is this legal?

[natalie604]

we're using two small ones(i dont know the exact stroke at the moment), one on each transmission.
unfortunately we didn't calculate the distance they would take up when actually fit into our chassis, so the backs(threaded parts) interfere with eachother when mounted.
It was a calculation error on our part, i think we might just have to go with a shorter stroke because its too late to adjust tranny plates and it would just be either a horrible mess or a pain(or both) to re-drill holes on our chassis to off-set the transmissions.

no worries =), thank you for your help!
natalie

[Eugene Fang]

To over come this problem last year, we had an interface that offset the pneumatic cylinders on each side of the transmission. see here

http://www.chiefdelphi.com/media/photos/27738

(the piston axis and the actual shifting axis aren't in line. it was the opposite on the other side so the cylinders would clear)

but we dont want to do that this year

[JesseK]

Originally Posted by natalie604

we're using two small ones(i dont know the exact stroke at the moment), one on each transmission.
unfortunately we didn't calculate the distance they would take up when actually fit into our chassis, so the backs(threaded parts) interfere with eachother when mounted.
It was a calculation error on our part, i think we might just have to go with a shorter stroke because its too late to adjust tranny plates and it would just be either a horrible mess or a pain(or both) to re-drill holes on our chassis to off-set the transmissions.

no worries =), thank you for your help!
natalie

We avoided this problem this year by less than 1/4". We CAD'ed everything to make sure it'd fit beforehand and made our adjustments accordingly. It's pretty easy to make representations of everything in Solidworks/Inventor, as most of the complicated/exact pieces are already made for you on one website or another. For future reference I suppose.

If you shorten the stroke, won't put your gears at risk for not being fully engaged?

[chris31]

You could keep the wheels in the same spot and offset the gearboxes by a slight amount so that the pistons no longer interfere. This is what we are doing and I have seen many teams do this.