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 How is it that so many team representatives have the time to run up the post count to astronomical levels in a game hint thread, while so few seem to have the time to say thank you for a $6K gift that funds the ability to play the game? - Rich Kressly [more] |
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#1
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Re: How to make gears mesh properly.
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The see Andy's anwser -- I have not yet read it, but I know Andy and I suppose you will be fine with what he recommends. Joe J. P.S. The addendum and dedendum of standard (i.e. off the shelf) gears is typically 1/DP and 1.2-1.25/DP This means the standard pitch dia is NOT the average of the Root Dia and the O.D. For the record, In FIRST, I almost always add a few thousandths to the theoretical center distance. extra backlash will almost never kill you in FIRST. Jamming the gears together because the gears are a bit out of round will eat up your power like opening the frig on a hot summer day. |
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#2
13-01-2004, 11:34
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Re: How to make gears mesh properly.
One of our machinists showed me a trick. You can put a piece of ordinary notebook paper between the two gears and then mash them together as tightly as you can. You can then measure the center distace with your calipers. In my experience it is 0.002 to 0.003 inches more than the pitch diameters would indicate. The result are gears that spin freely with almost no backlash. Basically what Joe J. said.
Some teams I've talked to use the pitch circle spacing and then wear them in with a few hours of operation. I think I remember someone saying they let them run over night. |
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#3
13-01-2004, 15:53
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Gears
Does anyone have any direction as to where i can find some decent 39 tooth gears, and about how long they will take to deliver. Thank you all for your help and enjoy the 6 weeks this season brings. I look forward to seeing all who plan on attending the UTC New England Regional!!!!!!!!!
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#4
13-01-2004, 20:19
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Re: Gears
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