We're happy to announce another variant of gearmotor. Like the GM2/GM3 but with a gear ratio of 143:1, they run approximately 175% the output speed! - these are ideal for applications like minisumos, linefollowers and other wheeled devices. Check the "New Items" listing on the left side for details, or view them directly here: GM8 […]
New GMPW Wheels!
Dave Hrynkiw
June 21, 2007
No more rubber band tires for us! We've invested in getting our very own wheels made for us, with molded-on thermoplastic rubber wheels!
These wheels are slightly larger in diameter than the old style, measuring 69.2mm (2.72") diameter and 7.65mm (0.30") wide. Ah, but how good are they? They're definitely better than the old style! We know from head-to-head tests that these have better traction than the rubber-band tires (definitive numbers are coming...). We've also spun them up on our lathe to see how true the mold process is, and they're quite true - no visible wobbling!
A new enhancement is a built-in opto-reflector 32-step pattern! Built to be bolt-on compatible with the Wheel-Watcher series of wheel-encoders, all you have to do is paint the groove white (for dark plastic wheels), and scrape away the raised surfaces to generate a sharp, accurate 32-stripe pattern!
Did we mention that there was no increase in price for all these enhancements too?
MORE POSTS
New Items!
Besides introducing a whole new batch of Push-Pogopins (and their measurements) into the 'misc' category, we've just introduced our 'D2' Germanium Diode. This diode is pretty good - better than the 1N270 and 1N34 types, with a voltage dropout of only 0.36V at 50mA! We're not exactly sure what type it is, but since we […]
Pendulum project
It's really nice to receive pics of projects people have built out of our book "Junkbots". Here's one of the latest: the Pendulum by Christopher Pepe. Nice magnetic suspension mechanism! Read More...
Mark Tilden's 600 foot workbench
Well, it's more like a workbench 600 feet in the air. In his apartment. In Hong Kong. Nice view... Dig around the large image to see what cool stuff you can pick out. Gareth @ Make Magazine (where it was first posted last week) already found a "teacup Stirling Engine" at 10 o'clock (near the […]
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Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Please visit www.P65Warnings.ca.gov for more information. This item was manufactured prior to August 31, 2018.