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Author Topic: Spinning weapon design  (Read 765 times)


  • Roboteer
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Spinning weapon design
« on: February 03, 2017, 08:07:41 am »
I'm in the process of trying to design a spinning weapon for a 3lb bot.  Assuming that the bot will have a top speed of about 5-6 mph and a weapon speed of about 10,000 rpm, how much "bite" should I be shooting for in a single-tooth design?  I have come up with an easy to machine design where the tooth is about 0.25" longer than counterweight end of the weapon, but I need to figure out if that is enough or if I should adjust the design for more bite.


  • Roboteer
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Re: Spinning weapon design
« Reply #1 on: February 03, 2017, 01:00:00 pm »
In the riobotz book they recommend 1/4" bite, but its also more focused on 12+lb bots. a single tooth at 5mph they suggest max weapon speed for 10560rpm. In your case, I'd try to get a bit more just to be safe, 3/8" should be plenty
Andrew Burghgraef
Canadian Carnage Robotics

Great Hobbies- Canada's leading retailer of radio controlled models and related hobby supplies


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Re: Spinning weapon design
« Reply #2 on: April 11, 2017, 11:33:55 pm »
I've got 3/8" bite set up for a 4" diameter 2 tooth 8k RPM weapon for ant, but also realize you may be hitting at half throttle so double the bite to make sure. 3/8" sounds about right.