Page 1 of 2 12 LastLast
Results 1 to 10 of 16

Thread: Icon Wheelchairs - wider front end CAD concept and prototype

  1. #1

    Icon Wheelchairs - wider front end CAD concept and prototype

    Here's the design to date of the wider front wing:

    Attachment 43660

    Attachment 43662

    Attachment 43663

    Attachment 43664

    This guy is able bodied, with big legs, 6'2" and has size 14 steel toe shoes with wide soles on, and is sitting with his feet not touching - in fact about a 1.5" gap between them.

    Please ignore the bolts, it's a rough prototype - the drawings above are reflective of how it will be when it goes to production.

    Attachment 43666

    The way we'll fabricate this will also allow us to make smaller wings too, with smaller footrests, and we're working on parts that will clip onto the front and "cup" people's legs for comfort - sort of like how the arm rests on aero bars on a time trial bike work.

  2. #2
    Quote Originally Posted by JeffAdams View Post
    Here's the design to date of the wider front wing:
    .
    Why you don`t contact guys like Oracing or others and offer the front part customized like customer would like, i don`t think that would increase you much the price, like that way a customer could have his Icon with the front frame made exactly to his specs.

  3. #3
    Senior Member DaleB's Avatar
    Join Date
    Sep 2006
    Location
    Tidewater, VA
    Posts
    5,408
    Nice work, Jeff. I think it looks good, (fits the design aesthetic), and will help the Icon fit...more.

    Cheers!
    __________________

    He who hears not me but the Logos will say: All is one.

  4. #4
    It looks like the ability to adjust the wheelbase also improves a little. It seemed that nearly all the early recipients brought their front wing all the way in. This design looks like one could telecope it out a bit more without the cross bar being an issue. Nice job figuring out some complex curves.


  5. #5

    Look forward to getting that for my A1!

  6. #6
    Hey Jeff do you know how much wider it is? I like the width of the foot plate as it is now just need it a bit wider up top. Might be one of those things a guy will have to try to know for sure. Looks good!

  7. #7
    Quote Originally Posted by totoL1 View Post
    Why you don`t contact guys like Oracing or others and offer the front part customized like customer would like, i don`t think that would increase you much the price, like that way a customer could have his Icon with the front frame made exactly to his specs.
    For a couple basic reasons - first, because I don't control the quality in that scenario, but more because I disagree fundamentally with fabricating parts or whole chairs to the specifications of consumers who are not trained designers or engineers.

    I know that it works in practice, and that the custom wheelchair industry has traditionally let consumers help drive changes and innovation, and there have been some great inventions by consumers who aren't formally trained. Having said that, there have also been a lot of experiments that went really, really badly. I've seen racing chair forks snap because the consumer/athlete/market was all about making it lighter and lighter, and the guy building it was ok with trial and error fabricating - a good friend of mine from New Zealand had to have reconstructive facial surgery because of that.

    It's a fine scenario and business model for outfits like Oracing (they build great chairs), and fine for consumers who have a specific need, don't really care about testing, and are willing to take a risk. There are some scenarios where it's probably ok to do trial and error fabricating, but others where it's just not.

    As a wheelchair user, I agree with building things that are perfectly fine as custom equipment, and because of the nature of adaptive equipment, sometimes the only way to get something exactly right is to do a totally custom build, but for Icon, it just doesn't work.

    If Oracing wants to build a front end that goes on the Icon, they're welcome to do it, but they'll never get an official stamp of approval from Icon or from me personally to do it. If someone else builds things, I don't control the quality, I don't control the design, and anything can happen, in the sense that when you build a "one-off" part without proper testing or engineering, you can be very confident in your guts with it (because of experience, or history, or a bunch of other elements), but you can't ever be sure if and when it's going to fail.

    (You may be noticing that I have a bit of a "thing" for controlling what I can)

    If a consumer wants to assume that risk, then they have every right to do that, but I'm not willing to, and Icon won't put anything out into the market that hasn't been tested and gone through our engineering process.

    @PeteSchick - you'll be getting a little brown box as soon as we start cranking them out, and anyone else who bought an Icon and wants the wider wing will also be given one to replace their current front end.

    @SCI_OTR - you are correct, sir. Thanks for the compliment, I'll pass it along to the people who did the actual figuring out of the curves.

  8. #8
    Well said.
    And the truth shall set you free.

  9. #9
    Senior Member BriRi's Avatar
    Join Date
    Apr 2011
    Location
    Central, TX
    Posts
    117
    Quote Originally Posted by SCI_OTR View Post
    It looks like the ability to adjust the wheelbase also improves a little. It seemed that nearly all the early recipients brought their front wing all the way in. This design looks like one could telecope it out a bit more without the cross bar being an issue. Nice job figuring out some complex curves.
    Exactly.... I can't extend the front to increase wheelbase without crunching my calfs.... I'm 6'2" with size 11 shoes

  10. #10
    Quote Originally Posted by totoL1 View Post
    Why you don`t contact guys like Oracing.
    I told guys like oracing, not oracing, is not the same, i suppose you`ve got guys in Canada that know how to weld aluminium, and your engineres could control the front ends.
    But dosen`t matter for get it, i must not tell you how to do or try to improve, seem like you are only interesting in production in series.

Similar Threads

  1. Replies: 4
    Last Post: 11-29-2011, 02:28 PM
  2. Icon Wheelchairs - new front end design
    By JeffAdams in forum Equipment
    Replies: 61
    Last Post: 11-20-2011, 12:30 AM
  3. Photos: Icon prototype. Feedback requested.
    By -scott- in forum Equipment
    Replies: 25
    Last Post: 04-14-2011, 12:30 AM
  4. Concept wheelchairs
    By carbar in forum Equipment
    Replies: 8
    Last Post: 04-21-2006, 09:27 AM
  5. Replies: 4
    Last Post: 01-18-2004, 12:55 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •