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Building and electric racer

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okay this is the electric car project these are the materials that you have you have a couple of traction bands you a couple of big wheels couple of little wheels for different gears a nut bolt you have a cable clamp to service a motor mount you have a motor a straw a switch and extra wire a battery pack a paint stick to use the chassis those are the things that come with your kit and the other things that you how about a couple of axle to a couple of axles and a couple of things you might need also Tandy to have a screwdriver flat-head screwdriver or not you can use a Philips either the screws either so either one of those will be helpful a drill is helpful a glue gun is helpful these are available in the classroom all I can do some drilling for you hopefully we'll get some glue refills this is all that's in this room right now so I'm hoping to be able to get this car done with just that amount so here we go first thing you might want to do is take your traction bands and put them around the big wheels when you try to do this when they're on the car a lot of pressure on and it tends to snap things off when you don't want them snapped off so probably the first thing traction bands it's not too hard to take them off if you want to take them off later but the put them on tends to be a little pressure and you might want to make sure that not going off the the side of your tire here because this might hit the side of the track if you have the rubber over the side hear the rubber hits the side of the track and it's really like breaks at the plastic it's the side of the track and tense of Ride Along so get that one on second one okay so the traction bands are on okay next we're going to drill a hole to mount the motor now I like the back wheels to be over this little part of the paint stick that has kind of cut out right here so what I usually do is right around here I'm going to drill a hole just a little bit up from there cuz what's going to happen is and we can Mark a whole here I would like this to be just slightly in front of the middle of this the tires will be there the gears of a Justin front and I'll be giving a good push on this so I'm going to line it up with the it's a little back grab something to Marky Mark with a pencil till looks like somewhere around in here is where you're going to drill a hole so maybe you can see it's at the front of that kind of right near the middle so I'll take my drill right here okay so there we go we have our hole drilled in there and now what I'm going to do is I'm going to mount the motor on there but before I mount the motor what I'm going to do is I'm going to put the smallest gear the smallest gear here of the for that fits on the spindle from the motor kind of got to push it on hard it's meant to fit tight so it doesn't slip while the spindles turning and then what we're going to do is put the cable clamp around the motor and then the screw the bolt through both sides of the cable clamp like this and then through the hole that's drilled in the paint stick car chassis and then we would take the the not get that on the back can start tightening that up no no matter how much we tighten this up it's going to this is still going to have a tendency to spin because this is only connected at one location and it's way on the outside weight of this so I will tighten it down some tickets going to do I've got my hands over the back here I'm holding the screw the the not with my fingers and I'm and I'm turning with the screwdriver the top of the screw till it's fairly tight okay now you can see it still has a tendency to turn so when we're all done here what we're going to do is put a little hot glue down here on this side too so to be anchored on this side with the screw will be anchored on this side with some hot glue then it won't turn but we want to wait till this is lined up to tanker this set so we'll just kind of set that aside a little bit here now the next thing we're going to do is start to get our Wheels ready to be put on the I am going to use the typical gear that you'll use on your axle will be not the small of the three that are left and not the biggest but the medium one and what I'm going to do is start getting that on one of these axles so when I try to push it on it's really hard to get that on there so there's a couple other tools that might be useful here and you want it to stick on there well you don't want this to be able to turn and not have the axle turn because the gear is going to be pushing this from the motor If this just turns around your axle your wheels aren't going to move so this has to be tight this connection we show you something you can use in the room okay here I have a little block it says axle hole right there this is what put for putting your gear on the axle you put the axle so it'll look like it'll go down into that hole and then you take a little Hammer here ham down and you can see it starting to go through now it's still really tight but we want to do is give enough room so that we can put a wheel on this side and it looks like maybe just a little bit more than this much hanging out this side for the wheel so just a lil more here looks like the wheel go on now so I'm going to put one of the wheels on so is this again it's supposed to be tight I start to put it on it's not going on real well what you should do is put the wheel now down it again grab a hammer will Taps Hilton there we go now that's in nice and tight so this is what it should look like next thing I'm going to put a bearing around the outside so that this axle can turn inside some we're going to use this straw as a bearing now I have to leave some room to put the wheel on the other side so I'm kind of just going to fit this over the outside and say well I'm going to need probably about that much room on the outside so they can grab some scissors so now I'm just going to grab my scissors and give a cut to the strong a little Mark there see where it is cut that off struggles around naked see that's a little long it looks like I don't have quite enough room on this side so that's okay a little longer just cut a little bit off now the other thing is this that I'll show you right now the problem here is the bearing doesn't fit real tight around the axle you see if I can get this up where you can see right there there's there's room there for this to move around it will tend to so one thing you can do is you can take the straw and cut it up this way straight up the straw now there is I can really unroll the straw and now if I wanted to make you see I flatten it out but what I wanted make it tighter so I'm going to roll it tighter so that the hole in the straws smaller than what I'm going to do is take a little piece of tape I just got a little piece of masking tape here I was just a little piece of masking tape and tighten this up to be a tighter small circle that maybe even if it's around this little bit of there we go I just want the tape on there to basically hold it till I glue it down okay so now it's much smaller when I put this around it's a pretty tight fit it's also a little too tight on this side I feel some friction and I might want to go back and undo it I make it a little bit bigger so there's some stuff that this isn't just going to make it self happen on its own it will be sometimes when you have to undo things go back and redo that's part of building and engineering and just be happy that you're able to do the stuff she have hands and opposable thumbs listen up now I made it really too tight so again how they mess up think I need a new piece of tape now so might take a few trials sa'right stay calm. I'm just going to put around the outside there it seems like it's been pretty well little piece of tape there just to hold it till I hot glue it down the hot glue is really wasn't all that now it's turning nicely in there so then so again it might start to go in but it's going to be real hard said it with the one you want pounded in down on the bottom here grab a hammer and it should go down and now we have our Wheels able to turn if I hold the bearing you can see his I hold that straw the wheels turn around the axle so that's what we were going for now we'll do the same thing with the other wheels these are a little easier don't have to worry about the gear on this one so just axle in that wheel found it down in be careful you can pound it right out the other side so just nice and easy like now are bearing goes around this so I'm going to cut a piece we'll see how it fits their looks pretty good and again I'm going to cut this one make it a little bit smaller than normal little piece of tape to hold it now we've got our bearing to go around their axle and then the wheel on the other side again you going to do it this way you can do it the other way just probably going to have to use a little hammer something that you can just tapped out on that anything it's heavy would probably work nice and easy there we go now this is together now these wheels can turn around that bearing okay so let's get the hooking up the circuit on here so to hook up the circuit here's our basic thing for the circuit we are going to have one of the leads going to our motor then the other lead from our battery pack so this is all with the bat my back is going to go to the motor the other one's going to go to the switch might as well start looking these up so what you can do is take either the red or the black it doesn't matter it works either way with the setup twisted around one of the posts on the back of the switch and then take the other one and that'll give it to one of the connections on the motor put it through the little hole and then twisted make sure you don't use glue here glue is a plastic plastic an insulator if you try to connect these with an insulator you you might even make it so no electricity flows the other part of the circuit we need is the extra wire you might need to Twista what are the extra wire to get those wires to be a little bit more like braided so they stay together or else when you try to stick them through a hole though separating it becomes a pain so then through the little hole here and the others the switch twisted around one thing you want to make sure it's at these two wires can't touch each other so you can see that that doesn't make it over to the other side we could also put a little solder on this later to hold that what about wire goes to the other side of the motor this is your circuit all we have to do is put batteries in there right now and the motor will run before we do that we want to get these things hooked up so now that they're hooked up we can find out maybe where we can put them so we want to put them where there's not a lot of stress on the wires we can always tie the wires down later so I'm going to put the battery pack somewhere around right here I'm going to put a little hot glue on there to do that and then I'm going to put the switch maybe right here at either hot glue or sometimes with a switch hot glue works super glue might work pretty good try some super glue here but with this I'm going to use hot glue so I have a hot glue gun real in here a little bit but that's on the back here if this that's stuck right on there and then maybe little Gorilla Glue here careful using super glue of course if you get any super glue on your fingers and use call like nail polish remover if you can find that I can help to get it off so I'm going to put this right on here sideways a little bit I'm going to make sure there's a little hole on the other side like this I don't want to get glue up in that hole or could actually glue the switch and then I can't turn it that happens I need to go to the extra parts bin myself an extra switch and I tried just a couple of drops here Grill group okay now again when working with super glue just be very careful so I'm putting the switch on the side right here you can see give it a little time there so be patient here make sure that you're glue now one thing I'm doing yours on moving a little fast I might not be giving my glue enough time to really settle you might want to take a few minutes here going maybe watch some Dance Moms or something like that and relax and come back later and work with this so going to give this a chance to settle in there okay so our circuit is obviously I didn't give enough time for that Gorilla Glue to take hold so I'm going to do a little cheater here to help hold I'm going to use a little tape or unilateral bonding strip going to put the tape right over the switch and then hold that down to the chassis till it at Gorilla Glue has little chance to dry hot glue might work a little better there hot glue as a Tennessee to seep into that little hole though so I can put just another little dab on each side not this Gorilla Glue again I don't recommend working with Superglue too often but that's a good place for okay last thing we have to do where to get this car running is to get the wheels lined up on here the harder wheel is going to be the one in the back we just have to make sure that the gears line up now it's usually not best if you put one gear right over the other like line them up right now best middle of the tire middle because there's it'll sit a little below the chassis when you try to connect it you might want to put it just back a little bit so instead of being straight lined up you can see that this wheel is back I'm exaggerating a little bit this way from the motor to the motor just kind of pushes against that gear so line things up here it's like somewhere around here is going to be where we want to be so now hot glue again going to start to put the hot glue around the bearing now this is where you're going to have to probably put a lot to get this stabilized in here don't be shy with this glue at this point hopefully have plenty to work with and be careful of running this before your glue is had a chance to really solidify straighten up a little bit alright looks like we'll have a pretty good cold there now the other way any kind of check to move this around now while it's still a little hot and movable and I want to try to make it pretty straight and also I want the gears to be lining up the gear on the on the motor there you can see and the gear on the axle or lined up the axle looks pretty straight across that's kind of an eyeball thing and then let that cool we can put the other Wheels on the other Wheels can go anywhere cut this off make it shorter whatever you want I'm just going to take the wheels and put them somewhere up here near the front try again try to eyeball straight you don't want to put it on like this or else that's going to tend to turn your car I mean hydrating it of course so pretty straight there don't forget you can move some things after you get the glue on there pile on some hot glue mind up pretty straight go back and check the back one that's getting pretty solid right there so give a minute for this hot glue to pardon and then we have two things left to do put the batteries in and secure down the motor without a little drop of glue in the back you also might want to take down the wires this point and then if you want to you can think about making a body or your car to either get the extra points while you're racing or to enter the design competition this is still really really moist so I'm hesitant to do anything with it right now one thing I do want to see is usually with your back wheel you're going to have a little Play-Doh move in and out a little bit you want to make sure that it does not I'm off the gear when you're moving it in and out so if you watch this one when I move it all the way in it's still on the gear when I move it all the way out it's still on that gear if you have too much planned it comes off the gear that could be something to slow it down while it's running when you're those to come from one another so let's see I hope this isn't it's still not really dry but see how this goes now put a little bit of hot glue hair on the back glue down the motor decision course you're going to let that cool down and solidify we can take a little tape and take these wires may be a little bit down so they don't get caught up in stuff on matter really you take them down looks like that Gorilla Glue didn't work too good around my switch so I think I'm going to go to some hot glue here switch doesn't even need to be glued down it'll work just fine like this but I like to have things cured yeah that Gorilla Glue is just not dry yet so I'm just going to leave it there and let it go so let me put a couple bad reason this thing and we'll turn the switch on and see if it actually works and see if we've made a car that's good grab some used batteries here I don't know how good they are hopefully I grab some that have a little juice left in them so I can put batteries in the normal way then my car is already going to switch can you switch off here so I put my batteries in normal when I turn it on the car moves backwards maybe I don't want my car to move backwards so you can see is I let go there it goes so what I can do here to make my car move forward just take these out and put them in the way they're not supposed to be in there set up putting the flat side against the spring you put the flat side on the other end flip the other one also now you'll notice when I turn it on car goes forward so you can run this forwards or backwards it's ready to go now the only thing is that switch is still a little sketchy there so you might want to if you use some super glue and you didn't give it enough time like me the reason is I didn't enough time is that this is your race or are you ready to go you ready to bring it in put it on the track and I'll write your name on the bottom here in permanent marker and good luck if you want to make a nice body around the outside and cuc get some extra credit when you run or getting the competition so good luck building eraser

Uploaded by Brian Benz.

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Building and electric racer

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