I’m new to vex so I’m completely unsure on actual logistics of a Bot, but I’m making a rough CAD of a potential drivetrain and I can’t seem to make a four wheeled one. I’ve been working on the gear ratio and I finally found one that fit but I just realized if it’s even worth it. Here’s a picture of this goofy thing;
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My team ran an 8 wheel drivetrain last year and it worked alright, but really you only need 3 wheels each side. Dont use all the same gear type since it wont fit in size limit, we use a mixture of 60T and 32T
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many teams use 8 wheel drive trains and I assume you are referring to 4 on each side. However, I would suggest changing this gearing in the picture. I believe this is a 60t to a 12t, and I am guessing you would be using 100 rpm red cartridges which is actually pretty reasonable and liable statistically. However, I would advise to opt for a more conservative rpm such as 450 or if you are a new team, then 360. These two would be run on 600 blue cartages. you can achieve this by running 36t gears to 48t gears for a 450, or 36t to 60t. These have been super competitive gear ratios that many teams have used in the history of vex.
Here is a link of a very useful resource when coming up with a drive base.
oh I kind of got off topic there, but to answer your previous question, yes 8 wheels are totally liable. the reason why people run this preference is because having more wheels would allow you to sink into the tiles less, which in return would help increase overall acceleration.
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That gear ratio is way too fast, even on red motors. It looks like your doing 60:12 on some motor, 5 times faster. I suggest visiting Catalogue of Drive Gearings to find a more …optimal drive setup that doesn’t use 12 gears.
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So, while an 8 wheel drive could indeed be viable, I suggest you look at this forum thread for alternative gearings.
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