Beauty is in the eye of the beholder and all. The Diamondback Andean. Possibly the first time this has ever graced Retrobike.
Did anyone discuss how much additional benefit there is to aero in a 20mph head wind?
The forks are 1999 model, the Shimano components are 1999 or 2000 era (check the date stamp for those), and the frame number isn't a GT format I recognise. Would start S7 or S8 for 1997 or 1998 though. @kingoffootball will be along soon...
There appear to be two models of HT2, one with round chain/seat stays, like pictured above, and one with box section stays and forged/CNC yokes. Possibly different manufacturers, frame numbers would help.
I suspect the logos are the same on other models. Is that your bike in the picture? You could compare it to the logos on my DH or F2, they're both 1997 built frames. Both shown here https://www.retrobike.co.uk/threads/coyote-dh.421541/
What's the frame number on yours? That should give you a...
I've not come across a Mantis before. Despite scrutinising the photos, it looks like a standard single pivot swingarm. Care to elaborate? The shock and upper link are very much in the style of an Amp B3, but is there some clever trickery with the swingarm?
I'm assuming @baron von greenback means 700c not 27" - @MattiThundrrr the diameter difference is 8mm, but your diagram makes the difference look bigger as all wheels are 'on the floor', in terms of the brake track, they're only 4mm different