10-02-2011 09:36

548swimmer

Re: pic: Just a few parts left

Looks great! What are the orange motor-esque objects?

10-02-2011 10:12

RyanN

Re: pic: Just a few parts left

I hope those aren't globe motors. They look like it due to the circular planetary gear set and the wires coming out of the front of the motor.

The only thing throwing me off is what appears to be a 3-screw gear set for mounting.

10-02-2011 10:21

Matt C

Re: pic: Just a few parts left

Looks like BB motors with the Globe planetary?

10-02-2011 10:33

Chris is me

Re: pic: Just a few parts left

I've never seen motors that look like that before...

10-02-2011 10:38

KC1AJT

Re: pic: Just a few parts left

i'm putting my money on FP or BB with special sleeves and gearing

10-02-2011 10:39

Matt C

Re: pic: Just a few parts left

I can't see the motors, just a goofy orange case surrounding them.

10-02-2011 11:04

dodar

Re: pic: Just a few parts left

Looks like some globe motors with pool noodle cut and zip tied to them

10-02-2011 11:41

jason701802

Re: pic: Just a few parts left

They are Black and Decker electric screwdrivers with the normal motor replaced with a BB395. They are two stage planetary transmissions that are $10 a pop.

10-02-2011 11:59

Bruceb

Re: pic: Just a few parts left

Can you tell us where you get these transmissions and how you adapt the motors to them?
Brice

10-02-2011 12:06

IndySam

Re: pic: Just a few parts left

Very nice use of an off-the-shelf solution. Well done.

10-02-2011 12:11

jason701802

Re: pic: Just a few parts left

They are called "Black & Decker A56NG 6V Alkaline Screwdriver". We have seen them at Home Depot, Walmart, and Target.
They are really easy to pop open. You just need to file a flat into the 395 shaft, cut it a little shorter and remove some of the plastic tabs inside the handle (as the 395 is longer than the motor that comes with it).

10-02-2011 12:16

Akash Rastogi

Re: pic: Just a few parts left

Neat new gearbox! Its always fun finding new COTs parts the kit motors can be adapted to. Great work.

10-02-2011 13:43

Chris is me

Re: pic: Just a few parts left

That is the coolest thing ever.

10-02-2011 14:03

Nick Lawrence

Re: pic: Just a few parts left

That really is neat, I'd like to give those a look sometime.

-Nick




lol post #254

10-02-2011 16:36

billbo911

Re: pic: Just a few parts left

This inspired me. So.... I walked to the OSH in the shopping center next to my office and found this $9.99 junky little "KC Professional" 3.6v cordless screwdriver with 21 piece tool bit set. I figured, "What the heck, ten bucks".


When I pulled the 6 screws out that held it together, what should I find but a RS380 driving the whole thing. It has a 3 stage planetary transmission on it. (I'm not going to be using it for much of a load, so it should be "fine")
I can literally just pull the pinion off this bad boy and press it onto our RS395 and reassemble it with very little mods at all. I'll post pictures once I get it finished. That should be this afternoon. In the mean time, here is a teaser.

10-02-2011 18:01

Matt C

Re: pic: Just a few parts left

Why didn't I think of that . . with all the wonderful "Harbor Freight" stores opening nearby, I'm tempted to do some shopping!.

10-02-2011 18:17

jason701802

Re: pic: Just a few parts left

We also bought a Harbor Freight screwdriver just like that one when we were testing our designs, we ultimately decided not to use it because the Black and Decker had a larger reduction and the transmission had a much better build quality (we could hear the Harbor Freight screwdriver skipping teeth when we stopped the output shaft) the Black and Decker ones are also the same price.

Neither the Harbor Freight or the B&D screwdrivers had pressed on pinions, they just had flats in the shafts, which was easy to replicate with a file.

11-02-2011 00:05

billbo911

Re: pic: Just a few parts left

It went together so fast, I forgot to take pictures. I had to diassemble it for these.




We won't be using this for any heavy work, just to run a roller on the front of the claw.

11-02-2011 09:10

Matt C

Re: pic: Just a few parts left

Beautiful! I think I know what I'm gonna look to do next season.

11-02-2011 09:15

RyanN

Re: pic: Just a few parts left

Very nice!

11-02-2011 15:08

kramarczyk

Re: pic: Just a few parts left

Great stuff guys. Would you mind sharing the ratios you found in those drills? Some of the folks that are having difficulty getting BB gearboxes might appreciate it.

14-02-2011 17:25

cRIOandMilk

Re: pic: Just a few parts left

Hey, we just need to know what breaker to use with the bane bot motors. bros. thanks - 649

14-02-2011 18:13

jason701802

Re: pic: Just a few parts left

The Black and Decker screwdriver has about an 80:1 reduction. Ones designed for lower voltage will probably have less reduction.

The RS395 stalls at 15A so there is no reason to use anything greater than the 20A breaker, which will allow you to use smaller wire.