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Lambretta rear hubs

Technical help for Series one, two and three Lambrettas. Models include the Li, Li Special, TV, SX, GP, Serveta and API/SIL models

Lambretta rear hubs

Postby kalifornia » Mon Feb 08, 2016 5:49 pm

I've been having rear brake problems on my Indian casing TS1 motor. Basically, the rear brake doesn't work. I suspected it might have been the rear hub which was an F.A. Italia one which I thought was crap when I bought it.
I went up to a well known scooter shop in Nottingham and bought a SIL one. I've fitted it today and when I turned the hub it was binding really badly in one place so I took it back off and put it on reversed. Again I turned the hub slowly and sure enough, the brake lining was egg shaped. They've told me they'll refund me no problem

I've just ordered a Scootopia one direct from them as they are supposed to be better quality, what I'd like to know is are these good quality hubs that are guaranteed to be round or am I going to end up with the same problem again.

Cheers,
John.
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Re: Lambretta rear hubs

Postby Covboy » Mon Feb 08, 2016 6:16 pm

Similar problem, essentially down to SIL casing pivots misaligned. This was the main contributing issue and Mickyork hit the nail on the head. viewtopic.php?f=10&t=4500

:- Re-welded by Jon @ ex Gran-Sport to provide correct pivot profile.
other points, since rectified
Rear brake cable routed incorrectly (over carb manifold, outer not fitting properly ) :oops:
Very hard Italian shoes. Softer compound shoes fitted
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Re: Lambretta rear hubs

Postby kalifornia » Mon Feb 08, 2016 7:26 pm

Thanks for the reply. How can you tell if they are out of alignment? I've looked at the threaded holes for the brake posts and they seem to be bang on in the centre of the casting lugs.
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Re: Lambretta rear hubs

Postby Adam_Winstone » Mon Feb 08, 2016 7:58 pm

Unfortunately, this is typical of SIL 200 casings and was almost certainly why the Jockey Boxenstop rear brake upgrade was developed...

http://www.jockeys-boxenstop.de/shop/de ... dl-gp.html

A decent hub might improve the situation somewhat but the problem stems from the casing, rather than the hub.

Good luck.

Adam
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Re: Lambretta rear hubs

Postby Covboy » Mon Feb 08, 2016 8:10 pm

I think they used a hub with a window cut into it so the can see how the shoes pivot and where they make contact ( or not) with the hub brake lining itself
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Re: Lambretta rear hubs

Postby kalifornia » Mon Feb 08, 2016 8:56 pm

Cheers guys.
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