Pneumatics Size confusion

[fleadomofbass]

What is the max length you can get from first of a pneumatic piston

[Josh Hambright]

check http://www.bimba.com/techctr/first_free_frm.htm see exactly.

but i believe
for 3/4 Bore the max stroke is 10 inchs
and for 1 1/2" and 2" the max stroke length is 24"

[dlavery]

See page 19 of the Pneumatics Manual.

[Mark Pettit]

Originally Posted by oneangrydwarf

for 3/4 Bore the max stroke is 10 inchs
and for 1 1/2" and 2" the max stroke length is 24"

'1-1/2" bore only goes to 11" stroke.

The order form is on the last page of the Pneumatics Manual.
It's at: http://www2.usfirst.org/2005comp/Man...ticsManual.pdf

[Josh Hambright]

i was going off the bimba website, which lists upto a 24" stroke length for the 1 1/2" bore size. The last page of the manual says to check the website for available stroke lengths for each bore size.

[ewankoff]

are there any limitations on the size of the pistons?

[ewankoff]

is a 1 and 1/16 inch bore and 24inch stroke piston allowd?

[Josh Hambright]

You have a choice of 3/4" bore, 1 1/2" bore and 2" bore. You can order the amount of stroke you require

Page #7 of the pneumatics manual.

See above for the available stroke lengths in each bore.

[Projectchon]

for this year,can we use pistons out side of the kit?

[dez250]

Please see page 19 of the Pneumatics Manual for all the cylinders and other pneumatic components (other then fitting and tubing) you can use on your 2005 FRC competition robot. <R91> also allows the TI Pressure Transducer and single action solenoid from the 2004 FRC KOP as legal for use this year. But other then those cylinders ["pistons"] on the pneumatics order form for this year, no you can not use cylinders from out side of the 2005 FRC Kit Of Parts.

[Jeffrafa]

Just a note, the order form on page 19 of the pneumatics manual does not list 24" for a stroke length for the 1-1/2" bore, but it also says "Please check the Bimba web site for available strokes in each bore size". Page 7 of the pneumatics manual also says "You can order the amount of stroke you require.", implying you can get whatever stroke you need (of course assuming its avalible). As said by oneangrydwarf the bimba site does list 24" stroke cylinders in 1-1/2" bore, which means you can get it.

Also, rule <R91> says you may use last year's kit pneumatic cylinders and solenoid valves - last year our team recieved two 24" stroke 1-1/2" bore cylinders as part of our 3 free cylinders, meaning we can use these because the rule says any cylinder avalible in the kit last year is also legal this year.

[Phil Paspalas]

I've searched this site and read the rules and pneumatics manual over and over again. Can anyone answer this question once and for all?

Can a team use a piston other than the ones offered for free by Bimba? For instance: Bimba make a 1 1/16" dia. piston with a 24" stroke. Is this allowable? I understand that Bimba will only give away the ones listed on their site (3/4", 1 1/2", 2") but if we are purchasing pistons, what range of diameter are we limited to?

Thanks.

[Steve W]

This is my final answer - 3/4", 1 1/2" and 2".

[dez250]

This question has been answered many times and i will answer it again.

You have the choice from three (3) different bore sizes [piston diameters] to choose from and use this year on your 2005 FRC competition Robot. These three bore sizes are 3/4", 1-1/2" and 2".

Originally Posted by 2005 FRC Pneumatics Manual, Pg. 7

CUSTOM BIMBA CYLINDERS You will again be able to order custom cylinders for your robot again this year. You have a choice of 3/4” bore (diameter), 1-1/2” bore and 2” bore. You can order the amount of stroke you require.

You can find the strokes available for these three bores on page 19 of the 2005 FRC Pneumatics Manual

[Phil Paspalas]

In the spirit of gracious professionalism, Thanks!

Originally Posted by Steve W

This is my final answer - 3/4", 1 1/2" and 2".