TDF Ceramic bearings hot here
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TDF Ceramic bearings hot here
I heard that the Tour De France racers now use ceramic bearings because they increase performance. Yesterday another biker mentioned that they're selling like hot cakes at the bike shop.
They're supposed to reduce wear and tear on the bike and increase speed. Anyone know about them?
They're supposed to reduce wear and tear on the bike and increase speed. Anyone know about them?
Last edited by vrkelley; 07-25-06 at 01:23 PM.
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Found this on the Cycling News web site. Anyone tried these bearings to extend the life of wheels??
https://www.cyclingnews.com/sponsors/fsa/2006/2006.php
https://www.cyclingnews.com/sponsors/fsa/2006/2006.php
Another key initiative for Full Speed Ahead is the introduction of ceramic bearings.
For the last few years, Full Speed Ahead has been working with their extensive array of sponsored teams to test, improve, and refine an often neglected product that can provide significant performance advantages. FSA's Claudio Marra explained to Cyclingnews that "our testing shows that ceramic ball bearings are 20% more rigid, 10X rounder and 60% lighter than standard steel ball bearings, which reduces friction. We have found that using ceramic ball bearings can provide speed increases of up to 4%, or a forty meters distance gained over every kilometer."
FSA's ceramic bearings are not actually ceramic; they are made from pure, solid silicon nitride balls that are mounted in hi-spec carbon steel bearing raceways. To make them, the manufacturing process is long (70 days), complex and expensive. "First off, the ceramic powder is synthesized and pre-treated. Then the silicon nitride material is stamped into spheres, sintered, then specially ground and worked into a perfectly round shape before final assembly." But the cost is worth is, as Marra points out, the performance advantages and longevity (ceramic bearings outlast steel bearings by 5-20X) are real. Marra then explained that "we combine these ceramic bearings with super low-friction seals and a special lubricant in an optimized system; the advantages are hard to see with the naked eye, but you can tell on the bike."
Ceramic bearing kits are offered for FSA's own products, like the MegaExo crankset and RD-400/488/600/800 wheel series but also for many other brands of bicycle components.
FSA's Doug Stuart told us that "our ceramic bearings are a big breakthrough so we decided to make them for brands like Mavic, Zipp, Spinergy, Campagnolo Shimano and even Lightweight carbon wheels. Plus we offer ceramic bearings for Campagnolo Record and Chorus bottom brackets and even derailleur pulleys."
FSA is also busy creating a focused range of high-performance wheels that are designed and built as an integrated system. Perhaps they haven't received the attention they deserve but, like other top FSA products, they benefit from advanced materials and relentless attention to detail. FSA's top of the range wheelset for 2006 is the RD-488. This wheel is a real racing weapon, with a 50mm carbon fiber tubular rim laced to 20 spokes in front and 24 in back. FSA's RD488 wheels don't have just any old aero spoke, but custom drawn Wheelsmith AE-14 spokes. FSA specially designed these spokes to have not only a fast aero profile, but to also to absorb road vibration.
For the last few years, Full Speed Ahead has been working with their extensive array of sponsored teams to test, improve, and refine an often neglected product that can provide significant performance advantages. FSA's Claudio Marra explained to Cyclingnews that "our testing shows that ceramic ball bearings are 20% more rigid, 10X rounder and 60% lighter than standard steel ball bearings, which reduces friction. We have found that using ceramic ball bearings can provide speed increases of up to 4%, or a forty meters distance gained over every kilometer."
FSA's ceramic bearings are not actually ceramic; they are made from pure, solid silicon nitride balls that are mounted in hi-spec carbon steel bearing raceways. To make them, the manufacturing process is long (70 days), complex and expensive. "First off, the ceramic powder is synthesized and pre-treated. Then the silicon nitride material is stamped into spheres, sintered, then specially ground and worked into a perfectly round shape before final assembly." But the cost is worth is, as Marra points out, the performance advantages and longevity (ceramic bearings outlast steel bearings by 5-20X) are real. Marra then explained that "we combine these ceramic bearings with super low-friction seals and a special lubricant in an optimized system; the advantages are hard to see with the naked eye, but you can tell on the bike."
Ceramic bearing kits are offered for FSA's own products, like the MegaExo crankset and RD-400/488/600/800 wheel series but also for many other brands of bicycle components.
FSA's Doug Stuart told us that "our ceramic bearings are a big breakthrough so we decided to make them for brands like Mavic, Zipp, Spinergy, Campagnolo Shimano and even Lightweight carbon wheels. Plus we offer ceramic bearings for Campagnolo Record and Chorus bottom brackets and even derailleur pulleys."
FSA is also busy creating a focused range of high-performance wheels that are designed and built as an integrated system. Perhaps they haven't received the attention they deserve but, like other top FSA products, they benefit from advanced materials and relentless attention to detail. FSA's top of the range wheelset for 2006 is the RD-488. This wheel is a real racing weapon, with a 50mm carbon fiber tubular rim laced to 20 spokes in front and 24 in back. FSA's RD488 wheels don't have just any old aero spoke, but custom drawn Wheelsmith AE-14 spokes. FSA specially designed these spokes to have not only a fast aero profile, but to also to absorb road vibration.
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4 free meters per kilometer for the same effort is nothing to sneeze at in a TDF time trial, but for 99.99% of cyclists it would not make a noticible difference. It's also worth noting that these guys already have every available physical and technical advantage at their disposal. Their bike fit has been analyzed with power meters and wind tunnels. The average slob like me could probably get those 4 free meters by riding in the drops a little more. Those guys are already there.
Besides, what good are fancy bearings if they're only available in proprietary components that cost hundreds of dollars? My bearing are already paid for. Diminishing returns never deterred determined consumers with money to burn before, so I don't see why this would be any different.
Besides, what good are fancy bearings if they're only available in proprietary components that cost hundreds of dollars? My bearing are already paid for. Diminishing returns never deterred determined consumers with money to burn before, so I don't see why this would be any different.
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It's 40 free meters per kilometer. 4% faster is like going 20.8 mph instead of 20. Which is huge.
But I bet the 4% increase is at very low speeds compared to a hub with a lot of drag.
Longer life is a real plus! But do the bearing races last longer?
But I bet the 4% increase is at very low speeds compared to a hub with a lot of drag.
Longer life is a real plus! But do the bearing races last longer?
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Originally Posted by Phantoj
It's 40 free meters per kilometer. 4% faster is like going 20.8 mph instead of 20. Which is huge.
But I bet the 4% increase is at very low speeds compared to a hub with a lot of drag.
Longer life is a real plus! But do the bearing races last longer?
But I bet the 4% increase is at very low speeds compared to a hub with a lot of drag.
Longer life is a real plus! But do the bearing races last longer?
Ah - 40 meters. You're right. Definitely nothing to sneeze at and valuable in a racing situation, but this is the commuting forum. My team car usually gets stuck in traffic so I prefer 32 or 36 spoke wheels.
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I should get a freewheel and get the extra 40 meters per kilometer
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There may very well be a benefit, a substantial benefit, but it would be interesting to see independent data on the advantages. 'of up to 4%' is rather vague. But for the pro tour, every little bit counts.
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A 4% decrease in rolling resistance would be VERY noticable.
It would feel like dropping a tooth on the front cog (on my bike at least).
It would feel like dropping a tooth on the front cog (on my bike at least).
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Maybe on the flats 1mph isn't much but I'll bet the lower friction on hills would be a huge plus. No I don't race but arriving 15minutes earlier by going a few miles/hr faster would be great!
Bearings wear out, and bling prices usually drop when good ideas seem to catch on. Also commuters eventually tool up to alot of stuff seen on the TDF from a few years earlier - if the price is right. Perhaps they'll even start selling bikes with ceramic bearings.
Bearings wear out, and bling prices usually drop when good ideas seem to catch on. Also commuters eventually tool up to alot of stuff seen on the TDF from a few years earlier - if the price is right. Perhaps they'll even start selling bikes with ceramic bearings.
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I would be happy if I could commute even at 12 mph top speed on my bike .... i feel nostalgic
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I'd be happy to get to work alive...
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4% speed increase when changing from a passable average hub to ceramic wonderbearings is definitely bogus. It's just impossible because bearing drag is a tiny-tiny part of the eqation to begin with. Probably under 4%. Aerodynamic drag is the bulk of what you have to fight, then comes the rolling resistance of tyres. Bearing drag probably takes away less of you power input then the flexing of the frame, crank and bars. Definitely not worth throwing money at outside of racing.
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Originally Posted by slvoid
I'd be happy to get to work alive...
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#14
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I just gained 30m/km by reprogramming my bike computer to the correct tire size!
but I had been wondering how much of the wonderful change when I put new wheels on was from the new wheels themselves vs new unworn/unused bearings in the hubs.
but I had been wondering how much of the wonderful change when I put new wheels on was from the new wheels themselves vs new unworn/unused bearings in the hubs.
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Originally Posted by marqueemoon
Besides, what good are fancy bearings if they're only available in proprietary components that cost hundreds of dollars?
https://www.bocabearings.com/
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i just put some in the back wheel of my mtb.
they sure spin smooth and if you use a sight like bocabearings they ain't more than double the price of normal ones.
can i tell the difference? not really... my wheel does spin smooth though. the true test will be in about a year (when my last bearings gave up); since these are supposedly harder they should wear longer.
as for commuting.... my crosscheck will never be worth of such bling. a nice midlevel simano cup and cone hub will roll smooth for years without any need for maintenence, what could be better than that??? by the time you need new bearings in one of those hubs you'll probably have trashed the rest of the wheel anyway.
they sure spin smooth and if you use a sight like bocabearings they ain't more than double the price of normal ones.
can i tell the difference? not really... my wheel does spin smooth though. the true test will be in about a year (when my last bearings gave up); since these are supposedly harder they should wear longer.
as for commuting.... my crosscheck will never be worth of such bling. a nice midlevel simano cup and cone hub will roll smooth for years without any need for maintenence, what could be better than that??? by the time you need new bearings in one of those hubs you'll probably have trashed the rest of the wheel anyway.
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the commuter benefit of ceramic bearings is that they're grease-free (no maintenence) and corrosion proof. this only applies to the full-ceramic ones (balls, races, etc)
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Originally Posted by BrianJ1888
the commuter benefit of ceramic bearings is that they're grease-free (no maintenence) and corrosion proof. this only applies to the full-ceramic ones (balls, races, etc)
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Forget fancy bearings. I'm just gonna start doping.
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Originally Posted by marqueemoon
Forget fancy bearings. I'm just gonna start doping.