March 18, 201412 yr How can a sprocket with less machining than ever before cost more than ever before, http://www.trialsuk.co.uk/products/jitsie-recessed-enclosed-rear-sprocket Utter nonsense.
March 18, 201412 yr look at the bright side it will be worth more in scrap value when your finished with it
March 18, 201412 yr Is it quite common for folk to lose there digits in the open sprockets? Never heard of it happening?
March 18, 201412 yr We`ve come full circle once again with design change. Could also be with the new weight limits it is now not necessary to cut every gram, even at the cost of performance. I`ve only seen one hand in the sprocket in over 40 years. People that are worried about people being injured should talk about proper catching of the bike. Front tire, front forks or handlebars is the only place to grab a bike.
March 18, 201412 yr I know of three in all happened when the rider fell off and just became entangled in the bike. Things happen so fast when a bike goes out of control.
March 18, 201412 yr the wheels will still have spokes and the sprocket will still have sharp teeth, so I don't buy the safety aspect, and were the sprockets not strong enough before? I've never known one crumble.
March 18, 201412 yr , and were the sprockets not strong enough before? I've never known one crumble. You must ride in no rocks, modern sprockets bend easily.
March 18, 201412 yr For sure, machined sprocket is more expensive than others simply cut on large press. Edited March 18, 201412 yr by cascao
March 19, 201412 yr Cascao is correct. Removing material by stamping is a far easier and cheaper process than machining a recess, with tolerances that are suitable for anodising.
March 19, 201412 yr Author You must ride in no rocks, modern sprockets bend easily. You must be hitting the sprocket off the rocks at 3omph to bend them For sure, machined sprocket is more expensive than others simply cut on large press. plenty of other cnc machined sprockets out there that would take longer to machine than that which are cheaper Cascao is correct. Removing material by stamping is a far easier and cheaper process than machining a recess, with tolerances that are suitable for anodising. tolerance doesn't effect anodising, surface finish does which in this case is irrelevant
March 19, 201412 yr The fact still remains that stamping a hole is a lot faster and cheaper than milling a recess
March 19, 201412 yr Author The fact still remains that stamping a hole is a lot faster and cheaper than milling a recess as said previously, other cnc'd sprockets with the pockets right through are cheaper
March 20, 201412 yr I can't believe how cheap riding trials and associated parts are.... see this !!! http://www.chainreactioncycles.com/shimano-dura-ace-fc7900-chainring/rp-prod38160
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