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Unread 13-12-2008, 19:51
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Re: Diffrent Transmission Advantages

AndyMark, AndyMark, AndyMark. All the gearboxes have their uses and strong points, but none of these people "get it" like AndyMark does. Andy Baker and Mark Koors do have the "unfair advantage" of not only being in FIRST for years, but being innovaters in FIRST gearbox design/application.

The dewalt gearboxes are good in some applications, but they are cumbersome to work with/mount compared to the others (not terribly so, but decent mods have to be done to mount and and to provide a usable mounting shaft). If modified right, they can handle plenty of torque and seem to be plenty reliable. I have only personally used them in one prototype, so my experience is all based on research and anecdotes.

Next are the banebots gearboxes. They initially had some reliabilty issues, but have since apparently been improved. I'm still weary of them as their general quality across the line is clearly inferior to that of AndyMark ("good enough" some people say, but not "good enough" as AndyMark). This lesser quality isn't really made up elsewhere, as AndyMark sells products that do similar things for a similar price and usually lesser weight overall. I'd steer clear of them if you can, even if their reliability truly has been increased, their safety factor isn't as big as the safety factor in AndyMark's products.

Now, for AndyMark. In a drivetrain, I feel that unless you have just an excessive amount of resources, at least some parts should be AndyMark or you are just straight up wasting your team's time. Many great teams use his gearboxes stock to great results; 67, 330, 1114. Even 254/968 used some AndyMark gears in their drive this year.

My reasoning on why AndyMark is usually the superior option is simply based on their expertise and quality; their gearboxes usually are the right size, weight, durability, cost etc. for the application at hand. So, if you're using them appropriately, you'll know you got a great deal on a durable gearbox that won't kill your weight or size budget. They also have such a great range of products that between all of it, you have almost limitless applications. Last year on 973, friday before ship we decided we needed a new gearbox setup on our arm. With just one custom plate, and a whole bunch of AndyMark products, we quickly made a 167:1 three motor gearbox.

As for his specific drive gearboxes, the Gen2, Super Shifters and Toughboxes all have their pros and cons based on your drive setup. If you don't want to shift, the toughboxes are a great option for a dual CIM drive. The Pros and Cons aren't really about weight or strength, just mounting and gearing options.

If you do want to shift, choosing between a Gen 2 and Supershifter is usually based on the drive design.

The Gen 2 Mounts by holes on it's horizontal top and bottom face, and has sprockets inside of it. Teams commonly mount it on it's bottom between two wheels, and run chain out to them (and chain from one of those wheels to the last pair assuming a 6wd), which is also their final gear reduction (330 is a great example of this).

If you want a face mounting gearbox, one that mounts by bolts on it's vertical face, the SuperShifter is the option. It has many possible output shafts for nearly any setup. It also has a 3rd gear reduction so it can usually directly drive a wheel with no further reduction (and therefore is great for west coast drive applications). This stage can be removed and it can be used in a face mounted setup similar to what I just described with 330.

A really long post, but I say AndyMark all the way (and he's not even paying me....).

Last edited by AdamHeard : 13-12-2008 at 19:53.
 


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