Impressive again and mega congrats ! 2 quick hints if it would be necessary however: +/- 0.05mm at the crank shaft end to be set, and maybe, a small tig pointing at the connecting rod head axle, especially on 2 cylinders engine, but 1-cyl as well. Meanwhile just wondering about the resulting benefit, Vs. increasing the combustion chamber pressure (surface milling), aside the longer stroke effect (more volume displacement) and risks (comb. chamber vs piston interference, piston skirt vs. Crankshaft mass). Last hint, in term of dynamic design, square stroke x dia sizes provides usually a better balance.
120 hai thì nó gần tương đương 250 bốn thì rồi mà còn chê yếu,cu cậu này chắc muốn mau đến với ... tổ tiên đây.Mình thấy Su mặt quỷ đôn rồi,kéo một phát,đầu piston thông nhau luôn.
Offsetting the crank pin to make a stroker with buying no parts. All labor. If you chuck the crank back in the lathe once you get it assembled, you can use a dial indicator on the second side so you get a better "clocked on the crankpin" balance job. Its more accurate than just a straight edge to check the squareness side to side.
think the bigger issue is the hand pinning on the re-assemble when it original was so tight it had to be pressed out. think this vid was more of a concept/ability to do it more then actual practice. there was a lot of things skipped like before even dis-asm what was the width on the main rod, crank bearing space etc etc all the other steps when dealing with cranks and rods. It was a cool vid but as you point out there def some flaws/improvements to be looked at.
Impossible to know what the gains are or were, without proper testing this could lose power, I used to know a guy who raced, his dad was a bit of a tuner and always worked the ports, he had the "touch" he stayed in the rules as to port size but he had more power and torque, always pulling away from the pack, I would like to see some results from a stroker rather than one thats been ported.
@@Taz6688 i had cg engine on dirt bike chassis called crf150l here in indonesia,my crank pin offseted to 2mm up so my stroke now increase 4mm fron the standard 57.8mm,adding 5nm of torque across all range & more fuel efficient due to bigger engine stroke😀
@@coreymatthews9921 hard for 2 stroke,mostly here using 4 stroke engine and standard connecting rod then we machining piston to match block height if possible or adding new spacer in the bottom of cylinder block and new camshaft chain,for 2 stroke engine need to adjust the port for added piston height af bdc and make new spacer bdc or if you can use connecting rod that shorter from your standard ones,but i dont reccomend this because shorter connecting rod ratio can have bad effect on cylinder walls
No dial gauge for the Web alignment just a steel straight edge. Wow. I admire your trust in your eyes. 😮 You will have to use a packer plate under the barrel to keep port timing correct so no gain in cc just a longer stroke so a less revving engine which in turn will lower BHP at the wheel unless different gearing is used. A gain in one place = a loss in another place
Excelente...!!! Lo único malo es que no diste el ajuste a los rodamientos laterales del cigüeñal, pudiste aplicar soldadura en la pista del cigueñal donde va el rodamiento y refrentar la cara del cigüeñal y el eje al mismo tiempo( 0.01 mm) de interferencia y listo.
I find it interesting to read all the comments about how bad this modification is. How about lets see some "Looks great. Here's the innovative difficult ground breaking think that I did." Show us what you have done, not beat down this man's project. Billk
I have seen any number of his projects run, and run well. As I have said. Show us what you have done. Where is your channel???? Put up or shut up. Billk
@@williamklein1221 i am not saying that this built is dumb but what kind of logic do you have? By your logic, no person can call out something if they cannot do one themselves? Lol, what are you, a child? If i see someone build a fragile glass helmet as a riding helmet i cannot call it out if i cannot build my own helmet? Lol, ok 😂
Can't tell on my phone. Is he stroking it, Moving the crank pin straight out fron the main journals or is he offsetting it to one side to change the rod angle at tdc?
wow that is neat that's how you do it, need to build one from scratch and it is all built on a lathe turned down from a big diameter piece of steel 2 sides then the center journal is pressed into the perfect hole with thin shims and the bearing in the middle. need to make a stock one I won't be racing the bike just riding it around town
Love all the comments from 2 stroke nubs on this. Stop being restricted by what is available on the shelves. You will be amazed as to what a good set of carbon reeds, a stroked cam, a metal gasket set and a proper resonator can do to a small displacement engine.
@@kcrichton7485 not really. It's a 2 stroke. I don't know about where you live, but I could saw up 2 cranks and have them welded, balanced and rehardened within a week. I don't have 40ks worth of tools etc. Because other people do. 🙄
Lmfao if its available on the shelf. Its because someone like me spent years and unimaginable sums of miney R&Ding it. That means i know that my product isnt going to fail and that the reason im making it makes sense as a sales point. You muppet. What this guy did is take a worn out crank and make it look like it wasnt worn out. Lmfao. That crank is useless. He just made a grenade
You showed some machining, but did not reference as your title said How Which way and by how much, and if you moved it towards the top, hw much clearance will be left
That pin definitely won't mushroom out when you hammer on it. Also I do my best welding in sandals too. Please excuse me while I use ramen and glue to fix everything.
Did that move the pin out? Wouldn't you have to fill in the hole all the way and rebore to do that. Or was this just to clean up tolerances for a new pin and bearing?... Stroking it would increase power but I don't see that going on here (as stated in the title). Sweet rebuild though
một bản dựng rất nhiều thông tin, bạn có thể thử làm bình xăng dự trữ của cc thấp hơn như honda xrm / rs125 underbone, nâng cấp bình xăng lên 4-6 lít, nghĩa là ubox sẽ được chuyển thành bình xăng. Tôi đang tìm kiếm ở đây trên youtube nếu ai đó đã cố gắng xây dựng. cảm ơn và nhiều quyền lực hơn.
А почему индикатором в конце не проверил? хотя и так видно биение около 7 или 8 соток, без камеры поправил? Совет при сборке коленвала неплохо немного нагреть половинки 70-80 С сборка происходит качественней и легче, ну а так конечно лайк.
i love the stroke measure but changing the stroke on a two stroke changes the port timing if you use the same deck clearance never found it makes much difference ,changing the bore is the easiest way to increase capacity, but that doesnt work on two strokes either as shallow wide ports have a poor port window area , but i would also worried about the interference fit of the crank pin if you could used a big hammer to assemble
Changing the stroke completely changes the port timing on the intake and the exhaust. How do you compensate for the piston striking the head? How much lower are the RPMs now. Is the ignition timing going to complement the lower redline?? was The crankcase capacity taken into the calculation the cylinder capacity? The intake timing, the transfer port timing, and the exhaust port timing are all considered to work with the ignition timing. Not to mention, the exhaust pipe/exhaust expansion chamber is designed to work with a certain capacity. this crankshaft does not have keyed crank pins..I didn’t notice you truing the crankshaft halves to each other.. did this modification concentrate the power band or expand it? Because all of the port timings and ignition timing were designed to work with a certain length of stroke. The stroke is now changed. Even the transmission ratios are figured to complement the power band.. By making the stroke longer, did you shim the cylinder up at the base? Or did you shim the head up by putting additional head gaskets? If you just shimmed the head, how did you set the timing? A standard timing would be 2 millimeters before top dead center..With a longer stroke, the standard ignition timing spark will arrive earlier, increasing the likelihood of detonation.. i’m not saying it won’t work, I’m not saying it won’t make more power, I’m just saying that there is a whole lot to consider when you change one thing, everything else changes.. i have seen tuners always tweaking things, and always making their machines less reliable and slower.. I did the same for my first two years of road racing two strokes. My third year I decided to leave the machine box stock and just concentrate on learning how to ride rather than constantly repairing the machine which I ended up modifying into a pile of junk. After I started leaving the machine bone stock, I won six road racing championships and two national championships, on a bone stock utterly reliable 250 2 stroke.. after i finally realized that it was not the machine that was slow, it was me..
U should watch video from south east asia. we have faster 2 stroke here. 125cc can go up to 185kmh on GPS. 150cc can go around 200-220kmh. We only increase the stroke around 0.8mm and maximum is 2mm.
Maybe before making haphazard modifications you should have done some research and learned BEFORE modifying your machine. Longer stroke mods have been done for years very successfully even invisibly from outside the engine it is called cheating by some
now i want to buy a hidraulic press, great work men! keep shearing it!
I respect you bro lots of love from India 👌😍
Impressive again and mega congrats !
2 quick hints if it would be necessary however: +/- 0.05mm at the crank shaft end to be set, and maybe, a small tig pointing at the connecting rod head axle, especially on 2 cylinders engine, but 1-cyl as well.
Meanwhile just wondering about the resulting benefit, Vs. increasing the combustion chamber pressure (surface milling), aside the longer stroke effect (more volume displacement) and risks (comb. chamber vs piston interference, piston skirt vs. Crankshaft mass). Last hint, in term of dynamic design, square stroke x dia sizes provides usually a better balance.
This seems to be how they make a supermini. Big bore to get 105cc, then stroked crank to get 112cc. Seems like a ton of work too.
@@therawlifefamily thx, yep i guess so too :-)
Молочага! Наконец-то показал в деталях. Но некоторым хэйтерам нужна точность на стрелочном индикаторе во всех плоскостях. ;-)
Лучше новую купить
@@noidontthinksolol CZcams recommends watching this channel. Why are you here?
You have some skills man👍
Hay quá Bác ơi, kiến thức rất bổ ich, Vn khá ít người làm được
120 hai thì nó gần tương đương 250 bốn thì rồi mà còn chê yếu,cu cậu này chắc muốn mau đến với ... tổ tiên đây.Mình thấy Su mặt quỷ đôn rồi,kéo một phát,đầu piston thông nhau luôn.
Làm tốt lắm Dan 😁😁🤘🤘
Le Dan. I wish i lived closer. So inventive
I reckon it’s great
Doing at home what costs a bloody fortune at the bike shop
Top job Lee Dan.
Offsetting the crank pin to make a stroker with buying no parts. All labor. If you chuck the crank back in the lathe once you get it assembled, you can use a dial indicator on the second side so you get a better "clocked on the crankpin" balance job. Its more accurate than just a straight edge to check the squareness side to side.
think the bigger issue is the hand pinning on the re-assemble when it original was so tight it had to be pressed out. think this vid was more of a concept/ability to do it more then actual practice. there was a lot of things skipped like before even dis-asm what was the width on the main rod, crank bearing space etc etc all the other steps when dealing with cranks and rods. It was a cool vid but as you point out there def some flaws/improvements to be looked at.
Impossible to know what the gains are or were, without proper testing this could lose power, I used to know a guy who raced, his dad was a bit of a tuner and always worked the ports, he had the "touch" he stayed in the rules as to port size but he had more power and torque, always pulling away from the pack, I would like to see some results from a stroker rather than one thats been ported.
@@Taz6688 i had cg engine on dirt bike chassis called crf150l here in indonesia,my crank pin offseted to 2mm up so my stroke now increase 4mm fron the standard 57.8mm,adding 5nm of torque across all range & more fuel efficient due to bigger engine stroke😀
@@92gashaulass43 how do I get one of those for 98 kx 250
@@coreymatthews9921 hard for 2 stroke,mostly here using 4 stroke engine and standard connecting rod then we machining piston to match block height if possible or adding new spacer in the bottom of cylinder block and new camshaft chain,for 2 stroke engine need to adjust the port for added piston height af bdc and make new spacer bdc or if you can use connecting rod that shorter from your standard ones,but i dont reccomend this because shorter connecting rod ratio can have bad effect on cylinder walls
A simple but very well performed modification, I found great to watch, regards Doc Cox.
Pretty good,Nice job
Hay quá mãi ủng hộ anh
No dial gauge for the Web alignment just a steel straight edge. Wow. I admire your trust in your eyes. 😮 You will have to use a packer plate under the barrel to keep port timing correct so no gain in cc just a longer stroke so a less revving engine which in turn will lower BHP at the wheel unless different gearing is used. A gain in one place = a loss in another place
Cảm ơn bạn với những video hay
Excelente...!!!
Lo único malo es que no diste el ajuste a los rodamientos laterales del cigüeñal, pudiste aplicar soldadura en la pista del cigueñal donde va el rodamiento y refrentar la cara del cigüeñal y el eje al mismo tiempo( 0.01 mm) de interferencia y listo.
I find it interesting to read all the comments about how bad this modification is. How about lets see some "Looks great. Here's the innovative difficult ground breaking think that I did." Show us what you have done, not beat down this man's project. Billk
Its so much fun to beat down stupid projects. If you dont know how stupid it is have a real engineer explain it .
I have seen any number of his projects run, and run well. As I have said. Show us what you have done. Where is your channel???? Put up or shut up. Billk
make longer stroke, balancing crank, cutting bottom of piston, add spacer of cylinder body, get bigger capacity, adjust timing order, ussualy custom exhaust and intake also.
@@theelectricunicyclist9069 We'll see, every one of his other builds so far he's put in a bike and ran.
@@williamklein1221 i am not saying that this built is dumb but what kind of logic do you have? By your logic, no person can call out something if they cannot do one themselves? Lol, what are you, a child?
If i see someone build a fragile glass helmet as a riding helmet i cannot call it out if i cannot build my own helmet? Lol, ok 😂
Nice tooling!!
Hi vọng 1 ngày ko xa ông kĩ sư này sẽ nhận nâng cấp xe cho ae đam mê xe
Beautiful craftsmanship
This procedure is called re-phasing, which gives you more top end torque. It's an old Mechanic/Machinist secret use in old school racing.
Can't tell on my phone. Is he stroking it, Moving the crank pin straight out fron the main journals or is he offsetting it to one side to change the rod angle at tdc?
Can you explain it a bit more?
Like the sandals in that high tech machine shop 🤙🏼😁
In america, since what you did was offset grinding, we call it a stroker.
This is normal modification in asia. Certain country called this jack rod/upstroke.
Good stuff. Have done this before myself. This in combination with another mod or two can really breathe life into a small engine.
That’s awesome I weld barefoot too
Boa ferramenta bem feita.
wow that is neat that's how you do it, need to build one from scratch and it is all built on a lathe turned down from a big diameter piece of steel 2 sides then the center journal is pressed into the perfect hole with thin shims and the bearing in the middle. need to make a stock one I won't be racing the bike just riding it around town
Beautiful!
Mong anh làm về hai thì nhiều hơn em thik dòng hai thì lắm mãi ủng hộ anh🥰🥰
Ai biết le dan là người ở đâu không
@@trailangson9414 kiên giang
@@chiucnguyen928 oh
Thank you for sharing hope your vision results in good power!
That is a very nice fixture you have fabricated.
Hay quá bạn ơi 👍🌾🌾🌾
How much stroke increase? This is some real Allen Millyard shit you have going here. Awesome.
I wish I worked in your shop with you. I mis running a lathe and I have so much I want to try with scooters.
Làm cây dên đã quá a
Goodbye rotating assembly balance. It was nice knowing you.
Present Bro 🙋 from Philippines
Nice jnb from Pakistan
Like 👍 đã. K cần biết xem ntn
Good video....now i wished i had a lathe.
Hay quá a ơi
A làm máy wave chạy bằng dầu DO đi a
Brass shims will stop your tool sliding. Higher friction coefficient opposed to steel on steel.
Parabéns sou do Brasil excelente trabalho
Very nice work 👍
excelent!!!!👍👍👌👌👌
You can use a 2stroke motor like a sterling engine.
Channel yang bermanfaat👍
Osha is watching this going crazy welder and sandals in the same picture 📸 😅
Nice!
Love all the comments from 2 stroke nubs on this.
Stop being restricted by what is available on the shelves.
You will be amazed as to what a good set of carbon reeds, a stroked cam, a metal gasket set and a proper resonator can do to a small displacement engine.
Yep, all you need is 50k of tools and years of machining practice, or could just buy something much faster and save 45k hahaha
@@kcrichton7485 not really. It's a 2 stroke. I don't know about where you live, but I could saw up 2 cranks and have them welded, balanced and rehardened within a week.
I don't have 40ks worth of tools etc. Because other people do.
🙄
Lmfao if its available on the shelf. Its because someone like me spent years and unimaginable sums of miney R&Ding it. That means i know that my product isnt going to fail and that the reason im making it makes sense as a sales point. You muppet.
What this guy did is take a worn out crank and make it look like it wasnt worn out. Lmfao. That crank is useless. He just made a grenade
@@krotchlickmeugh627 you have never heard of stroking an engine? Wow.
Lên 2 xi lanh cho dòng 2 thì luôn bạn ơi...mong chờ siêu phẩm....!!!
Lên rồi đó, vào kênh xem đi
Anh Làm raider xăng cơ 2 máy đi ạ🥰
Hello where to buy the extension for your metal tower??
Mantap bang keren..the best
Impresive good lathe skills
Wow nice work 👏
Привет из Санкт-Петербурга 👍
You showed some machining, but did not reference as your title said How
Which way and by how much, and if you moved it towards the top,
hw much clearance will be left
That pin definitely won't mushroom out when you hammer on it. Also I do my best welding in sandals too. Please excuse me while I use ramen and glue to fix everything.
Good job and interesting
Do you have to install a shorter piston after that?
Needs a reworked barrel as well, all the port timings will change.
mantap stroke Up jiossss buat Motor CB
Amazing job, as always.
what are y using as a coolant
Bro we need you in our country
man ... I wish crank bearings fit that easy 🤣
I ever made smooth like that, so the case will safe for longer time. while its getting hot n cold every time.
For 2 stroke it's normal to have loose bearing at crankshaft, but tight at crankcase. For 4 stroke both need to be tight.
Those are mock up bearings honed out to fit easily for truing the crank not the bearing that the engine will see
Noo you wouldn't want that. My 2T moped had to replace crankshaft because of loose bearing. it woud cause rattle at any rpm
Hadir menyimak salam sukses n sehat selalu
Chào anh.anh có nhận hàn chế gắp nhôm không anh..?
外国人でポップヨシムラが居るのが嬉しいです尊敬します🎵
bên bạn độ hai máy giá thành bao nhiêu cho một xe độ vậy bn
Đầu tư cái mâm 4 chấu cho dễ làm bác
Can you show us how to convert exciter 135 to 2 stroke. Plz 😁
Now that's one hell of a craftsman
Hay anh
Did that move the pin out? Wouldn't you have to fill in the hole all the way and rebore to do that. Or was this just to clean up tolerances for a new pin and bearing?... Stroking it would increase power but I don't see that going on here (as stated in the title). Sweet rebuild though
Có đặt hàng làm mái 2 nong k anh
một bản dựng rất nhiều thông tin, bạn có thể thử làm bình xăng dự trữ của cc thấp hơn như honda xrm / rs125 underbone, nâng cấp bình xăng lên 4-6 lít, nghĩa là ubox sẽ được chuyển thành bình xăng. Tôi đang tìm kiếm ở đây trên youtube nếu ai đó đã cố gắng xây dựng. cảm ơn và nhiều quyền lực hơn.
Now show us how you made the tooling to do that.
HELLO FRIENDS SHARE VERY GOOD AND INTERESTING VIDEOS❤❤🇻🇳
А почему индикатором в конце не проверил? хотя и так видно биение около 7 или 8 соток, без камеры поправил? Совет при сборке коленвала неплохо немного нагреть половинки 70-80 С сборка происходит качественней и легче, ну а так конечно лайк.
Lên trái luôn anh ơi
👍👍
It you change suzuki gamma connecting rod? Or?
có đại tu xe Minsk không ah
Có chế đc con máy 2 thì 125 cc lòng nước có đề chạy ván lướt sóng ko a
It would have been easier to make any offset connecting rod pin and then once you get it in place everything correct then you weld it in place.
Oke nha anh dẩn
Thách anh làm đc trái 145mm đấy 💪😂
Xem thứ 2
i love the stroke measure but changing the stroke on a two stroke changes the port timing if you use the same deck clearance never found it makes much difference ,changing the bore is the easiest way to increase capacity, but that doesnt work on two strokes either as shallow wide ports have a poor port window area , but i would also worried about the interference fit of the crank pin if you could used a big hammer to assemble
The power numbers may not show it but port timing can be ALOT of extra speed/TQ when we are talking small/low power 2stroke
100% Love the big hammer tho...
Changing the stroke completely changes the port timing on the intake and the exhaust. How do you compensate for the piston striking the head? How much lower are the RPMs now. Is the ignition timing going to complement the lower redline?? was The crankcase capacity taken into the calculation the cylinder capacity?
The intake timing, the transfer port timing, and the exhaust port timing are all considered to work with the ignition timing. Not to mention, the exhaust pipe/exhaust expansion chamber is designed to work with a certain capacity. this crankshaft does not have keyed crank pins..I didn’t notice you truing the crankshaft halves to each other..
did this modification concentrate the power band or expand it? Because all of the port timings and ignition timing were designed to work with a certain length of stroke. The stroke is now changed. Even the transmission ratios are figured to complement the power band..
By making the stroke longer, did you shim the cylinder up at the base? Or did you shim the head up by putting additional head gaskets? If you just shimmed the head, how did you set the timing? A standard timing would be 2 millimeters before top dead center..With a longer stroke, the standard ignition timing spark will arrive earlier, increasing the likelihood of detonation..
i’m not saying it won’t work, I’m not saying it won’t make more power, I’m just saying that there is a whole lot to consider when you change one thing, everything else changes..
i have seen tuners always tweaking things, and always making their machines less reliable and slower.. I did the same for my first two years of road racing two strokes. My third year I decided to leave the machine box stock and just concentrate on learning how to ride rather than constantly repairing the machine which I ended up modifying into a pile of junk. After I started leaving the machine bone stock, I won six road racing championships and two national championships, on a bone stock utterly reliable 250 2 stroke.. after i finally realized that it was not the machine that was slow, it was me..
U should watch video from south east asia. we have faster 2 stroke here. 125cc can go up to 185kmh on GPS. 150cc can go around 200-220kmh. We only increase the stroke around 0.8mm and maximum is 2mm.
So you being fast on a faster bike would be - even faster. Go figure.
@@djrug Naw, he obviously can't figure.
@@TheNeroScout sure, we also adjust the length of pickup coil, for fire order.
Maybe before making haphazard modifications you should have done some research and learned BEFORE modifying your machine. Longer stroke mods have been done for years very successfully even invisibly from outside the engine it is called cheating by some
nice work
God al ways fascinating vidios
👏👏👏👏👏
Kerja yg menakjubkan
Bravissimo
How much to made this up stroke project
A real master ! Great job you make Dan ! :)