How To Make a Cobra Bag Using The Kewlus Cobra Bag Spring

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Latest version video of the complete DIY cobra punching bag build: • How To Make a Cobra Ba...
Since this video and since launching the Kewlus KS2 Cobra Bag Spring I've done lots of tests and came up with many important modifications to make this the ultimate DIY cobra punching bag. Watch this video to get started: • How To Make a Cobra Ba...
You can order the Kewlus KS2 Spring here: kewlus.com/products/kewlus-sp... Detailed instructions here: kewlus.com/blogs/diy/how-to-m....
Check out the full build and review video by one of the top boxing gear reviewers, Carlo Rosauro at CSquare Boxing: • DIY Cobra Reflex Bag W...
Cobra bags explained: kewlus.com/blogs/general/cobr...

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Опубликовано:

25 июн 2024

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Комментарии : 216

@ibrahimowicz92 3 года назад

This guy is positively bonkers. Australians are just a special breed, gotta love it.

@jacobavramis9888 3 года назад

Just bought your spring after looking at reflex bags for years and seeing them all mostly fall apart even at $300+. You have an amazing idea here man I hope it takes off like crazy cuz your build is solid and not a ripoff, you're a good guy for doing this THANK YOU!

@jamesalanroberts 3 года назад

This dude is a legend, been a huge fan of his videos for a while now. Love being an Insider too Reedy 🥊💯

@johnsanchez8029 Год назад

That damn spring makes the biggest difference! Way better than without having the spring. Very clever, friend. May God bless you.

@ashleecahusay3105 2 года назад

Tip: you need to adjust that down at your chin to improve your speed punch and nice and smooth punches

@Pie7ino 3 года назад

funny enough this speed bag looks better than the ones that i can buy in the uk

@creaase406 3 года назад

Super excited for this new spring. Speed on it looks crazy!

@joshuacowell8969 2 года назад

Legendry effort mate. I love this idea

@JesusiDream 3 года назад

Dude has some fast ass hands .. this spring is a lot faster in person.

@mathewhernandez3197 3 года назад

Greetings from California, you are gonna save me loads of money sir. Thank You!!!!!

@raygsbrelcik5578 2 года назад

I've always been Innovative myself---haven't always had the funds to afford Pro' equipment, so I made my OWN! I've watched several of these DYI videos; This is one of the better ones.

@josephsundstrom7950 3 года назад

Your too good at making these now. Lol. Even ur comfort level is seemingly much higher as is the production rate. Awesome 👌 I'm gonna make this new one

@believeinfidelity 3 года назад

Keep up the great work!

@JBDacasinJr 3 года назад

The goat of combat diy.

@masterofbeastofgames 10 месяцев назад

Love this bag - it's tiny, fast and well balanced

@joedamore9350 4 дня назад

The pool noodle thing is genius

@HuyTran-up9dz 3 года назад

you are amazing!! so much respect, subbing right away

@Kewlus 3 года назад

Thank you 😃

@SilverHorde96 3 года назад

Just pre-ordered. Good stuff mate, I'm a huge fan of your work!

@Kewlus 3 года назад

Thank you 👍😃

@academiadeboxround1223 3 года назад

@@Kewlus where can i order

@Kewlus 3 года назад

Preorder here: kewlus.com/products/kewlus-spring-ksr12pro. New stock coming in a couple of weeks

@vishaltorne5282 3 года назад

Excellent bro👍

@thismerealname6412 3 года назад

I cant wait for the wall mounted pad

@deskelly9313 3 года назад

I don't even box but here I am subbed

@barrybatiste9363 3 года назад

Got the order to go through on my other card my pro spring pre-order

@youngelkim9004 3 года назад

just pre ordered the spring :)

@Kewlus 3 года назад

Thank you 😊

@barrybatiste9363 3 года назад

Did you use credit card

@manuelfuentes1546 2 года назад

Espectacular 👌 te felicito...gracias por enseñar 👍👍👍

@anthonyzhang4918 3 года назад

just bought one!

@nickvandersluys92 3 года назад

Pre ordered 👌🏼

@Kewlus 3 года назад

Thank you 🙏

@Y0o0o0o0o0o0o0o0o0ow 2 года назад

Thanks for this! I'm gonna make one with a motorcycle shock.

@juanguerrero8572 8 месяцев назад

Excelente!!!!!

@l.sdarkholme7559 3 года назад

I got the pre-order.

@Kewlus 3 года назад

Thank you 😃

@60gidget 2 года назад

After converting each component into US to AUD (australian dollars) I decided it wasn't going to be cheap. Luckily one full set popped up here in Australia for sale for 185 including postage and i snapped it up. So excited, can't wait for it to arrive, much cheaper than the other brand which are selling for over 400 AUD. Sweet.

@Kewlus 2 года назад

Yep you got yourself a sweet deal - that's a demo set which includes the set of Stabilisers, which have not even been released! With the stabilisers, I recommend placing cardboard at the bottom of each sand bag before filling up the bags - that'll give you a more rigid base. I'll post it off to you on Tuesday. Cheers.

@nanigami969 3 года назад

Hey can u make another boxing hand wraps???

@ezek4765 3 года назад

just pre ordered it! hoping to get in shape :)

@Kewlus 3 года назад

Thank you 😊

@Jskd06 3 года назад

Just pre-ordered, would love to know how you made the adapter to use a normal speed bag and the height adjustable adapter, keep up the great work!

@Kewlus 3 года назад

Thank you 😊 the speed bag adapter and height adjustable mast videos are coming soon 👌

@alfiejacildo1518 6 месяцев назад

I duuno why this video isn't viral

@watkinsrcful 9 месяцев назад

Nice

@sabet3600 3 года назад

Great

@juliusdc8950 3 года назад

Can you get those spring at Bunnings? Great video mate👍👍👍

@Kewlus 3 года назад

Thank you. Not at Bunnings yet, just on my website kewlus.com/products/kewlus-spring-ksr12pro

@rdj5715 3 года назад

Its even better than a professional bag 🤣

@real-jj3ei 2 года назад

You saved 45000 thanks

@jesussaves5062 3 года назад

nice nice

@barrybatiste9363 3 года назад

Had to buy light weight bar on smart boxing still trying to preorder your spring to

@Kewlus 3 года назад

I replied to your email. Perhaps try paying through PayPal which is a different payment gateway. Not sure what the issue is. Please email me if you are still having the issue.

@barrybatiste9363 3 года назад

Ok try use paypal going buy card

@barrybatiste9363 3 года назад

I was using usa bank debit card

@hectorenriquelopez2966 2 года назад

GENIAL

@bogsticz9444 2 года назад

I have a question, how long does the spring need?

@user-et9zu1vq3r 3 года назад

شكرا لك على ترجمة الغه العربيه

@joseantoniorosainfante156 3 года назад

Súper

@aldotrinidad7877 3 года назад

How thick is the wire? Thanks!

@raylmao0596 3 года назад

This is a great cobra bag from what I can see. I want to make my own cobra bag just like this, can you please tell me how you bolted the flange into the mdf board? Did you use an electric drill or tool of some sort. Thanks in advance.

@Kewlus 3 года назад

Yes I used the flange to mark the first hole, then drilled it with an electric drill. Then I bolted the flange using that hole and drilled out the other holes using the flange as the guide (drilling directly through the flange holes). After drilling each hole I would put a bolt through and tighten. Drilling and bolting one at a time is the best way to do this. I used 5/16 or M8 bolts

@raylmao0596 3 года назад

@@Kewlus great thank you!

@administraciondefincasalma1878 3 года назад

i ve just bought you a spring , i hope enjoy a lot with it, one question, Hoyw do you adapt a standard punching ball? What do you use?

@Kewlus 3 года назад

Here’s the video to show you: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-gr2xEBatf84.html

@administraciondefincasalma1878 3 года назад

@@Kewlus thanks bro, greetings from spain.

@kobedo8195 3 года назад

can u show us how to the mdf board. Having lots of trouble with building it.

@Kewlus 3 года назад

I’ll do a top tips video this week and will try to cover that

@faisalsafi7104 3 года назад

Just wondering, when will these spring be out, as I'm going to pre-order?

@Kewlus 3 года назад

Expecting to be shipping in mid February

@ConnorLyon 3 года назад

Reedy what tape did you use for the pool noodles? Standard duct-tape? Something different?

@Kewlus 3 года назад

Yes just standard duct tape. The stretchy type. Wide roll

@paramxo4054 Год назад

Will the kewlus spring fit in hayabusa cobra reflex bag setup?

@Kewlus Год назад

@juanguerrero8572 8 месяцев назад

Buen día amigo, esos resortes donde se consiguen? Buen video

@Kewlus 8 месяцев назад

kewlus.com/products/kewlus-spring-ks2

@damonvilla 3 года назад

is there any way to mount the spring to the pole without the hose clamps? I really liked the idea of the last spring being screw on but it is sold out.

@Kewlus 3 года назад

Yes you can simply tape it in place with thick duct tape 👌

@lalalala-ce3fn 3 года назад

Does the Keewlus spring (the regular one) get more flexible over time? Cuz mine is very very stiff. It's like a complete different one than the videos. Any help or tips?

@Kewlus 3 года назад

It’s designed to stay stiff. Can you post a video of your setup on Instagram?

@_VC93 2 года назад

Hey mate, can you get those pipes from Bunnings?

@Kewlus 2 года назад

Yes 👍

@barrybatiste9363 3 года назад

Does your site take debit cards

@immanuelgranato1141 3 года назад

I just bought your pro spring but could you drop the link for the hose clamps so I can order them as well :)

@Kewlus 3 года назад

Thank you. You’ll find the link here: kewlus.com/blogs/diy/how-to-make-pro-cobra-punching-bag

@Kewlus 3 года назад

Butterfly clamps: amzn.to/35jfkjI

@jalenaquino9385 3 года назад

Hey reedy, where’s the link to the clamps on Amazon?

@Kewlus 3 года назад

It’s on the DIY post kewlus.com/blogs/diy/how-to-make-pro-cobra-punching-bag

@PARCIVAL98 18 дней назад

Como puedo conseguir un resorte exactamente igual en la ferreteria? Como pedirlo?

@theweekendoddz1176 4 месяца назад

what's the dimension of the spring? thickness, diameter and length?

@boazshriki1168 3 года назад

Can u do a video that u show as how did u do the Masking tape so tight?

@Kewlus 3 года назад

Ok I’ll do that

@boazshriki1168 3 года назад

@@Kewlus thsnks u very much

@MischaS94 2 года назад

Can you use a stainless steel pipe instead of galvanized aswell?

@Kewlus 2 года назад

If it’s the right size and you can get a flange for it the possibility yes

@cyantadeo975 3 года назад

Hey man great video, whats the total price after getting all the materials?

@Kewlus 3 года назад

Around $90

@cyantadeo975 3 года назад

@@Kewlus oh okay thank you! I will try to build one

@rafaelrodriguez8626 Год назад

I have a Ringside Cobra Reflex in which the spring got messed up. Can I used the Kewlus spring to replace the spring that came with it?

@Kewlus Год назад

It’s not really compatible

@barrybatiste9363 3 года назад

Trying order spring won't let my card go through

@fagnerpetroski8313 8 месяцев назад

Hi, I really like your videos, I learned a lot from watching... I made my homemade cobra bag... I just couldn't find the right spring, I tried to make a purchase on the website but it doesn't deliver here in Brazil. "Cry", could you send me the spring specifications so I can build one... please... hehehe

@Kewlus 8 месяцев назад

Do you know anyone in the USA that could buy one for you and mail it? If not, contact me via my website and I’ll see what I can do

@fagnerpetroski8313 8 месяцев назад

Worse than not, I wish I had someone I knew out there... I would have already asked them to matter to me...@@Kewlus

@kobedo8195 3 года назад

I can’t find any butterfly hose clamps. What can we replace that with? A stainless Steel hose clamp the same?

@Kewlus 3 года назад

Yeah that should work

@NamNguyen-hx7iy 3 года назад

Any suggestions on stabilizing the pipe into the flange without using threadlocker or adhesive on the threads? I’m getting quite a bit of wiggle there.

@Kewlus 3 года назад

That’s unusual. I’ve never come across a wobbly flange. Could it be a defective flange or pipe thread that you could exchange?

@NamNguyen-hx7iy 3 года назад

It’s more of the shaking of the pipe that goes into the flange, which eventually causes the pipe to get loose on the flange. I have to screw it back in tight after about thirty minutes of punching. I actually see you address this in one of your spar bar videos where you stabilize the pipe with PVC support at the base. I don’t have as wide of a base, so just trying to come up with a solution on my 2’ circular base.

@Kewlus 3 года назад

In my case the pipe actually gets tighter in the flange. The one I installed at the local boxing gym doesn’t get loose either, so I really don’t know why yours gets loose

@demircashmoney 3 года назад

Any idea on when the new components like the arms are coming out? I really am looking to buy a cobra bag but the thought of building one interests me. I'm gonna buy the Kewlus Pro Spring but not sure if I should buy components from other places or wait for yours to come out. When do you reckon all your other products and components come out?

@Kewlus 3 года назад

The Kewlus Cobra Head, which is genuine leather covered foam speed ball on a composite arm is coming later this month. Height adjustable stand is coming the following month. 🤞

@demircashmoney 3 года назад

@@Kewlus Will the speed ball have the shape of an actual one or the diy shape ones seen in your videos? And lastly if I were to buy all 3 components (spring, arm, stamd) all I would need is a base correct? Love the videos btw, I subscribed

@Kewlus 3 года назад

Thank you. Yes the speed ball will look and feel like a real leather speed ball. The stand will come with a flange that you could bolt to concrete. There will also be a couple of optional bases, including a 4-suction cup base for a smooth surface and a sand filled base for carpet.

@demircashmoney 3 года назад

@@Kewlus ahh perfect. I was thinking as well to just get the ball with arm, spring, and leg and build my own suction stand. All in all with the products including the Bag with Arm, Spring (50$), Leg, and Base how much will it cost in total?

@Kewlus 3 года назад

I’ll price each component as I release it. Hard to predict as I don’t yet know all the costs

@christophercarter6151 6 месяцев назад

KS2 or KS3 ?

@francobisio7770 3 года назад

What are these types of springs called? because it does not reach us in Argentina. good video

@Kewlus 3 года назад

These are compression springs. It’s free shipping worldwide including Argentina. You can preorder here: kewlus.com/products/kewlus-spring-ksr12pro

@francobisio7770 3 года назад

@@Kewlus Thank you very much, at this time the things that come from outside the country are retained in customs

@Kewlus 3 года назад

Ah ok. Sorry to hear that brother

@barrybatiste9363 3 года назад

Faster than fierce reflex bag

@Kewlus 3 года назад

As fast as you need with adjustable speed 👌

@barrybatiste9363 3 года назад

Sure right

@austinlai932 3 года назад

Can I use a PVC pipe for the bottom pole?

@Kewlus 3 года назад

Not recommend as it needs to be sturdy and PVC has some flex

@welshdober 2 года назад

I live in Canada where can I go buy a spring? home hardware? Home Depot Princess auto one of those types of places?

@Kewlus 2 года назад

You can just order one here: kewlus.com/products/kewlus-spring-ksr12pro

@Quellebreo373 3 года назад

Will the spring’s release date be announced in the video?

@Kewlus 3 года назад

Yes

@Quellebreo373 3 года назад

@@Kewlus just pre-ordered the spring off your website

@Kewlus 3 года назад

Thank you 😀

@deliriousiza1563 3 года назад

When is the spring going to drop and ship????

@Kewlus 3 года назад

Shipping from Canada in February

@ismails7627 3 года назад

My pvc pipe is 25 mm, do you think the spring will work on it, if not, any tips ?

@Kewlus 3 года назад

If the outer diameter is 25mm yes it will fit

@Jskd06 3 года назад

How did you get the 3/4" pipe to slide into the 1" pipe? isn't there a welded seam inside that gets in the way? I went to home depot today and tried to do it but all the pipes had a welded seam inside of them.

@Kewlus 3 года назад

I got the pipes from Bunnings (hardware chain of stores in Australia) and they fit perfectly. I guess it might not work in every country as they are manufactured to different standards. Is there any way you could file away the welded seam inside?

@Jskd06 3 года назад

@@Kewlus It would be difficult to grind inside of the pipe the whole length thru.... I think I could probably grind a small channel on the outside of the 3/4 pipe so that the weld fits into it.

@Kewlus 3 года назад

Yeah what a bummer. Worst case scenario you might need to join small sections of pipe to increase or decrease height, but I’d recommend using the one inch pipe and flange for the bottom and a reducer to go to a small section of 3/4 inch pipe. I’ll show it in my height adjustment video that’s coming soon. Thank you for letting me know 👌👍

@caseynguyen 2 года назад

my screws keep coming loose from the punching is there a solution to that?

@Kewlus 2 года назад

Use bolts instead and put rubber feet on the underside for clearance for the bolt heads

@lawdizon9565 3 года назад

When will the Pro springs be in stock and ready to ship?

@Kewlus 3 года назад

It’s now in stock and shipping out to customers as fast as we can 👌😃

@lawdizon9565 3 года назад

Thanks. Just placed my order!

@marcschoenbach2397 3 года назад

How tall should the rubber feet be? And will using them make the platform wobble more?

@Kewlus 3 года назад

Just enough to provide clearance for the bolt heads. They don’t add any wobble

@marcschoenbach2397 3 года назад

Reedy Kewlus thanks so much for the fast reply!! You’re the best

@lakiskrystal7381 2 года назад

I have a question.if I use a two feet wooden square platform how I can get close to bag for short inside combinations??

@Kewlus 2 года назад

Just step onto it. You can also put a mat over it

@lakiskrystal7381 2 года назад

@@Kewlus or I can cut it a little.let's say 10cm.

@Kewlus 2 года назад

The bigger the more stable. Check this video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-XiF_KLJuu98.html

@AA-oc3kx 3 года назад

How heavy does the base have to be?

@Kewlus 3 года назад

60 to 80 ponds. You can also make a suction cup base for a smooth floor which is coming up.

@miguelsoto9579 3 года назад

Hey buddy can I order one before u get them ??

@Kewlus 3 года назад

Yes you can preorder kewlus.com/products/kewlus-spring-ksr12pro

@martywob 3 года назад

I also cannot find the butterfly clamps, is this build possible without the clamps, online and hardware stores just can't seem to find the right size, just got the spring but can't find clamps anywhere, and ones I can find just do not seem to be the right size.

@Kewlus 3 года назад

You can use any type of hose clamps, but you might need a screwdriver to tighten and loosen

@Kewlus 3 года назад

You can also simply duct tape in the meantime it while you look for clamps

@martywob 3 года назад

@@Kewlus great, thanks for the info

@kingkr8586 3 года назад

nice where can i get the pro version will it arrive quick to canada toronto?

@Kewlus 3 года назад

kewlus.com/products/kewlus-spring-ksr12pro and it will be shipping from Toronto!!!

@kingkr8586 3 года назад

@@Kewlus is it available now or soon?

@Kewlus 3 года назад

You can preorder to ensure you get one. Expecting shipping in February

@kingkr8586 3 года назад

@@Kewlus ordered!!

@Kewlus 3 года назад

Thank you 😊

@FuckYourCredentials 3 года назад

Hey, what's the dimensions of your ndf base??

@Kewlus 3 года назад

About 2 feet wide and 3/4 inch thick (16mm)

@rohanshouker8937 2 года назад

Has anyone got a link to the gavanlised pipe can’t find the one with the right diameter

@Kewlus 2 года назад

What country?

@rohanshouker8937 2 года назад

@@Kewlus uk

@Kewlus 2 года назад

Look for a 20mm pipe. Outer diameter 26.7mm. Details here: kewlus.com/blogs/diy/how-to-make-pro-cobra-punching-bag

@sezgincelik2096 3 года назад

Give me the sice for this spring

@fernandogodoy9377 3 года назад

Hola Con que PegamentoUsa Para Pegar la Pelota

@Kewlus 3 года назад

No glue, just tape.

@michaelhudson7415 3 года назад

Was there something wrong with the regular diy reflex bags. I know you made a lot of revisions

@Kewlus 3 года назад

Like you said I made many revisions to perfect it. The Kewlus PRO spring is my latest design and works better than anything that I have made

@barrybatiste9363 3 года назад

Do I need put money on paypal don't have credit card just debit card

@dulguunmunkhjargal5992 8 дней назад

I need it thus spring where is the buy what is the size ?

@Kewlus 8 дней назад

kewlus.com/products/kewlus-spring-ks2

@cesarochoa1088 Год назад

Que resorte es?? De que medidas sera

@Kewlus Год назад

You can order them from kewlus.com

@shawnmcnamara7283 Год назад

Great video, thank you for the tutorial. Do you think it would be possible to have this build combined with a swivel arm? Or will the spring make the swivel unstable? It would be nice to have an all-in-one slip/punch build.

@Kewlus Год назад

I tried that but it didn’t work

@trojanboxing9873 3 года назад

Good day What’s the length of the spring.

@Kewlus 3 года назад

12 inches

@trojanboxing9873 3 года назад

@@Kewlus that’s what she said ha ok cool I’ve subscribed to your channel also, I’ve got some ideas my self. Keep up the good work mate.

@Kewlus 3 года назад

😂😂😂

@blendedmartialarts8707 3 года назад

I'm form sriya

@saiyanrivals1612 3 года назад

Is it true that you’re planning on selling your own cobra bag with the kewlus spring?

@Kewlus 3 года назад

Yes! I’m currently working on the manufacturing processes for the other components 👌

@saiyanrivals1612 3 года назад

@@Kewlus awesome can’t wait to see. looking for an alternative to these crazy priced bags from people like ryan garcia lol

@lalalala-ce3fn 3 года назад

@@Kewlus I know its probably a bit too early but what is the price youre planning to sell for? For the whole cobra bag

@jesussaves5062 3 года назад

🥊🥊

@Kewlus 3 года назад

I don't have a price in mind as it depends on production and shipping costs and I don't know all of these costs. I'll make sure I have affordable options for all. I'll sell components, like the Kewlus Spring, Adjustable Kewlus Arm & Kewlus Leather Speed Bag, Adjustable Kewlus Mast & Kewlus Base. I will have different versions of components - Standard and PRO, like the KS12 (coming soon) and KS12PRO. The standard components will be lower priced. Thus the total price will depend on what options you choose. You can also choose to make your own components to save money, but everything will be compatible so it will be up to you.