Can the Duplo Steam Train 10874 
climb the new bridge in Duplo 10426 Train Bridge and Tracks? 
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This question is similar to: Lego Duplo 10508 train does not pull up the bridge. If you believe it’s different, please edit the question, make it clear how it’s different and/or how the answers on that question are not helpful for your problem.IvanSanchez– IvanSanchez2025-01-15 18:24:52 +00:00Commented Jan 15, 2025 at 18:24
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Hi Helen and welcome to Bricks.SE! Do you have a reason to think this combination will not work, or are you just trying to be sure? Feel free check out the help center and take the tour to learn how this site and the contributors work. Play well!zovits– zovits2025-01-15 19:28:04 +00:00Commented Jan 15, 2025 at 19:28
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1 Answer
The train hub has cogs on the driven wheels that mesh with the rack on the bridge pieces, so in theory, there should be no slipping. The LEGO Group is also notoriously strict about testing its products and their compatibility, so while I don't have these parts on hand to try, I'd be surprised if these two sets weren't working together. However, others have experienced that when the train hub is powered by batteries with nominal voltage lower than 1.5V (or even partially discharged ones), the locomotive becomes unable to pull larger weights (multiple wagons with their load) up the incline. In that case, the suggested answers to this question could help troubleshoot the issue.