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[Music]
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oh
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god
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i'm done
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wait hold up is that your final build
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for your chassis
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yeah it is isn't it great
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i'm sorry to break with you buddy but
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that though is not getting before
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i see no bearings and you're using kept
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nuts for your final build
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[Music]
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wait and there's no consistency in
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sizing for your c channels and axles
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oh is this sharp metal is my chassis
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that bad
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i thought i did a pretty good job
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building
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well at least you tried i'll tell you
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what allow me to guide you through some
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useful building techniques and habits
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that you'll find useful in robotics
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you do that for me thank you very much i
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really appreciate it
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c-channel is the most basic part in vex
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robotics
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it is used for building the frames of
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subsystems on your robot
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there are two types of c channel
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aluminum and steel
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aluminum is the standard for competitive
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vex robots
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a robot built with aluminum is lighter
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which reduces the strain on motors
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steel c-channel is heavier than aluminum
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but
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it is much stronger and less malleable
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as the material is denser
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both aluminum and steel c-channel come
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in two different lengths out of the box
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25 holes and 35 holes which is also
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known as a full length
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avoid cutting down c-channel when
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possible after it is cut off
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you cannot simply glue the metal back on
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before you decide to cut a piece of
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c-channel make sure you have a clear
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plan
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including a design drawing with
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measurements or a cad model
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then check the shared storage area in
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your shop to see if there is the part
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you are looking for sitting around
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already
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[Music]
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after checking around the shop and you
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weren't able to find the desired piece
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you can now consider cutting down a
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piece of c channel
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when securing a piece of c channel in a
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vise to cut
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make sure the c channel is mounted on
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the correct orientation so you don't
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accidentally bend it
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after cutting file down the sharp edges
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of the metal
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failing to do this creates a safety
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hazard for you your team
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and anyone who decides to inspect your
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robot
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and remember to mount your c channel
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with nylocks
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cap nuts can easily get loose and should
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be only used for prototyping
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ensure that the axle that you're using
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has the appropriate length
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to avoid it from protruding out too much
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before cutting an axle to the desired
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size first ensure that you have a clear
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and set plan of what you're building
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this prevents you from making any
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unnecessary cuts or scrapping the entire
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piece because it was cut too short
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like c-channel and other metal parts
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make sure to file down any sharp edges
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and corners after cutting
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make sure to lock and keep your axles in
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place with shaft collars
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routinely check that your shaft collars
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are tightened before use you don't want
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any axles to fall out during a match
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and make sure that they are tightened on
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the flat side of the axle
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ensure to use bearings whenever an axle
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is present
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not using bearings can cause axles to
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grind down the holes of c-channel over
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time
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and the increased friction can damage
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your motors
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when placing an axle between two pieces
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of metal make sure to use two bearings
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one on each side for better stability of
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the axle
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remember to use spacers on axles it
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helps with the positioning of parts
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and prevents metal and metal contact
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when using spacers
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make sure you don't just use only one
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specific size
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take advantage of all the available
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sizes of spacers to find the right
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combination
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aside from vex parts the most important
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tip of all
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is don't be afraid to ask for help
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senior students can share with you their
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own tips and tricks
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each team has their own robot but we are
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all part of the same community
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very insightful the flaws of my robot
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are very apparent now
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so now that you know how to fix your
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chassis don't make the same mistakes
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again
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understood i'll fix my problems right
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away
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[Music]
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all right i'm done let's take it for a
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[Music]
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spin
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because he's not programmed right
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[Music]
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you