I have a few different bikes in the stable for different moods and applications but what I would really like to build is a 650B based off trail technical bike for low speed exploring and rock crawling in the technical terrain of New England. Back in my off-road motorcycle days this was a "plonker" and models were made by Bultaco, OSSA and Montessa. I envision something between a trials and XC type of machine. It would have very short chain stays, around 16.7", a bottom bracket height of 13.6 min., sharp rake, longish top tube and dual suspension of not more than 110 mm. Gearing would be a 1-X with a 15-42 cog set. Obviously this kind of geometry won't work for high speed descents down rocky hills or railing turns but that is not its purpose and I have bikes for that. It would have to be super light although I would sacrifice a few lbs for durability. I have been checking out specs of different frames and have not been able to find a suitable option. Maybe a custom Chinese item would work. Any suggestions?