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-   -   pic: Just a few parts left (http://www.chiefdelphi.com/forums/showthread.php?t=91419)

billbo911 10-02-2011 16:36

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.

Matt C 10-02-2011 18:01

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!. :ahh:

jason701802 10-02-2011 18:17

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.
Quote:

I can literally just pull the pinion off this bad boy and press it onto our RS395
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.

billbo911 11-02-2011 00:05

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.

Matt C 11-02-2011 09:10

Re: pic: Just a few parts left
 
Quote:

Originally Posted by jason701802 (Post 1020118)
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.

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

RyanN 11-02-2011 09:15

Re: pic: Just a few parts left
 
Very nice!

kramarczyk 11-02-2011 15:08

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.

cRIOandMilk 14-02-2011 17:25

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

jason701802 14-02-2011 18:13

Re: pic: Just a few parts left
 
Quote:

Originally Posted by kramarczyk (Post 1020668)
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.

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

Quote:

Originally Posted by cRIOandMilk (Post 1022925)
Hey, we just need to know what breaker to use with the bane bot motors. bros. thanks - 649

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.


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