sainte Report post Posted June 17, 2020 (edited) Hello, I am a amateur worker for leather. I have restored a couple of sewing machines and recently I have started to restore an apparently very old Fortuna leather skyving. I am having some difficulty knowing how the lower drag mechanism works, because I have received the machine disassembled. I could upload some photos and I would appreciate it if you could help me. Edited June 17, 2020 by Northmount Removed HTML encoding so text fits the window Quote Share this post Link to post Share on other sites
RockyAussie Report post Posted June 17, 2020 28 minutes ago, sainte said: Hello, I am a amateur worker for leather. I have restored a couple of sewing machines and recently I have started to restore an apparently very old Fortuna leather skyving. I am having some difficulty knowing how the lower drag mechanism works, because I have received the machine disassembled. I could upload some photos and I would appreciate it if you could help me. Thanks Post some pics and we will try and help. You can see mine in use some on you tube links. Quote Share this post Link to post Share on other sites
Northmount Report post Posted June 17, 2020 @sainte Welcome to the forum. Please avoid using HTML encoding in your posts. Its format doesn't fit the window. If you are using a translator application to translate to English, copy and paste the text as plain text. Also moved your post to "leather Sewing Machines" You will find more help and answers here. Tom Edit - actually should be in Leather Machinery - so moved again. Might get it right someday! Quote Share this post Link to post Share on other sites
Wizcrafts Report post Posted June 17, 2020 Here are some YouTube videos about setting up a Fortuna ES-50 skiver. It applies to all similar models and brands. Here is a video about setting up a Fortuna skiver. (could not be embedded here) Part 2 of above video Part 3 showing the Fortuna skiver in use. Quote Share this post Link to post Share on other sites
keithski122 Report post Posted June 17, 2020 I found the best change I've done to my skiver is to replace the stone wheel with a plastic/nylon one. I had problems with waste material being drawn back up over the wheel, change of wheel resolved this issue. Quote Share this post Link to post Share on other sites
DanishMan Report post Posted June 18, 2020 Hi Sainte Please upload some photos. I am working on an old Fortuna clone at the moment, and I can probably help you. Brgds DanishMan Quote Share this post Link to post Share on other sites
sainte Report post Posted June 19, 2020 RockyAussie Thanks for your quick response. I was watching yours interesting videos on Youtube. I hope someday to adapt an skiver roller foot like yours. Tom Thanks for your suggestions. I apologize, I understand what you are saying. Wizcrafts Thanks, very interesting videos. I have seen those videos. I would be interested to see what no video shows, and it is the skyving below parts machine ! keithski122 Thank you for the suggestion regarding the change of Stone wheel with a plastic wheel. DanishMan Thanks for your help. I hope to see the video soon. Dear, I attach an image where I show the crank that apparently controls the tension of the strap. I would like to be able to observe its journey through the entire bottom of the machine. I am in the midst of restoration and I had to assemble these parts to be able to show the parts with the pulleys in question. I hope soon can show my progress. Thank you. Quote Share this post Link to post Share on other sites
RockyAussie Report post Posted June 22, 2020 Hi @sainte I am afraid that my old skiving machine appears to be a lot younger than this one of yours. I have done a search and found a little on this type of Fortuna and found this blog that you may find interesting. The last picture shows some of the belt track from underneath. http://bdupres.blogspot.com/2014/06/skiving-skiver.html I hope that this is of some help and you go on to get it all running. Please share a few pics as you go. Brian Quote Share this post Link to post Share on other sites
sainte Report post Posted June 22, 2020 Dear, I was working on my restoration. Fortunately I have been able to find a plate where the driver model appears: FORTUNA type K. I have also been able to assemble the outer part. I attach an image. I will continue with my work and I will show you my progress. Brds Quote Share this post Link to post Share on other sites
Scoutmom103 Report post Posted June 22, 2020 Thank you for sharing the progress pictures. Quote Share this post Link to post Share on other sites
RockyAussie Report post Posted June 23, 2020 Nice picture there. I had a look for a manual but as you have no doubt found not so easy. I hope it comes together well and I look forward and thank you for sharing your progress. Quote Share this post Link to post Share on other sites
sainte Report post Posted June 23, 2020 Dear, my skyver had accumulated layers of paint . What I am doing is completely staining to repaint with polyurethane lacquer. I have previously completely disassembled the entire mechanism! Quote Share this post Link to post Share on other sites
RockyAussie Report post Posted June 23, 2020 @sainte that sure looks like a lot of work . Not that it matters at this stage but I will recommend keeping in mind that it will be a good idea to split the bell drive separately from the feed stone drive. The bell runs at a fast speed always while the feed can go slow or fast then. Many years ago I had one like yours but they did not have these nice little servo motors around back then so I got rid of it. Quote Share this post Link to post Share on other sites
sainte Report post Posted June 24, 2020 Dear Rocky Aussie, I am an apprentice working with leather. But I was thinking exactly the same thing about dividing the feed and thus being able to control both speeds. Thank you for your help. Brds Quote Share this post Link to post Share on other sites
sainte Report post Posted June 24, 2020 I have completely disassembled the skyver. Now, after sorting and inspecting each of the pieces, I will begin preparing them for the painting stage. If someone were to be interested in some aspects related to the processes used for restoration, I can detail them. For example how I have managed to improve the appearance of the damaged screw heads. Thank you. Brds PS: I attach an image with the total disassembly. Quote Share this post Link to post Share on other sites
Scoutmom103 Report post Posted June 24, 2020 I would love to see how you are restoring and putting it back together. Were you able to find an old service manual, or? Since you received the machine disassembled. Quote Share this post Link to post Share on other sites
sainte Report post Posted June 24, 2020 Scoutmom103: I am going to try to show as many details of the restoration, emphasizing putting everything back together and without any parts :-) Unfortunately, and probably because it is a very old model, I could not find the service manual. Quote Share this post Link to post Share on other sites
DanishMan Report post Posted June 25, 2020 Hi Sainte Sorry for my late response. The mechanism on your machine - to engage the grinding wheel - is different from the skiving machines, that I have had. So I am unable to help you. Kind regards Danishman Quote Share this post Link to post Share on other sites
DanishMan Report post Posted June 25, 2020 By the way. I have been using the user manual from a Sunstar Skiving Machine, which is a Fortuna clone (and still in production). http://www.sunstarmexico.com/wp-content/uploads/2018/02/Manual-KM-76_MME.pdf Quote Share this post Link to post Share on other sites
sainte Report post Posted June 25, 2020 DanishMan: My skyver is either a very old model or very very rare. I could not find another like it! Thanks for your help. Quote Share this post Link to post Share on other sites
sainte Report post Posted June 25, 2020 Please, can someone tell me what is the speed (rpm) of the bell blade and on the other hand the speed (rpm) of the drive mechanism of your skyver?. Thank you Quote Share this post Link to post Share on other sites
RockyAussie Report post Posted June 26, 2020 2 hours ago, sainte said: Please, can someone tell me what is the speed (rpm) of the bell blade and on the other hand the speed (rpm) of the drive mechanism of your skyver?. Thank you The bell speed on mine is able to be changed at the pulleys to run faster or slower but as a guide line a normal sewing machine motor will run it and fast is best normally. The manual above that @DanishMan should give you some more clues on that. As far as the feed speed goes.... although it can be set at a constant speed it is usually used like a sewing machine meaning the more foot pressure the faster it goes. When you are doing long strips you want the feed fast and when you are doing little curly stuff you want from 0 to fairly slow. I have seen a few people use 2 servo motors to do it but the bell could be run on a normal set speed motor. Note: the worst thing on these old skivers is if you have too much play up and down on the shaft that drives the bell. If it moves that way you may be wasting your time. Quote Share this post Link to post Share on other sites
sainte Report post Posted June 26, 2020 (edited) RockyAussie: Thanks for your help once again. Yes, I am seriously considering your recommendation about use a servo motor for feed speed. Referring to the up and down play on the bell axis, I already knew that this problem could be, it was one of the first things that I tried to discard before starting the restoration: I think that although my machine is very old and maybe it has been a little battered before, it has had little use! and little wear on the shaft, we will see ... Thank you. Edited June 26, 2020 by sainte Quote Share this post Link to post Share on other sites
RockyAussie Report post Posted June 26, 2020 Your most welcome and I hope that it all goes well. I will attach a couple of pdf's of some manuals that could help a little in some places. I see that this file may be too large by itself so I will give it a try and see how that 1 goes first. Fortuna 50 p ag.pdf Quote Share this post Link to post Share on other sites
RockyAussie Report post Posted June 26, 2020 another- dcs-s3.pdf Quote Share this post Link to post Share on other sites
