Arahant January 4, 2013 11:23 PM interesting idea, although im not sure its so much of an innovation for this to be of significant use in the real world. I dont really know for sure though.. this seems like it would be good for people who delivered stuff via bike, i know bike couriers exist but im pretty sure that weaving in and out of traffic with a trailer/luggage thing wouldnt work well. Anne Ominous January 4, 2013 11:58 PM Ridiculous. Those wheels are far too small to make an effective bicycle trailer, especially under a load of any weight. The slightest pothole would jerk the rider around terribly, and maybe even off the bike. Slowburn January 5, 2013 02:47 AM re; Anne Ominous While I agree that bigger tires would be better I have pulled a heavily laden radio flyer with those narrow 8 inch tires without that kind of problem. Freyr Gunnar January 5, 2013 08:45 AM It's worth testing. It's a common issue to have to carry heavier/bigger stuff when you live in a city and only have a bike to move around. Bruce Miller January 5, 2013 08:32 PM For the new electric bikes with IBM's Super Batteries? http://www.gizmag.com/ibm-lithium-air-battery/22310/ IBM Lithium /Air battery, and the cusp of the “Electron Age” for all mankind! “IBM showed off its first lithium-air battery — a light-weight, ultra-high-density battery that should eventually find a home in electric cars,” I can hardly wait to see the new distance specs, speed means nothing to me, but distance and charging times matter! So do efficiency numbers. This opens amazing possibilities for bikes of all kinds! Michael Crumpton January 6, 2013 01:37 PM Great idea with a silly price. sell it for $25 more than a regular handtruck and you would sell a lot of them. At over $500 you could get a local welder to modify a $50 handtruck to do the same thing and have a couple of hundred left over. bergamot69 January 7, 2013 11:32 AM Does seem grossly overpriced, but I don't see it would be a major problem re-stability. After all, most potholes are not that deep, and the weight on the trailer shouldn't be great enough to cause more than a hiccup. However, it would be better still if the axle, when moved forward to act as a bike trailer, could be positioned on the end of a leaf spring so that it would deflect in the event of contact with a pothole, brick, etc, and if the coupling could allow for rotation (assuming it doesn't already). joshuabrasse January 7, 2013 01:10 PM Hey Arahant, thanks for the comment. Over the past few years there's been a huge bike, e-bike, scooter, and subsequent lightweight trailer boom here in Toronto. I've got a bike that has been my companion for over a decade, and a Honda Ruckus - both are my go-to's when I'm whipping around the city. The idea for the convert was born of necessity, and the combination dolly/trailer made sense to me, not only for those 2 functional purposes, but also, it means that I don't need to have/store 2 relatively big/bulky objects in my small living space, and I've really grown to hate moving - especially when I've got to deal with stairs (I've moved home or office close to 10 times over the last 10 years). I mocked up a working prototype, and have been really happy with it. Traffic hasn't really been an issue (city drivers are getting pretty used to seeing these things)... I've definitely got more compliments on it than haters! Hauling my hockey gear gets the most smiles for sure. joshuabrasse January 7, 2013 01:18 PM re; Anne Hi Anne, I can see how you might think the wheels are too small (actually the wheels in the renderings are a little smaller that the prototype), but we've used those so that the function of the dolly isn't compromised. Once in production, we'll be testing the size to have the perfect balance between the 2 functionalities. I know that bigger wheels would be better, but IMO it's a small compromise for the added benefits. joshuabrasse January 7, 2013 01:21 PM Re: Freyr Thanks Freyr. I'm loving the prototype, it's working out great. We'll be going into production shortly too. Can't wait!