Andy Mark Super Shifter

[tony.dalia.195]

Would anyone be able to tell me around how long it takes the Andy Mark Super Shifter to shift. It is not on the Andy Mark site that I know of and one advisor says .15 seconds and another says 1.5.

Any help would be appreciated, thank you.

[GMAdan]

well i believe that it varies because i have played with our super shifters and the gear has to spin usually for the dog gear to fall in place. So it depends on how fast the gears are spinning for the dog to fall in place and sometimes you could be shifting at the right time and they are lined up and they fall right in. So my answer is it varies but i am sure you could get an average time.

[Arefin Bari]

It depends on what you are using to shift with...

If you are using a servo shifter, it's going to take you a second or two to shift because servo is slow and you are only using about 5 lbs of force to shift with.

If you are using a cylinder to shift with, it's going to shift in spits of a second because a cylinder shoots out or in fast and you are also using 35-40 lbs of force to shift with.

Good luck.

[IndySam]

We don't have any experience with the servo shifting models but with the pneumatic shifting the shift is almost instant.

If you are moving and you trigger the shift you won't notice any lag at all unless you are moving very slow. On the fly at speed it's bang and go!

[ADZDEBLICK]

to clarify, our team is wondering how long it takes to shift using the servo

[Arefin Bari]

Originally Posted by ADZDEBLICK

to clarify, our team is wondering how long it takes to shift using the servo

Andrew, read my post that I made earlier in this thread.

[Travis Hoffman]

We used Gen 2 servo shifters last year. Once we "broke in" the transmissions, they shifted very smoothly. Very. Still do. Not as fast as pneumatic, but I'd guess below a second.

We have no experience with the SuperShifter servo shifting, but I'd expect similar performance. I feel the simplicity as well as the weight and space savings of the servo shifting setup (goodbye solenoid valve, cylinders, tubing, Spike Relay) balance the drop in shifting performance relative to pneumatics.

Just keep the backup battery fresh. Buy enough to keep them charged and swap out every 1-2 matches, just to be safe. We rotated four backups last year, but you could probably get away with only two. Dying backup battery = weak servo holding force = shifters coming out of gear = bad.

You could also choose to employ an onboard backup battery charging circuit to keep the battery fresh.

[lukevanoort]

Our brand new servo shifters (not broken in at all--less than 20mn run time) shift in a little less than a second. However, it is really important to oil the dog well and set good points for the servo to shift to. The shifting slows down a bit when the backup battery wears down.

[clydefrog88]

we switched from pneumatic shifting to servo shifting this year. The servo shift seems to take roughly the same amount of time as the pneumatic. I was worried that the servo shift wouldn't be as reliable, but from what I've seen so far (1.5 hrs or so on the drivetrain), they seem to work just fine.

Edit: oh, by the way, we use gen2's, not supershifters, but i would venture to guess the shifting is quite similar

[Kingofl337]

Team 40 used Andy's Servo shifters last year and a vex 7.2 battery for a backup battery. They worked great, though I would recommend servo savers as we broke about 8 servo's using them. The gears in the servo kept breaking so we just bought replacement gear sets. We used a shift on the fly as a turbo button so the robot ran in low unless "turbo" was pressed and the shift was instantaneous. We didn't cut power to shift which may also have had a negative effect on the servos.

[Capt. Quirk]

Are teams using the shifter transmissions backing off on the power and then shifting or are you shifting under power?