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Re: Ramp Angle Survey
If you have a robot with 4wd tank steering and a 30" wheel base, the maximum ramp angle you can achieve before you bottom out (with 2" ground clearance) is only a 7 degree ramp! (This is looking at when the robot gets to the top of the ramp and is going over that corner).
This is obviously a round about number and i didn't do any special calculations for it, but still it gets the point across.
So, you would need a ground clearance of about 4.3" if the ramp was 16 degrees (the angle I have been looking at for a ramp design). Again this is 30' wheel base and 4wd.
To make getting up a ramp easy, just make your robot 6wd and you should have no problems.
By the way, does anyone know the angle of the ramp 111 (wildstang) used in their 2001 robot?
Edit:
Oh, and if your robot's CG is 48 inches above the ground and in the middle of your robot (with your robot orientated so it drives where the short side is the front), you would tip over if you attempted a ramp of 18 degrees or more. I highly doubt that any robot will have a CG at 48 inches but I always look at worst case cenario.
P.S.
Please correct me if im wrong. I did these calculations in about 10 seconds using simple triangles.
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2006 GLR Safety Award (2nd year in a row)
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Last edited by DjAlamose : 09-01-2007 at 10:04.
Reason: Adding some stuff
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