Should the Brake Drum "Float" Without the Cush Drive Rubbers?

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Thanks L.A.B. for the instruction. I have just tried that method.
I have copied to clipboard but am unsuccessful pasting.
 
BERT said:
I have copied to clipboard but am unsuccessful pasting.
Click to expand...
Depends on what system you are using (computer, phone?). If computer then click where you want to add the link in your reply box, then right click>Paste.
 
BERT said:
This is a tap device.
Click to expand...

For Andriod, once the link has been copied to clipboard, go to the reply box and place your finger on the screen where you want to paste, you should see two options come up (ignore the keyboard if it opens) 'Paste' and 'Select all' then tap 'Paste'.

iPad/iPhone I don't know but I'd guess it would be similar as they're too posh for me.
 
L.A.B. said:
For Andriod, once the link has been copied to clipboard, go to the reply box and place your finger on the screen where you want to paste, you should see two options come up (ignore the keyboard if it opens) 'Paste' and 'Select all' then tap 'Paste'.

iPad/iPhone I don't know but I'd guess it would be similar as they're too posh for me.
Click to expand...
Awesome. Thanks L.A.B.
 
As for the end float on the drum I had so much it was making a grating noise, the circlip that locates the drum bearing had broken and the bearing was free to move. New circlip and sealed bearing restored normal noise levels.
 
kommando said:
As for the end float on the drum I had so much it was making a grating noise, the circlip that locates the drum bearing had broken and the bearing was free to move. New circlip and sealed bearing restored normal noise levels.
Click to expand...
Circlip is engaged and the bearing is secured.
 
Dan1950 said:
Circlip is engaged and the bearing is secured.
Click to expand...
Be sure it's the CORRECT bearing. Original size was hard to find, some made modifications to accept a different size, more readily available one. Perhaps ask the previous owner the history.
 
concours said:
Be sure it's the CORRECT bearing. Original size was hard to find, some made modifications to accept a different size, more readily available one.
Click to expand...
Just to clarify, it was the 4203 2RS bearing that was unavailable in the 16mm width, not the original 4203 bearing.
 
L.A.B. said:
Just to clarify, it was the 4203 2RS bearing that was unavailable in the original 16mm width, not the original 4203 open bearing.
Click to expand...
For wheel bearings (front and rear bolt-up type only), I fit a 5203-2RS, which is 1.5 mm wider than the stock 4203. It requires that the spacer between the wheel bearings be machined to accommodate the extra width. Conveniently, the hubs already have the extra depth to receive the wider bearing.

For the cush drive brake drum, I never considered installing a 5203-2RS, as there would be very little left of the bearing locating lip in the brake drum after machining. Relocating the Circlip groove looked like a non-starter as well, maybe you could split the difference? I did not feel like sacrificing a brake drum to find out. I always just fit a 4203 and the felt seals.

I personally have never seen a 4203-2RS bearing, mind you I have not gone looking too hard either.

Am I missing something?? I would love to know.
 
I found a source of 4203-2rs with the same width as the original and bought a lifetimes supply, they do show up from time to time.
 
Derek Wilson said:
I personally have never seen a 4203-2RS bearing, mind you I have not gone looking too hard either.

Am I missing something?? I would love to know.
Click to expand...

4203-2RS was available from Walridge in the correct 16mm width but it has been readily available for some time now.

4203 2RS | Bearing Revolution

4203 2RS Available To Purchase Online From Bearing Revolution, The 4203 2RS Is Available At Competitive Prices And Available From All Major Brands (Premium Range). Visit Us Online To Purchase 4203 2RS And Get Fast Shipping
www.bearingrevolution.co.uk www.bearingrevolution.co.uk
www.ashleypower.co.uk

4203-2RS Sealed Double Row Ball Bearing 17mm x 40mm x 16mm

4203-2RS Sealed Double Row Ball Bearing 17mm x 40mm x 16mm, Inside Diameter (d): 17.00mm, Outside Diameter (D): 40.00mm, Width (B): 16.00mm
www.ashleypower.co.uk

Wheels :: Wheel Bearings :: Universal Wheel Bearings :: Ball Bearing 4203-2RS

Ball Bearing RLS5 - 4203-2RS. Range of uses including wheel bearing, transmission and engine bearing. OD: 40mm. ID: 17mm. Width: 16mm
www.feked.com www.feked.com

Derek Wilson said:
For the cush drive brake drum, I never considered installing a 5203-2RS, as there would be very little left of the bearing locating lip in the brake drum after machining. Relocating the Circlip groove looked like a non-starter as well, maybe you could split the difference? I did not feel like sacrificing a brake drum to find out. I always just fit a 4203 and the felt seals.
Click to expand...


"Please note: On the rear brake drum/sprocket (06-2764) and the MK3 rear sprocket (06-6011) the bearing bore will have to be machined at least an additional .055" deep to accept the sealed bearing. The dummy axle (06-2067 Pre-MK3 or 06-5552 MK3) will have to be turned down .056" like the front hub spacer, discribed later. Since this requires a bit more work it will not be covered in this article."
 
L.A.B. said:
"Please note: On the rear brake drum/sprocket (06-2764) and the MK3 rear sprocket (06-6011) the bearing bore will have to be machined at least an additional .055" deep to accept the sealed bearing. The dummy axle (06-2067 Pre-MK3 or 06-5552 MK3) will have to be turned down .056" like the front hub spacer, discribed later. Since this requires a bit more work it will not be covered in this article."
Click to expand...
The above statement would indicate that the bearing is actually a 5203-2RS - .055"-.056" is approximately 1.5 mm.

I am going to talk to Mike at Walridge. A 4203-2RS would definitely be convenient, so long as the bearing load capacity has not been compromised in the making room for the seals
 
Derek Wilson said:
I am going to talk to Mike at Walridge. A 4203-2RS would definitely be convenient, so long as the bearing load capacity has not been compromised in the making room for the seals
Click to expand...

Page 81.

06-7688S
"Note - Commando Models with cush drive use bearing 06-7688 in drum
Our Norton Sealed bearings are exactly the same dimensions as original unsealed types – no
machining of hubs required."
 
What is wrong with original wheel bearings unless you plan on riding in a monsoon?
They seem to last forever and can be easily inspected and repacked with better grease.

And they hold up well to being driven in and out of the hubs.
 
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