 Hello calculator friends, okay, so this is video number 11 we were going to take this thing apart and Last time I was having difficulty removing this. I thought that may be some penetrating Lubricant would help but clearly it's not coming off. So instead I'm going to work from the opposite direction There appears to be this thing That I can remove so I'm going to try to do that and See what happens So this actually does loosen up So now the question is can I remove this part? That's going to be a little difficult How exactly do I remove that? How am I supposed to remove this? Well, what I could do is No, there we go. All right, so this thing just slides right off Should slide right off it's getting stuck on the end. Hey, why is it getting stuck on the end? Yeah, I should just bang it off Somehow I'm not really sure Why this is not coming off It doesn't seem to be stuck on anything in particular. It's possible that it's just being ornery Okay, so what I'm going to do with a part that stuck like this is I just tend to think that It's stuck simply because it's tight And rather than put some lubricating Penetrating lubricant on this what I'm actually going to do is I'm going to try something else Which is I have a heat gun right over here It's basically just like a hairdryer except it's made specifically for electronics, but we can use it And I'm just going to heat up this part To see if then I can remove it. So So I'm just going to Heat this up and what the heat should do is expand the metal Metal expands ever so so slightly under heat so by heating all the parts Whatever a gap is between the outer part and the axle Should increase ever so slightly and that's the increase that we want. We don't really care about Expanding the outer piece Or expanding the inner piece. It's actually the gap between the two that we really care about So I think that's probably hot enough So now and there we go Very easily so the parts are still quite hot So I'm just gonna leave this here Like this so this is the orientation With this screw facing that way. Okay, so what else have we got? We've got a gear that comes off and The gear sits on Okay, so this is this is interesting. We have an axle with a slot in it And this part right here, which I have to try to pry there we go There's a space that I can pry it off with So the part that Fits on here. This is sort of the The bearing that the gear sits on which should come right out so this is a bearing and It has a little tab in it and that tab fits into the slot and then the gear fits right over this and It's sized just so that the gear can rotate on this without actually moving up and down very much So that's actually very precise I'm going to attempt to measure the outer diameter here which is looking like 0.687 and then if I look at the diameter of The gear It's harder to tell. I mean it says 0.684 which is of course ridiculous So if I try to apply No force at all to the calipers I get point six eighty six five Or point yeah point six eighty six five now if I try to put that in the gear I'm getting point six eighty four, which is clearly impossible. So Not such a great instrument Nevertheless They fit so I'm going to go ahead and Stash these in the bag. This Yeah, this is still a little bit hot. So I'm going to set it aside Okay, so the next part is another part that looks kind of like that thing and It too is a bit stuck and I can just about Push it out. I added a bit. So this is going to be really difficult to take off I don't know why it's being so difficult but What I could do is Just sort of jam something in there and Maybe bang on it to get it out Something Okay, so and again, this has an orientation So the thick part is on the end and a couple of smaller rings on this side So the question is is this going to be another pain And indeed it is going to be somewhat of another pain So Unfortunately, I can't sit this on something and then bang on it Unless I do. I don't know something like this Yeah, that actually seems to work. There we go. Okay So, so this is this other funny looking part. So it goes like that Goes into the bag and we get another gear. So basically this is going to be a set of those a gear a bearing Spacer thing a gear a bearing spacer thing and so on all the way down to the end Where we will get to probably a gear a bearing and then maybe another gear Maybe a tiny spacer another gear another bearing and then this final end part So let's just go ahead and remove all these parts And hopefully through the magic again of video editing. This won't take very long So this last piece is Actually proving to be a little stubborn. I think because now the amount of friction in the top part is About equal to the amount of friction in the bottom part. So this end piece is actually beginning to come out So if I just keep prying at it Hopefully it'll just come right out And it is just coming right out it's just Requiring a little bit of force and there we go. So we have this piece here We have this gear which is actually different from the other gears this gear is somewhat rounded And that's sat right over here on this This other bearing surface That bearing surface in fact if we look at these two gears we can also see Okay, so the inside's the inside radius the inside diameter is actually Aha, okay, so the inside radius is actually the same Okay, so Now on the end we can see that there's a kind of a spacer here A spacer here and then Well, okay, sorry, this is the bearing and then a spacer and then there's this gear on its bearing So let's see what we can do to take this whole thing apart. I should just be able to pry it off Okay Yeah, here it comes. Okay, so again the order remembering the order is important As was remembering The orientation of this in other words it went on like this and not like this so that's kind of important So let's go ahead and remove the bearing Surface which is requiring a little more effort And all I'm doing is I'm prying and rotating there we go. Okay, so They're kind of stuck together, but there it is There's oil on it So there is the Bearing there is a spacer the spacer outer diameter is 0.816 so of course it's bigger than the bearing The thickness of it is point zero seven five So that's going to go in there Now because this Bearing surface came off of the other side I'm just going to compare it with an existing with all the other bearing surfaces Just to make sure that they are identical and yes, they are Completely identical Okay gear Okay, and then we have that gear is bearing surface which is on here, so I'm just going to Dig in with my pick To get a little space in there so that I can reach in there with my fingernails and Pull it off. Okay, and then we have this thing which I will just bang right off so This is for these are definitely not the right tools. You should never really Do this with your tools But I'm not sure what the alternative is I Guess I could you know make some sort of a fixture that just sits on here and then bang it with a hammer But this is just as expedient So here we go, okay Yeah, this is proving a little bit recalcitrant. I'm just going to leave this on here for now But anyway, there is the shaft you can see that there is a slot that runs the entire The entire length of the shaft There is a hole in the end here and there's a hole in the end here for the pin So, okay So that was the intermediate wheel Assembly all the parts are in bag 12. There's the axle that gets set aside So we have two other assemblies two other assemblies that we can look at The first assembly is the carry assembly and the second one is the Leibniz wheel the Leibniz wheel Is kind of interesting I'd like to take this one apart now we have Some pins in here that we are going to have to remove Yeah, both sides have a pin So I'm going to look at the pin that looks easiest to remove It's going to be this one Because the small end remember that the large end is somewhat rounded the small end is Recessed which means that it's going to be easy to get a tool in there and Remove it. So I'm going to take my Various diameter holding tool And I'm going to see Which of these uh-huh, okay So this is going to be a bit of a problem because my holding tool is too thick So I definitely will have difficulty removing this I may as well just try this one just for fun Again we've got a rounded end and this other end is It's not not very round. So I think that's the small end. So let's see Is this too small that's too small too small there we go that fits Right there. Okay, so I have all of my Banging tools here and the one thing that I am missing is a little hammer So we will pause for just one moment Well, I got the hammer Okay, the hammer I also got this jig I made this jig to actually fit on the Carry mechanism so that it can just sit on here. So we'll talk about that later But for now I've got this thing. I suppose I could use this That would be kind of convenient This thing is a little bit too big for that, but that's okay So I'm just going to raise up the other end This little too much That looks pretty good. I just want it nice and level so now I have two options here. I can use my bigger punch Here or I can use my smaller one. It looks like the bigger one has a good radius So I'm just going to give it a few test Hits to see if the pin is already loose enough. So here it goes Yeah, I don't know that this pin is actually Loose enough So what I'm going to do is I'm just going to heat it up right now again The point is to get that gap opened up a little bit. So before I think I talked about heating it up putting some Penetrating a lubricant in there to get into the space in between I'm not going to do that. I'm just going to heat up the part to see if it works Just Just heating it up. Oh Yeah, okay, so one thing that I did want to talk about Before I got into this. Let's go back to the intermediate gear the intermediate wheel assembly And I want to look at this part Compared to This part and you can see that this is all shiny and this is kind of dull. Okay Are They made of two different metals? I don't think so. I don't think they are But I think what's going on is that this is just their steel and this is actually lacquered with something So I Just want to draw your attention to that because then when we later clean these parts we have to be sure Not to apply anything that's going to remove the lacquer because the lacquer is the thing that is Protecting this against rust there doesn't really look like there's anything protecting this against rust Okay, that was just a brief aside and the thing is that if you look at this you can see that This this part is shiny, but this is not This one so there's a clear difference between the coatings of the metal This one again is also not shiny at all So let's go ahead and Put this back on Set that hanging in air So that I'm not also heating up everything else So I'm not sure whether it takes long or not But we'll try this right now Always being careful because this is now quite hot. There we go. It's coming out So now I'll just take my smaller my smaller punch just to punch it the rest of the way There we go, there's our pin So that worked pretty well. This pin is probably hot. So There is the taper pin Quite nice nicely done Okay, now there are plenty of taper pins here So it's important to know Which taper pin goes in which hole in addition? It's also important to know Which orientation it goes on to the axle? so What I'm going to do is I'm going to take A new bag and I might just Store the taper pin with the part and leave it in And leave it by itself in a bag. That's one way of doing it So taper pin goes in there. I have a sharpie here We're up to bag 13 I'll go back 13 7 7 3 3 9 and now is this hot? Yes, it's a bit hot So I'm going to just pry it off of the axle If I can may need a little bit of heating up again So I can pry it off No, there it goes. So it's still a bit hot And there we go So So that also the nice thing about taper pins is that or taper holes Is that they're tapered so one end is clearly bigger than the other That holds for the part as well as the hole in the axle So if we were to take the taper pin again And try to figure out which end it went into So it's either this way or This way so clearly it's this way All right, and the same thing with the part either it's this way or This way so So that's kind of nice because it sort of tells you the orientation of the part So that's bag 13 There's also this bearing surface This is asymmetrical There is this side which is slightly thicker than this side So I am definitely going to measure How big the one side is so it's coming out to be point zero zero five nine Versus the other side is point zero three three So that's important to know That will also go into bag 13. Okay, so We have another part This is some sort of a cam surface or a locking surface and It's got another taper pin in it It fits nicely So again, we're going to first give it a few experimental taps to see if it'll come out Maybe it's been heated up enough Probably not so I'm just going to go ahead and heat that up in the air Probably up to a pretty good temperature so now I'm going to put it back on my Jig and give it a couple more taps. It's just being a little bit of a pain. So I just need to give it a couple more bangs and Sorry about the sound I've actually forgot to put my Put my microphone back on my shirt. So it's back on now. So here we go Okay, this is really proving to be a pain But I think it is actually coming out. Okay, so the danger at the really big danger with banging taper pins with With punches that are too small is that you'll just end up deforming the end of the taper pin And I think that's probably what's happening right now Which is kind of unfortunate because it means that the taper pin is just getting tighter Yeah, so I'm just going to leave that as it is for now Because I do not have a punch that is the correct size. I can go find a punch But unfortunately, that's where we're going to have to leave it Okay, so it's been just about 40 minutes. This has been a rather a longer slightly longer video than the other ones So that's where we are right now When we next come back, maybe I'll have a punch that is of the correct size To properly punch out this taper pin. So until then bye. Okay, so This is Rob again Let's take a look at this Taper pin. It's been by now extremely abused So this is the problem with taper pins is that when they're in they're in and Unless you're lucky, I think there's very little chance of getting them out In this particular case banging on it just did not work Heating it up did not work I even took a small end mill and milled into the pin At which point the mill broke in the hole So at that point You may as well just give up There is absolutely no way of getting this taper pin out The only the only way That this taper pin could possibly be taken out at this point is Probably to grind the the large end flat and then use I Suppose an end mill to just mill out To just mill through you cannot use a drill because a drill has a point on it and that point will wobble around So you must use a flat end mill in order to mill this out The mill is probably going to have to be larger than the diameter of the hole Because if you try to put this Into a vise Perfectly straight up and down. Well, you're never going to get it straight up and down perfectly The whole the whole way that they put this on was they put the part on they put they put the part on the axle It didn't have any holes in it And then they just held the part on the axle using some force and then they just drilled straight through So there's no way that we're ever going to replicate The exact angle that this was that this was drilled at so the only alternative really is To put this into a drill press or a mill get an end mill and Just mill the sucker out That might not even work because I broke off the previous smaller end mill in the pin So it's embedded in there. So now I'm going to have an end mill that's trying to mill out another end mill This will probably just end in tears, but I guess we'll find out in the next episode So that was just an epilogue. Bye