. It doesn't look like it is screwed on far enough (only about 1/2 way) but it's as tight as it will get
any suggestions???

Image

and

Image

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Re: rear hub assembly

Postby L.A.B. » Sat Sep 04, 2010 11:18 am

rgla,

Your photos still don't show in your messages-even though they appear to be correctly tagged?

Did you check your User Control Panel settings-as I suggested previously? mikuni-carb-trouble-fuel-line-routing-t7382.html
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Re: rear hub assembly

Postby Rich_j » Sat Sep 04, 2010 11:28 am

Photos deleted-as the problem has been rectified (L.A.B.) :)


Weird, just reposted yours no changes and photos come out OK :?
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Re: rear hub assembly

Postby L.A.B. » Sat Sep 04, 2010 11:35 am

Rich_j wrote:Weird, just reposted yours no changes and photos come out OK


It's not weird, I did the same for rgla the last time, but he appears to have a disabled user control panel setting.
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Re: rear hub assembly

Postby highdesert » Sat Sep 04, 2010 12:15 pm

They are a tight, almost no give, fit when brand new. I had to put some silicone lube on the rubbers and it took two of us to pull the hub strongly into the rubbers, from the left side.



Regardless, your let axle nut should be fully seated, something hanging up, maybe the single outside hub spline not in the slot?

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Re: rear hub assembly

Postby Anglophile » Sat Sep 04, 2010 3:53 pm

highdesert wrote:Regardless, your let axle nut should be fully seated,


I'm looking at my rear hub assembly and the nut doesn't appear to be fully seated either. :? Seems if the washer were thinner it wouldn't be an issue. I wonder if this is the case on a lot of 'Cush-Drive' Commandos.
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Re: rear hub assembly

Postby splatt » Sat Sep 04, 2010 6:53 pm

One it doesn't look like your cush drive is fully seated, I don't believe you should be able to see the paddles like that, as high desert said make sure the flat on the dummy axle is seated in the swing arm.My axle is a couple of threads short of the end of the nut.
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Re: rear hub assembly

Postby rgla » Sat Sep 04, 2010 8:00 pm

The user control panel is set to the settings u informed me of
all are at yes or on
not sure why the photos aren't posting correctly

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Re: rear hub assembly

Postby L.A.B. » Sun Sep 05, 2010 1:26 am

rgla wrote:The user control panel is set to the settings u informed me of
all are at yes or on
not sure why the photos aren't posting correctly



OK problem solved.

Your "BBCode" setting had been disabled (set to OFF).
It would normally be enabled (ON) by default, so I've re-set it.

I also noticed your "Flash animations" is set to OFF? You may wish to change that, as it would normally be ON by default?
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Re: rear hub assembly

Postby B+Bogus » Sun Sep 05, 2010 2:56 am

Looking at the photo - things aren't right, are they!?

I'd be looking at what spacers are fitted between the brakeplate and the sprocket (is there sufficient clearance?), and especially what's going on between the flange on the stub-axle and the bearing in the drum, and if the bearing's still correctly seated in the drum - i.e. is the circlip still holding the bearing in place?

If the circlip springs out the drum can 'walk around' on the bearing, which would let it walk away from the cush drive. The NOC notes mention that the circlip needs to be fitted with the sharp edges away from the bearing. Ask me how I know :oops:

It certainly needs pulling down for inspection ;)
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Re: rear hub assembly

Postby rgla » Sun Sep 05, 2010 9:53 am

maybe it looks more drastic in the photo
but the axle is only a couple - a few threads short of the end. maybe this is how i had it before - don't remember.
it seems like others have the same issue or non-issue (couple threads short of the end)
the stub is correctly fitted in the the swingarm. the only thing i fixed when putting this back together was ...
i was missing the space that goes inside the hub between the brake shoes and the hub. i was missing this and the shoes were grinding into the side of the hub. Fixed now.
maybe i'll take it apart and reassemble - trying to seat the the paddles deeper in the new cush drive rubbers

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Re: rear hub assembly

Postby Anglophile » Sun Sep 05, 2010 1:02 pm

rgla wrote:maybe it looks more drastic in the photo



It probably does look more drastic in the photo but I was checking out my hub again and have come to this conclusion:

There HAS to be some clearance (mine is about 1/8"). If there is no clearance the brake drum would rub the wheel hub causing binding/friction and negating the purpose of the Cush Drive. (my technical post for September :twisted: )
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Re: rear hub assembly

Postby B+Bogus » Sun Sep 05, 2010 2:57 pm

rgla wrote: i was missing this and the shoes were grinding into the side of the hub.


This exactly matches what happened to my bike when the circlip came out of the sprocket/drum... the drum migrated away from the wheel and started clattering against the brake shoes.
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Re: rear hub assembly

Postby rgla » Mon Sep 06, 2010 8:39 am

don't know if this matters but this photo was taken just after reassembly - so it hadn't been driven.
So could've "walked away" at this point. It does seem to drive okay and isn't moving.
However, I seem to remember that the stub axle was a bit loose in the hub/drum - I don't recall anything holding the stub axle in the drum.
i inspected the wheel bearing an it seemed fine - not sure about the circlip - does that hold the stub axle in place?

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Re: rear hub assembly

Postby swooshdave » Mon Sep 06, 2010 9:40 am

Stub axle is loose in the drum.
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