Why? because I wanted to change up the way I ride inside. Aluminum channel to contain the mess, my Kreitler rollers mounted in 1/4″ aluminum plate. Skateboard wheels. Bungie cords. They work well enough. I’m getting some vibration I didn’t notice on the original Kreitler frame – I might have a hop in a wheel – or the bit of flex I’m getting with the 1/4″ aluminum plate is throwing everything out of alignment just so. I might rework the inner carriage to remove the flex – and I need to find a stronger 12″ bungie – while sprinting this afternoon I managed to bottom out the forward and rear travel.
The sensation is quite nice – the rollers slide for and aft in the aluminum track as you apply power, stand, or shift gears. No more of that awkward body weight shifting to keep the bike from jumping off the frame. Ride (nearly) naturally – stand up, sprint, mash, spin high RPMs… so far its all worked.