@@aurigo_tech I suggest making a double stacked magazine like modern firearms, I saw one that holds 7 bolts. And maybe put the front end of your iron sight at the bow itself, like most firearms today.
@@foogoose1439 Yeah I have already some ideas for improvement, some of which concern also what you wrote. I didn't really thought much about the iron sights in this one and just improvised. That will not happen for the next model.
Wow!!never i see a great job like this..perfect mecanical part all costruction have ispired mi..and really great craftman!how many layer of steel have yused for limb,and thikness, thanks a lot
Not quite sure what you mean - the goove in the middle where the bolts lay in? I used homemade bolts here which only had 2 vanes (or none) instead of the usual 3, so I just set the middle piece of the stock a bit lower to secure them a bit to the left and right. This can be seen at 3:21. The wood piece itself is 10 mm wide there. In the newer coilspring crossbow I have an actual deeper groove cut out to fit the vertical of 3 vanes of a standard bolt and that is 15 mm or so deep and 2 or 3 wide.
Your crossbow rocks. You just add a picatinny rail on top and a good sight, and add a couple more of layers to that limbs. Maybe you could try fiberglass to keep it light? your lever system is clever and your building quality is awesome. If some Scandinavian furniture maker builds a crossbow, it will be like yours. Thanks for taking the time to upload this.
Thanks! Jep, the lever system works pretty well, apart from that I will tackle the problems this had in future iterations of course. If it wasn't for that pesky day job that eats up all the hours..
this is a super sick video, i found the link for it on reddit, I saw you were disappointed in the power, of the top of my mind, you could take off the string protection, get ball bearing pulleys, and make the limbs lighter. The video is amazingly shot as well, I loved the entire thing
Thanks! I think the main issue is weight here, so replacing the steel with fiberglass limbs would probably improve the performance the most. Check out my newer coilspring-based crossbow as well.
I think serving string is better for making crossbow string, because they are really strong and light, and you could make lighter arrows, becaus 30m/s is very slow, the weapon deserves at least 80m/s
Yeah I already am working on the next version of the crossbow. I think the main issue for speed is the bowlimbs themselfs. I improved them regarding their material distribution (compared to the first model) but steel remains heavy and has to accelerate itself, which makes it slow. Springsteel bows can take enormous drawweights and are nearly indestructable, but quite slow actually. In the next version I will make this better. And the string: yeah sure, its not optimal, but the nylon rope I used only broke once due to my abuse as seen in the outtakes but not since. Also it itself weighs only some grams - insignificant next to the bowlimbs. I tried out various weights for bolts and sure the lighter ones are faster, but their energy drops as well much faster. So for the most energy I found the massive steel bolt actually with 75 g or whatever it was.
@@aurigo_tech I think serving string is a great material for making the bow string, it does not get longer when stretched, and it is very strong and light.but you need so do some serving. one of the reason that your crossbow does not get high velocity is because your serving is in steel wire, it is too heavy so you loose lots of momentum. but you need to make sure that there is no sharp edge making contact with the string to prevent it from cutting
Yes! I am working on a next crossbow for a while already, but have run into some problems. However, there will definitely be more DIY crossbow content :)
5 ปีที่แล้ว +1
Like. Good cocking mechanics. but the arrows are too short. Magazine dosing could be automatic.
Thanks a lot, Lacás! I appreciate your opinion a lot - knowing what great products you are building. Yeah, as I have said I am not entirely satisfied with the magazine, and also the bolts are no perfect. Glad you like it though!
5 ปีที่แล้ว
@@aurigo_tech Check out my new video. I also made fast loaders so that it wouldn't take long to load the magazine. th-cam.com/video/BSzCO-Y4kd8/w-d-xo.html
This is a beautiful crossbow! I quite like the shiny appearance of spring steel. However, I notice several characteristics of this crossbow that appear to be holding it back performance-wise. First, there is no width-tapering of the strips. If you used a single thicker strip of flat spring steel (perhaps up to 6 mm thick) and cut a triangular taper, then it would better utilize the strength of the material while reducing limb mass, especially toward the limb tips. A width-tapered limb is always more efficient than a thickness-tapered limb and will have a faster cast. Second, you could incorporate a stiff middle section, made out of a narrow and deep I-beam, perhaps 500 mm or so in length. Then fasten a single triangular flat limb to each end of the I-beam. What this does is increase the ratio of string travel to limb travel, improving efficiency. Then, to gain even more performance, you could fasten the limbs at an angle to the I-beam by using triangular wedges. This increases the initial angle between the bowstring and limbs, which allows the limbs to store more strain energy throughout the draw. The maximum efficiency is obtained when the string is perpendicular to the imaginary line from innermost point of the limb to the limb tip. Finally, your pulley brackets and bolts on the limb tips are way bigger than they need to be, and they add a lot of unnecessary mass where it hurts the most. Good luck, and I look forward to seeing your next crossbow!
Good points! In the time since this video I have thought about a lot of those issues as well. However, I will probably not make another (steel)bow-crossbow - for speed it really is not the right material. I am working on more stuff already though and try out more things.
Awesome cocking mechanism and magazine! Hope you patented it, because people are going to want this thing!
Glad you like it! I will certainly develop it further some time, and we'll see what happens when people still like it :)
That looked straight out of Metro Exodua, and I love it.
Thanks man! I will make more like this, except better, of course :)
@@aurigo_tech I suggest making a double stacked magazine like modern firearms, I saw one that holds 7 bolts. And maybe put the front end of your iron sight at the bow itself, like most firearms today.
@@foogoose1439 Yeah I have already some ideas for improvement, some of which concern also what you wrote. I didn't really thought much about the iron sights in this one and just improvised. That will not happen for the next model.
@@aurigo_tech Understandable. I'll be waiting for your amazing work!
Wow!!never i see a great job like this..perfect mecanical part all costruction have ispired mi..and really great craftman!how many layer of steel have yused for limb,and thikness, thanks a lot
What type of metal is used in the crossbow front wing?
Nice weapon sir. You're amazing handmade
Also - whistling bolts? Awesome!
Good job, I have question. What's the thickness of the groove flight in mm please?
Not quite sure what you mean - the goove in the middle where the bolts lay in?
I used homemade bolts here which only had 2 vanes (or none) instead of the usual 3, so I just set the middle piece
of the stock a bit lower to secure them a bit to the left and right. This can be seen at 3:21.
The wood piece itself is 10 mm wide there.
In the newer coilspring crossbow I have an actual deeper groove cut out to fit the vertical of 3 vanes
of a standard bolt and that is 15 mm or so deep and 2 or 3 wide.
Are you going to post plans somewhere? This whole setup is really smart. I'd love to build my own!
Have a look on my website:
www.zuender.org > work > DIY
Your crossbow rocks. You just add a picatinny rail on top and a good sight, and add a couple more of layers to that limbs. Maybe you could try fiberglass to keep it light? your lever system is clever and your building quality is awesome. If some Scandinavian furniture maker builds a crossbow, it will be like yours. Thanks for taking the time to upload this.
Thanks! Jep, the lever system works pretty well, apart from that I will tackle the problems this had in future iterations of course. If it wasn't for that pesky day job that eats up all the hours..
this is a super sick video, i found the link for it on reddit, I saw you were disappointed in the power, of the top of my mind, you could take off the string protection, get ball bearing pulleys, and make the limbs lighter. The video is amazingly shot as well, I loved the entire thing
Thanks! I think the main issue is weight here, so replacing the steel with fiberglass limbs would probably improve the performance the most. Check out my newer coilspring-based crossbow as well.
Here from r/metalworking. That's very nice! I like it! Good job!
Thanks! Yeah, great subreddit, glad I posted it there.
I think serving string is better for making crossbow string, because they are really strong and light, and you could make lighter arrows, becaus 30m/s is very slow, the weapon deserves at least 80m/s
Yeah I already am working on the next version of the crossbow. I think the main issue for speed is the bowlimbs themselfs. I improved them regarding their material distribution (compared to the first model) but steel remains heavy and has to accelerate itself, which makes it slow. Springsteel bows can take enormous drawweights and are nearly indestructable,
but quite slow actually. In the next version I will make this better.
And the string: yeah sure, its not optimal, but the nylon rope I used only broke once due to my abuse as seen in the outtakes but not since. Also it itself weighs only some grams - insignificant next to the bowlimbs.
I tried out various weights for bolts and sure the lighter ones are faster, but their energy drops as well much faster. So for the most energy I found the massive steel bolt actually with 75 g or whatever it was.
@@aurigo_tech I think serving string is a great material for making the bow string, it does not get longer when stretched, and it is very strong and light.but you need so do some serving. one of the reason that your crossbow does not get high velocity is because your serving is in steel wire, it is too heavy so you loose lots of momentum. but you need to make sure that there is no sharp edge making contact with the string to prevent it from cutting
are you ever going to improve on it again ?
Yes! I am working on a next crossbow for a while already, but have run into some problems. However, there will definitely be more DIY crossbow content :)
Like.
Good cocking mechanics. but the arrows are too short. Magazine dosing could be automatic.
Thanks a lot, Lacás! I appreciate your opinion a lot - knowing what great products you are building. Yeah, as I have said I am not entirely satisfied with the magazine, and also the bolts are no perfect. Glad you like it though!
@@aurigo_tech Check out my new video. I also made fast loaders so that it wouldn't take long to load the magazine.
th-cam.com/video/BSzCO-Y4kd8/w-d-xo.html
That's a badass crossbow I want one buddy
Nice crossbow more beautiful than my builds haha.
This is a beautiful crossbow! I quite like the shiny appearance of spring steel. However, I notice several characteristics of this crossbow that appear to be holding it back performance-wise. First, there is no width-tapering of the strips. If you used a single thicker strip of flat spring steel (perhaps up to 6 mm thick) and cut a triangular taper, then it would better utilize the strength of the material while reducing limb mass, especially toward the limb tips. A width-tapered limb is always more efficient than a thickness-tapered limb and will have a faster cast. Second, you could incorporate a stiff middle section, made out of a narrow and deep I-beam, perhaps 500 mm or so in length. Then fasten a single triangular flat limb to each end of the I-beam. What this does is increase the ratio of string travel to limb travel, improving efficiency. Then, to gain even more performance, you could fasten the limbs at an angle to the I-beam by using triangular wedges. This increases the initial angle between the bowstring and limbs, which allows the limbs to store more strain energy throughout the draw. The maximum efficiency is obtained when the string is perpendicular to the imaginary line from innermost point of the limb to the limb tip. Finally, your pulley brackets and bolts on the limb tips are way bigger than they need to be, and they add a lot of unnecessary mass where it hurts the most. Good luck, and I look forward to seeing your next crossbow!
Good points! In the time since this video I have thought about a lot of those issues as well. However, I will probably not make another (steel)bow-crossbow - for speed it really is not the right material. I am working on more stuff already though and try out more things.
That’s badass 😎👍
Un video paso a paso de la fabtcacion!
if this was available commercially i would have bought it no questions
I will make more crossbow content, quite soon actually. And eventually it might lead to a buyable produkt :)
Safety glasses my friend.