Magneto Advice please

[Robert Leigh]

Bob's comment is valid. On a hot day some years back I had a failure on the way to an event 50 odd miles away. I changed to my spare and called on the overhaul man on my way home, asking him to warm it up and test again. He phoned next day to agree that it failed at higher temperature. He had tested in his workshop but on the Riley it sits behind the upper part of the radiator, so I suggest that current hot weather may be a contributory factor.