Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Fifty Plus (50+) Share the victories, challenges, successes and special concerns of bicyclists 50 and older. Especially useful for those entering or reentering bicycling.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 06-16-05, 09:37 PM   #1
LastPlace
Senior Member
Thread Starter
 
Join Date: Jun 2005
Bikes:
Posts: 776
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
There is a saying that if you remember the '70s you were not there and one of the many things I don't remember is math. Since my computer doesn't average speed does anybody have a formula that lets me enter milage and time to get an average or does anyone know where I can find a chart.

For example, Tuesday we did 20 miles in 1hr, 36 minutes and today we did the same 20 miles in 1hr and 15 minutes. How does an aged brain do the math?

LastPlace
LastPlace is offline   Reply With Quote
Old 06-16-05, 10:12 PM   #2
Digital Gee
I need more cowbell.
 
Digital Gee's Avatar
 
Join Date: Jun 2005
Location: Reno, Nevada
Bikes: 2015 Specialized Sirrus Elite, 2012 Masi Evoluzione
Posts: 8,111
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The first time, you rode an average of 12.5 mph. The second, you rode an average of 16. In the first instance, you rode 1.6 hours (36 minutes = .6 of an hour), and in the second run, you rode 1.25 hours. Divide both by 20 miles and you'll get these results.

And avoid appearing on NPR's Whatdya Know, with Michael Feldman, because you will get the question wrong if the category is Things You Should Have Learned in School. :-)
__________________
2015 Sirrus Elite
2012 Masi Evoluzione

Proud member of the original Club Tombay
Digital Gee is offline   Reply With Quote
Old 06-16-05, 10:21 PM   #3
Longhorn
Burnt Orange Blood
 
Longhorn's Avatar
 
Join Date: Apr 2005
Location: Dripping Springs, Texas
Bikes: Trek 7200, Lashout Electric Bike, Raleigh Talon
Posts: 825
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The formula is Distance = Rate*Time. So you can divide the distance by the time (in hours, since you want miles per hour) to solve for the rate.

(Just a generalization of the calculators that Digital Gee did for you. I teach math so I couldn't resist. )
Longhorn is offline   Reply With Quote
Old 06-16-05, 10:37 PM   #4
JavaMan
Senior Member
 
JavaMan's Avatar
 
Join Date: Sep 2004
Location: Southern California
Bikes: 2013 KHS Flite 747
Posts: 1,068
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
This spreadsheet may be easier for you to use.
JavaMan is offline   Reply With Quote
Old 06-17-05, 05:53 AM   #5
RonH
Life is good
 
RonH's Avatar
 
Join Date: Jan 2001
Location: Not far from the Withlacoochee Trail. 🚴🏻
Bikes: My beloved 2001 Litespeed Tuscany and my 2014 Cannondale SuperSix EVO Hi-Mod
Posts: 16,103
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 38 Post(s)
Example: time = 2 hours and 17 minutes. distance = 38.6 miles

First convert the hours (2 hours) to minutes by multiplying them by --> 60. 2x60=120

Then add the minutes (17 minutes) to that number. --> 120+17=137

Now divide by 60 to get the decimal equivalent. --> 137/60=2.283

Now divide the miles (38.6 miles) by the time (2.283). --> 38.6/2.283=16.9 mph
__________________


The LORD is merciful and gracious, slow to anger, and plenteous in mercy. - Psalm 103:8
RonH is offline   Reply With Quote
Old 06-17-05, 12:10 PM   #6
LastPlace
Senior Member
Thread Starter
 
Join Date: Jun 2005
Bikes:
Posts: 776
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks folks. It's all coming back to me.....at least I think so.

LastPlace
LastPlace is offline   Reply With Quote
Old 06-19-05, 08:54 AM   #7
Garfield Cat
Senior Member
 
Garfield Cat's Avatar
 
Join Date: Oct 2004
Location: Huntington Beach, CA
Bikes: Cervelo Prodigy
Posts: 5,964
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
The easiest thing to do is to buy a new cyclometer. They're relatively inexpensive for the low end models and you should be able to get the average speed feature with it. Today is Father's day and maybe you'll get one today. If not, whatever you get, exchange it for a new cyclometer.
Garfield Cat is offline   Reply With Quote
Old 06-26-05, 09:05 PM   #8
LastPlace
Senior Member
Thread Starter
 
Join Date: Jun 2005
Bikes:
Posts: 776
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Garfield,
Thanks for the reply. I have had a basic Sigma for the last year but it did not have an
average speed function. Last night I put on my TOPEAK Panoram V12 and so far so good,
and yes it does have an average speed function. Eighteen miles at 11.8 mph. Nice easy
ride.

LastPlace
LastPlace is offline   Reply With Quote
Old 07-02-05, 02:18 AM   #9
chroot
Newbie Extraordinaire
 
Join Date: Jul 2004
Location: Just outside San Fransicsco
Bikes: Trek 1000
Posts: 556
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Let me introduce you to the google calculator, which is perfect for doing math with various units. If you want to know your average speed, go to www.google.com and type in "20 miles / 96 minutes in mph" and hit enter. Click this link to see what it looks like:

http://www.google.com/search?hl=en&l...ph&btnG=Search

- Warren
chroot is offline   Reply With Quote
Old 07-02-05, 06:35 PM   #10
jjj606
Junior Member
 
Join Date: Jun 2005
Location: ohio
Bikes:
Posts: 16
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yes, google calculator is the way to go.
"20 miles / 1 hour 36 minutes in mph" also works.
"15 mph in feet per second" = 22 feet per second
"1 3/8 inches in mm" = 34.925 mm
jjj606 is offline   Reply With Quote
Old 07-02-05, 08:44 PM   #11
LastPlace
Senior Member
Thread Starter
 
Join Date: Jun 2005
Bikes:
Posts: 776
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks for the help. I bought a Panoram v12 and it does all the math for me, i.e.
it averages speed but thanks again.

LastPlace
LastPlace is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 01:23 PM.