Roco updates turnouts with revised frog design and wiring support

Roco took aim at one of the most failure-prone parts of a layout on May 14, revising three popular turnouts with a new frog design, revised wheel guides and pre-installed frog polarisation. For operators, that is the kind of upgrade that matters far more than a cosmetic refresh because it goes straight to the spot where short-wheelbase locomotives, shunters and fine-detail stock most often stumble, hesitate or lose pickup.

The updated range sits in Roco’s H0 Roco Line family and the company has applied the same engineering language across multiple listings. The revised turnout left Wl10, item 42582, and turnout right Wr10, item 42583, are both 345 mm long with a 10-degree branch angle and a 1,946 mm branch radius. The curved turnout left BWI2/3, item 42560, and curved turnout right BWr2/3, item 42561, use a 30-degree arc angle and a 358 mm radius. Roco’s single slip turnout EKW10, item 42591, is also part of the refreshed line, measuring 345 mm long with a 10-degree crossing angle and a 959 mm branch radius.

Roco described the frog and wheel guide as completely revised, and said prototypical passage through the frog was possible on the new versions. It also specified that the groove width in the frog area conforms to NEM, a useful detail for anyone running mixed fleets or stock with less forgiving wheel standards. Gaugemaster’s turnout update note said the redesign was intended to improve reliability and running performance across a wider range of rolling stock, which is exactly the sort of change that shows up in everyday operation rather than in a static display case.

The wiring side of the story is just as practical. The revised turnouts come with pre-installed frog polarisation, so builders do not have to add extra switching, external contacts or aftermarket modifications to get dependable electrical continuity through the frog. That should make a real difference in slow-speed shunting, where a dead spot at the frog can stop a locomotive cold or trigger a frustrating short. For existing Roco users, the revisions sharpen the case for replacing older pointwork during a rebuild or new yard project, especially if the layout relies on compact geometry and low-speed switching.

Roco’s own product pages also show that this is not a one-off tweak. Some revised items carry previous item numbers, including 42493 for the EKW10 and 42568 for the curved turnout left BWl9/10, pointing to a broader update rather than a single isolated part. For anyone planning a new layout, the message is blunt: better running and simpler wiring at the turnouts can remove the exact headaches that usually make the busiest part of the railway the least reliable.