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  1. I've been MTB'ing for quite some time, and all bike I have ever known was a hardtail. And being considered still a green leaf by my old man, the hard-on-the-rear steed has served me well. Starting out on a 24 ton 24" mongoose working my way up to the now owned Silverback Syncra 27.5". My aim of MTB'ing is solely for fun, and the funny tan you get on you arms and legs that define a tan line. What I deem as the most fun style of riding is trails, at a place like Groenkloof. Hence the 650b wheel size suits me perfectly, no wagon-wheel 29ers nor slow-poke bumpy 26ers. At the awakening of spring I decided, after trying out and building some bikes, to upgrade my steed to a dual-suspension mid-travel 650b trail eating machine! This decision has lead me to tons of research concerning dually bikes, different types of suspension, and also to the three main problems of duallys which are brake jacking, pedal bob, and small bump compliance. Having time on my hands to kill and having a desire for creating my own things, I started learning how to use a CAD program to design, and maybe build one day, my own dual suspension frame. Starting with a few doodles I decided on a few basics, minimal chain growth, solid rear triangle, and as simple as possible. I was also playing around with the idea of having a single pivot design that pivots around your crankset. Keeping this in mind I started with Generation One. Which went well... Firstly I had NO idea how to do anything on this program, and I am still in the process of learning. I only got as far as deciding on the geometry, and molding creating some sort of tube for the seat and a odd looking head tube with bearing cups(I was quite impressed with myself there). I settled on a fair length, but on the shorter side chain stays and wheel base while maintaining a slack-ish head tube angle of 69deg, and a far reach. Soon I realized this was going nowhere extremely fast, as my geometry was well... to put it softly, absolute rubbish. Giving my impetuous design some more thought I dreamed up a chameleon styled frame that can take anything you throw at it. Any wheel size, and any travel up to 160mm, front and rear, and suiting to nearly any riding style. With that I moved on to Generation Two, which might be a tad bit better. Generation Two proved much more promising that its predecessor, and I felt I might have something good here. Being more well versed in the language and usage of the CAD program, I set out with a sketch deciding on the geometry. Sticking to the slacker head angle of now 68.5 and keeping the chainstays and wheelbase short but the reach long. I considered the change of the geometry more with the change of wheel sizes and travel when designing Gen Two This one I actually finished with a simulation of what the shock would do during the travel. As much as I liked the simplicity of the design, the angle at which the shock changes was too great, which will give poor small bump compliance and will promote bottoming out, rather than resisting it. So I finally had a design, but improvements still needed to be made. Thus I press onward to Generation Three. I threw everything I had at this model, and I toyed around a bit with the CAD program just to learn the ropes. The geometry I gave another whack and fine-tuned it even further to accommodate the changes the different wheel sizes will bring as well as the changing travel. The result was quite satisfying. To be continued...
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