Need rear hub spacer/bushing stack - MVAgusta.net
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post #1 of 32 (permalink) Old 09-04-2018, 07:42 AM Thread Starter
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Unhappy Need rear hub spacer/bushing stack

My rear sprocket holder was very wobbly, and chewed away part of the hub.
In my case, the top hat washer (flanged washer) had eaten itself into the aluminium cush drive, which caused the play and eventually lead to the cush drive touching the hub.
Why the top hat spacer has eaten the cush drive I don't really know.. but nevertheless I found an almost new cush drive and sprocket holder and installed them on my brutalia.
But what I also noticed is that the top hat spacer has a big groove in it, on both sides. And the bushings that run inside the needle bearings also have grooves where they meet.
So as a result, the whole stack is just about 1 or 2mm (approx guess) too short, and this causes the top hat spacer to rub against the hub.

The bearings all look and feel very good still. I cleaned them out and repacked with lithium grease.
I cannot see or feel any axial movement or play. The shaft has the brown rings where the bearings run, as you see often on these shafts, but not worn and the diameter is still the same.

So what I like to try is to replace the spacer/bushing stack, because if the stack is just 1 or 2mm longer my problems seem over.
But for the live of me I cannot find any replacement parts, only full hubs or even hubs + swingarm (ebay).
So I searched the web for industrial bushings that have the same size, but to no avail.

Alternative is that someone machines a top hat spacer that's 1 or 2 mm taller, instead of replacing the whole stack.

Anyone here that knows a place where I can buy a new set? Or maybe someone has a set for sale? Or who can machine a taller top hat spacer?
Any help is greatly appreciated!

Video showing the play on the sprocket carrier:
Video showing the difference between old and new cush drive:

'13 Brutale 800 Italia color scheme
The Netherlands

Last edited by jeroen.surf.nl; 09-04-2018 at 07:48 AM.
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post #2 of 32 (permalink) Old 09-05-2018, 02:00 AM
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Quote:
Originally Posted by jeroen.surf.nl View Post
My rear sprocket holder was very wobbly, and chewed away part of the hub.
In my case, the top hat washer (flanged washer) had eaten itself into the aluminium cush drive, which caused the play and eventually lead to the cush drive touching the hub.
Why the top hat spacer has eaten the cush drive I don't really know.. but nevertheless I found an almost new cush drive and sprocket holder and installed them on my brutalia.
But what I also noticed is that the top hat spacer has a big groove in it, on both sides. And the bushings that run inside the needle bearings also have grooves where they meet.
So as a result, the whole stack is just about 1 or 2mm (approx guess) too short, and this causes the top hat spacer to rub against the hub.

The bearings all look and feel very good still. I cleaned them out and repacked with lithium grease.
I cannot see or feel any axial movement or play. The shaft has the brown rings where the bearings run, as you see often on these shafts, but not worn and the diameter is still the same.

So what I like to try is to replace the spacer/bushing stack, because if the stack is just 1 or 2mm longer my problems seem over.
But for the live of me I cannot find any replacement parts, only full hubs or even hubs + swingarm (ebay).
So I searched the web for industrial bushings that have the same size, but to no avail.

Alternative is that someone machines a top hat spacer that's 1 or 2 mm taller, instead of replacing the whole stack.

Anyone here that knows a place where I can buy a new set? Or maybe someone has a set for sale? Or who can machine a taller top hat spacer?
Any help is greatly appreciated!

Video showing the play on the sprocket carrier: https://www.youtube.com/watch?v=fsnf17PF9eM
Video showing the difference between old and new cush drive: https://www.youtube.com/watch?v=H6fSRcTUdPM
You could buy one of my hubs and all your worries will be over.
Also you could buy the upgraded sprocket carrier which is the same as the pre2010 models run which is trouble free.
I know it is costly,but it means total reliability.
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Last edited by mitchy; 09-05-2018 at 07:54 PM.
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post #3 of 32 (permalink) Old 09-05-2018, 04:15 AM
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I've gone through and broken down all the required information you may need on the other post you have made, Jeroen.

Please feel free to take a look at the provided information and if you do require any further technical assistance, please do let me know and I will be happy to help.

Regards,

Jack

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post #4 of 32 (permalink) Old 09-06-2018, 03:31 AM Thread Starter
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Thanks Mitch, Jack, for the replies.

I've read the threads on the forum about the mitch hub, very nice piece of engineering! The motocorse hub looks like a very solid piece of kit too.
Still, it comes with a price. Especially mitch's hub, has to be shipped from the other side of the planet... Australia > Europe.

I think you would agree that it makes sense to first try to fix the bike by replacing a few bushings, instead of spending 600 euro's (700 USD).
If the bushings fix fails, I can always still buy a custom hub.

So if anyone has a bushing stack for sale, or know where to buy them, please let me know

'13 Brutale 800 Italia color scheme
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post #5 of 32 (permalink) Old 09-06-2018, 05:54 AM
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I believe (maybe I'm wrong) that Joe stocks Mitchy's hubs in The UK (or is it Ireland now)... gotojoe.

As for the bushings, you might try an email to CAG. He still has a lot of stuff, even though he is no longer formally in the parts business. [email protected]

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post #6 of 32 (permalink) Old 09-06-2018, 06:20 AM
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Try 'Star Twin Trading' (in Belgium I think). They used to be a forum sposor. They're pretty good for parts.

Cheers

Deano

2009 1078RR Brutale
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post #7 of 32 (permalink) Old 09-06-2018, 07:08 AM Thread Starter
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Quote:
Originally Posted by Deano View Post
Try 'Star Twin Trading' (in Belgium I think). They used to be a forum sposor. They're pretty good for parts.

Cheers

Deano
Thank's for the tip! There's a star trading here in The Netherlands, I have sent them an e-mail asking for the availablility of the parts. Let's hope they have something!

Quote:
Originally Posted by esq'z me View Post
I believe (maybe I'm wrong) that Joe stocks Mitchy's hubs in The UK (or is it Ireland now)... gotojoe.

As for the bushings, you might try an email to CAG. He still has a lot of stuff, even though he is no longer formally in the parts business. [email protected]
Hmm I found the ebay ad from Mitch himself on ebay, and it states it'll come from Australia... but I'll ask him when I really want to buy a new hub.
I emailed CAG too, let's see what's comes up Thanks for providing the email address!

'13 Brutale 800 Italia color scheme
The Netherlands
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post #8 of 32 (permalink) Old 09-06-2018, 02:39 PM
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I did this and haven’t look back. The new version is complete crap. It will fail again and you could be on the bike at that point.

Search the forum for my post concerning this. It’s got a lot of good info.

Quote:
Originally Posted by mitchy View Post
Quote:
Originally Posted by jeroen.surf.nl View Post
My rear sprocket holder was very wobbly, and chewed away part of the hub.
In my case, the top hat washer (flanged washer) had eaten itself into the aluminium cush drive, which caused the play and eventually lead to the cush drive touching the hub.
Why the top hat spacer has eaten the cush drive I don't really know.. but nevertheless I found an almost new cush drive and sprocket holder and installed them on my brutalia.
But what I also noticed is that the top hat spacer has a big groove in it, on both sides. And the bushings that run inside the needle bearings also have grooves where they meet.
So as a result, the whole stack is just about 1 or 2mm (approx guess) too short, and this causes the top hat spacer to rub against the hub.

The bearings all look and feel very good still. I cleaned them out and repacked with lithium grease.
I cannot see or feel any axial movement or play. The shaft has the brown rings where the bearings run, as you see often on these shafts, but not worn and the diameter is still the same.

So what I like to try is to replace the spacer/bushing stack, because if the stack is just 1 or 2mm longer my problems seem over.
But for the live of me I cannot find any replacement parts, only full hubs or even hubs + swingarm (ebay).
So I searched the web for industrial bushings that have the same size, but to no avail.

Alternative is that someone machines a top hat spacer that's 1 or 2 mm taller, instead of replacing the whole stack.

Anyone here that knows a place where I can buy a new set? Or maybe someone has a set for sale? Or who can machine a taller top hat spacer?
Any help is greatly appreciated!

Video showing the play on the sprocket carrier: https://www.youtube.com/watch?v=fsnf17PF9eM
Video showing the difference between old and new cush drive: https://www.youtube.com/watch?v=H6fSRcTUdPM
You could buy one of my hubs and all your worries will be over.
Also you could buy the upgraded sprocket carrier which is the same as the pre2010 models run which is trouble free.
I know it is costly,but it means total reliability.

Atom
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post #9 of 32 (permalink) Old 09-06-2018, 03:33 PM
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Quote:
Originally Posted by jeroen.surf.nl View Post
Thank's for the tip! There's a star trading here in The Netherlands, I have sent them an e-mail asking for the availablility of the parts. Let's hope they have something!



Hmm I found the ebay ad from Mitch himself on ebay, and it states it'll come from Australia... but I'll ask him when I really want to buy a new hub.
I emailed CAG too, let's see what's comes up Thanks for providing the email address!

Yes,Joe (gotojoe) lives in Ireland and has stock,which makes shipping much cheaper for you.
The ebay price is inflated to cover their high commissions.
If you decide to buy a new hub buy it from Joe.


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Last edited by mitchy; 09-06-2018 at 03:36 PM.
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post #10 of 32 (permalink) Old 09-06-2018, 04:56 PM
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Same as Atom, I went for the Mitchy hub as I didn't want any more hassles. I had the upgraded hub after the original shit itself at 5000k. Now that's useless cos the spacers wear. Thought of buying new spacers but beside availability I'd have been in the same place a few years down the track if I keep my current mileage up. I'll machine my own spacers when I get time (if I can find original dimensions) and pass it on to someone in need. Crap design.

Cheers

Deano

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