A little shameless self-promotion. Hope people don't mind... I suspect a number of the active posters to the list know this already, but for newer folks and lurkers, a few years ago Bicycle Quarterly published some research conducted by Frank Berto (he was the Bicycling mag tech editor, way back when they had tech) that showed about a 15% sidewall drop was the optimum trade-off between tires that were pumped too hard and would lose energy to road imperfections and tires that were too soft and would feel sluggish and be prone to pinch flats.
Philip Williamson took the graph from the article and put it into a google spreadsheet which he maintained over the years. In a blog post he mentioned it would be cool to put it in an App. A friend and I had just started a company doing Apps, so we thought it would be a cool first project we could knock-out and get our feet wet ahead of schedule than what we could do with our original product plans (K-8 ed apps if anyone's curious). We got it posted to the Amazon Marketplace on Monday and I thought some folks on this list might find it interesting and/or useful. Philip's post with some more background on tire inflation: http://www.biketinker.com/2010/bike-resources/optimal-tire-pressure-for-bicycles/ Amazon market URL: http://www.amazon.com/Edison-Gauss-Publishing-Pressure-Calculator/dp/B008J0YAHM Google Play URL: https://play.google.com/store/apps/details?id=com.edisongauss.bertotirepressure Finally, I feel I must mention a few words about the price. With so many free and 99 cent apps, what the heck are we charging $2.50? Well, I expect the market for this is going to be rather small. The usual approach of giving it away and making it up on ad volume won't work. Plus, I hate the ads in so many of the free apps. Not having ad's junk- up the screen is worth a couple bucks to me right there. Also, we put about as much time into testing this as we did into developing it. It's not the typical buggy, crash-prone free App that a lot of guys crank out as fast as they can and throw up on Google the first time they get something that compiles. Philip did some great work on the graphics and IMHO it's an absolute pleasure to look at and use. Is all that worth one less pint of a nice micro-brew the next time I'm enjoying a post-ride pub stop? I think so. :-) Hope others agree. Riv content -- Philip and I use it to inflate the tires on our Quickbeam & Hilsen respectively. :-) Thanks and regards, -Allan -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
