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Old 12-27-2012, 11:14 AM   #21
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Old 12-27-2012, 12:22 PM   #22
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Quote:
Originally Posted by Volfy View Post
Not to geek out or anything, but assuming those little casters are about 1.5" in diameter, at 65mph, they'd be spinning at 14,570RPM.
Gotta be Asian
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Old 12-27-2012, 12:47 PM   #23
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Gotta be Asian
Why... (putting calculator back into pocket portector and pushing up taped glasses) would you guess that?
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Old 12-27-2012, 01:00 PM   #24
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Quote:
Originally Posted by Chris_5.0 View Post
Why???
1.5" diameter = 4.71" circumference

65 mile/hour = 68,640 inch/minute = (68, 640 inch/minute ) / (4.71 inch/revolution)

so, 65 mile/hour = 14,573 RPM

Source: http://www.onlineconversion.com/speed_all.htm

This, of course, assume the material (prolly hard butyl rubber or polyurenthane) of the wheel does not deform under centrifugal force and grow larger in diameter. In which case, the RPM would be slightly lower. Still high enough to smoke them bearings IMHO.

Now see what you made me do?! Geeking out big time on my lunch hour. Next thing you know, I'll be whipping out my tribology textbook to work out what the bearing temp is likely to be at 65mph steady state.
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Old 12-27-2012, 01:09 PM   #25
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Them sv riders, always trying to do things on the cheap.
Bahaha.
This is efficient to say the least!


Had to be an SV eh?
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Old 12-27-2012, 01:12 PM   #26
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Quote:
Originally Posted by Volfy View Post
1.5" diameter = 4.71" circumference

65 mile/hour = 68,640 inch/minute = (68, 640 inch/minute ) / (4.71 inch/revolution)

so, 65 mile/hour = 14,573 RPM

Source: http://www.onlineconversion.com/speed_all.htm

This, of course, assume the material (prolly hard butyl rubber or polyurenthane) of the wheel does not deform under centrifugal force and grow larger in diameter. In which case, the RPM would be slightly lower. Still high enough to smoke them bearings IMHO.

Now see what you made me do?! Geeking out big time on my lunch hour. Next thing you know, I'll be whipping out my tribology textbook to work out what the bearing temp is likely to be at 65mph steady state.
If they are the same bearings as skateboard bearings, they should be able to handle even faster RPMs.

I'd be more worried about the wheels melting.
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Old 12-27-2012, 02:27 PM   #27
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Quote:
Originally Posted by xtelevisionset View Post
If they are the same bearings as skateboard bearings, they should be able to handle even faster RPMs.

I'd be more worried about the wheels melting.
I recommend Swiss brand bearings for all rolling luggage when travelling 55 mph or above.
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Old 12-27-2012, 03:20 PM   #28
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Unless Louis Vuitton has a line of Valentino Rossi signature series of carry-ons, most of the ones I've seen have, uh... "plain" bearings. That is, plastic wheels riding on metal shaft.

Really though, I can't believe that thing would survive even a mile being dragged like that.
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Old 12-27-2012, 03:22 PM   #29
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Quote:
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I recommend Swiss brand bearings for all rolling luggage when travelling 55 mph or above.

Mmm Swiss Bearings... The only way to ride when it comes to skateboarding...
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Old 12-27-2012, 03:27 PM   #30
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Quote:
Originally Posted by Volfy View Post
1.5" diameter = 4.71" circumference

65 mile/hour = 68,640 inch/minute = (68, 640 inch/minute ) / (4.71 inch/revolution)

so, 65 mile/hour = 14,573 RPM

Source: http://www.onlineconversion.com/speed_all.htm

This, of course, assume the material (prolly hard butyl rubber or polyurenthane) of the wheel does not deform under centrifugal force and grow larger in diameter. In which case, the RPM would be slightly lower. Still high enough to smoke them bearings IMHO.

Now see what you made me do?! Geeking out big time on my lunch hour. Next thing you know, I'll be whipping out my tribology textbook to work out what the bearing temp is likely to be at 65mph steady state.
What about the expansion of said melting wheels. Will that not change the rpms
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Old 12-27-2012, 03:29 PM   #31
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Quote:
Originally Posted by Thayleal View Post
Mmm Swiss Bearings... The only way to ride when it comes to skateboarding...
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Old 12-27-2012, 03:31 PM   #32
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Quote:
Originally Posted by Chris_5.0 View Post
What about the expansion of said melting wheels. Will that not change the rpms
And don't forget to factor in the durometer of the wheels as well...
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Old 12-28-2012, 08:30 AM   #33
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I had a buddy pull me on a pitbike while I sat on one of those car creepers and those little plastic wheels only lasted about 5 minutes before they were melted. Granted they had more weight on them than just dragging a travel bag.
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