When I was a teen I used the spare time teens have wisely. I used to buy crate bikes that nobody knew about or had long forgotten. Jawa, CZ, Penton, Bultaco, Montesa, Ossa - and make them absolute museum pieces. New or better than new. Then make a fitted cover and my mom would embroider the logo and sew, my dad would waterproof them. Buyers came from far away and NEVER haggled on price. These machines are works of art and should be treated like precious treasures and rode into the ground like ya stole it. When you ride one and it gets the wind in your face and you and the bike become one and you find your pace, that happy place where the two of you just tick: replace THAT! When you look deep into it's paint work so rich and deep and flawless...see the sun blinding you off the chrome...You jump back on it to ride it LOTS more! It's a love affair, man. I could NEVER be happy with factory new being "good enough".
Я просто в шоке! Сколько проделано работы😐 Титановый труд. Я ремонтирую явы, посмотрев это видео, я понял что я не ремонтирую явы, я их протираю от масла! Автор просто проделал очень серьезный путь👏 Красава
Dear Mr von Stern. Thanks for sharing another extreme masterpiece of skill & mechanical beauty. There won‘t be many people on the planet who invest such a level of endurance and passion for their vintage bike. Keep up your wonderful work.
As a fabricator and welder of 30+ years I can truly appreciate the skill and craftsmanship in making these. Excellent job, I bow down to you. Beautiful pipes. In a future project I suggest tack welding your entire pipe together then filling it with a constantly replenished supply of argon (back flushing). It will give a cleaner weld on the inside and a stronger weld for resistance to metal fatigue.
I've watched every video of your jawa tuning, this work is absolutely brilliant and well done , in each detail. I'm a two stroke lover since childhood and i completely agree with what you have done. Decreasing crank weight, converting the piston port to reed valve... everything made respecting the original look of the Jawa. Very pleasant to watch till the end, i hope you make more videos for a good listening to this singer! It runs like later ari-cooled cross with many rpm and a lot of torque at low. As i expected you had issues with gearbox and clutch system, but you solved brilliantly. I've recently got a spare cylinder for my californian 250 and i was thinking to work on the cylinder, not something so radical but definetly they have good potential. Still thank you for sharing these brilliant work, have a nice road :)
About 12 years ago, I designed & built the entire exhaust system for my 1988 Jawa 500-826 500R Mk.II. I ran the numbers and deliberately made one of the headers 8cm. longer than the other, which causes the Rotax 504 engine to ease into "coming on the cam" at 6,000 RPM, fully light up between 7,000 to 9,000 RPM and rev out at 10,000 RPM. The silencer is a cut shorter 638 silencer (for the megaphone effect) with the innards of a Micron race can with added adjustable backpressure tubes (because 4 stroke singles hate straight through pipes / need backpressure). Top speed was up from the strangled stock 95 MPH to just over an indicated 115 MPH.
For man, who was born in the same country, where this bike was produced, is this project something special... Amazing work 👋👋 Always great to watch your videos
Sehr geile Arbeit Siegfried, viel Liebe zum Detail und am Ende ein perfektes Ergebnis! Habe dich heute erst entdeckt weil ich krank im Bett liege aber davon möchte ich gerne mehr sehen, mach weiter so. 👍
Εξαιρετική δουλειά, φρεντ!! Μα άξιζε τον κόπο, το μηχανάκι αυτό ειν αργοστροφο, κ λίγη δύναμη να πάρει ακόμη δεν θα του φτάνουν φρένα, αναρτήσεις, λάστιχα μετά... Μπράβο, πάντως!! ❤️
Sounds nice, a lot of work for something that might work or might not. there is so many variables in to making a 2-stroke exhaust pipe that its almost always hit or miss :D
Building my rezonator on my 60/4 S51 (with a 21mm Dellorto carb and factory 4 speed gearbox) was the single most huge powerup step of all the things I did to it (to reach a stable max speed of 100kmh)
Highly appreciated work. 👌👌👌👌👌👏👏👏👏👏👏. Happy to see this video. Please let me know if there any possibility to buy this kind of similar calculated expansion pipes of same quality.
Hut ab! Richtig schön gemacht, genau so muss das aussehen . Ist schon sehr lange ein Traum von mir einen Resoauspuff wie deinen, komplett selbst zu berechnen und zu fertigen. Hab für meine Ktm comet einen Leovince ZX Resonanzkörper mit dem Endschalldämpfer einer Zigarre verschweißt. Sieht deinem Schmuckstück ziemlich ähnlich. Respekt und Anerkennung aus Wien 😉
Hi, Mister Sieg. :) i'm just wondering do you have any plan's for tho exaust's? or even better question... would that exaust wor ok. on Jawa 350 TS 2 cyl.? I would like to make some better exaust for mine... so I would be happy if you would help me... thank you very much in front...
Impressively colossal amount of work. I made many pipes without having to consider smoothing and chrome plating so your job is way harder. I am curious how you generated your flat patterns for the sections?
Well, that’s what the CAD program spits out. You probably mean the smallest pieces which form a bow segment (as part of inlet pipe) Those have to be bow-shaped because of that…
Hey there,nice work man I love it, ❤❤ I need to contact you man, cause I want to build a pipe but I don't have the book ,is there any chance I can get a pdf file?
For initial spots I used below 10 A. For weld I used settings between 25 & 35 A. I was told professionals use higher power but well much faster, which reduces heat affected zone and results in better weld. I’m hobby welder!
I came across your video series on my fathers' phone. On his last days he was watching these video's. Begging for time to begin tuning his personal CZ250 Sport. Now that'll be up to me. However, no parts are available, only to be crafted. So that'll be a long journey. However, I also was thinking to transform it into electric powerhouse, which is more my thing and is readily available. But... Two strokes man... The memories are amazing. Racing together with my father, so that'll be first choice. You know any place where I can get old spare engines or parts for some more power?
Hi. I’m not aware of anyone selling CZ tuning or improvement parts. Some Spare parts can be found here Etovar.eu You need to be quick, they close business soon.
Thanks for the appraisal and the investment of so much of your time. Physical / mechanical constraints are similar. So, why should the content be different to corresponding Lambretta or Vespa projects.
@@Q.L.Engineering After looking, they aren't so different, it's just that I knew nothing of your motorcycle. I wrongly assumed the internals of your engine would be stronger to start with. Therefore using this hypothesis you may have done your tuning quicker and with less remedial work had studied scooter tuning ,looking at their already weak spots. I would be interested at see your cylinder timings, if it's not a secret. Lambrettas are piston ported too, Vespas as standard are rotary valve, though both as standard are single cylinder and often get converted to reed valve. Their are off the shelf twin cylinder Lambretta engines now readily available and more than a few twin cylinder Vespa's have been made. By the way ,love the look of your handlebars and Speedo, very Vespa like 😉
@@Q.L.Engineering Thank you for your quick reply re: secrets , very true. The way I see it no matter what you ride, if you love two stroke tuning we all have the same love. Many Scooterists also own motorcycles too, by the way
@@Q.L.Engineering this is a nice example of Lambretta tuning , though with higher port timings. 👇 th-cam.com/video/cdrzuDRD0co/w-d-xo.html And these 👇 th-cam.com/video/U__v7XnAPj4/w-d-xo.html th-cam.com/video/Z8YXb1mNc9U/w-d-xo.html
Super impressed with your work, well done. You've managed to make a 2 wheeled, 2 stroke, Czech snow plough, into a very frisky lil sleeper . But can you get it to still pop and idle all on its own long enough to don the skid lid and gloves, or wait at a T long enough for traffic to pass without bleeping the throttle? I mean no disrespect, you engineering skills and knowledge are well above my own. I just ask because I imagine that the weight and enertia of that over engineered crank in the original engine went a long way toward producing the famous low down 'tractor torque', and endlessly reliable slow idle that made them so popular....I do understand that in pursuit of power, it is simply impossible to both have and eat cake.....but just curious about the idling aspect now you've shifted so far away from the agricultural intent of the original bulletproof Czech design. Thanks for sharing your great work, I have a box full of complete first iteration 350 Californian and other bits including czech made electronic ignition...you've inspired me to get back on the spanners and get her terrorizing the neighborhood and turning the air blue with 2 stroke smoke and fist shaking abuse like she's meant to...😀
Not sure what your question is, but yes, the farmers engine seems to cope with power in general after improving clutch, primary drive, gearbox (to be continued) and so on and so on. The drive system would need a little more damping like on modern engines. That would help…
Absolut liebevolle Arbeit bis ins Detail, Hut ab! Mich würde kurz interessieren, für welchen Drehzahlbereich (ca.) der Auspuff für die 353-er gedacht ist? Bei den normalen (ungetunten) 352, 353, 354, 360, ... Motoren ist ja eine schwere Kurbelwelle drin, die keine hohen Drehzahlen (über 6000U/min) mag und verkraftet. Gruß
Danke. Der Motor dreht mit kleiner Kurbelwelle (siehe anderes Video) munter bis 6500. Immerhin 1500 über Standard und völlig ausreichend. Die Größe und das Gewicht der Kurbelwelle sind nicht unbedingt ausschlaggebend für das erreichbare Drehzahlniveau. Der umgebaute Motor würde mit der originalen Treckerkurbelwelle genauso hoch drehen, aber länger brauchen dorthin. Die Haltbarkeit wäre ggf. auch reduziert.
You're well on the way to joining the very small exclusive club of Jawa CZ riders that have managed to do the "Ton" (100 MPH / 159 KPH) on a modified 2 stroke production Jawa CZ motorcycle.
@@Q.L.Engineering sir, i am from India and we got the jawa 250 two stroke bike running here. Later the ideal jawa company was closed due to bankruptcy and a new breed was born out of ideal jawa called the yezdi. I own a yezdi, the model name is roadking.
Klasse Arbeit! Sauber! Aber ich hätte die Schweißnähte nicht verputzt. Sieht "Factory Racer"-mäßiger aus! Ansonsten, TOP! Welches Programm hast du zum Erstellen der Abwicklungen benutz? Und mit was wurden die Daten für den Laserstrahl (oder Wasserstrahl?) schneider konvertiert?
@@Q.L.Engineering Ah ja! Vielen Dank für die schnelle Antwort! Ansonsten: Weiter so! Ganz klasse Arbeit! Mir schwebt so n Projekt für die Simson vor. Da hats bisher an der Umsetzung für nen Moto Cross Auspuff gescheitert da das ja noch mal n bißchen komplizierter ist wegen der schärferen Bögen und engeren Radien. Aber dein Video is echt ne gute Inspiration!
Die beste 559 aller Zeiten! Wann geht's los mit der eigenen Tuningfirma für Jawa und ČZ? Der Markt ist riesig aber so verdammt leer 😂! Den passenden Maschinenpark hast du ja am Start. Gibt's eigentlich noch Tuningpotenzial für die Maschine?
Also, ich denke für kommerzielle Tätigkeiten bedarf es noch etwas mehr als ein paar Hobbymaschinen. Die Sicherheitsreserven sind überall im Motor aufgebraucht. Insbesondere das Getriebe ist am Ende. Die Hauptwelle verbiegt sich bereits durch das hohe Moment…
@@Q.L.Engineering Ich würde Optimum Geräte nicht als Hobbymaschinen bezeichnen 😶. Bastel doch ne Tuninganleitung daraus, da gebe es genug Abnehmer für. Gerade beim Auspuff sieht's ja wirklich dunkel düster aus...hier wäre ne Kleinserie einer entschärfter Version was feines!
Twin pipes for a smallish, one cylinder motor, might be a bit overkill. Soon you are putting a turbo on it to really let it breathe! I mean with drum brakes, and oldies suspension, would you even want it to go super fast? Does have a certain space technology esthetic to it, exhaust kinda looks like support rockets. 🙂
![[#2024MAMA] G-DRAGON - 무제(Untitled, 2014)+POWER+HOME SWEET HOME+뱅뱅뱅+FANTASTIC BABY | Mnet 241123 방송](http://i.ytimg.com/vi/Ox29z5Nf1Uk/mqdefault.jpg)
I spent 17 years in the industry building two-stroke expansion Chambers and loved every minute of it.
That’s a very personal & special feedback. Thanks a lot.
Sir can u tell me how to calulate and make a perfect expansion chamber for a 2 stroke tuned vespa150 super
Sir can u tell me how to calulate and make a perfect expansion chamber for a 2 stroke tuned vespa150 super
I recommend a Vespa Specialist for that project. There is plenty of them in Europe for example.
I agree with Mr. Chuck, fantastic job!
When I was a teen I used the spare time teens have wisely. I used to buy crate bikes that nobody knew about or had long forgotten. Jawa, CZ, Penton, Bultaco, Montesa, Ossa - and make them absolute museum pieces. New or better than new. Then make a fitted cover and my mom would embroider the logo and sew, my dad would waterproof them. Buyers came from far away and NEVER haggled on price. These machines are works of art and should be treated like precious treasures and rode into the ground like ya stole it. When you ride one and it gets the wind in your face and you and the bike become one and you find your pace, that happy place where the two of you just tick: replace THAT! When you look deep into it's paint work so rich and deep and flawless...see the sun blinding you off the chrome...You jump back on it to ride it LOTS more! It's a love affair, man. I could NEVER be happy with factory new being "good enough".
Very true Sir, very true.
Я просто в шоке!
Сколько проделано работы😐
Титановый труд.
Я ремонтирую явы, посмотрев это видео, я понял что я не ремонтирую явы, я их протираю от масла!
Автор просто проделал очень серьезный путь👏 Красава
Dear Mr von Stern. Thanks for sharing another extreme masterpiece of skill & mechanical beauty. There won‘t be many people on the planet who invest such a level of endurance and passion for their vintage bike. Keep up your wonderful work.
Nur wirkliche Liebhaber beherrschen einen solch perfekten Job...sehr gut👍
Danke Oliver.
Просто великолепная работа👍 Парень, ты просто гениальный мастер, прими искренние слова с уважением
As a fabricator and welder of 30+ years I can truly appreciate the skill and craftsmanship in making these. Excellent job, I bow down to you. Beautiful pipes.
In a future project I suggest tack welding your entire pipe together then filling it with a constantly replenished supply of argon (back flushing). It will give a cleaner weld on the inside and a stronger weld for resistance to metal fatigue.
Thanks for the tips and feedback.
In my view the biggest potential for weld improvement is a turning device for automated feed…
Siegfried, You have amazing talent and patience for that matter. Great to see tuning work on a Jawa for a change.
Thank you, Sir! 👍🏻👊🏼😀
I've watched every video of your jawa tuning, this work is absolutely brilliant and well done , in each detail. I'm a two stroke lover since childhood and i completely agree with what you have done. Decreasing crank weight, converting the piston port to reed valve... everything made respecting the original look of the Jawa. Very pleasant to watch till the end, i hope you make more videos for a good listening to this singer! It runs like later ari-cooled cross with many rpm and a lot of torque at low. As i expected you had issues with gearbox and clutch system, but you solved brilliantly. I've recently got a spare cylinder for my californian 250 and i was thinking to work on the cylinder, not something so radical but definetly they have good potential. Still thank you for sharing these brilliant work, have a nice road :)
beautiful work as always ...looks stunning
Thanks Asif!
Evil sound! Perfect job! My first bike was the Jawa and now I'm thinking about it again, thanks a lot for the video!
You are welcome. Regards S.v.S.
About 12 years ago, I designed & built the entire exhaust system for my 1988 Jawa 500-826 500R Mk.II. I ran the numbers and deliberately made one of the headers 8cm. longer than the other, which causes the Rotax 504 engine to ease into "coming on the cam" at 6,000 RPM, fully light up between 7,000 to 9,000 RPM and rev out at 10,000 RPM.
The silencer is a cut shorter 638 silencer (for the megaphone effect) with the innards of a Micron race can with added adjustable backpressure tubes (because 4 stroke singles hate straight through pipes / need backpressure).
Top speed was up from the strangled stock 95 MPH to just over an indicated 115 MPH.
Very interesting. Thanks!
For man, who was born in the same country, where this bike was produced, is this project something special... Amazing work 👋👋 Always great to watch your videos
Thank you Sir. Greetings to 🇨🇿
Damn, I am envious of all the skill, money, time and equipment you have.
Уважаемый мастер, похоже Вы до 100 лет будете увлечённым своей страстью к качеству исполнения и к полёту мысли!🎉❤😊😊😊
🙂👍🏻
Ein Meisterwerk der Handwerkskunst👌
Ja, danke. War ordentlich Aufwand… bin auch zufrieden mit der ersten Arbeit dieser Art.
Schöne Arbeit und wirklich gute Ausrüstung hast du in deiner Werkstatt!
Erstaunliche, super professionale Arbeit. Noch dazu in einem sehr sympthischen Video verpackt - dankeschön!
Danke für das exklusive Feedback.
Оно этого стоит
Грамотно и красиво получилось
👍👍👍👍👍
Your level of craftsmanship is unreal , great job 👍
Oh, wow. Thanks for the intense comment.
Sehr geile Arbeit Siegfried, viel Liebe zum Detail und am Ende ein perfektes Ergebnis!
Habe dich heute erst entdeckt weil ich krank im Bett liege aber davon möchte ich gerne mehr sehen, mach weiter so. 👍
fantastic- waiting for a video on speed checks with this setup !
👊🏼🤟🏼😎
Ale masz fajny przyrząd na prasę do małych stozkow 😀 piękna robota.
Excellent work done.State of the art!
Thank you, Sir.
Mega Handwerk so was habe ich noch nicht gesehen ich bin schon 63 Jahre top genial
Das alles und noch viel mehr… Danke Rio!
Unbelievably good !!! UNBELIEVABLY GOOD. AMAZING AMAZING LOVELY WORK, MAN !!!
Thanks for watching & your appreciation.
Phantastische Arbeit, Gratulation!
👋🏻🙋👍🏻
pěkná práce, motor jde krásně do otáček
🤟🏼💥✅👍🏻
The out come is beautiful
Thanks Mate!
Diese ganze Arbeit,der Wahnsinn absolut 👌
Der Mensch braucht stets auf fordernde Aufgaben!
Мне одному не звучит? Руки золотые,моё почтение.
Εξαιρετική δουλειά, φρεντ!! Μα άξιζε τον κόπο, το μηχανάκι αυτό ειν αργοστροφο, κ λίγη δύναμη να πάρει ακόμη δεν θα του φτάνουν φρένα, αναρτήσεις, λάστιχα μετά... Μπράβο, πάντως!! ❤️
👊🏼🤟🏼👍🏻
If it’s faster- then it’s better! Great 👍 work
👊🏼💪🏼🤟🏼
Siegfried , is the carb a solex? Can you upgrade this a bit?
I use a Keihin PWM38.
looks very professional to me. great welder
Thanks you, Sir!
Sounds nice, a lot of work for something that might work or might not. there is so many variables in to making a 2-stroke exhaust pipe that its almost always hit or miss :D
That’s right. This one produces good top end power but the low end is way weaker than expected. So it’s more for a drag race, but not normal driving.
Building my rezonator on my 60/4 S51 (with a 21mm Dellorto carb and factory 4 speed gearbox) was the single most huge powerup step of all the things I did to it (to reach a stable max speed of 100kmh)
Thanks an achievement. Unfortunately its all a little more complicated if you cylinder has to pipes, hence wants two resonators…
Sehr schöne und präzise Arbeit. So einen Auspuff könnte ich auch gut für meinen Berlin Roller gebrauchen 😁
👊🏼🤟🏼Roller Berlin mit 40 PS?? 🚀🚀🧨
@@Q.L.Engineering 15 würden mir schon reichen 😂
schöner Sound und super gute Arbeit!
Highly appreciated work. 👌👌👌👌👌👏👏👏👏👏👏. Happy to see this video.
Please let me know if there any possibility to buy this kind of similar calculated expansion pipes of same quality.
Those pipes would look awesome with fins!
🤔😀🤟🏼👊🏼
Excelent tunning jawa...great work and badass sound 😎
Thanks Mate 🤟🏼👍🏻🤟🏼😀
min 4:56 ingenius tool, Good job!
And simple to make!
TOP! guter Mann. Sehr schönes Video! VG Achtzehner Zweitakt Tuning
Good old Achtzehner Tuning from LPZ still alive. Keep on racing!
Дуже гарно все зроблено) мотор працює неймовірно добре...
Дуже дякую! 👊🏼👍🏼🤟🏼
Beautiful work bro those are some amazing looking and sounding pipes 👌😎
Thank you, Sir!
My first bike in 1975 man was it fast 😮
Hut ab!
Richtig schön gemacht, genau so muss das aussehen .
Ist schon sehr lange ein Traum von mir einen Resoauspuff wie deinen, komplett selbst zu berechnen und zu fertigen.
Hab für meine Ktm comet einen Leovince ZX Resonanzkörper mit dem Endschalldämpfer einer Zigarre verschweißt.
Sieht deinem Schmuckstück ziemlich ähnlich.
Respekt und Anerkennung aus Wien 😉
Danke Lukas. Viel Spaß mit der Comet!
Hi, Mister Sieg. :) i'm just wondering do you have any plan's for tho exaust's? or even better question... would that exaust wor ok. on Jawa 350 TS 2 cyl.? I would like to make some better exaust for mine... so I would be happy if you would help me... thank you very much in front...
Enjoy watching your work ♥️
Thanks Mate 👊🏼🤟🏼.
Absolutely superb, many thanks
Thanks Richard!
Absolutely amazing job 👍
Thanks a lot for your feedback.
Ich liebe den Klang der Jawa
Great build, top. Any more news on the project?
Hi, thanks for the comment. The improved and heavy duty gearbox is in the making still….
Impressively colossal amount of work. I made many pipes without having to consider smoothing and chrome plating so your job is way harder. I am curious how you generated your flat patterns for the sections?
Hi, what do you mean with flat patterns?
@@Q.L.Engineering The shape of the sheet metal you cut out before rolling into cones. Some of yours have a bowtie shape that I don't recognize.
Well, that’s what the CAD program spits out. You probably mean the smallest pieces which form a bow segment (as part of inlet pipe) Those have to be bow-shaped because of that…
Freaking cool work, well done 👏
🤟🏼👊🏼💪🏼😉
Great video love the sound of it
Thanks Mate!
Sound Amazing ! Again,again...
Yepp.👊🏼👊🏼🤟🏼👍🏻
С ума сойти Вы кто? Уважение зашкаливает
Sehr schöne Arbeit 👍🏻
Merci. 👊🏼💪🏼
tolle arbeit mein freund... respekt
Danke für den Zuspruch.
Respekt! Du hast was drauf!
Recht herzlichen Dank, Kollege Hinterhofschrauber.
Do you plan upload some video of riding ?
Instant subscription. Amazing work
Thanks Bogdan!
I'm curious about power gain..is it gave you the expected performance? More top end power or bottom to mid?
It looks amazing, how much s
Would a full engine and setup cost?
Thanks for the comment. I think one cannot weight the money for my hobby work. Professional manufacturers can answer this…
Optisch eine Wucht. Prima!
Danke. Ja, sind ganz gut geworden die Dosen…
Super video
Thanks Andrej. 🤟🏼👊🏼
Beautiful!!!
👌🏻👍🏻😃
very good work - perfekt sound!!
Thanks!
Well that's a beast right there😏
Прекрасна робота .
Просто шедеврально!!!!!!)
Beautiful Sound ♥️♥️♥️💨
👍🏻👊🏼💪🏼💥☄️
Hey there,nice work man I love it, ❤❤
I need to contact you man, cause I want to build a pipe but I don't have the book ,is there any chance I can get a pdf file?
Amazing work and awesome welding! Can I ask what settings you were using on your welder to prevent burning through such thin metal?
For initial spots I used below 10 A. For weld I used settings between 25 & 35 A. I was told professionals use higher power but well much faster, which reduces heat affected zone and results in better weld. I’m hobby welder!
I came across your video series on my fathers' phone.
On his last days he was watching these video's. Begging for time to begin tuning his personal CZ250 Sport.
Now that'll be up to me. However, no parts are available, only to be crafted. So that'll be a long journey.
However, I also was thinking to transform it into electric powerhouse, which is more my thing and is readily available.
But... Two strokes man... The memories are amazing. Racing together with my father, so that'll be first choice.
You know any place where I can get old spare engines or parts for some more power?
Hi. I’m not aware of anyone selling CZ tuning or improvement parts. Some Spare parts can be found here Etovar.eu You need to be quick, they close business soon.
Sounds lovely...
Just watched the five parts, very, very similar to getting vintage Vespas and Lambrettas to handle 40- 70+ BHP 👍
Thanks for the appraisal and the investment of so much of your time.
Physical / mechanical constraints are similar. So, why should the content be different to corresponding Lambretta or Vespa projects.
@@Q.L.Engineering After looking, they aren't so different, it's just that I knew nothing of your motorcycle. I wrongly assumed the internals of your engine would be stronger to start with. Therefore using this hypothesis you may have done your tuning quicker and with less remedial work had studied scooter tuning ,looking at their already weak spots.
I would be interested at see your cylinder timings, if it's not a secret.
Lambrettas are piston ported too,
Vespas as standard are rotary valve, though both as standard are single cylinder and often get converted to reed valve. Their are off the shelf twin cylinder Lambretta engines now readily available and more than a few twin cylinder Vespa's have been made.
By the way ,love the look of your handlebars and Speedo, very Vespa like 😉
Too many secrets just make the world a worse place: Ex 178 deg, Transf 125. Nothing extreme but way way higher than stock.
@@Q.L.Engineering Thank you for your quick reply
re: secrets , very true.
The way I see it no matter what you ride, if you love two stroke tuning we all have the same love.
Many Scooterists also own motorcycles too, by the way
@@Q.L.Engineering this is a nice example of Lambretta tuning , though with higher port timings. 👇
th-cam.com/video/cdrzuDRD0co/w-d-xo.html
And these 👇
th-cam.com/video/U__v7XnAPj4/w-d-xo.html
th-cam.com/video/Z8YXb1mNc9U/w-d-xo.html
Super impressed with your work, well done. You've managed to make a 2 wheeled, 2 stroke, Czech snow plough, into a very frisky lil sleeper . But can you get it to still pop and idle all on its own long enough to don the skid lid and gloves, or wait at a T long enough for traffic to pass without bleeping the throttle?
I mean no disrespect, you engineering skills and knowledge are well above my own. I just ask because I imagine that the weight and enertia of that over engineered crank in the original engine went a long way toward producing the famous low down 'tractor torque', and endlessly reliable slow idle that made them so popular....I do understand that in pursuit of power, it is simply impossible to both have and eat cake.....but just curious about the idling aspect now you've shifted so far away from the agricultural intent of the original bulletproof Czech design. Thanks for sharing your great work, I have a box full of complete first iteration 350 Californian and other bits including czech made electronic ignition...you've inspired me to get back on the spanners and get her terrorizing the neighborhood and turning the air blue with 2 stroke smoke and fist shaking abuse like she's meant to...😀
Not sure what your question is, but yes, the farmers engine seems to cope with power in general after improving clutch, primary drive, gearbox (to be continued) and so on and so on. The drive system would need a little more damping like on modern engines. That would help…
Beautiful job!! I am going to build exhaust for my Jawa 50, but i have a question. What material were you using? What steel grade should i look for?
Thanks Matej, this is normal sheet metal DC01 1,0 mm. If you don’t chrome plate after finishing you can use stainless as well. Less likely to crack.
@@Q.L.Engineering thank you very much
Absolut liebevolle Arbeit bis ins Detail, Hut ab!
Mich würde kurz interessieren, für welchen Drehzahlbereich (ca.) der Auspuff für die 353-er gedacht ist? Bei den normalen (ungetunten) 352, 353, 354, 360, ... Motoren ist ja eine schwere Kurbelwelle drin, die keine hohen Drehzahlen (über 6000U/min) mag und verkraftet. Gruß
Danke. Der Motor dreht mit kleiner Kurbelwelle (siehe anderes Video) munter bis 6500. Immerhin 1500 über Standard und völlig ausreichend. Die Größe und das Gewicht der Kurbelwelle sind nicht unbedingt ausschlaggebend für das erreichbare Drehzahlniveau. Der umgebaute Motor würde mit der originalen Treckerkurbelwelle genauso hoch drehen, aber länger brauchen dorthin. Die Haltbarkeit wäre ggf. auch reduziert.
You're well on the way to joining the very small exclusive club of Jawa CZ riders that have managed to do the "Ton" (100 MPH / 159 KPH) on a modified 2 stroke production Jawa CZ motorcycle.
Well, I don’t think I’ll make it to the Ton with this old lady. It’s more a low-to-mid torque monster, and that also fits the bike style very well.
Delightful.
nice job, compliments👍
👊🏼👊🏼💪🏼.
Absolute Meisterarbeit!
👊🏼👍🏻💪🏼
Hammer Arbeit 👍 Wobei eine RAW Optik mit den Schweißnähten auch ganz witzig gewesen wäre. 🤣 Natürlich nur Spaß. Sehr schön!!
Herzlichen Dank für den Zuspruch.
looks Realy NICE
Thanks Mr Sommer!
Wow, great work 🔥
Thanks for the positive feedback.
@@Q.L.Engineering sir, i am from India and we got the jawa 250 two stroke bike running here. Later the ideal jawa company was closed due to bankruptcy and a new breed was born out of ideal jawa called the yezdi. I own a yezdi, the model name is roadking.
Yes, and you’ve got the new JAWAs with 300cc produced in India. Good looking bikes, one can buy in Europe too, now.
@@Q.L.Engineering yes it is relaunched after decades. Both the jawas and yezdies. My yezdi is a two stroke 1996model. A 250cc
Cool great done
Саунд божественный!
Klasse Arbeit! Sauber!
Aber ich hätte die Schweißnähte nicht verputzt. Sieht "Factory Racer"-mäßiger aus! Ansonsten, TOP!
Welches Programm hast du zum Erstellen der Abwicklungen benutz? Und mit was wurden die Daten für den Laserstrahl (oder Wasserstrahl?) schneider konvertiert?
Danke Fritz, für den Zuspruch: Solidworks & .step… Teile wurden gelasert.
@@Q.L.Engineering Ah ja! Vielen Dank für die schnelle Antwort!
Ansonsten: Weiter so! Ganz klasse Arbeit!
Mir schwebt so n Projekt für die Simson vor. Da hats bisher an der Umsetzung für nen Moto Cross Auspuff gescheitert da das ja noch mal n bißchen komplizierter ist wegen der schärferen Bögen und engeren Radien. Aber dein Video is echt ne gute Inspiration!
Sehr schöne Arbeit 👍
Merci Nils.
great skills and sound ! congrats! how does the TÜV guy react?
Those exhausts are not for daily purpose…
Perfect work.. 👌👌👌👌👌
Thank you, Sir.
Die beste 559 aller Zeiten! Wann geht's los mit der eigenen Tuningfirma für Jawa und ČZ? Der Markt ist riesig aber so verdammt leer 😂! Den passenden Maschinenpark hast du ja am Start. Gibt's eigentlich noch Tuningpotenzial für die Maschine?
Also, ich denke für kommerzielle Tätigkeiten bedarf es noch etwas mehr als ein paar Hobbymaschinen. Die Sicherheitsreserven sind überall im Motor aufgebraucht. Insbesondere das Getriebe ist am Ende. Die Hauptwelle verbiegt sich bereits durch das hohe Moment…
@@Q.L.Engineering Ich würde Optimum Geräte nicht als Hobbymaschinen bezeichnen 😶. Bastel doch ne Tuninganleitung daraus, da gebe es genug Abnehmer für. Gerade beim Auspuff sieht's ja wirklich dunkel düster aus...hier wäre ne Kleinserie einer entschärfter Version was feines!
Twin pipes for a smallish, one cylinder motor, might be a bit overkill. Soon you are putting a turbo on it to really let it breathe!
I mean with drum brakes, and oldies suspension, would you even want it to go super fast?
Does have a certain space technology esthetic to it, exhaust kinda looks like support rockets. 🙂
A turbo or compressor is a good idea, but where to hide to make it looking like a stock bike?
It is brutal 😮
Very cool
When you continue the jawa tuning series
Currently working on improved gearbox parts…
Ok
Geile Scheiße, eine feine Anlage! Und auch ein schönes Video!
Merci!