I spotted this on eBay and it looks a worthwhile modification to remove the problem of belt slipage.
On the Triumph setup, the toothed belt would replaced the twin v belts, but the v belt for the water pump and alternator would be retained.
The pictures show an interesting "outer" bearing.
Food for thought...
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=140743457718
Coast-2-Coast Run 2025; The aftermath
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After Club Triumph’s Coast-2-Coast Run had finished I stayed for a few more
days to visit two very fine historic aircraft collections; RAF Hendon and
IWM D...
5 hours ago