I just saw that Roco is coming out with an HOn30 (H0e) Fairlie. Certainly an interesting model!
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It looks (to me) like it is based off of a Ffestiniog locomotive (Wales...the inspiration for the D&RG).
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The model would make an excellent starting point for the D&RG's most unique locomotive...the Mountaineer!
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Blatant Plug
Have you seen Rod Clarke's book Narrow Gauge through the Bush? <!-- m --><a class="postlink" href="http://www.narrowgaugethroughthebush.com/">http://www.narrowgaugethroughthebush.com/</a><!-- m -->
Rod is a friend. The two narrow roads he writes about used Fairlies and other oddities. Rod did some marvellous drawings of the rolling stock (samples on the web site).
The book is a year and a half old and the last tie I saw him he said they'd sold enough copies to break even.

David Lloyd George - Double Farlie, Ffestiniog Railway, Gwynydd, Wales.

I'm off to the railway next week, so if you want some pictures.

Cool! I see that you are active in the n-scale forum...and your Coal Mine Railway thread looks pretty cool. I need to visit the N/Z forum more often...

Reminds me of playing legos as a kid and deisgning a car with two front ends - for the person who can't decide which way to go.

I can see why this design never caught on.