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View Full Version : pic: gearbox open, geared down 10:1

RMS11
10-08-2008, 22:27
[cdm-description=photo]31777[/cdm-description]
KF987
10-08-2008, 22:28
Is this for two globe motors? Looks similar too what we almost used for our arm this year but ended up going with worm gears. Same reduction i think as well...

Keaton
artdutra04
10-08-2008, 23:31
Is there any particular reason why you chose to do the reduction in three stages?

If you are looking to build a custom transmission with an end ratio of about 10:1, you can use COTS gears from AndyMark with only two stages using a 50:14 (3.571:1) reduction in the first stage and a 40:14 (2.857:1) reduction in the second stage, for an overall reduction of 10.202:1. And if you have access to a milling machine or lathe, it isn't very difficult to lighten these gears with pockets and/or holes drilled through them.
AdamHeard
11-08-2008, 02:33
Is there any particular reason why you chose to do the reduction in three stages?

If you are looking to build a custom transmission with an end ratio of about 10:1, you can use COTS gears from AndyMark with only two stages using a 50:14 (3.571:1) reduction in the first stage and a 40:14 (2.857:1) reduction in the second stage, for an overall reduction of 10.202:1. And if you have access to a milling machine or lathe, it isn't very difficult to lighten these gears with pockets and/or holes drilled through them.

I agree with Art. You can greatly improve the design (and make it easier to manufacture) by switching to the AndyMark Gears.
RMS11
11-08-2008, 08:44
Is there any particular reason why you chose to do the reduction in three stages?

If you are looking to build a custom transmission with an end ratio of about 10:1, you can use COTS gears from AndyMark with only two stages using a 50:14 (3.571:1) reduction in the first stage and a 40:14 (2.857:1) reduction in the second stage, for an overall reduction of 10.202:1. And if you have access to a milling machine or lathe, it isn't very difficult to lighten these gears with pockets and/or holes drilled through them.

Ya there was a reason, and it appears it was a wrong reason :D so I am probably going to switch it around. I usually use wmberg, their gears are expensive but their choices are great ant they are ammazingly precise.