Subject: Re: Smiths rev counter drive off of Rotax AT146 dynamo?
I may be wrong but I do not believe the Meadows engine, as fitted to Lagonda 4.5 Litre cars, used a dynamo driven rev counter.
However, I believe Speedograph Richfield in Nottingham can supply a dynamo mounted gearbox for a rev counter. Worth giving them a call.
Hope this helps
Regards
Mark