Working Bascule Lift Bridge N Scale 1:160 - Hand Crank, 2 Leaves

Free N scale 1:160 version of a working double-leaf bascule lift bridge for model railways. A hand crank on the tower turns a pinion that drives a gear sector on each leaf, so the leaves really lift (0 to 75 degrees). Each leaf swings on trunnion pins with a counterweight that drops into a pit in the pier.

WHAT IS IN THE DOWNLOAD

• 11 STL files for N 1:160: pier tower, operator cabin, girders with gear sector, deck with rails, counterweight box and lid, trunnion pins, pinion with shaft, crank arm and a fit test coupon. The bridge has two identical leaves, so most parts are printed twice. About 310 mm long over both piers.

PRINT NOTES

• The whole set was slice-checked in PrusaSlicer (0.4 mm nozzle, 0.2 mm layers): no failed parts and no supports needed; the crank arm and pins use a brim. About 223 g and 18 h for the full set, by the slicer estimate.

• - The moving parts were checked in a simulation (leaf swept 0 to 75 degrees, no interference, 0.3 mm running clearance). Print the fit test coupon first.

• - The leaf is tip-heavy: the counterweight box has a pocket and lid for steel or lead shot. At N the pocket holds only about 19 g of steel, so gear friction holds the rest. It is a display model, not a toy.

• - The model has not been test-printed yet. The images are renders, not photos; ship, train and water in the images are not part of the files.

WANT MORE?

The complete set with the H0 1:87 scale and the multicolour 3MF files is on Cults3D: https://cults3d.com/en/3d-model/game/working-bascule-lift-bridge-model-hand-crank-2-leaves-h0-1-87-n-1-160-rai

LICENCE

Free for personal use under CC BY-NC. Please credit the author and do not sell prints or files.

Designed with AI-assisted 3D tools and checked by the author.