Lorch BVIR Lathe - Intro and Assessment

Рет қаралды 4,789

Күн бұрын

The Lorch plain turning lathe is an antique clock and instrument makers lathe. It was manufactured between 1885 and the 1950s in Germany by Lorch, Schmidt & Co., later know simply as Lorch.
Join me as I talk about the challenge of restoring one of these lathes, and the path I ended up following on eBay.
00:00 Intro
00:12 The Search
02:07 The Reveal
03:44 The Wiring
05:43 The Belt
06:59 The Cross Slide
08:05 The Summary
Edited with:
Davinci Resolve 18.6.6
Audacity 3.3.3
Music:
Easy Lemon by Kevin MacLeod is licensed under a Creative Commons Attribution license (creativecommons.org/licenses/...)
Source: incompetech.com/music/royalty...
Artist: incompetech.com/

Пікірлер: 46

@andrewmorris743 2 ай бұрын

Very nice lathe. Please can I ask you to look at the electrics. Not sure about the earthing arrangement. It seems to go through the contactor. and not connected to the starter case, lathe frame or motor directly. In fact the earth connection to the motor looks switched in the starter switch is a big no no! I would suggest ditching that starter and going for a more modern No Volt release model for safety.

@ADBBuild 2 ай бұрын

That looks like 3-phase wiring, not a ground. Looks like there is no ground at all, or at least it isn't visible.

@andrewmorris743 2 ай бұрын

It looked like normal 13A socket on the wall. At least it had a plug in RCD in the circuit

@semifavorableuncircle6952 2 ай бұрын

@@ADBBuild The switch is intended for 3-phase, but its used for single phase and as it is wired it switches ground as well. Which it really shouldnt.

@AdventureswithaVerySmallLathe 2 ай бұрын

Thanks for raising this, Andrew! Now that you've pointed this out, you're obviously correct. I just trusted that it was wired correctly, but it's clear that there isn't proper earthing there at all.

@DemolitionManDemolishes 2 ай бұрын

Now you'll have to rename your channel into "Adventures with a Very Moderately-Sized Lathe" 😁

@AdventureswithaVerySmallLathe 2 ай бұрын

The very small lathe is still with me, and as long as it's there the channel name will stay the same. I'm just too attached to it.

@lv_woodturner3899 Ай бұрын

Very nice old lathe. Very good condition for its age. Interesting that the lathe has a line shaft which is driven by the motor. Looks like someone added the motor a long time ago. I have a Southbend Heavy 10. The flat belt was in bad shape lots of embedded metal particles from decades of use. I replaced with a modern flat belt made with rubber core and nylon outer. I purchased this with a scarf joint and the relevant glues for rubber and nylon. It is very quiet. Your laced belt will have a click every time the lacing hits the cone pulley. I live in eastern PA, USA. There is a flat belt company about 40mins away. They are in Amish country hence a lot of old farm machines still being used needing belting. The company cuts the belting to required length and calculates the scarf position so the glued up belt is the final desired length. Dave.

@Rustinox 2 ай бұрын

That's a very nice toy to play with. Have fun with it.

@shootgp 2 ай бұрын

Congratulations on your new machine. Regarding flat belts, the KZfaq channel 'Winky's Workshop' has a bit of know-how regarding replacements and splicing. Good Luck

@AdventureswithaVerySmallLathe 2 ай бұрын

Thanks for the tip, I'll check it out.

@jrkorman 2 ай бұрын

Was looking through comments to see if anyone recommended Mark's channel. Well worth your time.

@renevile 2 ай бұрын

as an electrician i highly recomend that you connect the two Yellow/Green earth wires directly together rather than through the switch.

@AdventureswithaVerySmallLathe 2 ай бұрын

Thanks for spotting this! Andrew Morris (@andrewmorris743) went into this in an earlier comment, and I think you've both spotted an important issue I need to fix. It looks like the lathe and stand have no earth connection at all.

@624Dudley 2 ай бұрын

This is going to be marvelous 👍

@windsoruk 2 ай бұрын

If you're stuck, I found that a Smart&Brown Model-L cross slide will fit a model-A bed profile - I use one on my own Model A (AVI-RG).

@GerbenPolder456 2 ай бұрын

A very nice machine indeed. Thank you for sharing. As I have shown (I hope) my Lorch Schmitt & co model A lathe is driven by two flat belts. But they both needed replacement. One was leather. Cracked, dried out and unsalvageable. The other was more a canvas/rubber belt that by now had started to delaminate. Luckily, I have two nephews who are orthopedic shoe makers and masters at (thick) leather working, so I could quite easily have new belts made. The thing I did learn is that new leather stretches. Depending on the thickness and with, this can be a problem if you don’t have the adjustment means. Especially with a dual belt system as I have it as both will be different length and width, and thus have different stretch factors.

@AdventureswithaVerySmallLathe 2 ай бұрын

Hello again Gerben! Yep, I remember from the first batch of photos you sent me late last year. The two flat belts control the ratio, then there are 3 V-belts to drive the spindle. Emma has been talking about using Biothane, a rubber coated webbing belt which doesn't stretch, and has long working life. I'm going to give it a try.

@GerbenPolder456 2 ай бұрын

@@AdventureswithaVerySmallLathe hi again, and thanks for the answer. Indeed, I still keep the two original belts, though I guess they in turn are already replacements. I hear about this Emma, and would love to get in contact. Does she (presuming by the name) have a site or channel?

@AdventureswithaVerySmallLathe 2 ай бұрын

Check out "Emmas Spareroom Machine Shop". She has a great community there, and has a live stream chat every Wednesday morning, European time.

@Soren_Marodoren 2 ай бұрын

Thanks for sharing.

@georgeclements2742 2 ай бұрын

A lovely sturdy machine. Best wishes.

@CraigLYoung 2 ай бұрын

Thanks for sharing 👍

@criggie 2 ай бұрын

could you undo the belt lacing on one side, cut out a short piece, and re-crimp the metal lacing on? That should help with the tension until its replaced.

@AdventureswithaVerySmallLathe 2 ай бұрын

The tension seems to vary over time, perhaps due to changes in humidity? It's not completely clear. The belt is definitely less loose now than it was at New Year. Yes, it took me this long to get the video done.

@SuperGrover 2 ай бұрын

It's pretty easy to use leather belriing and make it endless using a scarf joint. I did something similar on a vintage lathe including tensioning. It's on my craooy channel if you want to have a look. Scarf joint is easy and strong.

@SuperGrover 2 ай бұрын

*crappy 😊

@AdventureswithaVerySmallLathe 2 ай бұрын

Thanks, I'll check it out!

@jeffarmstrong1308 2 ай бұрын

A nice win even if it was not your original plan.

@jamesriordan3494 2 ай бұрын

🙌

@phoenixsilklines Ай бұрын

Lathes uk does modern flat belts. Tony Griffiths is the contact.

@mealex303 2 ай бұрын

try the 😊interlocking belts that can be made any length

@theflyingfool 2 ай бұрын

"Adventures with a pretty beefy lathe"

@trollforge 2 ай бұрын

I just emailed you some info on flat belts.

@AdventureswithaVerySmallLathe 2 ай бұрын

Thanks so much! That's a bunch of really useful resources for my learning process. I don't think I'll be able to use a permanently laced belt, as I need to be able to remove it often, but it's worth looking into.

@backi480 2 ай бұрын

Nice but why not sharing those Information for all.. the old Knowledge dies with it's old User.. is that the Goal ?

@trollforge 2 ай бұрын

@@backi480 if you would like copies, just ask politely and leave your email...

@AdventureswithaVerySmallLathe 2 ай бұрын

@@backi480 KZfaq blocks comments with links in, so there isn't really a way to share these photos directly here. With trollforge's permission I'll cover them in the next video.

@Jped277 2 ай бұрын

It has no leadscrew or saddle crank? How do you turn parts? Do you have to use the top slide for turning?

@AdventureswithaVerySmallLathe 2 ай бұрын

The top slide is quite a bit longer than on an engine lathe, and it's the only way to move the tool parallel to the axis for turning.

@Jped277 2 ай бұрын

@@AdventureswithaVerySmallLathe can I ask how much these old lathes are worth? I paid 600 for a new vevor mini lathe but I dream of buying an older better built lathe to restore

@AdventureswithaVerySmallLathe 2 ай бұрын

@@Jped277 How much they are really worth is a hard question to answer. As I discuss in the video, the prices are affected by how difficult it is to ship such a heavy machine, and how far buyers are willing to travel to collect it. The same machine might sell for less if it is in a remote location. I paid £250, which is a great price. I think the price was low because not many people have the space for a machine this big, and those who do may need something with more features, such as a leadscrew and thread cutting. If I had to pay to have this shipped commercially, that would likely have more than doubled the cost.

@Jped277 2 ай бұрын

@@AdventureswithaVerySmallLathe wow that is a great price. 250 metric is like 275 sae Dollars. lol. Have been scanning the Facebook marketplaces in my area I'm sure there's a later around here somewhere, I just need to find the guy that has it for sale.

@wibblywobblyidiotvision 2 ай бұрын

That's a cracking machine. I assume you got the tailstock with it? The countershaft setup looks a bit janky, the "normal" setup for this is to have the whole countershaft / motor setup pivoting in order to tension the flat belt automatically. You're right that the high speed setup is very slack. Far too slack. Modern replacements for flat belts exist, and can be made to measure. A common quick fix is to use an automotive serpentine belt flipped outside-in (requires pulling the spindle to fit). Any kind of splittable belt as you have at the moment is noisy, the best is a belt that's made and bonded in place. I have a friend who bought up a load of Habasit belting (this is a proper rolls royce solution) along with the machine that does the bonding, he can split to width and lend the machine. I need to replace the belt on my schaublin at some point in the nearish future, if I do so I can get a belt made up for you at the same time. Again, this is going to require pulling the spindle on the lathe to fit.

@AdventureswithaVerySmallLathe 2 ай бұрын

Yep, tailstock, two crosslides, 3 chucks, a faceplate, and a decent set of spindle collets. It's a well equipped machine, and all will be revealed in future videos.