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Re: pic: DeWalt Gearbox with two CIMs
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Re: pic: DeWalt Gearbox with two CIMs
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(1) You have a transmission with a given ratio, and you have two identical motors inputting power (as in your design), then you get a specific max output torque from the transmission. This can then be connected to a drive train (preferably where all wheels are connected, so you power all wheels), determining the max output torque on the wheel axels. (2) Now consider taking the same motors and the same transmission, and having one motor input power into one transmission. If you take two of these single motor-transmission assemblies and connect the output shaft of each transmission to a drive train (where all wheels are connected), you end up with the same max output torque on the wheel axels. So my question is, what is the advantage to the former setup (besides potentially saving weight)? |
Re: pic: DeWalt Gearbox with two CIMs
Quote:
weight distribution - with each motor (cim) weighing about 5 lbs you might want an even weight throughout the chassis as apposed to a centralized one. swap ability - for some reason if a motor burns instead of taking a transmission apart disabling your drive train (with a centralized tranny) you can just quick replace the single module that is broken. Robot layout - sometimes it may be easier to mount 1 single motor and tranny then a full gearbox. The example that comes to mind for me is a planetary set where they are really compact. I am sure there are more....the main thing to remember is that there is no "one and only solution" and it is all about evaluating your specific situation, and making the best decisions you can. Every team has their own reason for doing things, all of which are valid. |
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