Benchmade predsidio 2 auto vs manual leggo?

[DMS1]

1) if I swapped a blade with a thumb stud would it still work with the auto function?

2) if I had a thumb stud, would it be dual action (manual/auto) or assisted/automatic?

Would be nice to have it be discrete, but auto when I wanted.

Thanks.

 

[Cypress]

I haven't disassembled the new Presidio series yet, but if it is engineered like other Benchmade autos:

1) The coil spring in the auto function is recessed into the blade's pivot area and joins the handle and blade with two tensioned posts. If you swapped out the blade for a non-auto version, the auto function would cease to exist, as it would no longer have a spring, nor the required post hole for the spring to tension itself on.

2) The Axis auto operates on the premise that the blade is under tension when closed, and the only thing preventing the blade from opening is the Axis bar. The knife is "locked shut" and under tension until the Axis lock is pulled open (the same motion you use to unlock an axis knife). If you somehow drilled out a thumbstud blade and attached the coil spring to it, the thumbstud would still be going against a locked Axis bar.

 

[Ulf Krogstad]

Short answer is no. You could probably put a manual blade on the auto frame but it would not fire like an auto because their are holes drilled into the auto blades that the springs fit into that the manuals don't have (at least on 5000 and 2750), you may be able to put a manual blade on the auto frame, take the spring and whatever else out and use it as a manual tho. The axis autos are a complete bitch to reassemble and don't advise taking one apart. The push button autos are much easier to put back together.

 

[Benchmade]

No to both questions.

The blade tangs are totally different. Which would not allow the auto function to work with manual blade in the auto.

The liners are also different so you could not physically put a manual blade into an auto knife. The auto blade/liners have a larger pivot cut out for a bushing.

 

[DMS1]

Thanks for the responses. I really like the idea of the Serum which is both auto or manual open, but in a larger footprint than I prefer. I was just wondering how close the Presidio 2 is to that.