hey got a tech question about AM Trannys

[Travis Covington]

Originally Posted by Cory

In 2006 we shifted at 20 PSI just fine.

This was with the SY3000 series SMC valves. The festo may perform differently though?

[Pat Roche]

With the AM's this year just above 10 psi still shifted gear perfectly fine. It started to get hairy anywhere under that.

[Uberbots]

Originally Posted by Travis Covington

This was with the SY3000 series SMC valves. The festo may perform differently though?

Really?

whenever we boot up the robot from a no-air state, it takes a noticeable amount of pressure before any of the solenoids will trip. i believe this is at about 20-30psi, so ??

[The Lucas]

Originally Posted by Cory

In 2006 we shifted at 20 PSI just fine.

Originally Posted by Travis Covington

This was with the SY3000 series SMC valves. The festo may perform differently though?

Originally Posted by Uberbots

Really?

whenever we boot up the robot from a no-air state, it takes a noticeable amount of pressure before any of the solenoids will trip. i believe this is at about 20-30psi, so ??

This also depends on whether it is a single or double solenoid because they usually have different pilot pressures. The SMC SY3000 (we use them too) has a min pilot pressure of 0.1MPa (~15psi) for the double and 0.15MPa (~21psi) for the single. We used a double for the shifter (regulated to ~25-30 psi) and singles everywhere else (to save SPIKEs).

Back to the roll pin topic, I believe we broke the initial pins in both of this year's AM shifters before shipping the bot. We never broke pins in any of the AM shifters we used in the prior 2 years. We replaced with higher strength pins and didn't have any more problems. I know 1503 broke their pin at FLR and used our stronger pins to replace (dont know how that worked out past FLR). Maybe a lower quality batch of pins this year or just too much shifting into Overdrive.

[Stephmthompson]

After FLR and using the stronger roll pin, 1503 didn't have any problems. A mistake we had made in our pneumatics was also corrected. We isolated the air control to the shifter (it had been tied into another sytem) so that we could have independent control of the pressure. And thanks to MOE's recommendation we also purchased the installation tool needed to install the roll pin in place without having to take the gearbox apart. We haven't had the chance to practice this one yet, but it will be one of our off-season drills.

[Joe Finkel]

We love the supershifters! (just ordered two more). 25-30 psi, 3/4'' bore
by 1/2'' stroke(no spacers) cyl. and you will be fine for regionals and a
few off-season.