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 Robotics / 16105
16104  |  16106
Subject: 
Re: Posi-trac differential?
Newsgroups: 
lugnet.robotics
Date: 
Sat, 8 Sep 2001 02:38:57 GMT
Original-From: 
Brian B. Alano <ALANO@KIVA.spamcakeNET>
Viewed: 
4049 times
  
Dennis Williamson wrote:

> Nice!

*Very* nice! It's the elegant solution I couldn't conceive.

> 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 balance.

Agreed!

> For supporting the 16-tooth gear in the second design, why not use a regular
> axle of the appropriate length and two thin bushings? Or, if you have any,
> try an white Znap axle with a thin bushing. You appear to have the worm gear
> shafts on the same row of holes in the 40-tooth gear. Try moving one of them
> over one so their at diagonals. The 16-tooth gear doesn't mesh the worm
> gears as deeply, but it seems OK.

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 putting another #2 axle connector opposite the first one without fastening it to anything else? It would help with stability in one direction, and the worm gears hold it in the other.

> 
> 
> Dennis
> 
> In lugnet.robotics, Rob Stehlik writes:
> > 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...
> > http://www.ecf.utoronto.ca/~stehlik
> > 
> > or go straight to the torsen page here
> > http://www.ecf.utoronto.ca/~stehlik/torsen.html
> > 
> > Let me know what you think!
> > Rob Stehlik



Message has 1 Reply:
  Re: Posi-trac differential?
 
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 (...) (25 years ago, 8-Sep-01, to lugnet.robotics)

Message is in Reply To:
  Re: Posi-trac differential?
 
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 (...) (25 years ago, 7-Sep-01, to lugnet.robotics)

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