You must have been very unlucky, Jimmy. We had just two derailments on the rack section in the six hours of operation last Saturday. One was due to the coupling loops on the trailers over-riding (and easily fixed by turning one of the tram trailers round). We never identified the cause of the other. Of course, with the risk of rolling stock plunging a considerable distance to the floor, both operators would have stopped what they were doing, causing a temporary lack of movement on the "flat" part of the layout.
For those that didn't go, so won't understand what I'm saying (or my cryptic reference to "G-scaling new heights" in my earlier message), we took a 43 foot long layout where the front section was a two-road terminus (Bryants Bottom) via a single track to a station with passing loop and sidings (Lacey Green), after which the line turned through 180 degrees to climb a rack section to a further two-road terminus (Bledlow Ridge) more than 6 foot off the ground . . .
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The track from the Lacey Green to bledlow Ridge was fitted with catenary, and was operated by four FO rack locos like this one . . .
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As the remainder of the "flat" section was (deliberately) unwired, locos needed to be swapped at Lacey Green, with three steam trams conveying passengers (without the need to leave their seats) to Bryants Bottom . . .
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As you can see, passengers were conveyed in tramway trailers, mostly LGB, but with a couple of toastrack coaches made from Bachmann open trams.
You'll notice from the above picture that we had a Ballenburg steam rack loco, but its operation was too unreliable to be in regular use (juddering on the rack). We also had an unusual Corpet Louvet loco, and yes, it really did climb the 1 in 4 rack section . . .
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. . . but only because it was an early conversion by GRS to use the underpinnings of a 2046 rack loco, with extra axle added.
Our layout is modular, so while some of the "flat" sections have appeared at many exhibitions (including Exeter in 2022), this was the first outing of the rack section in four years. Its use at Exeter this year was a response to wanting an invitation for a second successive year (we normally only get invited to exhibitions every second or third year, so the exhibition isn't just a repeat of the previous year's), but it also acted as a trial run for the same (or very similar) layout that will be exhibited at the mainstream model railway show at London's Alexandra Palace in March 2024. It took us the first hour to find a way to operate the layout in a way that kept things moving efficiently . . . but with a maximum of three things moving at once (and at prototypical "tramway/rack speeds") it was a very different "watch" than many of the roundy-roundy layouts in the main hall.
All photos courtesy of Ben Schlegel
Cheers
David