|
Post by sumyunggai on Dec 12, 2016 16:11:02 GMT -5
Even though I'm terrible at most math: you can find gear ratios in any gear train by this formula Ratio = Driven gear/Drive gear Thus if gear A (Drive gear) has 8 teeth and gear B (Driven gear) has 10 teeth: gear B divided by gear A = 1.75. That means that gear A will turn one 1.75 times before gear B makes one full rotation. Someone please correct me if I'm wrong. PS I haven't tackled this one yet...
|
|
|
Post by k80 on Dec 12, 2016 16:24:28 GMT -5
Even though I'm terrible at most math: you can find gear ratios in any gear train by this formula Ratio = Driven gear/Drive gear Thus if gear A (Drive gear) has 8 teeth and gear B (Driven gear) has 10 teeth: gear B divided by gear A = 1.75. That means that gear A will turn one 1.75 times before gear B makes one full rotation. Someone please correct me if I'm wrong. PS I haven't tackled this one yet... a 1:1 ratio is assumed. I tapped my engineer friends and went around and around with this one a couple times...
|
|
|
Post by ladybug on Dec 12, 2016 16:45:01 GMT -5
a 1:1 ratio is assumed. I tapped my engineer friends and went around and around with this one a couple times... Yeah, what k8 said. I have no idea how these work, but a wise someone told me that since the teeth are the same size, they move 1:1 regardless of the size of the gear itself.
|
|
|
Post by helenahandbasket on Dec 12, 2016 17:14:03 GMT -5
I think what's a ratio of what is definitional, maybe, and everyone is probably right. Maybe this will help, I tried to keep the language consistent. The gears in this puzzle all have teeth that are the same size, so we could say that all the gears have a 1:1 tooth ratio. So if you're turning one gear a total of 12 teeth, they all move 12 teeth. For a lot of people, tooth count was the easiest way to do the puzzle. As long as all the teeth are all exactly the same size: If one gear has 12 teeth and the other gear has 24 teeth, then cranking the small gear twice (a 24-tooth move) will turn the big gear only once -- that's a 2:1 gear ratio. In this puzzle, anyone who did it with gear ratios instead of teeth, well, that's a job and a half!
|
|
|
Post by clemtownkernel on Dec 12, 2016 17:20:37 GMT -5
I think what's a ratio of what is definitional, maybe, and everyone is probably right. Maybe this will help, I tried to keep the language consistent. The gears in this puzzle all have teeth that are the same size, so we could say that all the gears have a 1:1 tooth ratio. So if you're turning one gear a total of 12 teeth, they all move 12 teeth. For a lot of people, tooth count was the easiest way to do the puzzle. As long as all the teeth are all exactly the same size: If one gear has 12 teeth and the other gear has 24 teeth, then cranking the small gear twice (a 24-tooth move) will turn the big gear only once -- that's a 2:1 gear ratio. In this puzzle, anyone who did it with gear ratios instead of teeth, well, that's a job and a half! I got it thanks to k8 - I spent most of my weekend learning about gear ratios though so at least I'm a little smarter than I was before I started?
|
|
|
Post by centaurofattn on Dec 12, 2016 17:20:54 GMT -5
I don't want to gloat, but my ASVAB scores were pretty awesome. I did the gear ratio method lol
|
|
|
Post by Jessi on Dec 12, 2016 18:58:25 GMT -5
I found an online "build-a-gear" that gave me a toothache.....
|
|
|
Post by jackoat on Dec 12, 2016 19:03:09 GMT -5
I counted teeth. What was messing me up was the fact that they put letters in the gaps around the gears as well.
|
|
|
Post by Jessi on Dec 12, 2016 19:12:26 GMT -5
That's what I ended up doing, it was far easier than pretending I understood one thing about gearology. Which I don't. I also drew a lot of swirly lines.
|
|
|
Post by Memosinstilettos on Dec 13, 2016 0:06:55 GMT -5
I loved this one, so steampunk!
|
|
|
Post by beckyp on Dec 14, 2016 1:32:08 GMT -5
I think I'm going to have to make these gears.......
|
|
|
Post by Jessi on Dec 14, 2016 11:25:00 GMT -5
I think I'm going to have to make these gears....... Instead of making them, try this....
Count around the gear, touching each tooth to represent one tick. If you count the amount of teeth, this will help you determine how many ticks are in a full rotation. Also, for each lettered gear, start with the top and see which way each causes the others to turn. Feel free to PM if you get stuck.
|
|
|
Post by thebardess on Dec 14, 2016 16:27:12 GMT -5
I think I'm going to have to make these gears....... I found things got a lot easier when I realized that Gears A and E turn the same way and Gears B, C, and D turn the opposite way. So if A turns clockwise, E also turns clockwise, while B, C, and D all turn counterclockwise.
|
|
|
Post by Geodus on Dec 17, 2016 17:15:25 GMT -5
I kept making little math errors, so I made a little spreadsheet to solve this:
|
|
|
Post by drcarmster on Jan 2, 2017 10:05:14 GMT -5
I have worked out all of the rotations several times but, surprisingly, seem to be getting some spaces. Am I missing something?
|
|