[PSUBS-MAILIST] gear set

[Alan via Personal_Submersibles]

Hank,
depends what size, & how many teeth.
There are some in the robot shop
http://www.robotshop.com/en/gears-belts-pulleys-tracks-sprockets-chains.html
There are a few smaller gears on hobby king
https://hobbyking.com/en_us/catalogsearch/result/?erp_category=&q=gears
You could buy some rod & make your own!
I have just got home with a length of ptfe rod to make some tiny
washers to go under 3mm screws holding my emitters down.
Expensive stuff at NZ $57- a metre for 10mm rod.
Alan


Sent from my iPad

> On 24/10/2017, at 1:59 PM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Hi All,
> I need ideas where I can find a plastic gear set for the wrist on my manipulator build.  I have the rotary actuator built and the gripper is well under way.  The way it works is, the rotary actuator shaft turns a shaft to open and close the fingers on the gripper (hand) The hand also free wheels on the same shaft so it can rotate 360 degrees continuously.  So I need a gear about 2 .5 inches in diameter and a matching gear about .5 inches or less  to drive the main gear.  The gear set will be driven by a second rotary actuator with a drive shaft enclosed in the arm member.
> Any leads would be great.
> Hank
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