HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
<<  <  Page 2/5  >  >>
seansimp925
User Rank
Iron
seansimp925
User Rank
Iron
Re: Could be a bumpy ride
seansimp925   2/29/2012 7:44:26 AM
NO RATINGS
Myron Boyajian,

Fortunately for these guys, you are a member of the absolute tiniest porton of bicycle riders and your wants/needs are so wildly different than the average that ignoring you is the best thing they can do.

Cheers!

seansimp925
User Rank
Iron
Re: Great Mechatronics project
seansimp925   2/29/2012 7:36:30 AM
NO RATINGS
"Catch on" is not quantitative enough for me.

These guys could easily build a better mousetrap than Landrider who currently sells over $50mm of these automatic shifting derailleur bikes every year despite having a terrible reputation online.

Customizing gear selection is easy once you have a microcontroller on board.

Keep up the good work fellows and don't let the "bicycle experts" get you down.  

roboto
User Rank
Iron
Re: Colorado's BBEs (Bright Buding Engineers)
roboto   2/27/2012 5:04:37 PM
NO RATINGS
OK , Ozark. why did you post all of that? 

Most importantly we need to concentrate on the invention at hand created by three young men. They have more things to worry about than how to spell ohms or its meaning when in all caps.  Don't take away their thunder.  This is a brilliant idea and they have a working example.  Kudos.  Great job.

  

Rob Spiegel
User Rank
Blogger
Re: Great Mechatronics project
Rob Spiegel   2/21/2012 11:54:01 AM
NO RATINGS
Interesting link, Curious. Seems it didn't catch on. Could be that cyclists don't mind shifting gears. That may be the rub with this gadget. It also could be that gear selection is very individual, each rider making somewhat different decisions. Manual shifting customizes gear selection.

curious_device
User Rank
Gold
Re: Great Mechatronics project
curious_device   2/18/2012 11:00:35 PM
NO RATINGS
Then there's the all-mechanical version that was for sale in the late 1990's -

http://www.disraeligears.co.uk/Site/AutoBike_derailleurs.html

Rob Spiegel
User Rank
Blogger
Re: Great Mechatronics project
Rob Spiegel   2/16/2012 3:12:40 PM
NO RATINGS
This is a great Gadget Freak in a number of ways. As well as the quality of the gadget, the presentation was great as well. The three guys turned in a terrific set of build instructions, photos, and code. This is one of the best I've seen.

Rob Spiegel
User Rank
Blogger
Re: Colorado's BBEs (Bright Buding Engineers)
Rob Spiegel   2/16/2012 3:01:10 PM
NO RATINGS
I love that, Ozark Sage. OHMS! A nice peice of trivia when creating parts lists. 

Ozark Sage
User Rank
Silver
Re: Colorado's BBEs (Bright Buding Engineers)
Ozark Sage   2/15/2012 8:07:30 PM
NO RATINGS
Ben, Bill and Matthew interesting. I am sure other readers have sufficently commented on your design so I should like to make a comment on your (or another's) parts list and the use of the word Ohm, [George Simon Ohm] derivation: unit of electric resistance equal to resistance of a circuit in which a potential difference of one volt produces a current of one ampere

A resistor listed in a parts take-off with the ####(number) or CCCC (Color) to call out in it's ohmic value; ohmically in ohmage as read from an Ohm meter readout is in ohms

The capitalized plural OHMS is normally reserved and NEVER used since it means On Her/His Majesty's Service,  I really don't care but, our friends the Brits' are proud of their English language and, they had Webster's first! So guys sack this trivel piece of information away in your head until you need to pass it on to another future engineerand.

Matthew Stout
User Rank
Iron
Re: Weight
Matthew Stout   2/15/2012 2:48:54 PM
NO RATINGS
As Bill said, the added weight is very small. The servo motors are actually mounted where the water bottle holder was, so if anything it is lighter than having a water bottle there. And the weight on the handle bars is small, and it is not noticable for none racing situations. I was just reading an article about how (with some basic/simple approximations) every pound was about 6 seconds more on a 25 (or so) minute hill climb. The dynamics and drag will technically be effected by adding these components also, but it is very minor (not noticable) to anyone not racing.

Essentially, my point is that no the weight doesn't have an effect on this product for its application.

<<  <  Page 2/5  >  >>


Partner Zone
Latest Analysis
Samsung's Galaxy line of smartphones used to fare quite well in the repairability department, but last year's flagship S5 model took a tumble, scoring a meh-inducing 5/10. Will the newly redesigned S6 lead us back into star-studded territory, or will we sink further into the depths of a repairability black hole?
Fifteen European research centers have launched EuroCPS to help European companies develop innovative products for the Internet of Things.
Get your Allman Brothers albums ready. The iconic Volkswagen Microbus may be poised for a comeback, and this time it could be electric.
In 2003, the world contained just over 500 million Internet-connected devices. By 2010, this figure had risen to 12.5 billion connected objects, almost six devices per individual with access to the Internet. Now, as we move into 2015, the number of connected 'things' is expected to reach 25 billion, ultimately edging toward 50 billion by the end of the decade.
NASA engineer Brian Trease studied abroad in Japan as a high school student and used to fold fast-food wrappers into cranes using origami techniques he learned in library books. Inspired by this, he began to imagine that origami could be applied to building spacecraft components, particularly solar panels that could one day send solar power from space to be used on earth.
More:Blogs|News
Design News Webinar Series
3/31/2015 11:00 a.m. California / 2:00 p.m. New York
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
5/7/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Apr 20 - 24, Taking the Internet of Things to the Cloud
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Last Archived Class
Sponsored by Proto Labs
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service