Mag roller sear?

[Blennidae]

I have read a few messages about improving the trigger pull on mags. Has anyone ever considered making a sear with a roller bearing on the part that actually catches the bolt?

Seems to me that if it were possible, it would make the actual force required to pull the trigger a bit less.

[toymyster]

Not really, there needs to be a definite catch, so the roller would not make any diferrence (as the roller will have to roll past the lip of the bolt still)!!

[Kevmaster]

its not like a cocker sear...besides the Roller part on a cocker sear is on the trigger end, not the hammer end

[IcantBelieveit]

but still anywhere that you could reduce friction and make the action of pulling the trigger smoother is still good. like maybe some sort of roller on the hinge, and on the sear pin. like i said, anyhwhere that you could reduce friction is a plus. Just my .02 cents worth

[Blennidae]

I think IcantBelieveit and I are thinking along the same lines.

The current sear catches the lip of the bolt, so to release it, there is just 2 flat pieces for metal dragging across one another.

I just thought if there were a rolling surface it would reduce the force required to release the bolt.

[Vendetta]

Why not use a Teflon coating on the sear to reduce the friction?

[xen_100]

the teflon coating would be worn off before one days play was done. if you get the inteli blade, the pull is not that stiff.

[hitech]

Re: Mag roller sear?

Originally posted by Blennidae
I have read a few messages about improving the trigger pull on mags. Has anyone ever considered making a sear with a roller bearing on the part that actually catches the bolt?

I have. I believe that it could be done.
The problems are 1. I don't know how much it would reduce the pull by; 2. I don't have access to a machine shop.
Other than that, I believe it would work.

[athomas]

The roller sear would reduce the friction on the sear and thus the pull force. The problem is that the mag on/off - sear assembly relies on the bolt being held by the sear until a precise time where the edge of the sear falls below the edge of the bolt. On a roller sear the point of contact is not as precise. As the roller sear got near the edge of the bolt lip, the pressure on the bolt could force it to slip past the sear in an unpredictable manner.

[xen_100]

I dont think that is the case at all........the roller on the end of the sear would have a phsysical size. the bolt would have to be made to accept such a sear, but it would let go at the same point each time. It would have to, or it couldn't get past the bolt. it wont magically let the bolt go at varing points in the trigger pull. the bearing would still have to get by the bolt somehow.

[athomas]

When you are using a rounded roller surface and a force acting on it which is not perpendicular to the surface, then some of the force is deflected at the point of contact. Since the bolt can't move but the sear can, the force is transfered downward on the sear. A side effect of using this type of sear on a mag would be that there could be a grey area of operation where the trigger is not fully pulled but the bolt is starting to go forward as it rides on the roller.

Even in a specially designed bolt there will have to be a flat surface going past a round surface and deflection will occur.

[pballguy17]

somethign i thoguht u but never did.... adding a spring under the sear, under the on.off assembly. this would aid to the force going with ur trigger. but have less return push. also it might cause problems with the on/off. but alittle glue and a ball point pen spring can't hurt anything. if it doesn't work pull it out....

[magnj]

how about a roller on the sear tip, where it comes in contact with the trigger, with a special made rigger it could be realy nice. On a stock trigger it would probably make a realy long triggerpull

[AutomagN2]

And Newtons Third Law....lol

[joeyjoe367]

I think you guys are forgetting something.

With LvL-10 Guns (I'm ommitting lvl 7 guns, because lvl 10 is going to be the wave of the future) the main force that you're dealing with in the trigger pull is the on/off pressure.

when you pull the trigger, you're fighting the pressure in the on/off, not the sear.

Yeah, you could make the sear smoother, but that wouldn't do nearly enough to compensate for the pressure in the On/off.

hehe, the SEAR is FINE! go fix the on/off!!