Dick Stephen News Today

As the 80th anniversary of Operation Chariot – the raid on St Nazaire – approaches, former Worcester Royal Grammar School pupil Mark Rogers…

Hi there, all, Back in the days when I was in gainful employment, I had a colleague who was a mechanical engineer. He observed that ball races were/are intended for continuous rotaion and that if they habitually only rotate less than a full turn the races would brinell, damaging the bearing. This comment interested me at the time because there was an advertiser in the Amateur Radio magazines who used to sell Morse keys with their beam pivoted on ball races - he claimed this method was superior ...