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-   -   mph vs km (https://www.bikeforums.net/road-cycling/531966-mph-vs-km.html)

viros20 04-17-09 08:53 AM

mph vs km
 
how do you have your cycle computer settings?


I just switched it to KM so I can get a better gauge while watching the pros on the TV, I suck at converting to mph in my head.

For cool style points I also switched the language to french which looks good. Dont belive me? "Le heure" looks alot better on the display than plain old "time"

Dont even think about switching the language to Italian unless you have a full campagnolo groupset or an Italian frame. You will actually get the opposite effect and lose any style points if you break that rule

AEO 04-17-09 09:07 AM

mph x 1.6 = km/h

andr0id 04-17-09 09:07 AM

English and miles. I wish my Garmin had Italian, but only English, French, Spanish and Portuguese.

Velocita sounds so much cooler than speed.

Jynx 04-17-09 09:27 AM

English and miles.

I use rough approximations

40kmh = 25mph

Do the math from there in your head.

20kmh = 12.5mph
60kmh = 37.5mph (~40mph)
ect..

urbanknight 04-17-09 09:40 AM

mph. I'll switch to kmh when I hit 62 mph, so it can read 100!

alcjphil 04-17-09 09:49 AM

We use the metric system here, so for me it is a no brainer. Somehow, kilometers seem natural to me for bikes, a 100 km ride sound so much better than 62.5. As for language, even though I speak French well, I just stick to plain old English. The idea of using Italian or Spanish does appeal, cycling terms in those languages seem so exotic.

AEO 04-17-09 09:54 AM


Originally Posted by AEO (Post 8748012)
mph x 1.6 = km/h

km/h ÷ 1.6 = mph


100miles = 160.9344km

bdcheung 04-17-09 09:55 AM

mph. I need to know if i'm speeding.

tombailey 04-17-09 09:56 AM

I don't display speed. Distance I view in miles.

carpediemracing 04-17-09 10:09 AM

When trying to measure small increases in speed, I went to kph to get better granularity. Now that I can't go fast anyway, I'm in mph.

cdr

seb1041 04-17-09 10:14 AM


Originally Posted by viros20 (Post 8747895)
For cool style points I also switched the language to french which looks good. Dont belive me? "Le heure" looks alot better on the display than plain old "time"

Change your computer to Europe time.

I ride faster in km/h

rousseau 04-17-09 10:18 AM

A rate of speed versus a distance? What kind of question is this?

A weird one. But even so, I'll take distance every time.

rollin 04-17-09 10:27 AM


Originally Posted by bdcheung (Post 8748414)
mph. I need to know if i'm speeding.

kmh, I need to know how far under the speed limit I'm riding.

bdcheung 04-17-09 10:36 AM


Originally Posted by rousseau (Post 8748609)
rate of speed

isn't that redundant?

urbanknight 04-17-09 10:41 AM


Originally Posted by bdcheung (Post 8748734)
isn't that redundant?

No

bdcheung 04-17-09 10:43 AM


Originally Posted by urbanknight (Post 8748773)
No

speed is a rate, right? at least, instantaneous speed... http://upload.wikimedia.org/math/3/a...0bb8250750.png?

Unless by "rate of speed" the OP means "acceleration", which would be technically correct as a=dv/dt

urbanknight 04-17-09 10:52 AM


Originally Posted by bdcheung (Post 8748782)
speed is a rate, right? at least, instantaneous speed... http://upload.wikimedia.org/math/3/a...0bb8250750.png?

Unless by "rate of speed" the OP means "acceleration", which would be technically correct as a=dv/dt

:p Psht. You math people only accept one definition for anything. I found 26 definitions for "rate" here. Here's #2:


2. a certain quantity or amount of one thing considered in relation to a unit of another thing and used as a standard or measure: at the rate of 60 miles an hour.

AEO 04-17-09 10:55 AM

could be acceleration, which is rate/speed, m/s/s

wideAMG 04-17-09 10:59 AM


Originally Posted by viros20 (Post 8747895)
Dont even think about switching the language to Italian unless you have a full campagnolo groupset or an Italian frame.

so that's what's happening to my polar? :thumb:
ringraziamento


there are people on earth that still use MPH?

the metric system has been in use since the 1700s.

Jynx 04-17-09 11:04 AM


Originally Posted by bdcheung (Post 8748782)
speed is a rate, right? at least, instantaneous speed... http://upload.wikimedia.org/math/3/a...0bb8250750.png?

Unless by "rate of speed" the OP means "acceleration", which would be technically correct as a=dv/dt

you knew what was meant. no need to argue semantics.

bdcheung 04-17-09 11:05 AM


Originally Posted by Jynx (Post 8748936)
no need to argue semantics

but this is the internet

Jynx 04-17-09 11:06 AM

you'll drive yourself crazy trying to correct all the errors on bike forums, especially when it comes to math. just read any timmyquest post :innocent:

bdcheung 04-17-09 11:08 AM


Originally Posted by Jynx (Post 8748953)
you'll drive yourself crazy trying to correct all the errors on bike forums, especially when it comes to math. just read any timmyquest post :innocent:

i'm not on a mission or anything

but if I see an opportunity and I'm in the mood, I'll take it.

rousseau 04-17-09 11:16 AM


Originally Posted by bdcheung (Post 8748942)
but this is the internet

I believe the proper term is internets.

Randochap 04-17-09 11:23 AM

Is there an international language on the internets for speed measurement? Besides KBps, that is?


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