 | | Re: Posi-trac differential?
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(...) version than I wanted. I took some digital pics before I tore it apart. (...) idler. The four 8t gears were the "worm wheels" meshed with the worm gear, and the 16t gears meshed in pairs to mechanically connect the two sides of the diff. The (...) (23 years ago, 6-Sep-01, to lugnet.robotics)
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| | powering RCX2.0
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Hello, I think I remember a post about using a 9V adaptor to power some version of the RCX during testing, but could not find it on the website. Do I remember this right? Thanks! -cmr (23 years ago, 6-Sep-01, to lugnet.robotics)
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| | Re: powering RCX2.0
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RCX 1.0 is the only unit that has a 9 volt adapter port. You can use an ac or dc 9volt supply on this. The power supply for the trains is suitable. -- Bob Fay rfay@we.mediaone.net The Shop (URL) Radu" <lego-robotics@crynwr.com> wrote in message (...) (23 years ago, 6-Sep-01, to lugnet.robotics)
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| | Re: powering RCX2.0
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(...) However many people had problems when using DC power regularly - probably becuase it burned out one half of the rectifier. I'd advise using a 10V AC adapter if you're gonna be using it regularly. (Of course you've gotta get a RCX 1.0 first!!) (...) (23 years ago, 7-Sep-01, to lugnet.robotics)
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| | Re: Posi-trac differential?
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(...) instead of the one I was going to ask about perpetual motion machines... :o) Elijah (23 years ago, 7-Sep-01, to lugnet.robotics)
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| | Re: Posi-trac differential?
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Hi everyone, I have finished updating my site, and have included a page for my Torsen differentials. Sorry for the wait :) you can go to my page here, and then go to the ideas section, the torsen is at the bottom of the page... (URL) go straight to (...) (23 years ago, 7-Sep-01, to lugnet.robotics)
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| | Re: Posi-trac differential?
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(...) gears are nifty for things like this. I wish there was a smaller piece that could be used to lock them on... Actually I think there is. did you use a technic triangle in your diff housing? If so, you could stick a couple of the small offset (...) (23 years ago, 7-Sep-01, to lugnet.robotics)
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| | Re: Posi-trac differential?
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Nice! I particularly like the way you put the 12-tooth gears diagonally opposite for weight balance in the turntable version. I'm going to try moving them in Brian Alano's triangle lift-arm housing (third rototype) design and see how that affects (...) (23 years ago, 7-Sep-01, to lugnet.robotics)
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| | Re: Posi-trac differential?
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The first sentence should say "16-tooth". Dennis (...) [snip] (23 years ago, 7-Sep-01, to lugnet.robotics)
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| | Re: Posi-trac differential?
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(...) *Very* nice! It's the elegant solution I couldn't conceive. (...) Agreed! (...) I looked at moving them to the diagonals, too. I'd be worried about slippage in high-torque situations. 16-tooth gear seems pretty stable already. What about (...) (23 years ago, 8-Sep-01, to lugnet.robotics)
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| | Re: Posi-trac differential?
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I'm not sure I follow you here. Even though the 16-tooth gear doesn't mesh as deeply, it seems to be sufficient to prevent slippage. There is a little more slop, however. Note that in my suggestion to move the worm gear shaft to the diagonal, I may (...) (23 years ago, 8-Sep-01, to lugnet.robotics)
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| | Re: Posi-trac differential?
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You can substitute 16-tooth gears in place of the crankshaft pieces to jam the dark grey gear. The disadvantage is the extra width. Dennis (...) (23 years ago, 8-Sep-01, to lugnet.robotics)
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| | Help: RCX 1.0 power adapter
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I just picked up a 1.0 set, and I looked through the documentation for info on the type of adapter to use. There appears to be nothing at all in any of the manuals. So I'm looking at the RCX itself. It says "9-12V~". Is the "~" supposed to indicate (...) (22 years ago, 31-Aug-02, to lugnet.robotics)
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| | Re: Help: RCX 1.0 power adapter
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I use Radio Shack 273-1631. I have a number of these and I have been using them for a couple of years. These devices have a voltage selector switch which I set to 9v. In fact, I wedge a short length of wooden tooth-pick in the switch slot to avoid (...) (22 years ago, 31-Aug-02, to lugnet.robotics)
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| | Re: RCX 1.0 power adapter
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"Tony Hafner" <lego@NOSPAM.hafhead.com> wrote in message news:H1opsA.EHz@lugnet.com... (...) info (...) of (...) Use a Train power pack. That's what the port had in mind when they made it. I've run pbricks for weeks with no issues. The only (...) (22 years ago, 31-Aug-02, to lugnet.robotics)
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| | Re: Help: RCX 1.0 power adapter
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"John Barnes" <barnes@sensors.com> wrote in message news:H1pMt3.Ao3@lugnet.com... (...) apparent (...) I bet if you put that radio shack supply onto a multimeter you'd notice it went as high as 13 volts... Them multi selectors are not very acurate. (...) (22 years ago, 31-Aug-02, to lugnet.robotics)
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| | Re: Help: RCX 1.0 power adapter
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Your comment intrigued me into checking. I grabbed a couple of transformers and checked them (with a 4 1/2 digit true rms meter). Off load (open circuit) one reads 10.4v a/c, the other 10.9v a/c. That is well within Lego's 9 - 12v a/c spec. JB (...) (22 years ago, 31-Aug-02, to lugnet.robotics)
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| | Re: Help: RCX 1.0 power adapter
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Thanks to everyone for the responses. I feel a little better about actually using the port now. I was concerned because of the speculation a while back regarding why the port was removed, and I have no intention of burning out the unit. -- Tony (...) (22 years ago, 3-Sep-02, to lugnet.robotics)
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