Tachometer

the old salt miner here and I bought this rpm sensor kit off of ebay the box was a separate thing I bought this is a different magnet than what came with it I like this magnet better is stronger and has a hole in it so I can fasten things and a little sheet of aluminum and I’m going to put this all together and see if we can’t make an RPM sensor for the mini meal this is the display for the rpm sensor and there’s two plugs here one for power and one for the sensor this part this senses the magnet as it goes by and we’re going to have to mark this and cut a hole in it so that this fits in there now it has these little spring clamps here so I’ll have to make the hole with that in mind I’m going to use the Dremel on it and mark it and cut it so what I did was I took this piece of cardboard and made a cutout will this fit down in there they’re just kind of traced around it and cut it out and now I can set this on here and mark it with this silver pin I like using the silver pin it it works pretty good on a lot of things the metallic marker and works really good okay I kind of saved you a little bit of showing you taking the drum while kind of cutting this out see a little bit of the silver there I had to fiddle with it quiet little bit to get these holes just right but now this fits in there really nicely I just push this in it snaps in and there it is and then it fits on this box I’ll have to look up the box look up on eBay and tell you what size it was with these kits there it is all snap together these kits are a little different a friend of mine got one and his is a little different than this one alright so next I need to figure out how I’m going to mount the box on and how I’m going to power it okay I’ve been doing a little experimenting and I dug through my jug of wall warts and I found this one and this is an AC to AC 6 volt adapter so it goes from 120 volts ac than 6 volt AC now interesting enough when you look at the back of this see if I can zoom in on that right here by my thumb it says it’ll run off the DC 8 to 24 volts or AC 6 to 18 volts so it takes just about anything you run it and so I’m going to plug this in and we’ll get her up and running here in a second ok there you see pairs on 6 volts AC take my little magnet here and will show that it works maybe maybe not here we go huh that’s odd it’s directional it works on this side but

not on that side so I can’t I can’t draw a hole tap it and screw this on because you see this is indented a little bit we get on that indented a little bit to put a screw head down in because I have to have it upside down like this for it to work so there it is well there it works turn it over they don’t work isn’t that interesting wonder which field it has to have there are no instructions with this by the way it just kind of learned by doing I guess there we go all right so now I’m going to I think I’m going to draw a hole through this knock this through there throw a couple holes in the top of this and mount it to the mill and then I’ll probably mount the box that I cut the hole in earlier to the side of the box of the mill and I’ll show you that here in just a second okay here’s the readout and I’m thinking I think of my mountain just like that I think that I’ll work and then I’m going to take this guard thing off I’m I’ve never use the guard I probably should but I don’t and that aluminum plate will fit there just nicely with a couple holes in it alright you can see I kind of got headed myself again didn’t film marking this but what I did was I put this down and I marked it with the pin and I got close to being round I’ve also already took this block that was on the front of the mill and use those holes to transfer and punched so ready to drill and I’m ready to grind off the edges and make it look kind of pretty before I mount the center right here okay so here we are hit the drill press ready to drill her away so we have this right here you a goddamn car well I did again I started melting this

and forgot to set the camera up and start filming sorry about that but this is the support for the RPM sensor of the tachometer and I think in a mill a slot in here because I figured well a slots going to work out better that way I can adjust it a little better up or down whatever it needs to be so here we go okay that’s done all right so when thinking about – how am I going to attach the box for the readout of the tachometer I thought well I want to be able to remove it at some point and so I settled on drilling and tapping right about here and here two screws and I think I’ll use the number 632 screw kind of a light fixture type screw and what I will do is I’ll drill an oversized hole in the bottom I’ve already kind of marked it where I’m going to drill it and so the screw will fit through that then I’ll set it up here and Mark it and then I will drill into that and tap it this is relatively thick plastic and should be able to tap it it should be okay I’ve already drilled one hole for to be tapped and now drill a second hole okay so if you’re wondering boy that’s kind of dangerous join into electrical box might hit a component or something I’ve already looked in there and there’s a really nothing right here now I’ll tap it and so the holes are tapped

never hurts the test with the screw and I think that will work quite well as long as I don’t over tighten the screws when I put the Box in this of course is a way longer screw then I will use but it was handy so here we have it screwed down worked out just fine ended up using switch plate cover screws and here is the tech Hollander display that snaps right in there and that’s how she’ll look alright so now I need to stick the magnet in it’s going to go right here and I’ve run it with the just the bag net stuck to that and it it’ll stay stuck but I’m not getting any chances and I’m going to epoxy that and but before I do that I got to spray a little brake cleaner on there and get that nice and clean that’s pretty neat that holds itself on we’re going to drill through the back of the case now we’re the wires like this wire will come through and plug in to the circuit board on the tachometer well I was like butter okay I’ve got the plugs in the readout fits in there nicely there we go all right as well I also have the sensor mast mitt mounted the magnet that I stuck on before is there the next thing I’m going to do is take that cord and um I got some stick on mount things I’m going to stick that on I’m going to leave this sensor cord full-length and wrap it up and put it in behind there tie it up with a cable tie of course I got it cricket

okay I got these wires stick down now I think I’m getting ready to test it okay we got tech number going and I have this handheld CAC also and if I can be able to get this in frame but we’ll give er a try to 36 is what it’s reading and the handheld is reading to 35.7 that’s not bad let’s turn up 1221 so 22 on the handheld we’re good we’re 29 then getting double I’m getting 52 so I’m thinking this meant the handheld’s miss reading you know I could have gotten this box and tied this indirectly I know some people have done that and I just I had to put these red boxes on on both them on my mail I bought this as a salvage mail I took a big chance and I paid for I think I paid 400 bucks for it examined the picture is really really really good talk to the guy that had it he assured me that nothing else has been up on it and I was lucky nothing else was been up on it but these boxes this one and the one in the back the para box were smashed and so I had to completely take it apart and solder it back together and I just don’t want to mess with getting in there and tying that directly in with it would probably be pretty simple to do but I’m not going to mess with it instead I’ve hooked up a wall work like I originally had it hooked up when I tested it and I’m happy with that down the road I may change things and do something different and take it off of here and it won’t be a problem I can easily do that alright that’s the end of this project I think this is going to be really useful thanks for watching please comment subscribe