Lapierre had one on their DH920 rig a few years back. I would suggest going for polycarbonate and putting a bit of elbow grease in with the dremel/jigsaw/wet n dry sandpaper
I remember Tahnee in a video from a few years back at Champery almost clearing this massive jump, crashing, then pushing up for another go. I was impressed that she even attempted it in the first place. In a few years i can see her dominating if she can stay injury free.
Yes, the ratios selected as the leverage points of the mechanism move from one gear to the next. I'm not 100% sure on the specifics of the ban, but know that it was related to the amount of selectable ratios. It may have even applied to the very first version which was basically a scooter cvt in...
The only difference a trigger shifter would make is that you cycle through to the next gear in a quicker more accurate manner, you still have to cycle through a number of ratios to end up at the next gear.
My understanding is that the UCI specified that you must have a finite number of gears. Even when using a thumb shifter and the Honda cam arrangement, you are still accessing a constantly changing gear ratio mid shift.
It made a ton of noise due to having 4 ratchets constantly rotating back and forth, Also it was probably a little maintenance heavy. The major players could make mech in a box specific stuff, but probably dont because it would last too long before needing to be replaced.
To be honest, i think its not unique to the cycling industry. Generally if point A is where current products are at, and point Z is where they could be at it manufacturers really wanted it, we get releases B, C, D etc as there's more profit in planned obsolescence. Apple for example are...
Paypal are notoriously lax with people claiming they didnt recieve their goods and reversing the transaction, then you owe paypal the money and the scam artist has your bike. The $850 was maybe a confidence building thing.
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