TFS: How to Build a Pie Cut Chopper Exhaust
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- เผยแพร่เมื่อ 5 ต.ค. 2024
- Pie Cuts and Choppers! Such an epic combination and one of the best vehicles to really show them off. In this episode, Justin the Fabricator walks you through the job of showing off some new Stainless Bros pie cuts.
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I’m a shop owner and I really appreciate guys who unselfishly teach in small displays like this I’m getting into more fabrication and really need these vids thank’s 💪🏽
That was awesome! The part where you showes your tacks popping loose was great. Showing that those type of thing's happen to everyone is very important! It makes you video's even better. Instead of acting like you are always perfect
+Tony Tully Go back and find the part where I stuck the tungsten into the puddle. I left that in too haha. We're all human.
The Fabrication Series
Oh No! I guess you've forced me to watch it again. Hahaha
@@TheFabricatorSeries hey what gas mix are you using? Is it argon with a small amount of helium? Cheers
Love the commentary during the design and build process. Great video.
Man, every time I come out of the engineering side of things and look at the craft side, it never ceases to amaze me.
I get the same coming out of the craft side and looking at the engineering side lol
@@JohnTCampbell1986 I'm in New Mexico. We're 50th in Education. They don't know TIG welding exists or how useful Bernoulli's law is.
@@Dr_Xyzt Thats the one to do with the relationship of speed/pressure when liquid/gas goes through a bottleneck?
@@JohnTCampbell1986 Yes.
This was great! - I used to work in a locomotive rebuilding facility - I welded the cabs back on the frames after the rebuild - I had an .045 mig bead half inch wide to put down 115 feet long for the close to 55 feet long cabs,,,, Great video (y)
Dang, thats a completely different scale of welding. How long did a job like that take?
Most of these type of fabrication videos have annoying presenters, but this guy is actually enjoyable to listen to and explains everything real good. Subscribed🙌👍
Just wanna say thank you for making this series. Incredible information you guys, or guy, are passing on. keep goin for the rest of us making it up as we go, thanks again.
Your a genius. I have a miller 190 and just bought a AC DC for aluminum but also others, and I'm binge watching all your videos. Thanks!
Bob Ross style: We have a happy little bend here no mistakes, just happy bikes?
Dig that shout out
That settles it! Now I will be pie cutting two headers for a V8 and one set for a motorcycle. Phenomenal video. Many thanks.
I'm a plumber and listening to you talk about just winging it with the angles was hilarious.
You would be able to show up and run drain lines no problem haha. It's the same thing! We are all just grabbing 45's 22's and just winging it 😂
So glad I watched this episode, thankyou.
Thanks for giving the sizes in mm very helpful!
Wow .. thanks for the video. I TIG welded all the railing on my sailboat. Now I'm building a chopper and will need a custom exhaust. Yours is the first video I've watch on exhaust welding. ... Don't really need to see more :-)
Wow, you have some amazing skills! I just started welding and read and watch as much as I can to glean as much wisdom as possible. Your channel is great, you show everything in great detail start to finish with excellent voice over commentary. Keep up the solid videos man!
Thank you!
Thatz so awesome i wanted to say i am tryin go figure out what j shold go for either welding or motorcycle mechinc
Another great exhaust tips video, thanks!
Great piece of information.. For those who’re planning to build one make sure there’s no fuel and stay clear off the air cleaner while tack welding because there’s always some fuel fumes left in the air filter and you don’t want your bike / shop on fire..
I've watched this video probably a dozen times over the years since it came out, and this winter, i feel im finally ready to tackle this... on my wifes bike.
Not mine of course, because *that's* getting titanium and i wanna get my eye in with the cheaper material first 🤣😂
advice for you brother,if u have not started anything yet....please try staff of hermes,the medical symbol with dagger between two snakes
u will loves that, i dont have tools and skill...nd in my country no one wants this headache..it can be done on vtwin, parrlell twin,even on any old 4 cylinder ones...
that looks cool af ! if i was living in the states i'd def come down to learn from you at your classes
Got that tungsten hanging way out there
Love the bikes paintjob
great that you share your pricing methods too.
Very , very nice work ! I understood every other word but still very very nice . I'm here to learn .
Awesome! The video shows everything I say usually.
great job! thanks for sharing that was a lot of argon!, greetings from Guatemala
Great work - Thanks Justin for sharing
Thats a hell of a stick out wow.
Awesome video! Might just use pie cuts on my intercooler piping setup
thank's for the metric conversion !!
No problem.
thats nice work bro well done......please try staff of hermes,the medical symbol with dagger between two snakes and engine heads will look like wings or add something,
Fuck yeah, great video, I like that he shows how much the project costs, helps me out as a fabricator how to estimate jobs
Now im only a hobbiest but pie cutting is one of the least difficult, and frankly least time consuming parts of the build process, I can't see the point of purchasing these unless you're a mad busy fabricator with no helpers.
Just for reference a 90° bend of that 1 ¾ is 26$, then add shipping.
Those pie cut pipes look sharp!
+Kenny Fowler I really like this job. I built so many parts on this bike that I want to buy it now haha.
The Fabrication Series Nooooo! Buy tools.......and more tools. I may have a problem. The last part of the vid ties in well with your tips on making a business of this. $1200-$1800 for pipes, you gotta be shittin' me! But then you spell out time and consumables and the numbers are there. I am finally learning not to clench when I drop the bill. Time is time and quality equipment costs money.
That was so badass
so many points for the Bob Ross reference !!:)
I'm thinking about doing this for 79 cb650... Lots of pie cuts!
Beautiful
Sweet jebuz... that’s gonna be a fk tone of welding and blending! I get those pieces for intermittent use but why not use 180s for at least the majority?
You are doing a good job!
Nice one Justin!
really nice pie work there, ( that's where all the purge gas goes )...just mentioning a different approach in my next comment. ( mandrel bends and pipe wrap )
and if you have a disk sander, you can use a Sharpie to just mark it on the bike ... pull it off each time to weld, and you can do it with Just Three Bottles, and No MIG. ( as mentioned below )
just saying, if you can't afford a Decent TIG stay home ... but if you can afford a good one, you will be fine
bet you got some pretty good weld burn, with that short sleeve shirt, huh? .... good brain prep for the jump, watching vids.
i tack on the bike with MIG, and weld oxy-fuel. ( it's the Non-Pie way to go, for those of you who can't afford a Decent TIG ), and you can use CO^2 for the purge,
but you have to let it cool down, and watch your distortion, ( and sometimes you grind out tacks and re tweak. )
another tip, is getting a disk sander from harbor freight ... so you can tweak in any cuts, when your cut is a little off.
Fascinating video, thank you.
Totally piped-out!
outstanding!!!
A good channel. I wish you success. Greetings from Murmansk.
Thats some serious stick out
It's rather exaggerated looking close up on camera. It's about 3/4" stickout which is pretty normal range for this cup.
Crazy question last i was told pipes with no baffles will disstroy your piston rings due to no pressure and youd have to run your jets in the carb really big
dustin wilkins no silly , it will destroy your hearing ! FUCKIN chopper jockeys.
yes and no, if you just remove the waffles it will overheat, and all the pretty things that can result from it - crunchy pistons, burned gaskets etc. So when you change intake or the out you have to re-jet; 2-3 sizes bigger or something - for starter. And later to find the optimum.
Absolutely killer! Great video, subbed.
These pipes are only attached to the cylinders, there's no other mounting point. Doesn't that put too much stress on the exhaust port?
Sick
Have you ran into any issues welding right next to the silicone purge plugs, any issues with melting?
Skilled work I’d sign the check....$$$$$$$
Hi! Thank you for your vids! Any idea how to make stainless steel fishtail for Motorcycle exhaust ?
Did you run that much tungsten out to help give more color? And I've noticed on your videos that when you are welding around pipe (especially small diameter) that your torch angle gets really severe at the end. Like almost 90 degrees. Are there any videos where you show how the weld changes because of this? I've seen instructional overrides that you should keep the torch angle as consistent as possible. Thanks.
Do they need any support bracket on or anything like it to stop vibration or movement?
Are all these pies cut the same?
Good afternoon, what is the thickness of the tube? Thank you
I want to hear how that bike sounds! 😉
Dude, that's fucking mint
How did those welds come out on the inside with the argon filled tube? Do they look about the same as outside? I think the only time I ever set anything up for gas coverage on the backside was for certification tests.
Kind of reminds me of times I would make a curve in a tube by cutting a lot of slices in it and rewelding
I want to make some new pipes for my bike. Where do you get these pies. Do they make plain steel?
WHOA ! That's a bunch of fragmented construction and looking damn good. Can't wait to see how your project turns out. J K
Tons of work - but worth it!
Question about pie cuts.
The 4.5 degree cuts must leave the ends of the pies oval.
How is it that you can rotate these as you please and they all match up perfectly?
Is it just within tolerance at these angles?
Can you use a pipe bender for uniformity.
It's an titanium exhaust? That's expansive and much difficult to weld than inox
Why such a long stick out on the tungsten, surely that entails a gales worth of argon.
Equiluxe1 I wonder if the back purging had anything to do with it?
Better coverage but allows me to over-dab more consistently on the smaller diameter tube.Argon flow is the same at about 30CFH regardless of stickout.
Back purge amount has nothing to do with it. Its completely separate.
That is a gale to me, I normally use around 4.5 L/min or 9.5 CFH with a gas lens.
Equiluxe1 I do aluminum at that flow rate haha. Stainless loves it's coverage and this cup delivers it. I use even more in titanium which loves coverage even more.
Dam it make me wana do my custom exhaust on victory v92sc..
Are they tight/loose radius 4.5 or 7.5???
Mmmmmmmmm pie. Fu@k, it’s 12.30 and now I’m hungry.
Awesome build! Here's my doubt: I was always told that exhausts should be equal length. Here, I see different lengths. What are your thoughts on this?
Thumbs up from Biker's Garage 101
Equal length is only beneficial if the two pipes merge in a collector.
If the length is tuned for peak power at a certain rpm, then the pulse from one runner effectively sucks the gas out of the other letting them breath better.
If separate as they are here it makes no difference.
Biker's Garage 101 it’s a poser, it doesn’t matter.
Awesome videos I could use some advice i have a custom chopper with a s&s shovelhead and I want to custom fit vance and hines shortshots that are setup for an evo. I bought them used what's the best way to convert those to a shovelhead setup ? I was going to buy some shovelhead flanges and weld those up in place of the evo flanges and fill in the groove from the evo any advice would be great
Great video and awesome job but I personally would stay consistent and made this horizontal straight segment of the front pipe out of 1-piece :) anyway, thanks for your videos, learned ALOT great fabbing techniques from You over past few years! Oh, and thanks for metric conversions too, greetings from Poland ;) I already got used to some imperial stuff, however some other still bit confusing if you need to listen and think fast :) and still had to convert 15 cfh to ~7 litres per min (l/m) and 180 cf to 5-6 ? cubic metres (m3) ;) again, thanks for your work
I actually wasn't sure what the metric unit was for gas flow rate and storage volume (how much gas the cylinder of argon holds). I'll remember that in the future.
The Fabrication Series at least in Poland we have tiny tiny bottles with 1.3 m3 of argon, medium ones containing ~4.3 m3 and ones which are I think ~9-10 m3, not sure. These are all under ~150bar of pressure when full (1 bar = 14.7 psi). There probably are even bigger ones for industrial use, I'm talking about the ones which you can easily get, for welding purposes in workshops, etc. Google says 1 m3 is 35.3 cf.
Wołek Wołek My argon cylinders are 5.6 m3 and hold about 172 bar or so. I have 3 of them at the moment.
The Fabrication Series and gas flow rate we state in litres per minute. 1 L/min is 2.1 cf/h, as I found somewhere
The Fabrication Series yeah... as a MIG only welder before and using only CO2, I did not realize how fast argon dissapeares :) and after I used few tiny 1.3 m3 bottles in a blink of an eye, I quickly switched to 4.5 ones too :)
Was it about the same cost useing the pie cut kit with saving time, compared to cutting them your self.
The prices shown at the end include the Stainless Bros pie cuts. It would be about $250 more if the pie cuts weren't bought.
When your tacking it looks like you just prop the cup? Do you run a foot pedal or switch? Nice work thanks
I know this is a an old video and probably won't get a reply but hey what size wire did you use ? Was it 1mm or 1.6mm?
Only $1800 for that exhaust? In Australia you wouldn't even walk in the door of a shop for under 3k.
Bit do you get sick of welding those pie cuts? Or are you like me with the MIG and love laying a long bead and trying to outdo yourself on the next weld?
I know this is 3 years late, but 1800 USD is probably pretty close to 3K australian.
@@chriso1373 that's not exactly how it works though.
If you earn $1800 a week as builder in the states, I don't earn $3000 as a builder in Australia. I still earn $1800. Therefore it costs almost twice as much.
Average wages between the countries are kind of similar. Cost of living isn't. US minimum wages are a joke though.
@@chriso1373 actually that's probably not 100% accurate. Australian wages are probably slightly higher. It depends on the industry. Truck drivers earn around the same. Aus pilots earn a hell of a lot more. US builders earn a hell of a lot less. US military wages are higher on average.
chopper or motorcycle, well said👍
Could you make some for a shadow I’ll pay for them
Out of curiosity, style aside is there any other advantage in doing pie cuts vs using sections of 90 degree mandrel bends? there would be a lot less welds and I would imagine that the inside of the bends would be smoother and (a little) better for exhaust flow. that said...man, those pie cut exhausts look so sexy! really enjoy watching your videos.
There are a few advantages to using pie cuts. There was only one unique advantage used on this build. The rest is decoration.
Check this vid out - th-cam.com/video/WyamR7t0J_o/w-d-xo.html
About mid-way through I discussed why they are often used instead of mandrel bends.
The Fabrication Series thanks! keep up the good work!
Anyone know if you can use a mig instead of tig to make exhausts? I'm sure the finish isn't as clean but can it be done?
Hi would u not walk The cup while welding?
Is open pipe? Is good for engine? Thanks
Such a dissapointment that straight section is 2 pieces why didnt you break the tack and recut it the correct length?
I didn't have the correct length. The straight sections were made from remnants. It can be ground smooth and completely disappear from the tube though. The finish work on these is still to be determined, so I left it as is.
scraps are for short pieces, when you need a length, you stop what you're doing, and goto the store and purchase another length. No excuse. If one of my subcontractors tried to deliver a product by welding 2 pieces of tubing together in a butt weld like this, it would be rejected. You've added a point of failure because you were too lazy to get a proper piece of tubing for a $1300-$1700 exhaust. LOL!
Alan S None of those pie cuts are failure points? It's exhaust with no back pressure, not a high pressure steam pipe. I think with all those pie cut welds, it ads to the look. All depends on personal preference.
Was thinking the same haha
I would have just cut the longer one so you'd end up with 3 equal pieces
Me parece que es una belleza.
How much money for all those pies??
👊 BAM those are SWEET 🍁💨👍
How come you didn't bevel the pies? I know that would be a lot of work, but they seem fairly thick to butt up and use filler on. Seems you would get very high bead profile. Just asking..
camera might make em look a bit thicker but they're only 1.6mm or .065 thick man
The pies are so thin, which was easy to see.
Everything on a close-up camera shot makes it look huge. For reference, the filler rod diameter on the close up shot of the gap i bridged is 0.045". They are 16 gauge pies which do not need to be beveled to get through. The heavy pulse pretty much did the work for me anyway haha.
Thanks, I think i need to check my eyes lol.
Is the material you use stainless steel?
Nice work, but mandrel bends would have been much easier, a lot less welding!
Mandrel bends would also make it look like any other exhaust as well. The client wanted something very different.
Quick question, say someone was welding stainless steel tubing for a motorcycle, and they didn't notice their back purge hose fell out. Could this person purge and re-weld, or would this require cutting out the bad weld and redoing it. I've got sugaring for about 3/8 the diameter of the tubing.
twag0735 I'll answer this from both professional opinion and personal. If it's literally only 3/8 of the diameter, you'll probably survive, but do be prepared for a failure (especially on motorcycle exhaust). I ultimately recommend sucking it up and replacing the bad section. Failure happens - it totally sucks - but take the route with the most integrity. You won't regret it. If you never see it again, you did right.
The Fabrication Series it's for my own personal motorcycle, which is why I even thought about it, but then I got to thinking. If it cracks, it looks bad on me, because if I don't do mine right, others will think I won't take the time to do theirs right either. I'll just chock that up as another learning experience as this is my first time welding stainless. Need to increase my travel speed to keep the welds from turning grey, and double check the back purge often!
The Fabrication Series thank you by the way for the response! I think it's really cool that you use your personal time to go through all these comments
What centerline radius are the pie cuts?
thickness stainless sir?
"Do it Bob Ross style"
🏆
The only thing I do not like it close to the drivers leg .
What's your argon flow rate with that much tungsten stick-out?
idriwzrd 25-30 or so.
I was really wondering what type of tube bender you used in those videos way back. The black one would love to know the name of it
JD2
What cup are you using on your torch
Fupa #12
What are you using for filler?
308 0.045"
Bro, at least start the bike. What a buzz kill.
ll1l2l1l2lll It's being built. There was no wiring on it in when we built the exhaust.
Just get a pipebender and do the pipes in two hours....