Better sear tripper?

[PBCapo]

Has anyone ever tried using a rotary solenoid in an eframe for a spyder or mag? It seems like that would be much more efficient than a regular one. Linear motion is way less efficient. Rather than waiting for the solenoid to go back and forth, couldn't you just have a rotary solenoid with 1 or 2 raised parts on it, and put a bearing on the end of a sear, so the solenoid could push the sear as it spun? hmm

[FinchMan]

so, like a cam shaft in an engine? Thats an interesting idea.

You'd want to make it lightweight, so it didn't get momentum during a long string of shots and keep shooting after it's supposed to stop. It might be hard to fit a rotory solinoid into a frame with the correct orientation to the sear...

[PBCapo]

so, like a cam shaft in an engine? Thats an interesting idea.

You'd want to make it lightweight, so it didn't get momentum during a long string of shots and keep shooting after it's supposed to stop. It might be hard to fit a rotory solinoid into a frame with the correct orientation to the sear...

exactly like a cam, except using a sear instead of rocker arms or valves

I agree with both of those possible problems

Maybe we can have something put friction on it if it starts getting fast enough to get that momentum

Fitting might be a tough, but I guess just use a wide frame and roomy grips

[BigEvil]

Tough to make the room for something like that. I made a rapid fire crank once out of an RC motor. The shaft sat on the trigger, and had flat spots on it instead of cams. It worked well, if a bit bulky. I had it mounted to an old Pro-lite. I always wanted to try the same principle on the sear, but I doubt an existing frame could be made to work. You would need something to power a cam from the side wouldnt you? Then again, I never really looked into it.

[PBCapo]

the shaft of the solenoid would be the cam, so basically the battery is just powering the cam.

http://www.solenoidcity.com/solenoid/rotary/r-09-150-cwnp1.htm

this one is the smallest i could find. .87 of an inch isn't so bad to fit. However, the shaft would not be in line with the sear. Maybe something can be hinged onto the sear and basically move the effective pushing point of the sear over a small distance to where it would hit the cam

[FinchMan]

maybe this could be done with a gear or two. That way you could mount the rotory noid in the same orientation as a normal pancake noid. The gears would change the rotation axis to the correct one.

...does anybody have any LEGOs?

[Surestick]

It's harder to control the stop/start points for rotary motion than it is for linear motion. With linear motion you can just use stops, with rotary motion you either need sensors to tell you where you are in the rotation or you can use stops & make the rotation reciprocal (one firing cycle it turn clockwise, the next counterclockwise).
Using a solenoid that operates linearly removes complexity & most likely improves cycling speed as you are moving the mass (and probably a lighter mass) a shorter distance.

[Skittle]

this is a freaking AWESOME idea. however, it seems like it could have better applications in a grip frame... mabye in the elusive idea of a paintball gattling gun? You put a heavier circular solenoid and let the weight carry it for those extra shots. Mabye you can time the solenoid with the barrels. It would be awesome.

[BigEvil]

Hmmm nice solenoid. Good find. Keep us posted on your progress.

[warbeak2099]

Isn't this how Mike Cassidy made the supposedly first electro marker? Just instead of using a servo on the sear, he used on to rotate the bolt.