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These are a long needed addition to N-scale.I hope that the minimum 14-inch radius for the locomotive and 18-inch for the cars doesn't cause low sales. They're eliminating anybody that runs T-Trak only from the potential customer base.
18” radius is an incredibly limiting feature. Pretty much excludes any Unitrack layouts.
The axles have ball bearings to ensure they roll extremely well despite being of an inside-bearing design
They have my attention with that! I wish other manufacturers used bearings on inside bearing cars.
Rapido uses inside bearings on their Comet cars - they aren't as free rolling as you would expect. Kato Amfleet cars are probably the best when it comes to inside bearing truck design. No separate bearings - just minimized contact area between the bearing and axle which results in less friction. This is done by making the bearing thin and also smaller than usual axle diameter.
I really need to run an experiment with jeweled bearings like they use in watches. They come in a million shapes, but I suspect a donut shape with an inside diameter .05mm larger than the axle would work best.
Didn't you try something like this when we had a lengthy thread about N scale inside bearing truck's performance? Or back then you also were planning on this test and you never followed through? I recall that (as I recommended) with all the lubricant removed Kato trucks rolled very, very well.
IF n.scale.Sales = Bad THEN (Attachment Link) LOOP=10EXIT