Wildguzzi.com
General Category => General Discussion => Topic started by: guzzista on June 13, 2015, 12:31:01 PM
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This may have been covered before , but first time I noticed a Tonti round fin( LM1) with shimmed rocker shafts(no springs or bronze washers), something a PO did a while back. Any thoughts other than on a street motor, ( which this is) does not make a whole lot of difference?
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The angle of the pushrods ensures that the springs and washers will work just fine. It's a system that was used for forty five years without issue. Why fix what isn't broken?
Pete
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That's what I thought. Back to stock she goes. Thanks Pete
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The way I read it was that the spring and washer had been removed and the end float removed by shimming? To me that seems un-necessary.
With a roundfin there is, (From memory, I haven't been inside one for a while!) only one washer and a spring as the steel rocker support precludes the need for a bronze washer on the thrust end. The squarefins with their aluminium carriers require two extra washers to help prevent galling.
Pete
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Yes, the (bronze) washers and the springs had been packed away and some hardened steel shims were in place. In any case I put the original bits back. I also found a 2mm steel spacer between the (correct type) rear drive and swingarm ( LM1) . Needless bodgery has taken place on this one...hopefully I wont find alloy gears in the timing case
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The shim at the rear axle was to space a fat tire away from the swing arm. I carry a 5mm shim in case I get a rubber-rubber during an on-the-road tire change.