11-02-2010 22:27

Stephen Kowski

Re: pic: Killer Bees Team 33 Teaser

kicker pull back? possibly power a winch? either way I'd bet those anti back drive pins are still in that dewalt

11-02-2010 22:29

Andrew Schreiber

Re: pic: Killer Bees Team 33 Teaser

Nice to see the Bees are hanging Eric. Let's have some more details. Standard TB and standard NBD transmission on the CIM? (3/4/12) Locked in 1st gear? 36:1 reduction? If I recall there are back drive pins which I assume you left in place.

Knowing the bees this is for some sort of arm. Turreted?

11-02-2010 22:37

Eric Yahrmatter

Re: pic: Killer Bees Team 33 Teaser

The Dewalt is in 1st gear, and after the Toughbox, we end up with a 153:1 reduction...I wonder what this is for...hmmm

12-02-2010 03:36

daltore

Re: pic: Killer Bees Team 33 Teaser

Looks like what we were about to make tonight when our arm didn't pull the robot up. Then we just unjammed the arm Bigger sprocket is working wonders too, lifted me up no problem in a power test. Scary as all get out...

Something very slow with a ton of torque... Forklift?

12-02-2010 09:22

billbo911

Re: pic: Killer Bees Team 33 Teaser

Following Dr. Joe's example , this set up should provide 34,780 Oz-in. of stall torque at about 35 RMP.
With 180 Lb-Ft of torque, lifting a robot is an easy proposition.

12-02-2010 09:34

Kevin Sevcik

Re: pic: Killer Bees Team 33 Teaser

Definitely makes for easy lifting if potentially... sedate. Given that a 153:1 gear down leaves your end effector turning at about 35 RPM. At 2 seconds per revolution, one would hope you're not planning on needing more than one revolution to complete a lift....

12-02-2010 09:39

Bruceb

Re: pic: Killer Bees Team 33 Teaser

Where do you get the dewalt transmissions? Do you have to buy a whole drill?
Bruce

12-02-2010 09:40

Mr.G

Re: pic: Killer Bees Team 33 Teaser

I think they are planning on lifting there whole alliance.

12-02-2010 12:40

Eric Yahrmatter

Re: pic: Killer Bees Team 33 Teaser

You do not have to buy the whole drill. Dewalt parts can be purchased here:
http://www.dewaltservicenet.com/Products/DocumentView.aspx?productid=75463&typeId=19037&doc umentId=37924

You will need items 42 (outer case) and 61 (transmission assy) to get this to work. Follow the instructions in the Nothing But Dewalts whitepaper:
http://www.chiefdelphi.com/media/papers/1592

Total cost for the transmission parts is $122.95. I have seen it cheaper elsewhere in the past though.

13-02-2010 01:52

daltore

Re: pic: Killer Bees Team 33 Teaser

We've somehow found a source for $55 DeWalt drills (the whole thing minus the batteries). I think. I'll ask our mentor tomorrow if you'd like.

13-02-2010 05:29

sanddrag

Re: pic: Killer Bees Team 33 Teaser

Remember guys, power equals work over time. Losses neglected, any motor can move any load, it's just a matter of time.

15-02-2010 11:02

Bruceb

Re: pic: Killer Bees Team 33 Teaser

daltore, Yes if you could find a better price that would be great.
Thanks
Bruce