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
Triumph 2-litre and 14-60 Dolomite and Vitesse 1937-38 - Motor Trader 1938
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Triumph 2-litre and 14-60 Dolomite and Vitesse 1937-38 - Motor Trader
service data 1938
[image: Triumph 1937-38 2 litre and 14-60 page_1]
Triumph 1937-38...
1 day ago