This is the TopTrail.
It uses a very sophisticated and complex combination of suspension, articulation, anti-dive and anti-squat brakes.
Those of you with an eye for detail will notice that the riding position is not the exactly the bolt upright Cleland style. So why have I included it as a modern Cleland?
The main reason is because its articulation system works in exactly the same way as the Cleland's. With a Cleland you stand upright on the pedals and let the whole bike articulate, see-saw style underneath you with a rowing motion of the arms as the handlebars rise and fall. The complex mechanism of the TopTrail allows this to be done whilst the handlebars and saddle remain virtually still.
Articulated suspension systems are not a new idea, the Model T Ford had an articulated front axle and modern military vehicles have combined articulation and suspension systems. However this is the first system I have seen used on a bicycle. It only works because of the anti-dive and anti-squat brake and indirect transmission systems stop the bike from behaving like a rocking horse.
The second reason is that it was made by Cleland Guru, David Wrath-Sharman. and designed by Adrian Griffiths
Checkout this videos on the TopTrail site.
With a normal suspension bike an impact pushes against a spring that in tern causes the the rider's body weight to react by moving and rotating away from the impact. On the TopTrail the spring is much weaker and the riders body weight is lifted only slightly without rotating. This is much more efficient than suspension alone, as the riders body moves less and so less damping is required in order to settle the system down.
http://toptrail.co.uk/docs/MB_suspensio ... 050606.pdf