How-To: Fix a Dented Two-Stroke Pipe

[@michaelwendler5589]

Good thing he has glasses protecting the top of his head!

[@BikerBenny]

I know,, I was like WOW 😬😲

[@Free-j3t]

Safety is always a good thing but I think he’s been In the game long enough to keep himself safe

[@laosgpsmapmidnitemapper9411]

Not smart - high pressure and higher due to heat expansion- one pinhole spitting red hot metal, he will be wearing an eye patch for the next fix

[@Free-j3t]

All bunch little bitches

[@aussiehound2374]

The Pommys are funny like that.

[@wesleybickel2869]

I marveled at all the flammable degreasers and paint propping up the pipe as he heated it up glowing red

[@mbrick]

Pressurized with 100+psi of air, a torch, and no safety glasses. I too like to live dangerously!

[@PiefacePete46]

mbrickner87: While waving a flame around a selection of flammable aerosols and a propane canister... the bike racing guys always did like a bit of risk and excitement in their lives! Fascinating process to watch tho'.

[@jaymed5228]

Not even 100 he did 150psi with no safety gear on he literally knows what he’s doing amazing 🤩

[@arturozarate1752]

🤣🤣🤣🤣 hey Mike B....when you can open your videos with "G'day" ain't a whole lot out there capable of raising that man's blood pressure or changing his facial expression! I bet he polishes that pipe back to mirror shine with the still beating hearts of a once pregnant crocodile.

[@erikeggenbakstad]

It is not pure oxygen thankfully, just air. 78% N2 and about 20% O2, and the rest is misc other gases.

[@crazybob1954mo]

@@jaymed5228 Says The Blind Man ..... He should put some fucking Glasses On.....

[@3milio0o95]

I guess he is a very skilled mechanic and knows what hes doing. Personally I would use some sort of protection, because I would hate have a glowing hot metal balloon popping in my face.

[@soulsnatcher9228]

Same thought I had 150psi is no joke

[@jasonstalder5208]

@@soulsnatcher9228 when you heat compressed air the pressure decreases, also its generally high quality materials and you can watch what the metal is doing and stop WELL before anything bad happens

[@angelosantaniello4113]

3milio0o interesting vid, but no eye protection? Wearing them on his head

[@eduardosampoia5480]

@@jasonstalder5208 You are a major moron.

[@rztrzt]

@@eduardosampoia5480 He was asleep in science class...

[@MrOnering]

Flame on - check . Glasses off - check . Job done - check , glasses on. Safety third - check . Lol

[@williamfrock268]

I've done this with water. Fill up the pipe with as much water as you can get into it and stick it in the freezer, no caps are necessary. If the first freeze doesn't get the dents out simply let the water melt and do it again. It's really cool how it works and way easier.

[@thefreedomguyuk]

Just make sure wife is away when freezing...

[@johnnyrudolph5225]

This really work?

[@ballstud2007]

@@johnnyrudolph5225 I have done it a few times. Doesn't warp your pipe either like this

[@johnnyrudolph5225]

@@ballstud2007 water and freezing is gonna be my first step before pressure and blow torch. As fun as it looks lol

[@johnnyrudolph5225]

Pipe has entered the freezer. It's harder getting water in it than it looks.

[@tomthompson7400]

thought i was the last person actually doing this , .. nice to see im not alone , I was taught how to do this thirty years ago by a trials bike rider.

[@snowrider4495]

I do this method but I use hydro pressure first to somewhat straighten the pipe if deformed then I use this method for the dents! I use the same clamps for both water and air pressure!

[@tomthompson7400]

@Grant Lynch just make up your own to suit.

[@TheBroozer11]

Did you make you own fittings for the ends would like to see or know the best way of doing this

[@tomthompson7400]

@@TheBroozer11 I made my own .. but there is a kit available on e bay

[@peterp.6249]

@@snowrider4495 How do you pressurize the water? Fill it and then use compressed air?

[@ChrisKAloha]

150 psi? What? Everyone else uses 60 psi but I must admit this is the best finished product I’ve seen

[@davidofqwerty]

Been doing this for years and have never needed to use heat like this, just the kit to block the pipe and a jet wash, always looks perfect

[@slipngrip]

how do you fix a dent with a jet wash? if you shove the jet into the pipe will it inflate?

[@jasonstalder5208]

@@slipngrip you make up a fitting similar to the air..... pressure washers are a much higher psi tho

[@dgretlein]

I’ve filled a gas tank with water, creamed a raw potatoe in the filler and stuck the tank in the freezer. Got the dents out of my tank. Could do the same, maybe, with the expansion chamber - if your freezer is big enough. Great trick. Thanks for sharing.

[@timmwhite9218]

I did the same with my Rickmann tank back in '78...worked like a charm!

[@rx7australia]

Mick is a Legend, knows his stuff, ex racer and bike mechanic took some big dents out of my sherco 300 pipe yesterday, came up like new. But yeah I know of people who tried to do it themselves and blew out the pipe so only get it done by someone who knows what they are doing.

[@oh58bell]

The "Clamps" are just split bearing pullers, available everywhere! Easy to fab the plates

[@joegallaway2378]

i can’t find them anywhere, where did you get yours from?

[@Calthecool]

Some inexperienced person has probably died trying to do this.

[@b.c4066]

Agreed, he's very skilled and experienced, good way to get some kids face mutilated for life.

[@Sambardown]

Many most likely bro🤦🏻‍♂️😂

[@mollyfilms]

I was at Farleigh castle back in 82 as I lived next ti the track. It’s still there and still has memories. Noyce, Thorpe and so many others I filmed there back in 2010.

[@AndysRV]

I used to just fill my pipe with water and freeze it for a few days the ice expanding would pop all my dings out.

[@sevkpn9043]

But if you let the exhaust too much tile in the freezer the exaust can break

[@AndysRV]

S.C.DTDRD CREW ive never had one break in the last 35 years but i guess its possible.

[@spikesta3593]

Andys RV12 AM15 it is possible, happened on a pro circuit pipe of mine.

[@AndysRV]

Spike Sta that sucks ass

[@joeshearer1247]

How much do you think it really affects the power to have a small dent

[@arturozarate1752]

My HERO! Safety consultants steer clear away from his part of the country!

[@tonygSDWR]

Had my FMF pipe fixed this way. If you don't your shiny pipe being heavily discolored from the flame, it's a great method. If I had a 2 stroke ever again, I'd get a non-nickel finish to avoid this and I don't care for shiny pipes.

[@vintagetintrader1062]

I have tried the freezer trick, fill up with water , make sure the low area with the dint is at the bottom of the water lever.put in big chest freezer, then watch, I check every 5 minutes once it’s close to freezing. And with big dints you need to let it melt, a bit to fill the dint depression then freeze again.

[@potaiter8026]

What most won't appreciate is that while he is making it look easy, it is a artisan skill that takes a long time to develop. He knows instinctively what heat/colour the material is at it's yield point and melting point - he stays between those two very tight tolerances while still guiding the internal air pressure to apply force in exactly the right place at the right time. Masterful.

[@Dsm152]

😂 mate it’s not that sophisticated. Fill with air, heat to cherry red aaaaaaand that’s it.

[@potaiter8026]

@@Dsm152 You are the Hidden Master - You say above "Fill with air, heat to cherry red aaaaaaand that’s it" but tell a novice to do that and he'll get a face full of hot air and blown sheet metal... C'mon, you know it :)

[@Dexter_motor]

Your method looks so relaxing...other guys video always use water give preasure interior to fixed it.

[@bastian1559]

I haven't 2 stroke bike but it's good to see this

[@John-jr1qi]

I do this kind of stuff all the time. I like to keep my aerosol cans closer to the action though.

[@justabouthadit5872]

I wonder how much the pressure increases with the heat, and decreases with the metal un-denting. Be interesting to put a gauge on it.

[@Stu-SB]

I was waiting on a huge bang !

[@petermurphy75able]

Always a good idea to store your aerosol cans right behind the exhaust you're heating up with propane. Good job sir.

[@phoenixvalkema3380]

thats acetylene sir

[@petermurphy75able]

@@phoenixvalkema3380 It isn't. Its propane. He says so himself.

[@GROVER3871]

@@petermurphy75able its acetylene propane doesnt get that hot

[@GROVER3871]

@@petermurphy75able also look at lines going to the torch one oxygen line and one acetylene line

[@petermurphy75able]

@@GROVER3871 I use burning gear for a living and you can use either gas. The only difference is the nozzle. An acetylene nozzle is one solid piece whereas the propane nozzle is in two parts. As soon as he lit the flame I could tell it was propane. Propane is safer but not as hot as acetylene but still works fine.

[@derekbond3512]

Wow that really is like magic, not seen this procedure done before, brilliant.

[@jarnosaarinen4583]

Bloody good! Those clamps look pretty straight forward to make!!

[@dannymiester5825]

Jeez, it worked brilliantly but a face visor is surely a must

[@SirDrakeNewcanon]

Thats it! Its so easy! You are a great expert! Great idea!

[@socks2441]

150psi compressed air and red hot metal (probably making psi closer to 180 or so). and no safety glasses, lol. legend. i wouldnt have the courage to do that.

[@ianwheeler683]

Did this a few times back in the 80s after l was shown by a mate. Never a problem though l never used that much pressure. Pipe always sat better after dents taken out as it de stressed it as it returned to its original shape.

[@tanitolifestyle7920]

ME SORPRENDIO ROTUNDAMENTE LA MEMORIA DE ESTE HOMBRE, PERDONA LA DE ESTE ESCAPE HAHAHAHA

[@buni7340]

The best repair guy on internet)

[@bautistagz8999]

That dude is a savage, torching near spray cans, wrong safety glasses and a pipe bomb full of compressed air. This man wants to die lolm

[@brandonmiller1638]

If you watch this clip fully, you'll notice the artistic ability being presented. Amazing example, and very straight forward. I am willing to bet that it took years of finesse, to perfect this work. 😮

[@deanpratley125]

Ive seen a guy use just a pressure washer. Worked like a charm.

[@PiefacePete46]

Dean Pratley: Interestingly, I watched this video a this morning. kzbin.info/www/bejne/pH3UZKKQZbGZqLc It's a bit amateurish, but it's good for a laugh, and it DID work. (If you don't mind getting wet, it shows the weak areas of your welds!) The advantage of compressed air and heat is the ability to soften selected areas of the repairs.

[@DrMcampbellDC]

Nice information. It looks like he almost leans into the flame at about 1:34 :-o

[@enduropromotions4633]

1:32 almost reallll bad

[@Dante_S550_Turbo]

air is compressible. Adding heat is making that psi rise. You essentially have a pipe bomb that could go off. Use water and water pressure, with 0 air in the system you don't have to worry about things exploding dangerously.

[@fhe3220]

He's probably been doing this for more years than you have been alive.

[@michaelimobersteg5860]

Those water pumps are pushing 700 psi, I dont think 150 psi with some heat gets it above that.

[@bmxiggy]

150 psi is nothing. Your bicycle road bike runs at 150psi. Even if your have a week weld and it breaks its just going to make a hissing noise

[@jasonstalder5208]

so why do tires loose pressure when hot?? beside air compresses, water does NOT. you sir would be dangerous with half a brain...

[@Kollar0718]

That sounds okay, but then water pressure should also be used to push out the dents - the water would just take away the heat of the torch if one would try to heat the dent in the exhaust.

[@ynotjf]

Excellent demonstration!

[@themoonissquare323]

Anyone mechanical seeing that done for the first time is amazed, only more amazing when you freeze water but that takes longer, is harder to seal and doesn't do as good a job......oh and it can burst the pipe if left too long, but freezing can work wonders, the tip was to seal the big end and pre-freeze that section up to the first dent, then fill the rest and seal the little end, the ice block made a better seal..... i guess you could also freeze the little end before the whole pipe, some pressure would always gets out.

[@reynaldoray7539]

That’s the torch I use to heat my dabber

[@rileylitts9958]

Jesus i wouldnt even think of getting that thing that close to my glass

[@rileylitts9958]

Im sure it heats the quartz up real quick tho

[@davecc0000]

Do the clamps do anything else except hold the pipe in place? How important is this? Is that an air hose connected to the end of the pipe? Could have given us more information about the setup.

[@v8trauma]

The air pressure pushes the dent out where the pipe is plastic (due to differential pressure like an inflated balloon). Too much air will make the pipe act as a bourdon tube, but relatively low pressure like 150psi won't cause too much permanent deformation. The clamps allow the zorst to be pressurised by capping the ends, one has a stabbing to allow the compressed air in/out. Hope that helps.

[@Devo491]

You're a f'n artiste, mate!

[@VinayMudhiraj1998]

Nice job! Good consistency.👌

[@chapelroadfarms1652]

Terrifying! I nervously waited for the pipe to POP the entire time.

[@lass-inangeles7564]

Like magic, wow! So clever. Also the guy who fills with water and freezes the pipe, ha ha! Your minds are so creative. I have to fix multiple dents in a thin aluminum cover for very expensive speakers ($3200!!) and the covers are slightly domed. I'm doomed with the dome! No clue how to do this. I cannot compromise the paint job and any nick will show up on that white. Any ideas folks?

[@h3aDmAsTeR]

You can also tap it lightly around the dents with a hammer, and it will come out easily. Protection is a good idea too, eyes specially

[@davidclark5138]

Super talented

[@turbulence8638]

Excellent! Would this work for a copper pipe ?

[@dakotanewman4443]

You can still get kits like that on Ebay.

[@MrMarkbad]

where...

[@kauaisfinest14]

Dakota Newman Motorsport and all over the web sells them too 🤣

[@Michael666CA]

www.ebay.com/itm/2-stroke-exhaust-pipe-repair-kit-1-KTM-SX-SXS-50-65-85-dent-removal-blow-out/201948903192?hash=item2f0517b718%3Ag%3AuN4AAOSwLU5alc47&LH_BIN=1

[@BikesGarage]

Amazing work thanks for sharing this video ❤️

[@fishboat6244]

Nice job! Thanks for posting.

[@zackk695]

Hey, forgot to show us the before and after. I found out these pipes are real thin 20 gauge metal. If they went with a 14 or 16 gauge it prevent a lot of dents. The added half pound will not affect a riders speed. It won’t be the difference in first place of 2nd place for sure

[@Wyl94]

if you try to polish it, does it come back as before?

[@DM-qp7do]

Everything is just easier on a 2 stroke baby!!! BINGDADADLINGBABAING!!!

[@thefreedomguyuk]

Bridged sparkers and seized pistons aside.... 😉

[@zoranpetrovic9969]

Au Master I am left speechless, Gift !!!

[@Hndsomehubby]

This fellas not worried, science says it’s dangerous but in real life it’s no prob.

[@thomasmcdougall8059]

What I do is get a pressure washer. Weld one and preferably the larger end then make a clamp to fit around the pressure washer nozel inside the other end weld that up then blast in the water it pushes most of the dings out to near perfect

[@Wombels1987]

great mate how much does it normally cost of you took to a shop to do

[@troym1849]

67 that gave it thumbs down think the dents make their bikes look good

[@markkus1134]

Pretty cool always wondered how they get the dents out! Should be wearing safety glasses

[@damianrodriguez2670]

Think heating a chrome polished grill guard will pop out the dents as well I hit a pole

[@maryhash7588]

Excellent. does it work with steel tubes frame dents? i mean MX frames , dents we often find under the engine cradle?

[@PhillipMikeHunt]

If you pump the tyres to about 130psi these dents normally pop straight out.

[@itametalengenharia207]

Muito bom. Qual pressão de gás foi usada dentro?

[@GIGABACHI]

150psi.

[@Naedanger253]

I wonder if the psi Inside increased with the heat also, good job on the pipe, looks braw 👍

[@PiefacePete46]

Bernard mathews : The PSI on the inside would only increase with the heat if there is a non-return valve in the compressed air supply.

[@projectbumblejeep4190]

could you use rubber expansion plugs (freeze out plugs) as long as the dent wasn't too close to the plug?

[@fredted1611]

That's how I made mine small rubber freeze plus that I put a schrader valve in and a bigger rubber freeze plug up front. You do have to safety wire the front one in.

[@GearHeadBoris]

Nice job. Looks like new.

[@fredbert6244]

I have a vespa px... Recently put a 'sterling' look a like on... It looks well made not cheap.. Think is someone said it could seize my engine?? Now i wont ride it........ Is this correct??

[@jessejohnson159]

Great name for you business!

[@stefanandersson5604]

Great jobb! Thanks fore shareing! ❤️👍

[@zadkmb]

2ストのチャンバーって、中に溜まったカーボンにガソリンが染み込んでる。 そこに圧をかけてバーナーで炙ると中のガソリンが気化し、チャンバーの中は圧縮された混合気で満たされる。 炙りすぎてチャンバーに小さな穴が空いた瞬間、中の圧縮された混合気に点火し、チャンバーはものの見事に爆発破裂する。 実際に爆発したの見た事あるから、この動画を見て間違っても真似しちゃいけない。

[@x-105strikefreedom]

can you also do that on a stock 2 stroke street bike pipe? just wondering....

[@cppctek]

Any idea how to get a dent out a small copper radiator tank

[@josepeixoto3384]

damm... don't go feel the pipe with your hand to see if its already smooth enough, i almost did from here lol man i got to edit,to say this: *GET* a deep socket and a ratchet/drill ---air or elec.--to do and undo those NUTS paleeeease!!! And what an excellent video...Thanks

[@gregmunzer5901]

what psi ya got in there when doing the work as surle u woodnt wanna put 100 psi blow the welds appart

[@fostagrande8916]

Great idea... Greetings from Germany....

[@PassanesiCanal]

just amazing!

[@Liam-nt8hn]

Searched this up to fix the exhuast on my frs, didnt realize they'd have an frs in the background

[@ineedtires7148]

Did you fix it?

[@Liam-nt8hn]

@@ineedtires7148 ya but I didnt need to go as expensive in this video, lot less work

[@APlifenow]

got to love metal memory

[@bigironjakesd619]

What tip did you use? Is that a rose bud tip on the torch???

[@rogerkaczmarek6471]

excellent work

[@dadyo63]

Wow so fast,nice work

[@jackrathert459]

Awesomeness 👍💪✅ Thank You 👍

[@caseyjoe4827]

Where could I buy some clamps like that

[@highlightzilla9581]

How much to fix mine I can't find anyone around me that will do it or know how

[@skrame01]

How many Micks are there down under?

[@johnlocatelli1768]

Great tip thanks for sharing.

[@EddiNice]

What about the geometry? If the whole pipe is twisted and it does not fit well on the cylinder?

[@Kuhtlass]

That's a 2 stroke pipe. They are bent like that to keep the gas/air mixture from escaping due to no valves.

[@patdohrety2940]

dents in an expansion chamber don't affect performance. It's purely a cosmetic thing.

[@Smarterthanyou-mthrfkr]

Nice job mate

[@endurosurfer5716]

How much air pressure do you put in the pipe?

[@raymondsteele4142]

Nice . I think i will make up some clamps and start doing a few jobs like this .

[@HorsepowerHouse]

I invented a pipe repair kit that even had a pressure gauge on it and everything. My machinist passed away - and I can no longer find anyone to make the device for a good price. So, now it just sits on the shelf. (over 100 sold) :(

[@snowrider4495]

I use the hydro method and it puts the pipe back in mostly original shape and pops out some of the dent then I use this method to pop out the dent!

[@mr.holiday7676]

Do you think you can do this to a aluminum alloy gas tank

[@jasonvalenzuela6306]

Probably a dumb question but can this be done while it’s on the bike?

[@eduardosampoia5480]

very dumb question indeed

[@theoriginalmungaman]

How do you restore the nickel finish destroyed by the heat?

[@SavageSaiTheBloxStar]

Polishing stones

[@jasonstalder5208]

its usually raw steel, stainless or titanium. so you polish it?

[@theoriginalmungaman]

My FMF is nickel plated?

[@SavageSaiTheBloxStar]

theoriginalmungaman doubt it unless it’s like the actual can not the tubes.

[@theoriginalmungaman]

Savage Sai FMF fatty nickel, look it up.

[@gasgas3006]

What are the clamps called? I need to try find one

[@rendsburger2802]

Bei den Lacktöpfen und Spraydosen auf der Werkbank in Verbindung mit dem Brenner wird mir richtig warm ums Schlosserherz..

[@chopperhehehe]

I only use 20 psi still does the job. Not so loud if you over heat and pipe bursts not so load a bang. Glasses should of been covering your eyes not to of your head lol 👍👍👍😜🏴󠁧󠁢󠁳󠁣󠁴󠁿🦄🎣😁✌️