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Taggerun 14-01-2017 20:33

Nominal Stroke???
 
What exactly is nominal stroke on a linear actuator?? And can I find a 1 inch nominal linear actuator online? Or do we have to build one ourselves??
Thanks,
Taggerun

cgmv123 14-01-2017 20:39

Re: Nominal Stroke???
 
Quote:

Originally Posted by Taggerun (Post 1631309)
What exactly is nominal stroke on a linear actuator??

"Nominal" means "we designed it to actuate x inches every time, but your conditions/use may vary, so we can't guarantee it will actuate x.0000000 inches every time."

Taggerun 14-01-2017 20:43

Re: Nominal Stroke???
 
Quote:

Originally Posted by cgmv123 (Post 1631312)
"Nominal" means "we designed it to actuate x inches every time, but your conditions/use may vary, so we can't guarantee it will actuate x.0000000 inches every time."

What???

Hitchhiker 42 14-01-2017 21:25

Re: Nominal Stroke???
 
Quote:

Originally Posted by Taggerun (Post 1631315)
What???

Basically, they say it's a, for example 1" stroke, but they can't guarantee it'll be exactly that for every use and condition.

engunneer 14-01-2017 22:49

Re: Nominal Stroke???
 
If the manufacturer calls it a 1" stroke, and you buy one and measure the movement to be 1.05", then it's still legal, because the nominal spec is 1" (manufacturer spec).

Fusion_Clint 14-01-2017 23:59

Re: Nominal Stroke???
 
Remember it still has to be powered by a legal FRC motor. Amazon is full of options, but AndyMark is the only one I know of that sells COTS legal linear actuators for FRC.

Ari423 15-01-2017 03:41

Re: Nominal Stroke???
 
Quote:

Originally Posted by Fusion_Clint (Post 1631385)
Remember it still has to be powered by a legal FRC motor. Amazon is full of options, but AndyMark is the only one I know of that sells COTS legal linear actuators for FRC.

If it's powered by a motor, then it is just a gearbox and it can have any stroke. (e.g. DART linear actuators). This rule is referring to non-DC brushless linear actuators like solenoids and the like. They can only have a 1" nom. stroke max.


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