Hi Everyone,
I haven't been on RMweb for ages, ever since my move overseas to my island paradise, away from all the hubbub of mainland UK.
I can't see a huge problem with re-starting model railway shows, even though they were previously well known for over-crowding,
oversize rucksacks, and a degree of pushing and shoving. We just need to follow the now more relaxed supermarket practice,
having scrapped the one-way system in the aisles, although retaining the separate entrance and exit, and with a limit on overall numbers at any one time. As long as everyone wears masks, and keeps one metre apart (like at Scaleforum on the sunday afternoon!), we'll all be fine.
Regarding material for loco pick-ups, i've always found phosphor-bronze good on nickel tyres, nickel-silver strip to work better on steel tyres, and hard brass wire works well on anything. No doubt it's all down to the metallurgy, i'm told that even the finest steel has quite a
rough surface, hence it's superior adhesion properties, perhaps not so good for conductivity though, with the bumping causing more sparks. The pick-up metal should always be softer than the tyre metal, or you'll end up with grooves. I've never been a fan of enclosed plunger pick-ups, the springs tend to eventually collapse, and to change some, means removing the wheels.
Enjoying a visit to Little Bytham two years ago, we ran two of my DJH Black 5s (supposedly on a Mansfield to Norwich cup tie special) around the Up Main, Tony was rather cross to find some oil had got on to his railheads. I have a habit of allowing a droplet of oil on to my loco driving wheels, it reduces sparking between wheel and rail, meaning less dirt, keeps the wheels and pick-ups cleaner, and I find everything runs more smoothly, quite good for starting wheel-slip effects too. In the real world, high-voltage switchgear is invariably contained within an oil bath, to reduce arcing, my method is just a scaled down version. It makes track cleaning easier too, none of this "I spent two hours cleaning the track" nonsense, the film of oil spreads along the track, loosening any dirt, then a heavy loco with a wiping pad is sent around to mop things up.
I'm a great admirer of the late Roy's Retford layout, although sadly I never got to see it in the flesh, I must say it looks splendid in the latest photographs, and i'm sure it is in safe hands.
Cheers, Brian. (On the Isle Of Wight)