Oh my God! That's absolutely brilliant, great work...

nice to see...im up to fixing my crank on an old yamaha dt 125 -1984....awsome video...thanks

Spectacular work. To have all the tools and supplies to do this kind of repair is awesome. You're an artist and gifted machinist!

A real engineer at work ,great skills 👍

@PaulXchannel

4 жыл бұрын

Thanks

Your work is incredible man! Love the videos

@PaulXchannel

3 жыл бұрын

Thanks

Great way of doing it. Can’t wait for the day I get a lath and milling machine. Happy days

@PaulXchannel

4 жыл бұрын

Thanks

Perfect workmanship. The best of the best.

Hi Paul X, what is the acceptable runout for the DT125 crankshaft? If I'm not mistaken, I saw about 0.03mm when you were done. I'm about to try and align a crankshaft myself. Thanks

@PaulXchannel

3 жыл бұрын

Optimum deviation on undamaged crankshaft up to 0.02

Both sides of crankcsse beaten to death and intelligently and skilfully saved at last.Good job.

@PaulXchannel

4 жыл бұрын

Thanks.

Interesting technique. I used to turn back to clean steel and build it up with a type of rod called “ machineoweld” as I recall, then cut new threads. This looks strong and no heat affected zone.

@PaulXchannel

4 жыл бұрын

Thanks

I had a similar problem on a Norton International crank, but luckily it wasn't quite as bad and i could turn back to round and pick up the original thread again. Customer was virtually in tears (of joy) when i fixed it.

@PaulXchannel

4 жыл бұрын

Super .

Increible,👍👍 perfecto el mecanizado

I lost my temper once with a cr 125 crank, when I was younger and didn’t know better 😂. Would have loved to have known you at the time. I had to buy a new crank.

@PaulXchannel

4 жыл бұрын

You will use it in the future.

@ratv4885

4 жыл бұрын

@@PaulXchannel were your location

Genialna robota!

Damn bro...your talent knows no bounds ... never seen anything like this 😍🔝

@PaulXchannel

3 жыл бұрын

Thanks for watching

I normally weld it then lathe and cut the thread . saves all the other steps and crank strength isn't compromised . interesting video anyways .

@PaulXchannel

4 жыл бұрын

Thanks

@dennisford2000

3 жыл бұрын

Heat affects the high carbon steel. I would have his repair before yours

I wish i have toys like yours!Good job!

@PaulXchannel

4 жыл бұрын

Thanks

Excelente...!!! Gracias. Thanks.

Excellent job. Thank u.

Love your balancing tool.. 👍👍

just one word!! Wonderful..thx

@PaulXchannel

4 жыл бұрын

Thanks

Nicely done Man!

@PaulXchannel

4 жыл бұрын

Thanks

Great mechanical engineering👍. I like it and inspiring

@PaulXchannel

4 жыл бұрын

Thanks.

It's great to see this ingenious repair to an otherwise irreparable, rare and expensive crankshaft! Your beautifully devised, engineered and installed components ensure that this crankshaft can now return the bike to the road. As a former motorcycle mechanic and motorcycle workshop owner I respect your high standards of workmanship and very well equipped workshop.

@PaulXchannel

4 жыл бұрын

Thanks

Definitely thinking outside of the box. Great way to repair a hard to find crank.

@PaulXchannel

4 жыл бұрын

Thanks.

Cara vc é bom demais....que trabalho excelente parabéns pelo seu conhecimento. E profissionalismo...

Lol, I always thought there was a high precision method used in trueing a crank, glad to see the old faithful hammer is that method :)

@mangkoes

4 жыл бұрын

Same here.. 🤣

@pabloloureiroanon3755

3 жыл бұрын

Olpol

@pabloloureiroanon3755

3 жыл бұрын

Looolollolooo

@pabloloureiroanon3755

3 жыл бұрын

@@mangkoes lllllllllll9lñlllllñl

Great vid!

Good job. Lot of work though for a relatively cheap bike.

@PaulXchannel

4 жыл бұрын

Thanks. It was a help for beginning moto biker.

Is there anyway I could have you repair a crank I have that had the flywheel side threads snap off?

Super impressed

Nice work, thank,s

Great job 👍

You are simply great! The effort and patience you put on is simply amazing! I wish i had somebody like you back in my country!

@PaulXchannel

4 жыл бұрын

Thanks

This is great job

Where did you find the keyway mill ?

How much force is such a Dowell pin capable of withstanding? Is it possible to press fit 2 50cc crackshafts together and lock them in place using a 4mm Dowell? I am building a twin and this looks like a neath way of connecting the 2. I want to 'hide' the Dowell under one of the bearings for added structure..

Центровка сделана не убедительно :( Вы измеряете круглость цапф и радиальное биение подшипников а не соосность поверхностей цапф.

Trabalho magnífico de profissional inteligente!

dont understand why many trueing a crank with indicators direkt over the resting point, they need to be as far away as possible from eachother, extremely wrong can look good on the indicators

@caerleon87

4 жыл бұрын

Exactly correct..

@normiewho

4 жыл бұрын

Not only that, all he had to do is re-cut the threads, and you can do that without taking the crank apart.

@danielberei3021

4 жыл бұрын

Normiewho why not make things complicated it on can. Most of the audience won't know anyway...

@rztrzt

3 жыл бұрын

Yes deflection will be at minimum over resting point. To get the greatest distance it would be best to rest at the outer edges of the crank and measure at bearing location, that will give you the maximum deflection distance.

Super , good job

Looks good. But couple of questions, 1) did you end up heat treating those threaded rods and nuts? 2) why didn’t your cut off those damaged threaded and drill a shallow centre hole and weld new threaded rod and chase with a die? Would that’ve been easier than pressing and pinning? And wouldn’t have had to cut a key way?

@PaulXchannel

4 жыл бұрын

Hi thanks. Material of new thread pins and nuts - 42crmo4+qt - hardened steel. Welding of engine parts is not a good way.

@cycletechperformance9581

3 жыл бұрын

@@PaulXchannel I like these spec's. Was concerned of otherwise non heat treated materials here.

how Nweton meter your crank saf？

Tailstock needs aligning

Love your work. The whole deal from an engineering side and technical expertise of the presentation. Music was terrific

@PaulXchannel

4 жыл бұрын

Thanks

@wilhelmushoffmann8054

3 жыл бұрын

@@PaulXchannel i agree, only I couldnt stand the music

Nise job.👌

Güzel işçilik tebrik ederim

Figuring in shop time it's cheaper to buy a new crank but nice repair work.

@PaulXchannel

3 жыл бұрын

Thanks

VERY VERY GOOD !!!

@PaulXchannel

4 жыл бұрын

Thanks

How much would a job like this cost? If you would do it or if someone else would i just figured i ask becasue you have an idea of the work that goes into doing this

Quá hay luôn admin ơi 😂

@PaulXchannel

4 жыл бұрын

Thanks .

Mr Paul have you a job , that change big pen litle bit advanced or another word stroke up ? If you ever there is video on it?

Me quito el sombrero 👌🏻👏🏻😉🇮🇨

@PaulXchannel

4 жыл бұрын

gracias

Nice work Paul but for me i prefer to true up a crank between centres so would need to machine the od of the material to make sure its concentric to the centre hole....just a small thing apart from that found your video interesting

@PaulXchannel

4 жыл бұрын

Thank you very much. This is one way of repairing crankshaft. I will do a different way to repair in future videos.

@chrisstephens6673

4 жыл бұрын

I might have been tempted to omit the centre drilling altogether so as to not confuse the next person truing up the shaft.

Impecável 👌

Zastanawia mnie pomiar bicia w mieiscu podparcia wału?nie sprawdzałem ale wydaje się że zawsze wyjdzie na zero?

Hi. Nice job Paul. I like the safe side with 2 locking pins. Thru running of both bearing areas is the difficult part of the work. 👍

@PaulXchannel

4 жыл бұрын

Thanks

Excelente trabalho de recuperação e o custo de horas e ferramental compensa ?

@PaulXchannel

4 жыл бұрын

Thanks. Work is my hobby.

I'm missing like the middle threads on a crank, had to cut the nut off. I'm thinking I'm going to try and weld onto it and recut the threads. It will either work or it will still be unusable

Very Nice!

@PaulXchannel

4 жыл бұрын

Thanks

Bardzo dobra robota👍

@PaulXchannel

4 жыл бұрын

Thanks

Professional work! I'd never seen a crankshaft holder for balance like yours. Where in can buy one?

@PaulXchannel

4 жыл бұрын

Thanks. The holder is homemade.

@wilsonocasio8370

4 жыл бұрын

@@PaulXchannel excellent craftmanship 💪💪

Would you explain, why should you centering crank shaft in three phase?

@FIDDYgg

2 жыл бұрын

Easier to make large adjustments with less pin engagement, those pins are tight... As you press the halves together, adjusting becomes more difficult. Best to get it close first, and only need minor adjustments once fully pressed.

good job

bravo l'artiste

@PaulXchannel

4 жыл бұрын

Thanks

Great content man, but it appears your mill and lathe both need some PM. The runout and lack of precision of those machines blows my mind

Nice Good Information

@PaulXchannel

4 жыл бұрын

Thanks

Precise execution possible. It takes a lot of experience. Congratulation :).

@PaulXchannel

4 жыл бұрын

Thanks.

I think the coast of the repair is =or+ than new crankshaft It’s great job .

@PaulXchannel

4 жыл бұрын

Thanks

Loved it 😎

@PaulXchannel

4 жыл бұрын

Ok

I learned to do this when I was in school 😀

@donbrashsux

4 жыл бұрын

Wow that’s some school ..where’s that

@sergueimac7294

4 жыл бұрын

@@donbrashsux it was in 1976 in France

@otaku103

4 жыл бұрын

Cool 🖒

Where you located at?

U have petrol or oil in your vains... damn nice this... u are a brother from a nother mother to me😘

How many tons of pressure does it take to press out the crankshaft pin?

@PaulXchannel

3 жыл бұрын

I do not know. My press is up to 50 tons.

j adore ce boulot c est ca que je veux faire

seriously respect

@PaulXchannel

3 жыл бұрын

Thanks

Send to from Vietnam

Good work... But purchasing new crank shaft will be more economical.

@PaulXchannel

4 жыл бұрын

Thanks but repairing this crankshaft was not expensive.

Não seria mais fácil tornear um novo?

nice work

@PaulXchannel

4 жыл бұрын

Thanks

Thanks! Nice job, weird, but nice job anyway!

How much

Did not look centered to me in the end

I have to say I wouldn't leave the house except to go to the garage to work with these wonderful machines at this point there would be no reason to leave the garage! sorry honey...

Great job ! Would it be possible to send you my crankshafts to refurbish them ?

Do you do repairs for people?

Nice work, in a way. But I definitly do not agree on the pins!! You could have it more tight and use Loctite...

@PaulXchannel

4 жыл бұрын

The hexagon nut lifts the threaded pin without the locking pin. The Loctite have don't so power. It work well.

Were your location

WTF mind blown 🤯

In my opinion this kind of overhauling means an immense weakening of the crankshaft. Hopefully everything (still works well.

@PaulXchannel

4 жыл бұрын

Of course there is weakening of the crankshaft but work well.

Why not make inner thread into the crankshaft?

How much do you charge and how can I get in contact with you

Makia mis respetos

Verry God 👍👍

merci bouqeau

had to mute the sound, the high notes on the music hurt my ears, excellent vid tho

Can you show me how to repair crankshaft bearing seat at crankcase

@PaulXchannel

4 жыл бұрын

Yes . In future videos. Thanks.

May i have you permission to put a certain of this video om tiktok

Is there any way to repair connecting big end pin hole.

@PaulXchannel

4 жыл бұрын

Yes, it is possible.

@johnroyte4213

4 жыл бұрын

@@PaulXchannel ..do you have any videos of that

Good sir

@PaulXchannel

4 жыл бұрын

Thanks