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#1
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Mavic Ksyrium ES bearings
Recently a friend and I succumbed to bicycle advertising and bought
Mavic Ksyrium ES wheels. In both cases, they seem to spin with less ease than our previous wheels (his were Ultegra, mine Campy Daytona hubs with conventional spokes and rims). I asked about this at the LBS, and was told that the seals on the bearings cause some drag and need to be "broken in". I've ridden mine about 800km, and indeed the wheels spin more easily. Likewise, the bike does seem to go faster than with my previous conventional wheels, especially downhill when my speed is highest. I do realize that some of this perception may be psychological, but I do hit higher top speeds going down my familiar local hills than I did in the past (my bicycle is otherwise unchanged). I did do some adjusting of the preload with the pin wrench that came with the wheels, and this did seem to help. Likewise, the cassette did not spin as easily on the Ksyriums as on my old hub. Have others noticed these "draggy" bearings? Do they in fact "break in"? Is there anything that can be done? Is this a ploy to get us to upgrade to ceramic bearings, and would they actually make this better? Paul |
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#2
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Mavic Ksyrium ES bearings
Paul wrote:
Recently a friend and I succumbed to bicycle advertising and bought Mavic Ksyrium ES wheels. In both cases, they seem to spin with less ease than our previous wheels (his were Ultegra, mine Campy Daytona hubs with conventional spokes and rims). I asked about this at the LBS, and was told that the seals on the bearings cause some drag and need to be "broken in". I've ridden mine about 800km, and indeed the wheels spin more easily. Likewise, the bike does seem to go faster than with my previous conventional wheels, especially downhill when my speed is highest. I do realize that some of this perception may be psychological, but I do hit higher top speeds going down my familiar local hills than I did in the past (my bicycle is otherwise unchanged). I did do some adjusting of the preload with the pin wrench that came with the wheels, and this did seem to help. Likewise, the cassette did not spin as easily on the Ksyriums as on my old hub. Have others noticed these "draggy" bearings? Do they in fact "break in"? Is there anything that can be done? Is this a ploy to get us to upgrade to ceramic bearings, and would they actually make this better? do you want seals that seal, or just look good? because if you want the former, you have a sacrifice to make. but you'll be relieved to learn that at higher speeds, the drag decreases, so it's only when you're being a slug that it makes any difference. as for the freehub body, remove it and lube once in a while. qspc recommends synthetic motor oil, and i've used it too. seems to work. but an unlubed delrin bearing can't slow you down unless you're coasting. |
#3
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Mavic Ksyrium ES bearings
On Jun 9, 10:25*pm, Paul wrote:
Recently a friend and I succumbed to bicycle advertising and bought Mavic Ksyrium ES wheels. *In both cases, they seem to spin with less ease than our previous wheels (his were Ultegra, mine Campy Daytona hubs with conventional spokes and rims). *I asked about this at the LBS, and was told that the seals on the bearings cause some drag and need to be "broken in". *I've ridden mine about 800km, and indeed the wheels spin more easily. *Likewise, the bike does seem to go faster than with my previous conventional wheels, especially downhill when my speed is highest. *I do realize that some of this perception may be psychological, but I do hit higher top speeds going down my familiar local hills than I did in the past (my bicycle is otherwise unchanged). *I did do some adjusting of the preload with the pin wrench that came with the wheels, and this did seem to help. Likewise, the cassette did not spin as easily on the Ksyriums as on my old hub. Have others noticed these "draggy" bearings? Do they in fact "break in"? Is there anything that can be done? Is this a ploy to get us to upgrade to ceramic bearings, and would they actually make this better? Paul 'Sealed' bearings have a rubber 'seal' and these will always be more draggy than cup and ball bearings(like the ultegra and Centaur if 2006) which are sealed better with labyrinth seals. The only way to make them 'better' is to remove the seals, bad idea, BTW. Cheaper to make hubs this way since no cup needs to be made for the nug for the bearings to live in. Not sure why these, with such a draggy, 2 pawl rear hub, is so expensive. Ceramic bearings empty your wallet and little else in spite of the shill you hear on adverts and certain web sites. |
#4
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Mavic Ksyrium ES bearings
Qui si parla Campagnolo wrote:
Ceramic bearings empty your wallet and little else in spite of the shill you hear on adverts and certain web sites. In a letter to FIETS magazine, after these questioned the effectiveness of ceramic bearings, a guy made the very enthousiastic comment that he "only" paid 475 Euro's for ceramic bearings in his Ksyriums and RD. Speaking about the effectiveness of marketing. O yeah: of course he noticed significant less resistance, in spite of a lab test by TOUR that showed a result that could hardly be measured. Derk |
#5
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Mavic Ksyrium ES bearings
On Jun 10, 6:22*am, Derk wrote:
Qui si parla Campagnolo wrote: Ceramic bearings empty your wallet and little else in spite of the shill you hear on adverts and certain web sites. In a letter to FIETS magazine, after these questioned the effectiveness of ceramic bearings, a guy made the very enthousiastic comment that he "only" paid 475 Euro's for ceramic bearings in his Ksyriums and RD. Speaking about the effectiveness of marketing. O yeah: of course he noticed significant less resistance, in spite of a lab test by TOUR that showed a result that could hardly be measured. Derk Lots of silly things in bikes these days but some, like compact frames, oversized handlebars, internal headsets do have a few advantages. Small rider fit, safer light handlebars, easier to weld/ afix big tubes=safer frames, etc. BUT ceramic does little/nuthin. |
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