- #1
Aspirant
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Hello all, I'm going to get right to the point!
My current project is a motor-retracted spring-loaded toy lightsaber. I started with one of those spring loaded lightsabers that spring out at the touch of a button... but it had the annoying immersion problem that in order to re-load it, you had to physically touch the blade to push it back in. So I gutted the lightsaber to make room for a 6 volt motor, attached it to the hilt, spooled a string around it, passed the string through the spring latch, and connected it to the loading mechanism attached to the top of the telescopic blade. Since I hadn't attached a battery to it yet, not knowing if it would even work, I tested it with a power supply and accidentally used 10 volts instead of 6 (oops!). Regardless of that, it worked beautifully and doesn't even look that ugly!
However, it doesn't work quite as much as I had hoped. You see, it pulls the blade back... but it can't pull it all the way back against the spring's resistance, so is doesn't reload and there still a portion of the blade sticking out of the handle.
So I need a new (bigger) motor that can bring the blade in even in spite of the spring resistance. I decided I would measure the exact force it takes to completely close the spring, and I discovered it takes approximately 12 Newtons of force. Unfortunately I haven't found anything on the web that can translate that into what sort of motor voltage or torque I would need to reach that amount of force.
What sort of advice to you guys have for me?
-Aspirant
My current project is a motor-retracted spring-loaded toy lightsaber. I started with one of those spring loaded lightsabers that spring out at the touch of a button... but it had the annoying immersion problem that in order to re-load it, you had to physically touch the blade to push it back in. So I gutted the lightsaber to make room for a 6 volt motor, attached it to the hilt, spooled a string around it, passed the string through the spring latch, and connected it to the loading mechanism attached to the top of the telescopic blade. Since I hadn't attached a battery to it yet, not knowing if it would even work, I tested it with a power supply and accidentally used 10 volts instead of 6 (oops!). Regardless of that, it worked beautifully and doesn't even look that ugly!
However, it doesn't work quite as much as I had hoped. You see, it pulls the blade back... but it can't pull it all the way back against the spring's resistance, so is doesn't reload and there still a portion of the blade sticking out of the handle.
So I need a new (bigger) motor that can bring the blade in even in spite of the spring resistance. I decided I would measure the exact force it takes to completely close the spring, and I discovered it takes approximately 12 Newtons of force. Unfortunately I haven't found anything on the web that can translate that into what sort of motor voltage or torque I would need to reach that amount of force.
What sort of advice to you guys have for me?
-Aspirant