A lot of HOn3 guys hang out at
HOn3 : HO scale modeling of 3 foot narrow gauge Tends to be a little Colorado-focused, and more towards the "rivet counter" end of the spectrum, but still fun to me.
Here on The Gauge, there are some regular contributors in the logging section, and some fine HOn30 and On30 modelers. The HOn30 guys are just like us, except their track gauges were shorted by 1.5mm, and they secretly run their N gauge modern era diesel stinkpots on their track when nobody is looking. Meanwhile, the On30 guys are the ones who couldn't resist the beautiful but very tempting Porters, Shays, and Climaxes at the LHS, while at the same time refusing to give up their HO standard gauge diesel stinkpots when nobody is looking.
Again, the logging info on The Gauge - and not just Western logging - has been very helpful to me in planning my HOn3 logging and general freight line, the Tillamook Head and Bethel Railway.