Can You Make a Cobra Bag Using a Power Twister?

In this video I take you on my journey making a prototype of the Cobra style of punching bag using a 30kg Power Twister. You can buy a Power Twister on Amazon from around $20-$30 - here's one: amzn.to/30LAlR3.
Update: See my DIY channel transformed into a global brand producing the world's first modular cobra bag: kewlus.com/
Cobra bags explained: kewlus.com/blogs/general/cobr...

[@alandgomez5905]

This is pretty funny. I've thought about doing this years ago with those springs you see on garage doors. They come in multiple sizes and are typically 3 to 4 feet. Turns out they're either the same or more expensive than the power twisters lol. Edit: Damn, it turned out sooooo much better than I thought. Great job dude 👍🏽!

[@philippinesidiocracy1018]

You live in 2050 man

[@boxingforfitness1221]

he's a pretty smart guy.

[@isthi000ify]

Hahahahah

[@lonewolf6842]

Not what I expected at all, he’s creative

[@jakeyxjakey1]

not really. 50 years ago this how how the majority of people thought. they were creative and built things themselves rather than buying it for much much more money. Reedy is the last of a dying breed

[@MojoMinistry]

Oh snap, I was just about to buy a cobra bag before I saw this video. It even looks more durable than everything on Amazon and way cheaper to build.

[@jlgtapout]

Go to fiercereflex.com. Very expensive but the real ryan garcia bag

[@alandgomez5905]

If you're in the US, go to any hardware store and look for springs made for garage doors. About the same price as a power twister (maybe a little more) and longer so you have some wiggle room.

[@zeekotheone4060]

@@jlgtapout nobody wants to spend $500 let’s be honest bro😂

[@jdc4316]

@@jlgtapout out of stock always

[@latchie8893]

Double end bags are cheap and probably better kit to use. Cobra bags are good too but ridiculously over priced. Same as aquabags. It's just a bouy with logo painted on it

[@boxingforfitness1221]

aw man! i thought i was the only one that thought of making one using this spring bar.. YOU'RE A GENIUS!

[@airlessspuitentwente5443]

Super awesome idea! Best reflex bag DIY ever by far!

[@huntingwolf20]

And yours actually has better swinging action than the Cobra reflex bag in my opinion.

[@Dillionstellar]

I just repaired an everlast reflex bag that had a busted bladder thanks to your videos!! Keep it up!

[@ivanmireles948]

thank you man!!! i dont have too much money and i was the same idea like you to do the cobra bag, and you do the cobra bag to easy and cheap in one video. nice👌 Saludos desde Mexico🇲🇽

[@nikolasmavros4958]

So glad I came across this page ! I got one of those springs at home 🙌🙌

[@Kewlus]

Get into this brother! 🤙

[@chrisknightnaturalwellness9697]

Oh yeah ✨💪🏽👊🏽🥰🤙🏽✨ just a few more refinements. Material upgrades, modification and BAMM!!! A awesome functional design! Going to make one myself!

[@strife11]

yoo homie thank u for all these Videos Saved me so much money and also gave me a new hobby . much respect from Massachusetts

[@rjaikofitness]

This what ive been waiting for. Thanks for the uploas bro.

[@huntingwolf20]

This was super helpful man. I've been trying to figure out how to make a cheap cobra reflex bag. My old slow (bottom spring) Everlast reflex bag is old, rusted, beat to death. I'm still using it but it's basically a little bit of metal and 85% tape holding it together.

[@mrtasim2894]

I was looking for this long time. Thanks

[@l.sdarkholme7559]

I didn't finish looking at the video and I liked. And even you didn't get the job done you've earned all praises. Keep up the good work.

[@Kewlus]

Thanks brother. Actually it turned out to be something else entirely! I think I just invented a Cobra Sparbar! 😂

[@l.sdarkholme7559]

@@Kewlus Congratulations, and Thank you for sharing your ingenuity. Cheers from NYC.

[@MrPoucePouce]

That's genuis! Thank you!

[@tylerwilkinson804]

Reedy - Your builds are brilliant and I'd love a full build with instructions. Subbing now!

[@Kewlus]

Thank you. That’s coming 👌

[@crackseller321]

Me too

[@richardhoughton7541]

Just done my own one. Awesome!!!!

[@talonmclaren2070]

Love this build, best way to upgrade it I can think of is to somehow safely make it so you can safely hit something as small as a tennis ball. Like you said, the smaller the target the more accuracy you need. I got it just drill a hole the size of a pole and some tennis balls and slide them on there in random locations

[@maheer3314]

I love this tutorial this dude smart asf I'm gonna make this

[@lukeward7464]

Bro, your own bag look like they work better than most of the ones online. Was just about to buy one too. Fuck that, making my own now. Respect amigo!

[@scrollkidsylable6793]

Legend bro! I'm buying all the part tonight!!

[@sophisticatedbeaver3569]

Just got my power twister delivered! So excited for the weekend to build this badboy. Thanks man

[@mma_verse24_79]

Which twister you buyed 40 or 20

[@BoxFan_GizmoJ]

@@mma_verse24_79 I Bought A 30kg & It Seems Too Stiff. Did You Make One Of These As Well ?!? If So… How Good Did It Come Out ?!??

[@wordlife_97]

Oooh this shall be interesting! Gonna like this video before I watch!

[@isthi000ify]

Loved this

[@stavroskess4879]

Good work Man i will try to do this! Thank you.

[@lorenzo2439]

Gosh that works pretty well... Good one 🤙🏼

[@oleksiy.tryfonov8]

Thank you, bro!

[@bobbazoid9969]

Get that work. I like it!!

[@vamvakisa316]

Freaking fantastic. Thank you 😊

[@TheFANTOM187]

Excellent work bro

[@Kewlus]

Thank you bro 🙏

[@spozuchan1607]

Wow! Thanks man! This helps me a lot!

[@Kewlus]

You’re most welcome 😉

[@mohammedusaamah6154]

Thx man brilliant idea, gonna try it out💪

[@Kewlus]

You’re most welcome 🤙

[@thelastgeneration1926]

i love this. i already have both!!!

[@djnickdomino]

Sweet. That may be the best one

[@tomo9224]

I love this mate. Finally someone online that uses metric!! The only thing that would make this video perfect is chowing down on a Bunnings hot dog at the end. No chance of that happening any time soon though. Stay safe out there mate. Love your vids. Keep them coming!

[@Kewlus]

Thank you!!!😂 🤣🤣🤣 yeah I’ve also just gone on a plant diet so unfortunately those yummy hotdogs I loved soooo much are out for me. I’ll have to film it once they are back though- just the feet of the crowds lining up 🤣🤣🤣

[@salvosensei1]

Wow brother,very good,thanks😁💪💪💪👏👏👏

[@fabiogiunti7296]

NICE JOB

[@kkg.renecasino1214]

Unique idea awesome

[@thunder6912]

Nice, very responsive refex bag

[@utubeaticktko5630]

Keep up the good work. your too cool.

[@utubeaticktko5630]

Thank you

[@abrahammondragon2976]

wow good idea thanks broo

[@heybaeuwb8888]

awesome video do the whole build! i subbed!

[@NeonMillennials]

Great Work bud!! Keep it going . Hug from Portugal ;)

[@Kewlus]

Thank you brother 🤙😃

[@jimorr1370]

You are a BEAST 💪💪💪🔥!!!!!!! Keep them coming!!! From 🇨🇦🇨🇦🇨🇦...Respect!!!:)

[@Kewlus]

Thank you 🙏

[@Quellebreo373]

me too!!! I’m trying my make one myself but the base is my main issue now. Spent WAY too much on it by now lmao

[@daniellintion9013]

Amazing work here beautiful project I would recommend buying a speed bag and placing it upside down and using zip ties and tape to keep in place

[@Kewlus]

Thank you. I’ll probably try that!

[@thetruemorg]

I really like the idea of that kind of feedback and having to move from a punching bag. The pool noodles seem to be about the right kind of size to make sure you're accurate. The different colors could definitely be good for zones of practice. Actually what I want to do is take that same build but bring the spring a little bit lower and use it for my Filipino stick practice. I think you're really onto something and I'd love to see the full build you come up with.

[@thetruemorg]

I did do the build for both the toilet paper roll in the past and the volleyball. Both of them turned out all right but didn't seem like they would last because the PVC finally cracked after maybe the 20th time I used it.

[@Kewlus]

Yeah I think opens up a whole lot of possibilities. I’ll need to put some thought into the bottom section height adjustment so that I can test all different kinds of options. I’m also still keen to try it with a ball. Stay tuned brother 🤙🙌

[@itzcjofficial6265]

Intresting.... nice video! you deserve more subs! bro

[@Kewlus]

Thank you bro. Slowly getting there. Aiming for 1 million in 2 more years. Possible you recon?

[@mitchhamrick3117]

Thanks!

[@Kewlus]

Thank you 🙏

[@jhernz858]

Awesome 👍

[@yurisavchenko4032]

ha you best thanks for the idea i am going to buy spring thanks thanks thanks

[@spaceshipearth999]

Nice one.

[@DanielOrtiz-dl8eo]

For this beauty... I have subbed...

[@josephrivera3826]

I going to use the springs for the garage door

[@macoyzequerra9450]

I made our own base on this but we used spare used tire as base.

[@jamilsmith8981]

Man, you're legit. I've been wanting to get all this equipment but it's so damn expensive. I bought the Power Twister, but is there a breakdown of the rest of the pieces and a walkthrough for putting everything together? Thanks for the great content and I can't wait to see what you come up with next!

[@Kewlus]

This video has more details: kzbin.info/www/bejne/aWnHmY2ceqydnrM

[@jamilsmith8981]

@@Kewlus Perfect, thanks again!

[@goldyavinash3887]

Good idea thank you

[@Kewlus]

You’re most welcome

[@goldyavinash3887]

@@Kewlus sir I used ur ideas started to use it. To improve kids hand eye coordination.... And kids r enjoying it.....

[@wsmfsh9963]

I'm truly impressed with your creative idea ! just wonder can that be added with spar bar ? May be difficult as spar bar work with still vertical arm.

[@Kewlus]

Thank you. The spar bar needs to have a rigid mast, so the idea is to replace the top section components but you could use the same base

[@lolenisi9187]

fuck me dead. this is the best cobra bag ive ever seen no lie lol

[@2016709889]

I think it would’ve been better with the spring closer to the top, with the bag attached 12”-18” above the spring. The cheaper versions have the spring low, the expensive versions have the spring higher.

[@andreasgerasimatos4890]

Got the same spring with u but 40kg as u recomended ..it seems pretty tough though and maybie i have to change it or put it to the vase

[@matthewmuse9477]

You should post a document with all the parts and sizes you used.

[@Kewlus]

That's coming soon. I'll do that once I finish testing prototypes. I'll also add it to my book, Fighter DIY.

[@carlosgonzalez-nx1qn]

I like it now try putting another screen on the very bottom so it can wave around more..

[@bubsonhh]

i currently try to make that in poland

[@gmnboss]

I want one

[@redvolvo38]

While that's great Will it work with the umbrella base Thank you very much you're very good at what you do

[@Kewlus]

Yes absolutely!

[@resilientfarmsanddesignstu1702]

Nice job! I have a cobra timing bag but I got bored and experimented around with various universal and pivot joints that I had lying about to try to mimic the synovial joints of the body. More specifically, I experimented with a parallel angled offset to the cobra neck (the parallel offset is achieved with two pvc angle joints connected by a short length of pvc pipe a universal joint can be attached to this. The net effect is to create a timing bag that mimics the erratic head, arm and kick movements of an opponent. This rotating offset can be placed above or below the spring to produce different effects. It can be flipped upside down. All are useful for training. In my case, I have it set up so that I can swap out straight and offset sections to get different motion from the same basic cobra. You seem like a curious and capable guy. I’m sure that if you gave this idea a try, you could perfect it into something really useful.

[@resilientfarmsanddesignstu1702]

What happens when you add the offset with the pivot joint is that the offset and anything that is attached above it can freely rotate in a circle about the vertical axis. So when you punch the bag this swiveling action adds side to side and front to back movement on top of the front to back movement caused by the spring, the overall effect is to simulate the effect of a moving and punching opponent. Try it yourself and you will see.

[@Kewlus]

@resilientfarmsanddesignstu1702 some interesting ideas there!

[@richardgomez1151]

Your dog is cute as hell

[@repoman3254]

Full build please

[@Kewlus]

Coming up!!!

[@miguelsoto9579]

Looks good . U know a try garage apring Wasn’t fast enough, I try one from doors at ACE I welded to make it longer came out good but still looking 4 a Spring to make it faster . Like what ur doing looks good man . Nice work take care my friend

[@xxxgamingFTW]

Make a video showing. I’m a welder aswell and I wanna start making some

[@miguelsoto9579]

Alejandro Abraham the spring I got weren’t long enough there for doors so they got welded to make the longer. still looking for a better one . it moves faster if the spring is open .

[@VictorLaVance]

Cobra noodle 👌🏽

[@L46K]

Looks great, Im looking to build this one myself. For the power twister what would you recommend could i go even higher than 30/40kg or is 30/40 the best.

[@Kewlus]

I tried 50kg and it was too stiff. Go with 30 or 40kg.

[@gamingLegend-it9is]

Nice ❤❤

[@notflickgaming55]

The best

[@metallicaaddict2436]

Hi Ur awesome!!

[@stokker5232]

Would you recommend going with the 40kg or the 30kg for the spring? Anybody who has tried it with a 40kg?

[@reece7713]

I’m subscribing you do great work :) would like item list so I can price up everything and get it ordered. Definitely let you know when I make either the spar bar. Or reflex bar maybe even both if I can afford it :)

[@Kewlus]

Check out some of the pre made components on my website: kewlus.com

[@mirnazavals7562]

I mad one it so good i love it a lot

[@Kewlus]

That’s brilliant! What strength power twister did you use?

[@mirnazavals7562]

Yes

[@mirnazavals7562]

This is so cool love boxing

[@yepyepyepyep8604]

This looks like the bag for me, my only issue is finding somewhere that sells galvanised steel pipes in the UK tried a few hardware stores but nothing the size I need

[@Kewlus]

Let us know when you find them where others can look

[@yepyepyepyep8604]

@@Kewlus will do man, cheers for taking the time to reply

[@victoraberg119]

Yo reedy please reply if u can, Will the power spring be used for the adjustable one? Because I need to order one and I am looking forward to build the adjustable one

[@Kewlus]

Yes brother 👌

[@hhova29]

Awesome. I am about to get that spring and attempt yo build this. You should sell the man.

[@Kewlus]

Check this one out before you buy a power twister: www.fighterdiy.com/2020/10/how-to-make-boxing-cobra-punching-bag.html

[@hhova29]

@@Kewlus great thanks. So for $40 that includes the advertised spring, pvc and 2 foam noodles? What else would I need if I buy this the base? Was interested in putting a very light weight ball on top

[@Kewlus]

I've detailed all the items you need here: www.fighterdiy.com/2020/10/how-to-make-boxing-cobra-punching-bag.html, for both cases: wether you buy the Top Section Kit or just the spring. I'm about to start testing putting a light speedball on top, so that video is to come. I'm also likely to release an inner spring as an option for those people who might have a heavier top.

[@albertroundtree299]

He looks like a Harry Enfield character.

[@crittycothran6271]

I thought the dog was photoshopped in just floating in dead space for a min lmao

[@Kewlus]

It’s real 😂

[@crittycothran6271]

@@Kewlus im glad its alive and well! Lol

[@domfed]

Hey reedy hope you see this. I just wanted to let you know whenever you make the adjustable version of this I am going to make it myself. The reflex bags online are over priced and work just like this. How long until the adjustable version comes out

[@Kewlus]

One more prototype next, then the full build. Ok I’ll show the adjustable version 👌

[@kaderattou3783]

Ur crazy lmao i love you 🤣🤣🤣❤❤❤

[@leroyphrlrn3661]

move the spring higher up

[@Kewlus]

Yep 👍

[@dannypiggott7193]

Where do you get the steel pipe and flanges from mate

[@Kewlus]

I get these at my local Bunnings which is a big hardware store chain in Australia

[@all_media247]

hey mate reckon the 30kg spring was good or 40kg might be faster, ebay has upto 60kg resistance. oh and cheers for the awesome ideas. def a pocket grab with those models in the market

[@Kewlus]

I’d go 40kg but not more

[@soebagioatmodjo7961]

How lenght the metal pipe below twist power ? Thanks

[@Kewlus]

Go up to the top of your thigh muscle.

[@jaminhojunior2175]

Hey Reedy! Is it work with 50kg power twister with speedball on the top? Hugs from Brazil. 🤙🏽

[@Kewlus]

Might work 🤙

[@CL-Filmz]

Dude, did you build your house?

[@Kewlus]

😂 🤣🤣🤣

[@BobRoss-wm3lc]

😂

[@boxingforfitness1221]

He planted the trees, he cut the trees into plywood and 2x4's, he made his own shingles, he made his own glass windows he spun his own silk and grew his own cotton to make his own fabric, to make his own clothes, he planted all his food he built his own cell phone

[@Kewlus]

😂😂😂😂😂😂

[@CL-Filmz]

@@boxingforfitness1221 he created God before God created the earth.

[@bruceparker6142]

Man you must have conceived and given birth to yourself. So innovative.

[@UziBlancoOfficial]

Do you have a video making the other reflex bag with different spring

[@Kewlus]

Are you referring to this one: kzbin.info/www/bejne/iZq0np-ul6eLn9k ?

[@UziBlancoOfficial]

@@Kewlus ill check an see, I'm new to the channel but have been thinking about how to do this for a while now.. i have the cheap everlast version and gonna do a break down an reconstruct lol 😆

[@Kewlus]

Cool 🤙

[@user-yq8hx5qj9r]

I almost watched all your videos. Just want to ask for the size of the GI pipe, is it 1 1/2 or 1 1/4 inch? Thanks

[@Kewlus]

Not sure which pipe you’re referring to, but in most cases it’s the 3/4 inch pipe. Also check my website DIY posts: kewlus.com/blogs/diy

[@user-yq8hx5qj9r]

@@KewlusPipe for the base. Thanks

[@AndresEscrich]

hey mate! just got a 60kg power twister and im worried its gonna be a bit to hard/rigid to work, what do you reckon? I pretend to use steel pipes on both ends of the cobra bag, and on the upper end use a soccer ball with a plunger attached! (i guess the build is heavier than this one, but enough to compensate 60kg?)

[@Kewlus]

You just have to give it a try. I haven’t tried a spring heavier than 30kg, but with a heavier to like a ball I think it should work. You’ll need a super rigid base though. Possibly even bolt to the ground if possible. Good luck 🤙👌

[@AndresEscrich]

Reedy Kewlus Thanks for the inspiration mate! I will be getting a 25kg umbrella base and if it isnt enough will put a 20kg olympic disk on the top! Keep up the good work brother

[@Kewlus]

Thank you 😊

[@notpastranapastrana2403]

andres escrich how was the 60kg twister..was it too stiff?

[@AndresEscrich]

notpastrana pastrana It ended up being perfect! I used a steel galvanized pipe, a plunger and a football (soccer) ball and a shitton of tape, so it was heavy enough to have a really good action! Just to consider im holding my base with 4 25kg sand bags (i did my own diy base). Get it bro, My spring is slightly above hip height. If you want a vid of the action and final result dm me @andyescrich

[@Themedbeast]

Hey buddy can we try tummy trimmer springs for the next project??

[@Kewlus]

what is that?

[@Themedbeast]

@@Kewlus it’s a cheap fitness instrument that doesn’t really work but it contains spring in it … I have checked it’s spring it can be used and it just cost 3$ hardly

[@Kewlus]

@Themedbeast that’s a different kind of spring that would not work.

[@Quellebreo373]

Reedy could you critique my build so far? I’ll use the imperial system since that’s how I got them and I don’t have a calculator right now. I have a 3 foot long aluminum tube with 1.5 diameter. Then inside that is the taped up handle of the power twister. Then on the other side there’s a 1 foot aluminum tube with 1.25 diameter. Then I have the speed bag on top. So far it think it’s good but how heavy would the base need to be to keep it in place?

[@Kewlus]

Sounds pretty good. Yeah a strong heavy base is the key. I’d recommend a heavy umbrella base or stand 🤙

[@Quellebreo373]

​@@Kewlus Thanks man

[@okreally4608]

What if you took one of the desk top speedballs punchingbag and take the suction cup off and put it on top to look more like the reflex cobra speedballs? I like that you make things at a more reasonable price!!😊👍🏻🖤

[@Kewlus]

Yes I tried it and it worked. However, my desktop bag broke after about 3 sessions - the material that it is made from is of poor quality.

[@okreally4608]

What about a regular punching bag speedball, it would still be way cheaper than $299 plus shipping and tax 😁 take care!!!! I like your thinking!!!!!!!!😊

[@Kewlus]

Yes that was in one of my latest videos kzbin.info/www/bejne/e4aYYnyDp61mi8k

[@brandonseefoo93]

On Amazon I only found the 20 and 40 kg power twister, which would be better?

[@Kewlus]

if you go with 40kg you'll need to make sure your base is rock solid, but you'll get better rebound action