 | | Re: What is RPM of Gear Motor??? —Peter Abrahamson
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| | | Using a Futaba 9ZAP radio with a built in optical tachometer and the two bladed LEGO prop I got 380 rpm for the gearhead motor and 4320 rpm for the older nongeared motor. Of course this was done with a battery box and brand new batteries so I am (...) (25 years ago, 7-Jul-99, to lugnet.robotics)
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| | | | | Re: What is RPM of Gear Motor??? —Alex Wetmore
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| | | | (...) You could get close using the differential as an adder. The ratio of speeds above is about 11:1 (its 11.3:1, but lets keep things as integers). That is a prime number, and we know there aren't any lego gear options that give you an 11:1, so (...) (25 years ago, 7-Jul-99, to lugnet.robotics)
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| | | | | | Re: What is RPM of Gear Motor??? —Luis Villa
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| | | | (...) Assuming those numbers are correct (I've been too slack to actually look up the tooth counts), I'll give further clarification on my earlier post. I'm using a combination of three 40:8 combos, giving me an effective ratio of 125:1. The gearing (...) (25 years ago, 7-Jul-99, to lugnet.robotics)
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