Trailer Design Iterations

It's nice to now think only about bike trailers and not pooper scoopers, but anyway...

So, after totally being called on just emulating (a nice way to say, knocked off) the Burley Travoy, I'm back to the drawing board on the frame design. I'm still aiming for the same set of parameters for the trailer when I initially set out on this project,

• walkable and bikeable
• lightweight
• stable w/ load (riding or walking)
• customizable bag options

So initial ideas all followed the Travoy model of flat bed, foldable, support structure around the bed. I played with ideas for adding a third wheel for walking as I perceived the Travoy to be a bit tippy when standing upright (especially when loaded) as it stood on two wheels and a small leg. My goal was when walking to have at least 3 wheels on the ground for stability.

My methodology for joining the metal tubes (plastic housings basically) also was derived from the Travoy. In my trailers new form, I'll mostly likely use a similar joint as this seems to be the best and most elegant method. Also, this drawing came out well.

In sketching for the new frame I decided to work off of a single main tube as the backbone of the trailer with the main support wheels moving in towards the frame for riding and out to create a tripod with a castored wheel for walking. Walking stability was a high point with this iteration.

A guide slid up and down the main tube, keeping the wheels lined up.

The sliding guide however took up quite a bit of space on the tube that could other wise be used for mounting a frame for cargo. Thus only the top and bottom of the tube could be used for mounting, with a aimed cargo weight of 60 lbs, this would create quite a bit of stress and would need large amounts of reinforcement at the junctures adding complexity and weight.

To combat the sliding ring, a grooved guide was added to the side of the main tube, keeping the wheel struts in alignment and clearing room for more cargo supports. The raising and lowering of the legs would be accomplished by a lever on the top of the main tube connecting via cables and pulleys inside the tube to the wheel struts. Pull the cable up and it would pull the wheels in to the frame for riding. An issue with this was locking the wheels in place and the extra complexity of the pulleys and guide wheels. The more moving parts mean the more to go wrong. I realized I was moving away from Dieter Rams 10 principles, and was making the trailer more and more complex. The more complex, the greater the possibly of a mechanical failure.

So, in this vein of simplicity with stability, I'm working on elimination of as many moving parts as possible. Goodbye cables and pulleys.

This is the latest scanned sketch I have (I know, its super rough), moving the two main support wheels to be stationary (to eliminate as much stress on a joint as possible) and moving the castored wheel to the fold down third wheel. This is the direction I'm currently moving the trailer in, presently in Rhino, with the aim to be making a physical model out of pvc pipe starting the 8th.

Thanks for reading.

CyCle. An Everyday Solution to an Everyday City.

I presented my commuter bicycle concept to my Sketching Ideas class yesterday. It went really well. I'll let my images speak for my design and the target consumer. 

This project was conceived, rendered and presented in a little over 3 weeks.

Oh, the presentation went perfectly. I was told I had a great idea and certainly the best delivery of the idea. One classmate commented, that my presentation convinced him that he needed one too! Which, is good!

Thanks for reading!

Two Weeks.

Phew, only 2 weeks left this semester. Everything is happening all at once, each studio has a project due in the next week and then I've got a week to really pull my sophomore review together.

I realized looking back through my posts this semester that the only class I'm really blogging about is CFC 3 and Designer Bootcamp (to a lesser extent). That's really a shame, because all my classes have been really interesting and challenging.

I don't think I've really said much about the myPod since the first model, but I'm finished with it now. I don't have any pictures of the finished model, it went into a display case pretty quick. So I'm waiting to get it out and take some pictures. You can check it out at my website, umich.edu/~petemh. I'll probably end up posting the finished images there first.

I'll just get you up to speed on Dimensional Languages (a design semiotics course) and Sketching Ideas here quick.

For dimensional Lang., we spent the first half of the semester working on buttons. I felt we were kind of spinning our wheels, the project should have lasted half as long, but I believe now that I felt that way because I was never really engaged with the project and never completely understood what Jan Hendrick (the prof) was trying to teach us. For the last month we've been working on salt and pepper shakers, or grinders in my case, that are inspired by prose, poetry and factual text on salt and pepper. It's been one of the most challenging project I've ever worked on, but I am really learning allot about the intimacy and language of form.

I spent most of the project trying to encompass both a salt and pepper grinder in one form, but really got stuck and never really moved past something that looked like a finger. So, I completely reworked the design this past week, working on grinders that for one, separated salt and pepper like normal, and worked on a squeezing motion. You squeeze the lever, it turns the grinder. I'm ironing out the form details this weekend and I'm going to have the most promising forms printed on the rapid prototyping machines from Rhino and pick my final model from there. I'm really excited about this project.

My first sketch model.

The creepy finger version. The whole thing rotated about the cut lines. Salt came from the top, pepper the bottom. The grand failure of this model is that I have to explain that to you.

Even if the idea did suck, I didn't let it go. Here are Rhino models I pretty much wasted my time on. Oh well, learn from your mistakes!

Early squeeze versions.

In Sketching Ideas, we've spent the whole semester drawing. Not still life or figure drawing, but drawing out ideas so as to effectively portray your concepts. It's pretty much an industrial design sketching course. Which is just perfect. It's taught by a designer for Ford, Chiwei Lee, who is pretty awesome himself. I've never had as much work for a course as I have for this one, but I am certainly getting better at sketching.

I'm working on my final design project for Sketching Ideas, we got to define our own project. I'm working on designing a commuter bicycle for people in the city and am trying to look at the bicycle and it's accessories as a system, integrating everything together to work as one perfect machine. Of course, being a biker, I am in love with this project. It's a hell of a lot of drawing though.

Oh and for our final project in Designer Bootcamp, we are all working on a few different projects as a class, I picked redesigning a pooper scooper. I'm not as invested in this project as I am in the bike, but they can't all be the coolest project ever.

Oh, and of course, there's always sophomore review to think about right now too. I've got the basis of it together, my theme is Simple Problems Are Incredibly Complicated. I'm focusing my presentation, which is pretty much a summing up of the past two years of A&D, on the myPod, salt and pepper grinders, ant farm from CFC III, commuter bicycle, and my branded baby puzzle from CFC II. I've still got some planning and to do for the presentation, which is April 24th for me.

Oh, my digital portfolio has been updated. umich.edu/~petemh Tell me what you think!

Thanks for reading!