07-08-2011 20:03

Billfred

Re: pic: FRC973 offseason teaser

Well, the above looks (operative word: looks) like a standard cylinder used on an AM Shifter (and many other designs for its widespread availability).

I can only imagine this will have something to do with a minibot launcher or some other one-shot device--I can't see the reduced stroke being used to shift a drive gearbox unless they redid the entire thing to accommodate that (and I think that if anyone can play the if-it-ain't-broke card...)

07-08-2011 20:10

Chris is me

Re: pic: FRC973 offseason teaser

I can see it being used to reduce the amount of air a shifting transmission uses. The project could easily be a gearbox that makes it work.

07-08-2011 20:15

Hawiian Cadder

Re: pic: FRC973 offseason teaser

Quote:

Originally Posted by Chris is me I can see it being used to reduce the amount of air a shifting transmission uses. The project could easily be a gearbox that makes it work.

07-08-2011 20:29

Chris is me

Re: pic: FRC973 offseason teaser

Quote:

Originally Posted by Hawiian Cadder the smaller bore would mean less force, and for the weight and complexity of solenoids and all the tubing, they might as well use a servo, or a pair of servos.

07-08-2011 20:30

Ankit S.

Re: pic: FRC973 offseason teaser

Quote:

Originally Posted by AdamHeard Something using the smaller of these two cylinders will be competing at 2-3 offseason events this fall!

07-08-2011 20:31

JB987

Re: pic: FRC973 offseason teaser

Many teams use short stroke cylinders for shifting their transmissions. 987 uses a half inch stroke for our ball shifter...

07-08-2011 21:11

EagleEngineer

Re: pic: FRC973 offseason teaser

I think the small cylinder is going to be used for shifting the custom 2 speed gearbox on your six wheel drive train.

07-08-2011 21:17

Andrew Schreiber

Re: pic: FRC973 offseason teaser

Quote:

Originally Posted by EagleEngineer I think the small cylinder is going to be used for shifting the custom 2 speed gearbox on your six wheel drive train.

07-08-2011 21:18

O'Sancheski

Re: pic: FRC973 offseason teaser

Quote:

Originally Posted by Hawiian Cadder my bet is on mini-bot deployment.

07-08-2011 21:30

rcmolloy

Re: pic: FRC973 offseason teaser

Let's just say California will be rocked in the off-season with what 973 has in store for it.

07-08-2011 23:04

AdamHeard

Re: pic: FRC973 offseason teaser

Both of these cylinders are .5" stroke, and both are readily available. 3/4" Bore is somewhat "standard" in FRC from the years it was one of the few allowed sizes, but industry doesn't respect these limitations. Both can be bought directly from bimba or mcmaster for the same price more or less, and ship fast.

The lower one is a 5/16" Bore, and has substantially less shifting force.

We've also been running 9/16" bore shifters the last two seasons with great success.

Won't say what they're for just yet, but some good comments in the thread so far!

08-08-2011 12:38

Taylor

Re: pic: FRC973 offseason teaser

Quote:

Originally Posted by Andrew Schreiber I think whatever this project is that it has a few less wheels.

Quote:

Originally Posted by rcmolloy Let's just say California will be rocked in the off-season with what 973 has in store for it.

08-08-2011 13:00

Jeffy

Re: pic: FRC973 offseason teaser

These may also offer an appropriate amount of clamping force for a "gas shock" style roller claw. (ie. 1902 in '08)

08-08-2011 13:19

AdamHeard

Re: pic: FRC973 offseason teaser

Keep in mind that a 5/16" bore is only pushing with 4.5 lbs.

09-08-2011 23:05

Hawiian Cadder

Re: pic: FRC973 offseason teaser

perhaps some sort of locking device for your arm. something with one or two of these that locks the arm in place when it isn't being driven, it could reduce the amount of bounce and slop in the arm and make it smoother, and thus easier to place tubes.

10-08-2011 10:25

Re: pic: FRC973 offseason teaser

It could be used in a similar way of 254's to let go of the tubes without the use of a roller claw.

Whatever it is, I can't wait to see it at CALgames!

10-08-2011 11:06

AdamHeard

Re: pic: FRC973 offseason teaser

The guesses about drive shifter are correct. However, there is something odd going on, as this is not strong enough to shift our usual gearboxes (9/16" doesn't sound much bigger, but it has a lot more force).

Quote:

Originally Posted by SuperNerd256 It could be used in a similar way of 254's to let go of the tubes without the use of a roller claw. Whatever it is, I can't wait to see it at CALgames!

10-08-2011 11:16

PAR_WIG1350

Re: pic: FRC973 offseason teaser

Quote:

Originally Posted by AdamHeard The guesses about drive shifter are correct. However, there is something odd going on, as this is not strong enough to shift our usual gearboxes (9/16" doesn't sound much bigger, but it has a lot more force).

10-08-2011 13:41

R.C.

Re: pic: FRC973 offseason teaser

Quote:

Originally Posted by PAR_WIG1350 Ball-lock shifter?

10-08-2011 15:35

Frenchie461

Re: pic: FRC973 offseason teaser

Shifting sprockets? like on a bike.

11-08-2011 11:03

Lil' Lavery

Re: pic: FRC973 offseason teaser

Go go gadget power take-off device.

11-08-2011 12:11

camtunkpa

Re: pic: FRC973 offseason teaser

4.5 pounds of force should be plenty to shift a ball lock shifter

12-08-2011 19:35

Doug G

Re: pic: FRC973 offseason teaser

We are in the middle of our ball shifter transmission design so that's what I was thinking they may be doing as well. I'm really curious how folks are reducing friction within the ball shifters - Ooopps, off topic.... (off to contact 987..)

12-08-2011 20:00

AdamHeard

Re: pic: FRC973 offseason teaser

Thanks for all the cool replies guys, we'll try to post another teaser tomorrow, and one more each week until we finish.

Quote:

Originally Posted by Lil' Lavery Go go gadget power take-off device.

12-08-2011 20:07

Hawiian Cadder

Re: pic: FRC973 offseason teaser

Quote:

Originally Posted by AdamHeard Thanks for all the cool replies guys, we'll try to post another teaser tomorrow, and one more each week until we finish. Already said it was for shifting A plain 'ol dog shifter at that as well.

12-08-2011 20:45

Andrew Schreiber

Re: pic: FRC973 offseason teaser

Quote:

Originally Posted by Hawiian Cadder shifting mini-bot.

12-08-2011 21:31

Hawiian Cadder

Re: pic: FRC973 offseason teaser

Quote:

Originally Posted by Andrew Schreiber Let's do a little exercise in rule reading. Name all the rules this would violate.

13-08-2011 14:38

Lil' Lavery

Re: pic: FRC973 offseason teaser

Quote:

Originally Posted by AdamHeard Already said it was for shifting A plain 'ol dog shifter at that as well.

07-09-2011 22:52

Akash Rastogi

Re: pic: FRC973 offseason teaser

Reported