Author Topic: Wheel differential drive questions  (Read 1111 times)

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Offline alucardTopic starter

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Wheel differential drive questions
« on: February 29, 2012, 05:26:53 PM »
 Hi all,

 My robot would have 4 wheels with the rear two wheels differential driven (powered by motors).
I need 4 wheels because it would be driven on a road condition, so I 'd need the stability.

1) How well would this work ? Would the front two wheels provide a lot of turning difficulty ?

2) How do I make (or mount) the front wheels free turning (idler wheels)? I can't seem to find a long rod of 3mm diameter to connect the two wheels. Any ideas ?

Thanks a lot!




Offline Resilient

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Re: Wheel differential drive questions
« Reply #1 on: February 29, 2012, 05:33:25 PM »
Why do you want to connect the front two wheels?

Can you not just let them both turn independently, like the front wheels on a shopping cart? That seems like the better way to go here.

Offline Mastermime

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Re: Wheel differential drive questions
« Reply #2 on: February 29, 2012, 05:39:06 PM »
Quote
Can you not just let them both turn independently, like the front wheels on a shopping cart? That seems like the better way to go here.
Yes, casters are the way to go unless there is a reason why you can't.  Check at your local surplus store.  I know mine has tons of caster wheels.

 


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