![Why do steam engine wheels have these hemisphere bits parallel to the coupling rods? Why are some bigger than the others? : r/trains Why do steam engine wheels have these hemisphere bits parallel to the coupling rods? Why are some bigger than the others? : r/trains](https://preview.redd.it/n56p6tak8yw81.jpg?width=1080&crop=smart&auto=webp&s=6f5bfc8538f57863b032fe4c4256fa5e9639aeb1)
Why do steam engine wheels have these hemisphere bits parallel to the coupling rods? Why are some bigger than the others? : r/trains
Why do steam locomotive train engines all have wheels that have a lopsided section that is solid and doesn't have spokes? - Quora
![Particular Of A Driving Wheel Of A Locomotive Of A Steam Engine Train Stock Photo, Picture and Royalty Free Image. Image 7826599. Particular Of A Driving Wheel Of A Locomotive Of A Steam Engine Train Stock Photo, Picture and Royalty Free Image. Image 7826599.](https://previews.123rf.com/images/geronim0/geronim01009/geronim0100900005/7826599-particular-of-a-driving-wheel-of-a-locomotive-of-a-steam-engine-train.jpg)
Particular Of A Driving Wheel Of A Locomotive Of A Steam Engine Train Stock Photo, Picture and Royalty Free Image. Image 7826599.
![rail - What is the purpose of these “partially filled in” locomotive wheels? - Engineering Stack Exchange rail - What is the purpose of these “partially filled in” locomotive wheels? - Engineering Stack Exchange](https://i.stack.imgur.com/JbStW.jpg)
rail - What is the purpose of these “partially filled in” locomotive wheels? - Engineering Stack Exchange
![Why do steam engine wheels have these hemisphere bits parallel to the coupling rods? Why are some bigger than the others? : r/trains Why do steam engine wheels have these hemisphere bits parallel to the coupling rods? Why are some bigger than the others? : r/trains](https://i.redd.it/4ss34tak8yw81.jpg)