Making a Mini Compound Crossbow with Springs

I've always wanted to make a mini crossbow using rotating cams. In this model, I used 2 springs as a drive.
/ mn.projects
/ maciej-nowak-962547184

[@Aleeknives]

Wicked little setup! I love watching all of the processes also! Thanks for taking the time to show the whole process.

[@danebeck7900]

Awesome project. Something to think about regarding the physics of your crossbow: The energy stored in the springs doesn't just accelerate the arrow... But also the metal wheel rotation. If you make the wheels as light as possible, more energy will be used to accelerate the arrow and you'll get more velocity and range.

[@lucioruffo9470]

u work in such a clean and professional way i like it!

[@johnedwardculp6621]

You said compound and cam. Beautiful work but I see simple pulleys without making the word compound applicable. Now you're able to build the next step which could if a truly compound may also require a leverage assist incorporated to set. Let the engineer in your heart see what anchored cords in variable radius cam pulleys might drive for wilderness survival. Something for a balanced diet. Also consider a compact tool set system of making projectiles from wilderness available materials as well as a service plan that doesn't likely require ordering more parts from distant sources. You're an inspiration. Clean simple work sets a precedent to carry the task further. Thanks for interacting. There's promise in the wind. Relax and enjoy.

[@arshadedit821]

Yah aapka achcha laga bahut

[@richardnash6009]

Another fantastic project very clever and well made. Thank you 👏👏👏👏

[@harizismail314]

We bought thisd for our son. The first trip he came up to hunt with me, he had a shot at a great buck and wacked him dead to rights at 50 yards. Dead on, literally.

[@Inventive101]

Super project, super nice and very nicely worked and clean, I like what you do friends, keep it up

[@anthonystrunk5360]

I like your lathe! Good job!

[@jeremywright7620]

That was so compact great design

[@starboy-nb4wq]

I like watching these kind of videos they take your mind off of things

[@charanacharya8490]

Fantastic project 👍👍👍

[@MrPanchoak]

Nice idea, but you ought to increase the efficiency and the speed by running the string the other way. Giving it a longer "stroke" should almost double the power.

[@youssefberady]

Small & efficient, a 007 gadget.

[@raphlvlogs271]

a work of art.

[@adriancoetzee65]

Cool!!!! Years ago I started making a full size crossbow using a leaf spring from a pickup.

[@Tetratronic]

JC Denton: *I N V E S T* I knew you'd make one eventually. Looks great.

[@RSpudieD]

This is pretty cool! Nice job!

[@dcsmith5839]

Well done!

[@Pd-17]

Very nicely made.

[@MRENGINEERPro]

Wow. Really cool

[@hippopole9657]

Super Idea , design and development of a thing.

[@paulwomack5866]

Nicely made, but you have "wheels" not "cams". The whole point of the cams on a compound is that they interact with the linearly increasing tension in the springs such that the draw weight is more constant, possibly dropping off at the hold point (which doesn't matter for a cross bow).

[@sharaddatar2472]

bo nsai pllant

[@marshinator630]

I subscribed as soon as i seen his draw full of springs

[@user-lw8jk6nv7l]

Say goodbye to finger hair with the new Miniature Spring Crossbow! Jk, I absolutely love this design. It's easily in the top 3 best ones you've made so far

[@kennethyoung141]

What can we use for cams?

[@devendersinghattri4654]

Superb!

[@prakashnatarasan669]

Super good idea

[@bmxrider71]

LOVE this. This would be a fun little toy....lol

[@jibonbangladesh8517]

kzbin.info/www/bejne/qZWUkqKbf5KsrZY

[@TechsScience]

Nice one I should try making it

[@luger9857]

Really cool!! I think if you made the cams lighter the bolt would shoot quite a bit faster

[@shawindustries8269]

Right up my street this is cool

[@Inventive101]

Well done, good idea!

[@pauloinventostube7533]

Ficou dos bons 👏👍

[@ProTekGuy]

looks cool dude! 😎 keep it up! 👍

[@ksOO7]

6:27 Most satisfying part😌😌😌😌

[@AkleshKumar-pg7im]

balvlr

[@yannickbienaime1778]

Merci c'est super génial. ❤

[@Kady3DPrinting]

Amazing

[@jerryjohnsonii4181]

Awesome !!!!!!!!!!!!!!

[@vitthalkamble7725]

Very nice 👌

[@slavas8377]

Я, прекрасно понимаю человека, который своими руками это все изваял! Огромное ему спасибо! Но! Никакой практической цели, кроме развлечения детей. И это! Уже очень хорошо! Надеюсь, что он конструировал вместе со своими детьми!

[@lilbilly8188]

What can this guy not do. He makes knives, vises, crossbows, he knows how to machine on a lathe, use cad, and weld. The most quality content on yt to be completely honest. I got a question. Do you have a degree in something if so what exactly and how do I get to where you are?

[@DEFCON5307]

Hi I know it's been over a year but the degree/job you're looking for might be "mechanical engineering"

[@ibrahimtrishuribrahimtrish7593]

it's amazing

[@zameerdastageer185]

Chat to 43

[@brainlesspiggy7212]

Thank you for making such a detailed verison, I'm gonna make a big one with stronger springs

[@mohdnadir3056]

Mujhe yeh dekh kar ek naya idea aaya bahut dhasu idea hai

[@johncreative5852]

Wonderful

[@lintaseks650]

Good job

[@azatecas]

I love your project! The only feedback I have is to showcase the end product for longer time

[@JontheRippa]

Wow Verry Good 💪👍👌👏👏👏

[@rafikshaikh7530]

Very nice 👍👍

[@jobmariano348]

Cool. Now what i need is the expensive tools

[@lovekushkumar8856]

I MB type motion

[@LhajBELAAIDWorkshop]

Amazing project bro 👌👌👌🙏🙏

[@officialluckysinghn.puriya8924]

Very good technical

[@Captainziadkhan]

At last found a channel after a long gap of turkish ERTHUGUL GHAZI seasons!!!!

[@arthurgarcia4389]

I wish i had all that machinery

[@ravanabrahmarakshas4263]

clever design.

[@charliepace8051]

Cool and thanks.

[@user-no3sm9pf8o]

Very good

[@aps8446]

Having so many tools, machinery and resources, it sure is awesome. Edit: adding a metal rail, a longer area of acceleration and vanes to the bolts, will pretty much improve this toy

[@vikrampawar6024]

Veri good bahut jada maend he aage jaoge

[@daedalus372]

So cool... now you just need to find a tiny Joerg Sprave!

[@SethKotta]

So he can show us its features?

[@n1x0id]

Excellent. Tell me what kind of glue do you use?

[@MetalDIY]

I'm also very interested!

[@buddyguy4723]

dang thats cute

[@theblaster5188]

Me encanto 🧠💥

[@amazingatria9455]

AAYA AAYA TUFAAN... BHAAGA BHAAGA SHAITAAN

[@bryanrandom6382]

Coo, that would be fun to design and 3d print tho!

[@danl.4743]

Cute assassin weapon. Does it work on hoomans? :)

[@BAGHELFAMILY]

Nice

[@26priyansubiswas13]

Hardworking

[@MCsCreations]

Fantastic work, dude! Nicely done! 😃 What about a bigger one? Like real size. 😬 Stay safe there with your family! 🖖😊

[@jameswyatt1304]

The contradiction in "What about a bigger one? ..." vs "Stay safe..." is interesting.

[@MCsCreations]

@@jameswyatt1304 I wished him to stay safe... Not his enemies. 😊

[@Naren.Anit07]

Ok..But must need to provide one bullet guide hole. After some using the nylon rope will having plasticity property.so it's chance to less spring tension.

[@djones1379cleo]

Sweet

[@Garlic_Doggo]

What about one with some locking mechanism that locks the arrow/bolt in place so it doesn't fall off and the mechanism releases it's locks on trigger pull

[@anthonyfeatherstone7696]

I would love to see this as a giant ballista!

[@samuorai6666]

Very nice...✌🙏✌🙏✌🙏

[@parapicktog7734]

All that equipment, and you don't have a router to cut the slots with???

[@mericawhips5697]

Make a giant one too

[@ibrahimgoma5462]

nice

[@yusufshaikh6288]

Super 👌👌

[@0xB8xor0xFF]

Why not make the pulleys flat against the frame?

[@LordPunckyii]

I am scared that you will survive when the zombie apocalypse will come....I'm joking, great job!!!

[@rafaelcruz2993]

Exelente

[@user-zi9nc7nq2q]

Class in vedeo

[@satxsatxsatx]

without feathers/fin, why do the projectiles not tumble in flight?

[@jjhack3r]

Because its not very powerful or fast whatsoever...

[@SethKotta]

The bolt is leading with its center of mass, for one. Also, fletching is used to increase distance and precision, not prevent tumbling. Had there been feathers added, the bolts would have struck the target closer together.

[@geovanegoncalves9646]

Uau queria uma dessa🖒

[@thefakeninja9790]

The thumbnail made it impossible to not click it

[@piotrr5537]

Not a compound. Whole point of compound is having 2 diameters on cam - one for string, one for spring. That way you can have stiffer bow limbs, since duble cam is magnifying string force. So limbs can move less, and more of stored energy is used to move string and arrow, less is used to move limbs. Also cams can modifiy force as a function of draw.

[@offwhitemke]

A couple of magnets could hold the bolt in place.

[@offwhitemke]

Leagle Eagle How does it add turbulence? I’m thinking the magnets would be embedded in the wood along the groove and the bolt would be mettle which would magnetize. Once it is released the magnets would not affect flight.

[@offwhitemke]

Leagle Eagle and magnets could be toward the back of the channel so that once the trigger releases by the time the bolt is leaving the channel it will be out of range of the magnets. I do wonder how those bolts stay steady. They’s have to be very well balanced.

[@user-cr3yx1om1p]

انت مبدع

[@JoZf_Gibson]

Thx

[@devendradewangan9239]

Nice👌👌👌👌👌

[@shaska762]

I never really understood how compound bows and crossbows works, never found a good explaining video, can some kind soul recommend a video or something?

[@etherealicer]

It is a fairly simple principle... but first off, what you see in the video is NOT a compound crossbow. The whole point of the compound system is, that the rotating disk is not round but increases in diameter. Larger diameter == longer lever == less force required.

[@shaska762]

@@etherealicer Oh, I see, the principle is simple indeed, but people just don't take their time to explain it better, or perhaps I'm a bit more dumb than I thought

[@etherealicer]

@@shaska762 The principle is really quite simple (the execution and the precise calculation to get a good power profile is of course a lot harder). It pretty much boils down to what I said, due to a non-round "wheel", you change the length of your lever. I found this site explains the different parts quite well without being too lengthy: www.outsideonline.com/2415644/pulse-oximeter-everest-safety-gear

[@shaska762]

@@etherealicer I'll read and maybe try to build a example with cheap wood, try to visualize it. But hey, thank you so much, brother

[@automajstorijediy]

@@etherealicer + wheelas and cams work as a snatch block,if connected that way,and not as in video,this is just a 1:1 gear ratio,but this is not important for this little device

[@russellmckeithan7087]

Try and make one out of hand tools for the ones that don't have power tools

[@isabelaako6215]

Did u do a steel ball plss

[@muneemji4931]

Nice😀😀❤️❤️👍👍

[@elpezquerespira2283]

66/5000 hi i love your videos but i would love you to make them longer please

[@danl.4743]

Just watch it on 0.5 speed.

[@CUBETechie]

Build it bigger and more powerful

[@pradeep07165]

Wow

[@prasaddixit7351]

Deadliest weapon to take revenge on bullies

[@JRTech4U]

Wao👍

[@hydrotek1780]

Try it in big level

[@PoketMarty04]

Make a radial 14cilinder solenoid engine with a propeller and try to make something fly lol