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  #16   Spotlight this post!  
Unread 10-02-2011, 16:36
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I prefer you give a perfect effort.
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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.
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Unread 10-02-2011, 18:01
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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!.
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Unread 10-02-2011, 18:17
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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.
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Unread 11-02-2011, 00:05
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I prefer you give a perfect effort.
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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.
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Unread 11-02-2011, 09:10
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Re: pic: Just a few parts left

Quote:
Originally Posted by jason701802 View Post
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.
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Unread 11-02-2011, 09:15
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Re: pic: Just a few parts left

Very nice!
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Unread 11-02-2011, 15:08
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is getting his kicks.
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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.
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Unread 14-02-2011, 17:25
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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
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Unread 14-02-2011, 18:13
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Re: pic: Just a few parts left

Quote:
Originally Posted by kramarczyk View Post
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 View Post
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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