(12-08-2018, 02:36 PM)danbrotherston Wrote: As for the bus racks I think bikes aren't supposed to sit down in the rack, if I'm recalling right, the bottom loops are just a backup, it is supposed to sit on the tires at the edges and the arm holds it vertical, but I'll have a look next time I take the bus, I'd be surprised if it wasn't fitting. Interestingly the GO transit racks don't even have a vertical arm, at least not a tall one they only clamp the tire.
A better design would have just one wheel captured (ideally the front wheel), in front of and behind the tire. The tray would extend out the back to catch the rear wheel, and only guide it laterally. That way, bikes of all wheel sizes and all wheelbases can be accommodated securely. The current setup is overdefined, and thus results in a "loose bike".
(1) shows probably about the best you can do with the current GRT rack.
(2) shows probably about the worst thing you could do - if the bus hits a bump, the front will drop down, back will pop out, and it's likely you'll lose your bike.
(3) would be a better design.
I'm so spoiled by my 1UP rack, which is absolutely rock solid, secure, and I can load and unload my bike in 5 seconds.