How To Make a Cobra Bag using the Kewlus KS2 Cobra Bag Spring

This video covers all of the best options and modification to date for making the ultimate DIY cobra punching bag using the Kewlus KS2 Cobra Bag Spring. The best thing about this cobra punching bag is that it is modular and you can easily make different components to suit your training style. Make sure to watch to the end where I reveal new components that are coming soon to the Kewlus.com store to make your DIY even easier.
Kewlus KS2 (PRO) Spring: kewlus.com/products/kewlus-sp...
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[@Rudypoo42]

This is amazing. This is hands down better than any cobra bag on the market under $500. You can legit make this bag for under $100. Can't wait to see what's next.

[@Kewlus]

Thank you 😄

[@carlosmaldonado291]

i may have force it on too much haha ima have to buy a new spring cuz that things stuck stuck fml lmao

[@Kewlus]

Try twisting it clockwise using pliers. That works for me if it’s really stuck

[@richardyocum6053]

Long time response but how did this work for you? I'm thinking of making one as i'm just dipping my toes into cobra/reflex bags.

[@nanakay3732]

May you live forever. I was about to spend $500 on what they say is the best reflex bag out there. Subscribed and turned on notification. Eagerly waiting for the full kewlus version to be released. 🙏

[@loser4cent]

I’m just lazy af lol. I’ll get the spring and I’ll wait for your new attachments to come out. Thanks man.

[@mindless-candle6924]

Just got my spring yesterday. It is amazing

[@adzrilizahamazmi3709]

This keep getting better

[@MistaKnifeguy]

Just got mine, and assembled in minutes!

[@johnkaren400]

I just ordered my Kewlus spring!! You should do a video for a better professional Sparbar/cobra bag combo that’s freestanding and portable!

[@kuzzBO]

hell yeah, just put an order in! cant wait! everything else you can get at Bunnings! thanks mate!

[@editfx5242]

i can’t seem to find the 3 quarter inch pipe on the bunnings website any idea why?

[@Kewlus]

3/4 inch pipe is the 20mm pipe at Bunnings

[@aticktko1]

Wow your product wicked also that's fast Bro

[@groundunder12]

Wow! This is great! Just went on the page. How long before you'll have all the parts for complete kit back in?

[@diegogonzalez9032]

Great vid man , try to make a tutorial on how to make a speed bag

[@badwoodworking]

Any update on when the bags will be in stock again? Excited to buy a set!

[@Kewlus]

I’m expecting them on Monday

[@rohanshouker8937]

Anymore suction cups in the Uk the ones on the link don’t deliver to uk

[@JuanRodriguezRR9795]

Hola. Soy de mexico. ¿Donde puedo conseguir un resorte similar o igual??

[@christianquirozrosas5267]

Good

[@SrReX720]

i can't get a 3/4 inch pipe in spain. They dont sell it in stores, what can i do?

[@mohammadadibeyg209]

Hello, if the spring is compressed, does the speed increase or is it open?

[@Kewlus]

Many factors dictate the speed my friend

[@i_i8924]

How would I turn a regular reflex bag into a cobra bag using this spring? I get building one from scratch but feels like using my already reflex shouldn't be too hard, no?

[@Kewlus]

You might be able to but it’s often not worth trying as the result would not be optimal

[@Sean-uy3cu]

Hey mate any idea if Bunnings has the steel pipe?

[@Kewlus]

Yes they do

[@lakiskrystal7381]

Is an ALUMINUM MAST in the end of the video?GREAT COMPONENTS !!!

[@Kewlus]

Yes 🙌

[@austinlai932]

Hey so I built the cobra bag yesterday and it was super hard to get the spring on the galvanized pipe, and now I can't get it off, same with the PVC pipe on top. I don't even need hose clamps because it's so tight. I want to make the height adjustable version but I can't if I can't get the spring off, what can I do? And also why is my spring so loud?

[@Kewlus]

Twist the spring clockwise and pull it off at the same time. Use pliers if needed

[@eduardonavarro9589]

Hi Reedy, I’m having trouble finding pipe 3/4 pipe that fits in 1 inch, what brand of pipe did ypu use or what was the store you purchased from?

[@Kewlus]

I got mine from Bunnings in Australia. The 3/4 inch pipe doesn’t always fit into the 1 inch pipe. I think I got lucky there

[@yurxghtr9065]

Can u tell me the size of the poles? And what are the blue things inside the spring

[@bor1422]

Bottom. 1 inch treaded flange. 1 inch pipe. Reducer 1 inch to 3/4. Or reducer/adapter 1 inch to pvc. Butterfly hose clamps.

[@delboy4607]

Are the t-shirts on there alwell bro

[@Kewlus]

Not yet. What kind of t-shirt would you like to get?

[@Hellobabarazam]

How long does the spring take to arrive in australia

[@Kewlus]

1-2 days

[@melodyv7756]

Can the spring fit on my ringside cobra reflex bag ?

[@Kewlus]

I haven’t had the pleasure to use a ringside cobra bag, so really can’t say. Has anyone?

[@itzcarter8957]

How long does it take to ship to Canada?

[@Kewlus]

2 or 3 days 👌

[@christianquirozrosas5267]

Were can i Get that sping ?

[@Kewlus]

kewlus.com/products/kewlus-spring-ksr12pro

[@carlosmaldonado291]

how do you get the 3/4 inch pipe to fit through the spring? it is a very snug fit and difficult to slide through the spring

[@Kewlus]

Always twist clockwise, including to take it off. Some pipes can be a tiny bit bigger than standard, so could be tight. Set up your base first and it will make it easier

[@carlosmaldonado291]

@@Kewlus you need insane grip strength to do that lol. i’ve only made it passed the first coil 😂😭😭😭

[@carlosmaldonado291]

i may have force it on too much haha ima have to buy a new spring cuz that things stuck stuck fml lmao

[@Kewlus]

Might be that the pipe is bigger than standard. See if you can find a pipe that’s the right diameter (1.05 inches or 26.7mm)

[@carlosmaldonado291]

@@Kewlus the 3/4 inch pipe is what i have, must’ve been closer to 1 inch rather than 1/2 inch

[@barrybatiste9363]

How much faster is the ball with funnel compare to the pool noodle one

[@Kewlus]

IDepends on how much each version weighs. If you use minimum tape on the pool noodle one then the pool noodle one is faster.

[@barrybatiste9363]

@@Kewlus ok thanks have try It

[@tristonrodgers7140]

Where do you get the spring?

[@Kewlus]

kewlus.com/products/kewlus-spring-ksr12pro

[@lakiskrystal7381]

How long is the aluminum mast at the top of section;;

[@Kewlus]

If you’re using a PVC pipe with a funnel then I recommend 16 inches long. Shorter will be faster, but less reach and less momentum

[@lakiskrystal7381]

@@Kewlus thanks.but I want to use an aluminum pipe like yours in the end of the video

[@Kewlus]

You’d need to find one the right diameter which is almost impossible. I had that custom made by one of my manufacturers. I also recommend PVC because it’s lighter. The only reason I’m using aluminium is because of the ease of manufacturing and installation of spring buttons. For DIY go with a PVC pipe and you can’t go wrong 🤙

[@lakiskrystal7381]

@@Kewlus Yes.i have studied all of your videos.i am living in Greece.Actually I found the right diameter from commercial flags.light weight aluminum only little heavier than a pvc pipe.spring buttons included !!! i can send you some photos if you wish.

[@Kewlus]

In that case just use it like a PVC pipe and the same length

[@chuyjlm4373]

Make a galvanized heavy bag stand

[@mr.leonhart5277]

How much does it cost in Phillipines Peso?

[@mr.freddie]

2500p more or less

[@mr.leonhart5277]

@@mr.freddie Thank you Man

[@editfx5242]

do you mean a 50mm flange?

[@Kewlus]

1 inch flange is the same as the 25mm flange

[@bryantperez3917]

U should Start your bussnies and sell your own cobra bag