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Originally Posted by AndreaV
Colsons do hold up to abuse, but if the robot is going over rough terrain it will transfer vibration to the chassis, and I am not sure how good it will be on grass or dirt.
With the treads cut into them I am sure it will fling stuff all over the place as well. Great for concrete and indoor use though.
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Very good point, it didn't occur to me that vibration would be a design factor but you are absolutely right.
Another good reason to stick with pneumatic wheels for this occasion.
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Thanks for all of the advise everyone, after consideration, we have decided to go ahead and use the 8" pneumatic wheels;
if however, we do decide to use 6", at least I now know how to do it . We will be posting pictures of this design once everything is finished, and hopefully some video of the cannon shooting.
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Glad to hear that you've come to a decision. One word of advice, make sure you lower your center wheel more than an average 6WD.
We used the AndyMark 8" pneumatic wheels in '12 and made the mistake of only doing an 1/8th inch drop. Our maneuverability and turning were absolutely horrific.
Maybe someone else can chime in with the correct numbers, but I think I've read that you want at least a 1/4 inch drop on your center wheel.