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 👍🏽!

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

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

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

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🇲🇽

You live in 2050 man

@boxingforfitness1221

3 жыл бұрын

he's a pretty smart guy.

@isthi000ify

3 жыл бұрын

Hahahahah

@lonewolf6842

3 жыл бұрын

Not what I expected at all, he’s creative

@jakeyxjakey1

2 ай бұрын

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

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

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

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

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.

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

@Kewlus

3 жыл бұрын

Get into this brother! 🤙

I was looking for this long time. Thanks

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

Just done my own one. Awesome!!!!

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

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

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

3 жыл бұрын

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

@alandgomez5905

3 жыл бұрын

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

3 жыл бұрын

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

@jdc4316

3 жыл бұрын

@@jlgtapout out of stock always

@latchie8893

3 жыл бұрын

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

That's genuis! Thank you!

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

@Kewlus

3 жыл бұрын

Thank you. That’s coming 👌

@crackseller321

3 жыл бұрын

Me too

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

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

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

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

3 жыл бұрын

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

@l.sdarkholme7559

3 жыл бұрын

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

Get that work. I like it!!

Loved this

Wow! Thanks man! This helps me a lot!

@Kewlus

3 жыл бұрын

You’re most welcome 😉

Excellent work bro

@Kewlus

3 жыл бұрын

Thank you bro 🙏

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

@mma_verse24_79

3 жыл бұрын

Which twister you buyed 40 or 20

@BoxFan_GizmoJ

2 жыл бұрын

@@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 ?!??

Thx man brilliant idea, gonna try it out💪

@Kewlus

3 жыл бұрын

You’re most welcome 🤙

Freaking fantastic. Thank you 😊

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

Sweet. That may be the best one

i love this. i already have both!!!

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!

Thank you, bro!

Wow brother,very good,thanks😁💪💪💪👏👏👏

Unique idea awesome

Keep up the good work. your too cool.

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

@Kewlus

3 жыл бұрын

Thank you 🙏

@Quellebreo373

3 жыл бұрын

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

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

@Kewlus

3 жыл бұрын

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

NICE JOB

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

3 жыл бұрын

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 🤣🤣🤣

wow good idea thanks broo

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

@Kewlus

3 жыл бұрын

Thank you brother 🤙😃

awesome video do the whole build! i subbed!

Thank you

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

Awesome 👍

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

3 жыл бұрын

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

3 жыл бұрын

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 🤙🙌

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

Nice one.

Nice, very responsive refex bag

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

3 жыл бұрын

Thank you. I’ll probably try that!

Thanks!

@Kewlus

Жыл бұрын

Thank you 🙏

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

3 жыл бұрын

This video has more details: kzread.info/dash/bejne/ZWyYyryfdarQmLQ.html

@jamilsmith8981

3 жыл бұрын

@@Kewlus Perfect, thanks again!

Good idea thank you

@Kewlus

3 жыл бұрын

You’re most welcome

@goldyavinash3887

3 жыл бұрын

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

Your dog is cute as hell

I going to use the springs for the garage door

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

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

2 жыл бұрын

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

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

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

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

3 жыл бұрын

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

@miguelsoto9579

3 жыл бұрын

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 .

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

@Kewlus

3 жыл бұрын

It’s real 😂

@crittycothran6271

3 жыл бұрын

@@Kewlus im glad its alive and well! Lol

Cobra noodle 👌🏽

i currently try to make that in poland

I mad one it so good i love it a lot

@Kewlus

3 жыл бұрын

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

@mirnazavals7562

3 жыл бұрын

Yes

@mirnazavals7562

3 жыл бұрын

This is so cool love boxing

I want one

Nice ❤❤

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

@Kewlus

3 жыл бұрын

Yes absolutely!

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

The best

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

3 жыл бұрын

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

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

4 ай бұрын

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

4 ай бұрын

@resilientfarmsanddesignstu1702 some interesting ideas there!

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

@Kewlus

3 жыл бұрын

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

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

2 жыл бұрын

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

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

@Kewlus

3 жыл бұрын

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

@hhova29

3 жыл бұрын

@@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

3 жыл бұрын

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.

Hi Ur awesome!!

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.

Full build please

@Kewlus

3 жыл бұрын

Coming up!!!

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

3 жыл бұрын

Yes brother 👌

He looks like a Harry Enfield character.

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

Ur crazy lmao i love you 🤣🤣🤣❤❤❤

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

@Kewlus

2 жыл бұрын

Might work 🤙

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

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

2 жыл бұрын

Let us know when you find them where others can look

@yepyepyepyep8604

2 жыл бұрын

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

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

3 жыл бұрын

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

3 жыл бұрын

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

3 жыл бұрын

Thank you 😊

@notpastranapastrana2403

3 жыл бұрын

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

@AndresEscrich

3 жыл бұрын

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

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

3 жыл бұрын

I’d go 40kg but not more

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

3 жыл бұрын

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

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

6 ай бұрын

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

6 ай бұрын

@@KewlusPipe for the base. Thanks

move the spring higher up

@Kewlus

3 жыл бұрын

Yep 👍

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

@Kewlus

5 ай бұрын

what is that?

@Themedbeast

5 ай бұрын

@@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

5 ай бұрын

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

Where do you get the steel pipe and flanges from mate

@Kewlus

3 жыл бұрын

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

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

@Kewlus

3 жыл бұрын

Are you referring to this one: kzread.info/dash/bejne/hZ2Fz86xkqW-mdo.html ?

@UziBlancoOfficial

3 жыл бұрын

@@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

3 жыл бұрын

Cool 🤙

How lenght the metal pipe below twist power ? Thanks

@Kewlus

Жыл бұрын

Go up to the top of your thigh muscle.

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

3 жыл бұрын

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

@Quellebreo373

3 жыл бұрын

​@@Kewlus Thanks man

Which of your Cobra bags turned out the best

@Kewlus

3 жыл бұрын

The latest version with the Kewlus PRO Spring is by far the best simply because I can adjust the speed as well as the reach

@dsd-downshiftdave8056

3 жыл бұрын

@@Kewlus have you designed a refex bag with a sparbar?

@Kewlus

3 жыл бұрын

I have a video where I show how the same base can be used for both - is that what you mean? kzread.info/dash/bejne/l5WZtLiMe626hZM.html

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

3 жыл бұрын

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

3 жыл бұрын

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

3 жыл бұрын

Yes that was in one of my latest videos kzread.info/dash/bejne/d4lpk6uGoquZhco.html

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

@Kewlus

7 ай бұрын

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