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I have a a couple of locomotives that have steel wheels. They are both small (4-4-2T and 4-2-0T) so there is little option for extra pickup. They have rim scraper pickups made from phosphor-bronze, brass and steel wire (in an attempt to find something that doesn't spark). The problem is that the wheels spark when they are going down the track and leave little dots of black crap on the track and wheels treads (an even pitting on the 28" wheels on the 4-2-0T!). As a result they need a lot of cleaning. I have Peco code 75 nickel silver rail which i clean with either an abrasive track cleaning block or Brasso (is this right of should it be Silvo? I was led to believe that nickel silver is mainly brass anyway). so: does anyone know of anything i can use to stop the sparks? I get small blue ones with steel wipers, small yellow ones with steel wheels and phosphor-bronze or brass wipers and enomous yellow ones with brass wheels (unplated) and brass wipers. Thanks, Neil
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