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PostPosted: Mon Nov 07, 2016 7:08 pm 
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Posts: 244
Just took delivery of a pair of brand new Lightweight Meilenstein Schwarz and while testing the smoothness of front hub bearings, I couldn't help but notice just how simple it was to remove the dust caps on either sides of the axles.

At least on the Schwarz editions, they're held in place by interference fit with a slim O ring on the inner diameter of the dust caps.

Now, what got me worried was that on one side of the front hub, there were axle shims (about 4 of these) while the other side has no shims.

I've always thought that axle shims were supposed to be placed behind the bearings like this:

<[]|||--------|||[]> Instead of <|||[]--------[]|||>

Not to mention, the shims were only on one side of the axle.

Is this normal?

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PostPosted: Tue Nov 08, 2016 6:16 am 
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Ask LW?

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Posted: Tue Nov 08, 2016 6:16 am 


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PostPosted: Tue Nov 08, 2016 3:17 pm 
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in the industry

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Posts: 743
been using and selling LW's for a few years, never had any issues with hubs.
BTW awesome emoji graph dude.

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PostPosted: Tue Nov 08, 2016 8:49 pm 
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Location: England
Were the shims on the outside of the dustcaps?


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PostPosted: Tue Nov 08, 2016 9:44 pm 
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I've just checked mine, the dustcaps do come off easily, although they wouldn't fall of the spindle, I had to pull on them. I have no shims installed.

Steve


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PostPosted: Wed Nov 09, 2016 5:46 am 
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@ Steve_W,

No, the shims were installed on only one side and were in between the bearings and dust cap.


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PostPosted: Wed Nov 09, 2016 8:06 am 
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Sounds odd to me. I have no shims on my Lightweights. Does this suggest the hub is not centered correctly in the wheel and needs to be spaced to one side? That would be unacceptable to me...

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PostPosted: Wed Nov 09, 2016 11:40 am 
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cyclespeed wrote:
Does this suggest the hub is not centered correctly in the wheel and needs to be spaced to one side?

I don't think so... Correct me if I'm wrong but if the shims were an attempt to offset the hub then it would be extremely obvious that the dustcaps weren't sitting flush with the hub flanges on either side. One would be recessed (which shouldn't be possible anyway) and the other would be proud.


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PostPosted: Wed Nov 09, 2016 12:30 pm 
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I suppose so. But with 4 shims behind it, it should already be obvious that the dustcap isn't sitting flush with the bearing. Useful to know how thick the shims are too.
Anyway, makes no sense to me. I'd either contact LW or throw the shims in the toolbox.

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PostPosted: Wed Nov 09, 2016 1:25 pm 
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Location: Slovenia---that forest land
maybe shims are just for forks that touches large flanges?

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PostPosted: Wed Nov 09, 2016 5:05 pm 
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@leej88
Please get in touch with LW, their support is second to none.
You should be able to get a reply within 24hrs.

Cheers


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PostPosted: Wed Nov 09, 2016 5:26 pm 
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The shims are just a way of adjusting preload. It's not uncommon, Tune as well as others have been adjusting preload in this fashion for as long as I can remember. They are typically added only to one side. If the correct amount were added at the factory, then removing one will result in a slight amount of play in the hub. Removing all 4 would result in significant play. Typically hubs don't need 4 micro shims to make up for tolerance issues, but given that these hubs are not machined it's not that unusual.

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PostPosted: Thu Nov 10, 2016 6:06 pm 
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So i contacted lightweight and managed to speak to one of their technical support engineers over the phone.

What he told me was that the wheels are handmade and thus there are slight variations so the shims aren't something we should be alarmed about.

Having said that, the shims are paper thin. One of them dropped out when I removed the dust cap and I could barely pick it up from the ground as they were too thin.

Had to use a piece of tape to pick it up.


I think what madcow has said is correct though.


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Posted: Thu Nov 10, 2016 6:06 pm 


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