12/17/2011, 12:41 PM
TTB, with respect there is no practical difference... and it is about the height. The magnets are being held too far away from the metal of the touchstone. And by practical difference, I mean this:
Take a pre+ or pre2 on the touchstone, you can lift the touchstone off a surface by the phone. Ring or not, you can't do that with the pre3. Try turning the touchstone upside down with a phone on it. Same deal, it can't take the weight of the pre3. I don't have tools to measure that force, but that's a tangible and practical difference.
With or without that ring, in a car it has to be used on a flat surface, no fast turns, and no bumpy roads. That's not super practical.
What I'm aiming for is an easy drop in solution that can hold the phone in during reasonable driving. I'm trying to reasonably cheap too. I can get a sheet of acrylic plastic that I can laser cut pieces for maybe 20 for like $10.
akshunj, so a sleeve to go around the touchstone? That's very similar, but if I were to make a bunch plastic tubes have a lot of variance, especially extruded ones. usually they only guarantee one dimension the inner or outer. So if I had to use a cylinder hone to get a tube to fit over that would stink.
That made me think of a SIMPLE solution for everyone. We have the packaging it came in. Trim the tray it came in and glue that to the ring of the touchstone. Depending on your skill it could be ugly and it still wouldn't hold the phone in from an upward jolt, but anyone should be able to do it.