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(Stupid) Weapon System Idea


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MoonSet416



Joined: 25 Sep 2016
Posts: 356
Location: Sydney


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(Stupid) Weapon System Idea

So I was talking to my friends about brushless motors the other day and an idea came up: Can we make spinning weapons more reliable by increasing the MOI/weight of the rotor/pulley assembly? My reasoning behind that being a heavier pulley-rotor assembly is harder for the drive belt to stop during a weapon impact and will have a bigger tendency to slip on the belt. This way the deceleration of the weapon motor might not be as abrupt as before and might give ESCs time to react.

One of the downsides though is that the weapon is a bit harder to spin up given the additional weight.

What do you guys think?

Post Sun Nov 19, 2017 4:03 pm 
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MoonSet416



Joined: 25 Sep 2016
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Location: Sydney


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BTW I plan to do that by adding two circular steel plates on the sides of my drive pulley. I'm guessing outrunners have similar effects due to their big rotors, but they are much harder to put into my current designs.

Post Sun Nov 19, 2017 4:14 pm 
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Nick
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Joined: 16 Jun 2004
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It sounds good in theory but just having adjustable belt tension weighs very little and can easily be changed for testing
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Post Mon Nov 20, 2017 11:35 am 
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MoonSet416



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Yeah I agree...

Btw I wonder how do you usually determine if tension is enough/too much?

Post Mon Nov 20, 2017 12:29 pm 
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Nick
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When the belt falls off, there is definitely not enough tension Laughing. I like to have enough tension so that I can't see the belt slipping when the weapon spins up - having a camera with a high frame rate really helps with that.
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Post Mon Nov 20, 2017 2:28 pm 
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Knightrous
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Joined: 15 Jun 2004
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Spend the weight on a bigger weapon motor Smile
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Post Mon Nov 20, 2017 5:37 pm 
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MoonSet416



Joined: 25 Sep 2016
Posts: 356
Location: Sydney


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Thanks for the suggestions guys...

On the topic of a bigger motor... What do you think would be a step up from the 4274 motors I'm using right now? (I'm considering using a single weapon motor in the future to reduce complexity, but I probably won't have the thickness for a large diameter one.)

Post Thu Nov 23, 2017 4:40 pm 
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