Greetings fellow roboteers and happy Independence Day!
Forum and robot newbie here. This is only my second robot, counting the ultrasonic sensor attached to a headless raspberry pi that I pushed around on a skateboard. Nevertheless, I'm willing to fail miserably in exchange for the excitement in 'punching above my weight class' and am very appreciative of this site, including the invaluable info and advice I've found on this forum.
My current project I'm working on is building 2' x 3' tracked robot that I can climb 7" x 11 1/2" stairs at a 31 degree incline.
What's brought me here today is that I cannot seem to find a particular drive component I need. My design calls for an appx 1 lb 65 tooth 1/2" pitch (#40) sprocket (chain ring). My internet searches generally lead to sprockets that are too small, or too heavy.
The reason I need one this size
1) The wheel I am using it for is appx 10.5" diameter (for climbing stairs)
2) The best part I can find to use for treads use 1/2" #40 chain for drive:
843-K200 CHAIN specs:http://www.emersononlinecatalog.com/guide/ConveyorComponentsChainsBeltsandBearings/48.asp#
- Since I can find suitable sprockets with a different pitch, would I have better luck finding different treads?
- Any places that will provide 2 custom sprockets without requiring me to mortgage my house (though, building my own CNC machine is rather enticing)?
Thanks - and happy 4th everyone!