Some comments on chain lubrication.
Some Vincent models had a chain oiler built in with an adjustable feed from the oil return in the UFM. On my basket case, built to ride, not to show Rapide I fitted a Scott oiler. This was relatively easy to fit and needs little attention other than an occasional top up of the oil reservoir. The chain and sprockets seem to last well with the first chain and sprockets renewed after 20,000 miles and would probably have been OK for more miles. The replacements are approaching 20,000 miles also. During these miles the only thing I did to the chains was the occasional adjustment. The Scott oiler does need a vacuum feed to operate and I note that Peter Homes would prefer not to drill his manifold. An electrically operated oiler would require no manifold drilling. There is a bonus if you drill both your manifolds in that it is very easy to connect vacuum gauges to balance the carbs. With both vacuum and electrically operated oilers it is a moments job to increase the oil supply on wet rides. (That can happen quite often in the UK.
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Over the years on various motor cycles I have lubricated my chains by boiling in chain grease, spraying from a can with chain lube, dribbling oil from an oil can and automatic oilers. All these methods will lubricate and prolong chain life to a greater or lesser extent.
Call me lazy but for me, removing the chain, cleaning it and heating in lubricant is not my favourite job. Whatever method works best for the individual, a well lubricated chain wastes less power and gives a smoother transmission so whatever method you use don't forget your chain.