pic: 2004 TechnoKat gearbox

[CD47-Bot]

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[Rich Wong]

ME WANT TWO ASAP!

You take PayPal? or FIRST Mastercard?
How about selling just the gear box?

[Stephen Kowski]

cool idea for those who don't have the resources/technical knowledge to build something like this....i think though it may take away from the learning process, but hey what do i know....cool stuff andy

[Greg Needel]

are you hiring designers?...

[Ben Lauer]

Originally Posted by Stephen Kowski

cool idea for those who don't have the resources/technical knowledge to build something like this....i think though it may take away from the learning process, but hey what do i know....cool stuff andy

Just because these gearboxes would be potentially widely available doesn't mean that they will be the best solution for FIRST teams trying to make a gearbox. Sure it may take away from the learning experience, but it may intrigue a student to try and design their own gearbox. This would facilitate the learning experience of this student.

Anyway...Nice Gearboxes Andy!
- Hope to see many FIRST teams using these and their own deviations of this.

[Max Lobovsky]

Because its good to know your (almost non-existant) competitiors, http://www.robotmarketplace.com/. From what I have seen on CD, magically, no one knows of the existance of the prebuilt gearboxes available on that site designed specifically for our purposes.

On another note, I don't really want to start a big professional involvement argument thread, but this really emphasizes the situation on some teams. It seems to me that this creation must have been entirely Andy Baker and Mark Koors for them to undergo such a venture. At least they are being fair and making their (some would say unfairly used, but) awesome skills available to all FIRST teams and somewhat negating the argument about unfair professional involvement...

[sanddrag]

Originally Posted by Max Lobovsky

Because its good to know your (almost non-existant) competitiors, http://www.robotmarketplace.com/. From what I have seen on CD, magically, no one knows of the existance of the prebuilt gearboxes available on that site designed specifically for our purposes.

Are you saying they do or do not have gearboxes specifically for our purposes?

[Max Lobovsky]

They do, and yet somehow, no one in the CD community knows about it, unless they are keeping it to themselves.

[Joe Ross]

Originally Posted by Max Lobovsky

Because its good to know your (almost non-existant) competitiors, http://www.robotmarketplace.com/. From what I have seen on CD, magically, no one knows of the existance of the prebuilt gearboxes available on that site designed specifically for our purposes.

I would guess that the teams that have the machining capability to securely mount the kit motors to those gearboxes also have the machining capability to make a gear box much more suited to their needs.

I didn't see any gearboxes there that are two motors, and only the dewalt gearboxes shifted.

Edit: You'd be better off putting this in a seperate thread if you want to make sure people hear about robotmarketplace.com.

[Cory]

Originally Posted by Max Lobovsky

Because its good to know your (almost non-existant) competitiors, http://www.robotmarketplace.com/. From what I have seen on CD, magically, no one knows of the existance of the prebuilt gearboxes available on that site designed specifically for our purposes.

On another note, I don't really want to start a big professional involvement argument thread, but this really emphasizes the situation on some teams. It seems to me that this creation must have been entirely Andy Baker and Mark Koors for them to undergo such a venture. At least they are being fair and making their (some would say unfairly used, but) awesome skills available to all FIRST teams and somewhat negating the argument about unfair professional involvement...

I've seen that before, and I wasn't really interested.

You can buy it, but you end up paying just as much as if you made it yourself, and it isn't exactly user customizable, or usable straight off the shelf.

Cory

[Max Lobovsky]

alright, maybe I overstated how much application it has to FIRST, but it still is surprising considering there are seemingly no other organizations that sell any sort of gear reduction like these. Up until Andy Baker started, of course

[suneel112]

A chip and a Fisher Price?!? Talk about Power! I hope that it was only for tank drive.

During the 2002 season, 461 made a set of crab-treads (a great drive train, before considering weight), where two were powered by one chip each and the other two were powered by a FP and a Drill each. The FiP didn't work well, since it had plastic gears that couldn't handle competition torque. We ended up just using the drill, and the drive itself worked pretty well. I will look into getting an inventor/auto-cad file for the teams who think they can do four systems (what we did) in less than 50 pounds. A word of advice: while it may seem "cool" and "awesome" to put a 50 pound drive system, the frame better be welded, thin-walled box aluminum and the arms must be light...Very light.

[Mike Schroeder]

Okay so baker and koor are selling these things , soon, this leads me to wonder what marval of machining The T-Kats are gonna have on their robots this year.. I am afraid... Seriously Afraid

[Andy Brockway]

As always, a very nice design. I was hoping you might change your mind about sharing the fisher adapter design but I completely understand.

How much of the gearbox will you be sharing? Is the shifter the same internal rod with hex shaft? Gear types and ratios?

[Andy Baker]

Originally Posted by Andy Brockway

As always, a very nice design. I was hoping you might change your mind about sharing the fisher adapter design but I completely understand.

How much of the gearbox will you be sharing? Is the shifter the same internal rod with hex shaft? Gear types and ratios?

The FP adapter design worked out well for us, until we got to IRI. The needle bearing on the output shaft found it's breaking point. This is a planetary assembly that we want to sell in the future, but it needs some improvements before that is done.

I do plan on putting together a descriptive paper on this, just not all of the print details. We used the same internal hex shaft shifter. Here are the ratios used:

CIM motor: 18 tooth, 32 dp
Intermediate shaft: 64 tooth, 32 dp (mates w/ CIM gears), 1/4 face

Low gear: 15 tooth, 20 dp, 14.5 p.a. 3/8 face

High gear: 28 tooth, 20 dp, 14.5 p.a. 3/8 face

Shifter/output shaft:

Low gear: 48 tooth, 20 dp, 14.5 p.a. 3/8 face

High gear: 35 tooth, 20 dp, 14.5 p.a. 3/8 face

12 tooth, size 35 sprocket (qty.2)

Andy B.