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Author Topic: Bump absorber?  (Read 2581 times)

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Offline megaman935Topic starter

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Bump absorber?
« on: February 11, 2007, 08:43:13 AM »
 I was thinking about making a basic 4 wheeled robot and I want it to be able to take on gravel, hills, etc. and to be able to absorb the shock. anybody know how I can do that?

Offline hgordon

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Re: Bump absorber?
« Reply #1 on: February 11, 2007, 09:48:00 AM »
Consider starting with the chassis/drive of an electric R/C truck such as the E-Maxx - http://www.traxxas.com/products/electric/emaxx/trx_emaxx.htm
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Offline JesseWelling

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Re: Bump absorber?
« Reply #2 on: February 11, 2007, 10:15:25 AM »
This is what I'm doing but I'm using a 1/18 scale....it's really to small to be convenient.
If have the cash http://www.trossenrobotics.com/store/c/2659-Rack-and-Pinion-Steering.aspx looks like a good place to start.

But remember car steering is way harder to plan for than tank steering. ;) do you research on non-holonomic vs holonomic robots. you don't have to grok all the math, just the concepts.

Offline megaman935Topic starter

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Re: Bump absorber?
« Reply #3 on: February 11, 2007, 12:26:26 PM »
Thanks and I'll take your advice Mr. Welling. I live in Florida so my backyard is all terrain so that's why I was wondering. :D

Offline Admin

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Re: Bump absorber?
« Reply #4 on: February 11, 2007, 03:37:34 PM »
make sure your RC car has a nice motor and good gearing. make sure its designed for off-roading, and doesnt just look like it can off-road.

dont skimp for price, trust me! i learned this the hard way . . .

Offline Hal9000

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Re: Bump absorber?
« Reply #5 on: February 12, 2007, 03:43:18 AM »
Hey, this might be a good book

http://www.amazon.co.uk/Build-Your-All-terrain-Robot-Robotics/dp/007143741X/sr=8-1/qid=1171273234/ref=sr_1_1/202-5371113-4289442?ie=UTF8&s=books

Also, I guess if you have springs/shock absorbers in a robot, you need to make sure you get the motors, wheels etc able to commuate properly since there may be some movement WITHIN the robot (depending on how you propose to construct it)

This, at least, was always the case when I played with lego and shock absorbers.
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Offline ed1380

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Re: Bump absorber?
« Reply #6 on: February 12, 2007, 03:26:27 PM »
Problems making the $50 robot circuit board?
click here. http://www.societyofrobots.com/robotforum/index.php?topic=3292.msg25198#msg25198

Offline JesseWelling

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Re: Bump absorber?
« Reply #7 on: February 14, 2007, 02:08:28 AM »
I'd go for the 4wd Servo bots from Budget Robotics.
But don't skimp on the batteries, Servo's can really eat up batteries.

 


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