THREE OF US “ADVENTURERS” found ourselves enjoying a short jaunt on rail bikes recently. We were in the old D&RGW (Denver & Rio Grande Western) railroad depot in South Fork. A company there regularly rents out bikes for the three-mile run up to the turntable and back. Up for discussion was the idea of pedaling. Since two of us are “a bit slowed down,” that didn’t work. But Ed LaScala, one of the three owners of Revolution Rail Company, couldn’t have welcomed us more warmly to the old depot. Ed chatted about how he and the other two owners had…