I take the pick up wipers on tenders either out of contact, or remove them completely. They serve no useful purpose; between the weight on driven wheels and the 'agitation' provided by them being driven, the loco alone has pick up enough, especially in the case of six-coupled or larger. (If tank engines work reliably, what need for tender pick ups?) And there's a downside to Hornby's tender pick up using wipers; after some use they become effective brakes. In the most severe cases among the locos I have - Hornby's 8F and B17 - the loco has struggled to move itself alone after about a year in use on the layout!bootneckbob wrote:...I'm not even sure what the pick ups on the tender are doing; seems a complicated way to do it it with the clip on a spigot...
Where tender pick up is useful (singles and four coupleds) it should be done on axle ends; ideally pinpoints for no incremental friction, but parallel bearings are acceptable.