Methods of shifting gears

[lukedude43]

I was wondering of anyone has made a two speed transmission and if so how you managed your shifting. From what i understand there are multiple ways of shifting, but the only one I understand is crash shifting due to it's simplicity. I would love explanations on different methods and pictures if possible would be super helpful.

Thanks

[CalTran]

Do you want specifically custom shifters or would COTS transmissions work? If you want COTS, you could look into both the AM Super shifter and the VEXPro BallShifter. I think there's also a video or two floating around YouTube that explains ball shifting. Never bothered looking for dog shifting. The CAD for both products are on their respective pages, so if you'd like you can download them and take one apart without actually buying the gearbox.

[lukedude43]

I was kinda hoping for custom builds just to see how people did it, but thanks to the link to the ball shifter I had only seen the andymarks shifter and the supershifter whih I think are both dog shifting

[CalTran]

You might have to do some digging, but you can find some shifting gearboxes on FRC-designs.com

[MattC9]

Somewhere out there is 33's 4 speed transmission.. I know it's in the white papers some where.

[joelg236]

Originally Posted by MattC9

Somewhere out there is 33's 4 speed transmission.. I know it's in the white papers some where.

http://www.chiefdelphi.com/media/papers/1580

[joelg236]

911 in 2007
http://www.chiefdelphi.com/forums/sh...ad.php?t=59800

[mman1506]

Here is one that one of our team member built http://www.chiefdelphi.com/media/photos/24580

Its a dog shifting design, you can see the the dog in the pictures.

I could get more pictures if you would like. Basically both the gears spin freely from the shaft and the dog is attached to the drive shaft. The dog will latch onto the first or second gear transmitting that power to the driveshaft

[lukedude43]

Looking at the dog shifter if I understand correctly all the gears are free spinning on the shafts and the dog is attached to the driven shaft. the dog meshes with one of the two gears to spin the driven shaft. Is that right?

[mman1506]

Yup, that is correct.

[lukedude43]

Great thanks i'm like 90% sure I understand now

I suggest looking at Team 254's shifters on their website (www.team254.com)

Here's their 2012 transmission: http://media.team254.com/2012/08/gearbox.jpg



Also, a bit unrelated, but did you use to have a MC server?