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| longbord1 |
 Posted: Sat Jan 17, 2009 5:55 pm |
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Joined: 15 Jan 2009
Posts: 64
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I know most people realize, that bearings are designed for extreme rpms, nothing on a skateboard even comes close. So in the end your bearings don't really matter. Ceramic bearings would probably be great, if your bearings were spinning extremely fast and had a chance of getting extremely hot.
The only thing I think a ceramic would be good for is rain riding. |
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| Cappy |
| Posted: Sat Jan 17, 2009 7:06 pm |
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Joined: 13 Sep 2005
Posts: 11580
Location: Cloud cuckoo land
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| Bollocks! A bearing has to handle load and with that comes heat, regardless of rpm. |
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| Xgecko |
| Posted: Sat Jan 17, 2009 7:53 pm |
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Joined: 06 Sep 2008
Posts: 456
Location: Westerly RI
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| I have to agree with LB1 all the 608 bearings I have ever seen were rated to more than 30,000rpms most 34,000-38,000. heat rarely comes from load rather from dirt creating friction |
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| Cappy |
| Posted: Sat Jan 17, 2009 8:19 pm |
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Joined: 13 Sep 2005
Posts: 11580
Location: Cloud cuckoo land
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Cool, so we can use ball-less bearings in your "theory".
I don't know if you turned around a corner with 50mph or ollied down 10 stairs, but for me this sounds alot of load in "practice"! |
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| slob-air |
| Posted: Sat Jan 17, 2009 8:27 pm |
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Joined: 27 Oct 2001
Posts: 63453
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longbord1 wrote: I know most people realize, that bearings are designed for extreme rpms, nothing on a skateboard even comes close. So in the end your bearings don't really matter. Ceramic bearings would probably be great, if your bearings were spinning extremely fast and had a chance of getting extremely hot.
The only thing I think a ceramic would be good for is rain riding.
You don't have a clue. |
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| Xgecko |
| Posted: Sat Jan 17, 2009 8:40 pm |
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Joined: 06 Sep 2008
Posts: 456
Location: Westerly RI
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slob-air wrote:
You don't have a clue.
except that he is probably one of the fastest dowhillers here |
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It is almost like racism to seperate street skating and longboards. |
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| slob-air |
| Posted: Sat Jan 17, 2009 9:35 pm |
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Joined: 27 Oct 2001
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Doubtful. There's several racers in the ranks here. And I supply bearings to some of the fastest racers in the world.
But even if he were, his lack of understanding of engineering and physics is obvious. And his statements false.
It's not even worth arguing over, really, the science is there. Fact over fiction. |
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| meanis |
| Posted: Sat Jan 17, 2009 10:47 pm |
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Joined: 13 Jan 2009
Posts: 128
Location: melbourne australia
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| just my two cents worth, in my time i have ridden swiss reds, thousands of really cheap bearings such as bling rings and all those shitty 2 bit last a week sorta deals, i have also ridden modus blacks and modus ceramics, i would have to say that you really notice the differance of ceramics at slow speeds but bombing a hill riding exactly the same way on both bearings it only makes a differance of a few km's i clocked 55 on the ceramics and 53 on the blacks. and the price differance is roughly 150 dollars. for the reccord i had freshly cleaned both sets of bearings so they should of been running at their peak, if you ask me for day to day riding ceramics are worth is 100% but if its only making a few km's differance for hills then i dont see the point of spending 150 dollars more to get another couple of kays when you can get better wheels/deck/trucks |
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| thugfrm87 |
| Posted: Sat Jan 17, 2009 11:09 pm |
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ORDER OF THE SKULL
Joined: 22 Apr 2005
Posts: 2653
Location: Canada
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| Serious question: does type of lube or whether you have sealed bearings make a difference? I may reach 60 - 70 k in my travels, but I am asking about higher speeds. |
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| slob-air |
| Posted: Sat Jan 17, 2009 11:45 pm |
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Joined: 27 Oct 2001
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I've never cracked open a Modus so I can't speak to that.
thugfrm87 wrote: Serious question: does type of lube or whether you have sealed bearings make a difference? I may reach 60 - 70 k in my travels, but I am asking about higher speeds.
Type of lube absolutely. The ingredients are very important as is the filtering. For downhill and slalom racing, and cold temperature riding nothing beats Rockin Ron's Extreme lube. For everything else use is Rocket Propellant or Speed Cream.
Sealed bearings with a true labyrinth seal will keep the bearing cleaner, longer while keeping the lube where it needs to be.
Clean, properly lubed and broken in bearings will exhibit less friction and generate less heat and thus go faster.
Dirty, overheated bearings are slower and can experience failure. |
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