Building a motorcycle frame | Part. 2

In this video I show you the construction of a motorcycle frame, the original was so badly damaged that this had to be completely rebuilt.
You can find the first part here: • Building a motorcycle ...
Also in this video I use mainly standard tools that should be found in most metal workshops.
The frame is built from chromo steel ( 25CrMo4 )
This is not a complete motorcycle project, but I show you the interesting fabrication steps.
Have fun watching.
krtframework.com​
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/ krtframework

[@ar_pe4012]

I hope this masterpiece only gets a clear coat, an engine and two wheels. So that it is presented properly!

[@SuperCartmenez]

This is so enjoyable and satisfying to watch. You Sir are a true master of your profession!

[@simon2knine]

Amazing workmanship...I am so glad that you choose not to add booming music..

[@stevehammel2939]

The frame videos were excellent, having the right tools for the job is half the battle... beautiful craftsmanship!

[@jimmycav369]

Beautiful frame. It would look great with just a clear coat for rust protection and keep all the welds and heat affected zones visible

[@paultwood5170]

Absolute pleasure watching you work ,,fantastic welding

[@SEILLC]

Pressurizing the frame with shielding gas is a damn cool trick. I've never seen that done before.

[@jung5383]

I swear this is the only video on KZbin that I can fvcking smell and I love it

[@gnemois]

Wow! Just beautiful! Looking forward to see the complete bike Sir!

[@RandomMass56905]

God, I want to learn how to weld like that.

[@mauriceclemens3286]

Amazing craftsmanship. Should be considered an art form.

[@mckreations5160]

Craftsmanship, Coordination, Precision, Patience, Focus and another level of Zen thru working meditation. That is finely done boarderline OCD actions by someone with skills that have been honed to pun point accuracy! Well done sir! With that kind of attention i would venture to guess, if you choose to apply such, your wife/partner is a very happy individual!!👍😉

[@erictaunton2183]

Love your welding and your tube fitting just fantastic love it thanks

[@andhitriyanto3129]

Clear, .. Silent.. So smooth !!

[@jinkang2913]

wow, that's a work of art!

[@rixogtr]

purged steel yes please !! great job, never seen anybody purging their steel work, well done mate

[@KRTframework]

I would not purge normal steel either, but with 25CrMo4 I do.

[@rixogtr]

@@KRTframework ah so that's why the bead looks so shiny

[@rixogtr]

you have a dream workshop mate

[@TimBiagi]

Beautiful work, pure art

[@KRTframework]

Thank you

[@jasonH5997]

Beautiful welding

[@gamiensrule]

The fact that you don't use a laser cutter is hella impressive.

[@markhills3922]

You sir are a Master Craftsman. You make Tig welding look so easy, almost like sewing fabric, when there is nothing easy about it. Can I ask what filler rod you are using for the CrMO? Is it brass/nickel? I agree with some others.....don't paint that frame. Clear coat it so that wonderful workmanship is always on display!

[@sddiymakeitworthit7512]

Waiting for that excellent job 👨 thanks 🙏 love 💕 it

[@KRTframework]

Thanks for watching ✌️

[@sayfmateen5754]

Which type of welding you are using.

[@DK-Design]

that would be TIG with back gassing

[@majestix_adv]

Have you ever tried to do a titanium frame? Whats your opinion?

[@sethlewis705]

I wish people when they are building a frame.or installing a hardtail section.would tell us the rake on the neck.and how the set the desired rake

[@purgzz2]

Um Salve do Brasil !!

[@danielhristov6175]

Can you make one from stainless steel? If yes, how much do you charge?

[@olivierperu7119]

Great job again and again !!!!! Thank you.

[@KRTframework]

Thanks for watching :)

[@greybeard3759]

Watched your videos and promptly sold my welders!! Hell, you had me at the frame jig. Absolutely superb. What material is this frame that you're back purging?

[@swapnilmankame]

Material : 25CrMo4

[@greybeard3759]

@@swapnilmankame Thank you!

[@kevinlewis9151]

If I was going through this much trouble and precision, I would go ahead and seal it all up and pressureize it and use the frame for gas storage.

[@dukenuke2690]

pure art ! love the lofi bgm :D

[@johnscott1153]

Art and Perfection roled into one.

[@KRTframework]

Thank you ✌️

[@BACSITUANTU]

is that carbon steel flame ? 1:27

[@hilabang666]

I like how you do your work. Nice and clean, take time for preparation, cut and grind your tubes for perfect fit. But i have a question...why are you seeling the edges? 25CrMo4 is a carbonsteel not a stainless🤔 Do you use formation gas? Me myself don't use it with this steel and my workplace is KTM R&D. My daily job is to build Prototyp main and rear frames with the exact same steel. Most of the time I use my mag/mig welder with a G6 wire and C18 as my shielding gas. When i tig weld, i use the same rod, 99.9 argon but no formation gas for the inner tube. Buy the way, your work A+

[@ronaldsandjaja9520]

Better than looking the beach.

[@chamimsttw2290]

what the gas did you add into frame before full welded?

[@FredKustomGarage]

Magnifique soudure 👍 Le cadre poutre que j'ai, un Martin est soudo-brasé, je suppose que le métal d'apport est du 25cd4s aussi. C'est pour monter quel moteur dans ce cadre? Magnificent welding 👍 The beam frame I have, a Martin is brazed, I guess the filler metal is 25cd4s too. Which motor is it to mount in this frame?

[@KRTframework]

Ther frame is for a Honda 750 ;)

[@ChristopherJones16]

I'm a noob with welding.. was that a different kind of welder you used to do tack the plates down and then you used another kind of welder to weld?I saw you used gas to fill the frame up before welding. Was the first welder a MIG and the second a TIG?

[@110WeldnSteelworx]

I see there hasn't been much in the way of replies to your post. NOTICE -I am not this person. Nor am I skilled to the level of the master you see before you. That being said, I can try to help with a few of your questions.

[@110WeldnSteelworx]

Tig - tungsten inert gas welding gtaw. From what I could see he uses the same TIG welding method for tacking as well as welding. TIG is a very detailed process. SUMMARY, shared similar traits with soldering. Filler metal rod in one hand torch in the other. Uses varying electrodes/filler metal rods based on material to be welded. Much better heat control and precision welds. Welds chromoly stainless aluminum mild steel and most all others. Simply research electrode and shielding gas requirements for material as well as base settings (reference only, adjust accordingly) for your specific welding machine and style. Filling the vessel with shielding gas has many advantages worth research.

[@KRTframework]

Thanks Karis, it is all right

[@DarbuKhan]

Nice job dude ! But I wonder why are you blowing gas in your carbon steel pipes (Argon or Nitrogen ?) ? You are indeed welding carbon steel ? Crmo does needs gas ?

[@KRTframework]

With the higher chromium content, I prefer to shape, and the root is simply cleaner and runs better, especially with thin-walled tubes.

[@JK-hw1bb]

Outstanding work...🏁 May i ask what filler rod you are using on this work?

[@ChristopherJones16]

Im guessing frames are made out of steel. Are their frames made out of aluminum? Or is that just bicycles that are made out of aluminum? How thick does the steel/aluminum need to be for a motorcycle and how thick are bicycles? Reason I ask is I wanted to convert a bicycle to a moped by adding a motor to it like many are doing now.. but I ran into a guy who said the bike frames are not strong enough to handle vibrations and he had to reinforce his frame. So Im trying to figure out how much it would cost me to buy the steel/aluminum to have a frame built or for me to try to build. I want to make one of those Micargi Vancouver streatch cruiser bicycle frames.

[@110WeldnSteelworx]

Frames are made of many different materials. Mountain bikes nowadays mostly aluminum. My old school GT tour 2 bicycle -chromoly. 1912 bianchi 1 cylinder bicycle - mild steel. The material choice and associated strengths / weaknesses are calculated and determined mostly on the requirements of the bicycle. Is weight going to be a factor? Will the bike go 10 or 100 mph / KPH? The more work (usage/abuse) you ask of the item (bicycle) , the more you will have to consider material to be used and then gauge or thickness of the material Plus any other known / unknown factors. A show bike that isn't going to be on the streets or off-road speaks for itself when it comes to materials needed. A trail bicycle will be built OEM strong and have associated reinforcements where necessary as well as a visibley expressed weight limit/ Max load..... Are you the only rider, is it just a metro cruiser, do you have rough terrain, passengers, is it for long distance or short springs etc.. you feel me so far ? .....Feel free to correct me or educate me if needed..... Years ago most mild steel tubing had a seam in it and still does to this day as well as other materials used for tubing or pipe. You can see this seem and feel it on the inside of the material. Yes there is also a difference between tubing and pipe do your research diligently. Most motorcycles in my generation used what's called d o m (drawn over mandrel) or mechanical steel tubing.. Mainly it's seamless... thus better attributes. Alloys like chromoly have their own attributes do your research again. You might find a titanium application if you look hard enough. No matter what flavor of the material honestly thicker walls heavier duty pieces Overkill is the way to go rather than risk it. Gussets AKA little triangles and such at the corners and joints as well as using solid material inserts or external cases are prime methods to reinforce weak intersections and points. You could create exoskeletons if you thought you needed them. Seemed tubes will work if you reinforce and brace your weak points and or double down on Wall thickness or material thickness. Don't put your seam in a position for shearing splitting torsional stress etc. You might possibly ask your local Fab shop / steel supplier if they have a recommendation for material. They will teach you a little about wall thickness and or schedules. Anybody can mig weld some old frames together and make it work with a motor and controls, and it's a fun way to learn a lot. Perhaps not safely though and definitely definitely not going to be at the level of the master above. Summary -plan, work, replan ,rework, finalize and detail. decide how dedicated you want to be!!! Decide the general requirements of the bicycle, use that to determine the material you would like to use, the material will help you determine the welding method, then if possible CAD or graph paper& pencil to create approximate scale drawings of the frame from as many perspectives as you want(this *may* help with angle starting points such as rake). Highly recommend building or buying a solid frame jig. Create and use Sturdy construction paper cut outs and or templates before using real material when possible.Create a cut list parts list and order of operations.

[@110WeldnSteelworx]

I have found in my little experience that the creation will tell me how it wants to go together. Some things just don't work as planned or plans change or ideas shift so keep your mind open be receptive to the idea that this creation may have a plan of its own. Don't settle for less than your best also understand that you won't achieve the same outcome as anybody else. Oh and measure twice cut once very important

[@SimonMgisha]

Brother were you can get that machine.

[@jeanettewest]

Looks like you're set up for Ti with all the purging.

[@KRTframework]

Ti is something that will come in the future, I am already planning a project.

[@jeanettewest]

@@KRTframework I will subscribe then. I think a great build would be a traditionally "heavy" bike, like a large displacement Harley, then duplicate a simple frame in Ti, so no-one knows, and drop anything unessential for street-legal operation. That would be a monster. :)

[@jakubstanko2211]

is this frame are maded from titanium ? I've see is You filler by argon interiors of profile

[@KRTframework]

now, it is 25CroMo4

[@gary7684]

Beautiful work, nice welding. Egli style frame?

[@KRTframework]

Yes it is a Egli Replica, ( the frame i have here is in a really bad condition so i build a new one )

[@gary7684]

@@KRTframework 👍

[@kaniabi7720]

Good job

[@jorgseifert4712]

Nice work, as always. May i ask you a question: how do you pass german "Hauptuntersuchung" with a self made frame?

[@dcsynklare]

I guess a show bike or a bike for another country. TÜV makes a problem just for different handlebar, i cant imagine how they react to this!

[@KRTframework]

The frame is for a race bike from the 90s ;)

[@tomdangerfield1532]

Amazing work!! How do you remove the scale from the metal before welding? Did you use one of those stripping discs on the grinder?

[@KRTframework]

It is a special disc for paint and rust removal, which also works very well for descaling.

[@JohnAdams-xc5yk]

The tubing and steel plate are cold rolled no scale

[@yogeshnaik9276]

Good report

[@davidvanbrunt4233]

Awesome 👍

[@alaindeloge7176]

Awesome!

[@jbuckley2546]

Excellent, as per.

[@syriusgojiria9116]

that's art !

[@andreasa213]

Nice Welding.

[@KRTframework]

Thanks

[@stephanebucari8800]

magnifique boulot

[@Pushyhog]

titanium? huh? look like with tape an hose.

[@riffraffchoppers]

What the hell kinda frame is that?

[@patrikkagstrom2393]

SSAB Swedish steel 🇸🇪🇸🇪🇸🇪👍

[@bimotasb6r658]

top

[@zardportugal]

TOP +

[@chopper_1987_]

pro

[@dipling.pitzler7650]

And the original was an EGLI frame ? Then there would be no other choice than to make it precise ! Lol

[@KRTframework]

the original EGLI frame I have here is unfortunately completely destroyed, and no longer salvageable, hence the new construction.

[@donaldelder5834]

Watching you work is so therapeutic

[@panda007]

Agreed. The artisanship and precision is inspiring.

[@tireballastserviceofflorid7771]

Watching anybody work but myself is therapeutic.

[@garyhuston]

Your work is immaculate, so much more goes into this than is shown on the video, respect…

[@KRTframework]

Thank you, yes, unfortunately you can not capture everything on the camera, but I try as best I can.

[@СашСавар-ф5д]

@@KRTframework What metal do you use for the motorcycle frame?

[@remzi.öztürk]

@@СашСавар-ф5д See description.

[@tigertim20]

great videos. I enjoy the minimalist approach - no screamy music, no egotistical guy blabbering the whole time, just artwork and skill that speaks for itself. brilliant!

[@kiralight2929]

Exactly. It's perfect.

[@josecarlospoggian149]

Very true indeed!👏👏👏👏👏👏

[@kingjamezo4583]

I was at dinner with mates, and I got notification from youtube of your new video. Sorry mate, gotta go home, important stuff. And sit here all by myself, watched every second of it and loved it.

[@KRTframework]

Thanks you for watching it

[@kingjamezo4583]

@@KRTframework thank YOU for making it!!!

[@AubMar]

Fantastic Workmanship, a pleasure to watch and a much better frame than the original - super camera work too and story boarding, not easy to combine all these skills - The only thing I would say is that you make it look so easy but I know it absolutely is not, even going to the trouble of back-purging all the joints. Thank you very much for sharing your talents and such an inspiring demonstration of what can be done with a limited amount of tools - pure brilliance!

[@KRTframework]

Thank you again !

[@Ezequiel-ps6bv]

Se extrañan los videos de este canal,😢 alguien sabe que paso ???

[@thestreets5206]

Just clear coat it afterwards, do not cover that awesome workmanship with paint ☝👍👍👍

[@kc8mwt]

im at a loss of words... your work would take weeks to explain to a person. thank you for the video- - - its truly inspiring.

[@chrislee7817]

Great fixtures. You make it look very easy and it isn't. I do some frame modifications for my Supermono projects and getting tube gaps to disappear was a pain. 👍

[@lemoinexavier]

I like the silence when you're welding...

[@obiterdictum3021]

me want frame! btw the link doesnt work. =-

[@allanmoore4794]

I would like to know what wall thickness and DIA of tubing you use.

[@richiebainbridge2608]

Workmanship at it’s finest. Thanks.

[@jamiepalmernz]

Absolute magic and an inspiration!

[@karstenschulz7245]

Moin Marvin, sag mal muss man den Rahmen mit Gas fluten damit er sich nicht verzieht ? Sehr Lehrreich das ganze , Top !

[@KRTframework]

Hey Karsten, Geht hier nicht um den Verzug, sondern darum das kein Sauerstoff an die Rückseite der Schweißnaht kommen soll, dadurch wird die Wurzel der Schweißnaht besser ausgebildet, und bei Edelstahl z.b. eine Oxidation verhindert. Muss man nicht zwingend bei jedem Grundwerkstoff machen, aber da ich hier 25CrMo4 verwendet habe, und dieser einen höheren Chrom-Anteil hat, habe ich das hier angewendet. Grüße Marvin

[@vovanm7174]

I understand argon from both sides, and aluminum tape, super!!!!!

[@Michael-je6yf]

it's a good thing that you can build your own motorcycle and drive it without problems cuz in my country if i do this i go to jail for 5 years minimum and my whole items (that were supposed to be used in creating the vehicle are confiscated and the vehicle)

[@sethlewis705]

I wish people when they are building a frame.or installing a hardtail section.would tell us the rake on the neck.and how the set the desired rake

[@kc8mwt]

i wonder what the 109 thumbs down are thinking..... ( how is he going to make a pizza with that tiny oven???)

[@avevieira7905]

Wow that is amazing teach me how to do welding and Bill friends but that is beautiful

[@anangirawan4990]

Hello ..what the gas do you used...purite argon ?thanks me from indonesia

[@Loga_JZ]

Я один прочёл это как "Билдинг моторкукле фраме" ?

[@fassy72]

Wow that's a awesome build. Remembers me on a Egli Frame back in the days. :-)

[@KRTframework]

It is a EGLI Replica ;)

[@waste_disposal1066]

I wonder if this video is really made for advertising your welding skills

[@dap4647]

mieć dwie lewe ręce w tym przypadku robi różnice

[@dcale15]

Why the back purge if it’s cromoly?

[@MrUltralove]

What is the reason of sealing the tubes with the tape? I've seen it on some other rollcage build video too. Great work and process btw. Pleasure to watch!

[@tomwagemans1872]

Filling the frame with argon will help create a stronger weld because there is no oxidation inside the the tube.

[@KRTframework]

Yes @Tom Wagemans, that is correct ;)

[@MrUltralove]

@@tomwagemans1872 oh thank you. I tought maybe to prevent the hollow areas getting trapped with gas to prevent explosion or something. Turned out right opposite :)

[@kombinator5621]

Also curious as to why the back purge on chromoly. Amazing work my friend, you are an inspiration! Glad I stumbled onto your channel.

[@kombinator5621]

Also, does the tape not leave a residue that you need to clean before every weld?

[@Jukebocks]

This is incredible content

[@pomdejesus8150]

what steel material are you using?

[@davidsolomon915]

Ok plz explain.... You are back purdging for mild steel? Why? Unless that frame is made from stainless?

[@KRTframework]

The frame is made of chrome moly, and this I Back purging when welding, also so that I get a neat root when welding

[@nugienazrilchannel]

Building motorcycle frame.. amazing brather..

[@canul3801]

the engine better be pretty af. if not. its a waste.

[@argentosebastian]

Excellent job. Can you tell me what kind of silver tape is that. I'm about to start welding an aluminum bicycle frame.

[@KRTframework]

its a aluminium Tape vor purging.

[@MadMotoInc]

Damn 😳

[@37splat]

I really appreciate how much thought went into your various fixtures. The fitment on your parts is amazing. Out of curiosity, what's your reasoning behind back purging? I've seen lots of roll cages built out of 4130 without back purging, but I'm sure you have a good reason and I'd love to hear it. Thanks.

[@hondaxe6781]

Hello bro nice video

[@oneman29]

Amazing finishing with a band-saw and grinders. Human CNC skills lol

[@blackdiesel4407]

Is this an elgi replica?