Piston rings add to wear and tear of the cylinder and use energy in doing so, I always run my engines with no piston rings, In fact the weight of the piston is also lost energy so i intend to run my engines with no pistons in future thus 0 wear on the bores.
In fact I've given some further thought and if you make a piston out of something really slippy, say for instance ice, surely it would make for more efficiency thus more power and fuel savings.
Single piston spring pistons are usually for high rpm racing applications. Some 70 or 90cc scooters for example, rev up to 16.000 rpm and have up to 35hp. Those are serviced after every race hehe. For daily use double rings are better :P Also having good quality oil helps sealing off compression abit.
Kawasaki released a "race workshop manual" for their ZXR400, that included the mods to do to the engine to spice it up a bit. In there they advise to remove one of the rings on each piston. Not making any claims here, just thought it was worth a mention.
Most issues with washing machines is that the electronics give out faster than they used to, on our washing machine we replaced a power capacitor for the engine with the "correctly" specced one, broke a couple months later. So then we bought an over specced (by like 20% voltage and a couple % capacitance because that was what we could find), 8 years later and it still runs perfectly. So there's some truth to things "being designed" to break, but mostly it comes down to underspecced parts
my yz125 has a single ring as do most 125 2t dirtbikes. The thing that sucks about them is obviously topend rebuilds come up quite a bit sooner than the 200, 250, and 300+cc 2t bikes (of course being small and revving to the moon for a 2t contributes too). But I know it reduces a bit of drag to increase the hp a bit, it is impressive these 125 bikes are putting out round about 40hp in such a nice light package. As always thanks for the video!
Tuner tip of the day: You don't want the piston gap to be bigger on the top ring vs the gap on the lower ring. Equal measured gap is ok because top ring expands more. Trapped pressure between the two could make the top ring float att TDC.
love the rant about quality and price of washing machines, i work in IT repairs and get people coming to me with poor quality cheap equipment, not using them correctly, and wondering why they aren't getting years out of them, and thinking theres some conspiracy about companies engineering failure into electronics, some muppet today who said the exact same thing about washing machines. I told him the same thing about how hard it would be to engineer failure into equipment, he wouldn't have it. Psssh
one ring to rule them all. can you do a video on nikasil linings. what are the pros and cons?? i work in a bike garage and have seen many nikasil coatings flake off the cylinder walls even though the piston rings and piston seem to be ok. the worst i've seen was on a polaris jet ski. it was a 750cc turbocharged unit. surely a steel liner would have been better in the engine considering is pumps out an astonishing 143hp. cheers
Hi Matt. I'm a simple Mopedtuner, and I heard, that a one ring piston is made to produce more rpm, and a two ring piston is made to produce more torque. Can you confirm that?
Ok Matt, I know this is supposed to be a bike channel, but now you have to build the "suck-u-off" washing machine. I'm sure there are some people that would pay handsomely for a his and her version. 😂🤣😂🤣😂🤦🏻♂️
Thanks for the video, but I hear people say 1 ring gives you more top end while 2 rings will give you a smoother powerband. What can you say about this?
Kuruma Designs I personally believe they're probably associating that to the characteristics of the engines that typically have twin or single rings. For instance 125's pretty much all have single rings and are very peaky bikes with a small window of about 2k to 2,500 rpm worth of powerband, where as the 200, 250, and 300s which are generally twin ring have a much wider powerband. The Honda 250 2t's were single ring and they didn't behave much different than the other manufacturers 250 2t's, they were great bikes but didn't seem to have any advantage.
Hmm, maybe. But I know for example ktm 125 exc has two rings and they have a pretty smooth powerband, while my friends husky cr 144 is single ring and hits hard on top. But one is an enduro bike and the other is a motocross bike so the differences may be in the porting of the cylinders rather then the number of rings.
For example I have a moped with a 80cc racing cylinder, and it has a single ring piston. I also have a race exhaust and stock ignition with a pretty big heavy flywheel. And this moped is very peaky, hits powerband at about 9krpm and carrys on until about 12-13krpm.
Hi Matt thanks for the link. So just to re-iterate it's mainly about heat transference? There's no difference in compression? Are dual ring piston kits stronger? Cheers.
Firction and heat transfer. Why would compression be any different? If you mean blow by, you're talking about a 2 stroke - not exactly a great sealing engine
1 ring is use for very high end high rev machines. It comes in handy to reduce friction and thus temperatures.2 rings are used in more endurance optimised engines, lower revs often to get the highest torque they can get. Also in low revs the temperature ain´t much of a problem.The thickness of 2 rings makes sure they last a lot longer then a single 0.8mm ring. So it is all up to your application and specially keeping the eye on maintainance.I personally love 2 ring cast iron with a lot of torque. With plate instead of resonance exhausts. It has all the torque right from the get go, is much cheaper then nicasil shit, much better fuel economy and on the street there is no difference to the racing 16 old . And if it shits the bed, you still can get home with a cilinder wall in moonshape and a spare old piston.
@@thedirtyworkshop I got the lesson it reduces heat in high rpm cylinders, but im eager to learn about other opinions.In what the dssc riders are telling me that is the main reason to go for 1 ring and alu/nicasil shit that breaks after the first seize.
So a few things are happening here.... 1 ring applying pressure to a cylinder wall is less friction than 2 rings, this is true. However, about 45% of piston heat is transfered through the top ring and 20% of the heat through the 2nd ring, with the second ring missing the heat flux is higher through the top ring. This means that top single rings usually run hotter than a cylinder with 2. This is why single rings are usually chromoly or some other alloy blend. 2 rings last longer because there's less stress on the top ring, the ring that does most of the sealing.
@@thedirtyworkshop Sounds legit. Still on setups with 16000+ rpm they choose 1 ring and they are always talking about heatseaze problems with 2 rings.For me it is kinda nothing cause my vespa only runs like 9000rpm at max.Still it is very interesting to see some racers blow up their stuff in 5minutes.
I've seen 1 ring on a lot of kits from rebuilding my kids bikes.Maybe it makes it less prone to heat seize when you throttle off with the reduced friction ?
In power tools (especially consumer grade) the component has been engineered to be as inexpensive as possible to produce while only having to outlive the warranty (even by just one day). Otherwise they have to make the warranty more expensive to pursue (either monetarily or time wise).
"to produce while only having to outlive the warranty (even by just one day)." - bollocks. So what your saying it that on thurday (day before warranty runs out) its fine. Saturday comes and it dies - bollocks. Lets take a cordless drill. Warranty 2 years, I don't use it until the last day of warranty and then it dies the day after from 1 hours use - fucking rubbish.
not from lack of use obviously just like old new stock isn't shit out of the box unless it was stored improperly. No what i was saying is that under intended use that is within what the warranty covers (many consumer grade power tools specify not for industrial use ) it will survive the warranty period. it even applies to stand by items that are in an always ready state like say a sump pump it only needs to be built to withstand intended use until the warranty is up if it only gets used four or five times in that year or two and is found to be seized just the day after the warranty ends then the company got it perfect (from a corporate standpoint) but if it dies before the warranty is up they just lost money and if it lasts twice as long they technically lost money on the replacement that would have been bought.
Daniël Windstra i just bought a Athena 70cc racing cylinder for my 50cc 2stroke moped and it has one piston ring:) altough i have never seen a 125cc 2stroke dirtbike or other 2stroke 125cc bike with one piston ring
ACreativeName Oh, I didn't know that. Ktm exc and sx both have powerful engines to be 125cc so I think the yamaha yz and for example honda cr could also have 1 piston ring. I am not sure about that though
Hiya matt, could you do a video about rotary inlet valves since we're on the subject of 2T anyways? I have an acquintance who once built one for his zundapp.
Don't take my word for it but I think the Yamaha crosses 125 have single piston rings but the TM racing bikes use a Yamaha engine and I think they have to piston rings not sure though
Generally speaking, road 2 strokes have 2 rings, off road and MX 2 stroke single 1 ring, having to swap rings on a 2 stroke twin is a hassle, for an off road single it takes minutes. If they used single rings in multi cycle road bikes buyers would go nuts about having the change rings as often as off road bikes do. But that is assumption from experience only, i rebuilt more bike engines as a mechanic than I've had hot breakfasts and I've never found any other reason for the difference other than 2 rings lasts longer and off road and race bikes a re-ring is a quick job and road bikes not so quick.
"and I've never found any other reason for the difference other than 2 rings lasts longer and off road and race bikes a re-ring is a quick job and road bikes not so quick." - it depends on 1) what the engine is intended for 2) thermal loading, etc etc etc Rebuilding and the number of rings/cost has nothing to do with it. The manufacturer doesn't care and how many rings it had isn't a selling point. You have to crack the engine open to find out how many rings it has, or look in the manual
Cambelts don't have to be designed to fail, they are a failure to begin with. Don't get me onto washing machines and sealed drums, then no vent between bearings so will always try to suck cool moist air past seal with temperature change.
On the subject of washing machines now!!! The only 2000 dollar washing machine today that will last 50 years, is a commercial coin operated type they have at the laundromat. Any wizbang thousands of dollars wifi enabled garbage, that have failures within months of purchasing, not "5 years".
Just about washing machines The biggest reason they fail is because people overloading them lol My mum has sworn by it and her washing machine was bought in 2001
well, husqvarna uses 1 ring, and i can not complain about it. the new saws come with an internal lil computer , so we can read the operating hours. after 1500 workhours actually the ring was fine, but the main bearings where worn out to the point when i prefer them replaced. soo.. i thnk a single ring is fine, husqvarna is a quite respected maker of chainsaws and stuff.. so if you sortha ask me, 1 ring is perfectly enough. keep in mind chainsaws operate (at least in professional use) under verry harsh conditions, and heat managment is quite a difficult task since the saws have to be light, rev high, have huge power for the weight, and space is verry limited. allso we do like to utilise most of the power they make. now 1500 hours under these conditions is proof enough for me, think about your bike, take say.. 80% of its top speed and calculate how far would you get with that speed in 1500 hours. say.. a scooter doing 50 km /hr would do 75000 km or ~46000 miles, or just for you island dwelling folks ~82 million yards. its enough.
Are you talking a one cylinder 2stroke or multi pistons sharing a case? One cylinder one ring. Multi cylinders shared case two rings depending on configuration. Some configurations of multi piston 2 strokes are better for one ring. Keep it simple stupid. Some engines you will see increased plug fouling with 2 rings. A one ring piston may help by letting more blow by.
"another vid where no one mentions ring flutter." - because ring flutter is a thing of the past in most cases. Most rings are thinner these days which means they have lower inertia. It would be like doing loads of videos on points.
understood but the mass has more to do with the point of flutter than ring thickness now adays. good video, didnt mean the negative, just watched several already and no one mentioned that aspect and it surprsed me, thats all.
any 2 strokes you want to the rings to last longer like on a ktm exc you want 2 rings... sx150 that you race 10 hours and replace the piston and rings why bother with a second ring.. 125 N 150 mx bikes your a time bomb after 20 hours I've seen lots of piston skirts start to fold inward. racing 2 strokes since 1980 I've seen my share of pistons
One has to remember the difference in racing or one to last for a while.. Heat is the number one killer of all engines. You have to be able to control the heat and get all the power from it at the same time.. remember 70% of the lost is thru heat..
designed to fail. chinese scooters :), had one, it was comedy to see how part after part said goodbye, funny thing is tho it was cheap to bye, it was the most expensive scooter ive ever ridden, all the time it went back and forth the workshop :). and since it was worth litteraly nothing because everything broke down, it had zero secondhand value, and this due to two years of riding.
"Totally unnecessary to get your point across" - in your opinion. It's my video and total necessary. Stop being such a fucking girl, they're words and man up.
Designing any 2stroke to fail is easy as they do it now days . Look any the majority of any weed eater , lawn mower , chainsaw, ECT and look at why they don't run anymore and then look at the muffler. A good share of machines die due to over heating . The mufflers are made to keep them really quite and to due this ( as far as I understand ) it is choked out . This is one way to design something to fail. I could keep going and going.
Piston rings add to wear and tear of the cylinder and use energy in doing so, I always run my engines with no piston rings, In fact the weight of the piston is also lost energy so i intend to run my engines with no pistons in future thus 0 wear on the bores.
what?
69waveydavey you're funny 😅
Massive gains in fuel economy..
In fact I've given some further thought and if you make a piston out of something really slippy, say for instance ice, surely it would make for more efficiency thus more power and fuel savings.
Silicon pistons, what could possibly go wrong ;)
Single piston spring pistons are usually for high rpm racing applications.
Some 70 or 90cc scooters for example, rev up to 16.000 rpm and have up to 35hp.
Those are serviced after every race hehe. For daily use double rings are better :P
Also having good quality oil helps sealing off compression abit.
Kawasaki released a "race workshop manual" for their ZXR400, that included the mods to do to the engine to spice it up a bit. In there they advise to remove one of the rings on each piston. Not making any claims here, just thought it was worth a mention.
Most issues with washing machines is that the electronics give out faster than they used to, on our washing machine we replaced a power capacitor for the engine with the "correctly" specced one, broke a couple months later. So then we bought an over specced (by like 20% voltage and a couple % capacitance because that was what we could find), 8 years later and it still runs perfectly.
So there's some truth to things "being designed" to break, but mostly it comes down to underspecced parts
my yz125 has a single ring as do most 125 2t dirtbikes. The thing that sucks about them is obviously topend rebuilds come up quite a bit sooner than the 200, 250, and 300+cc 2t bikes (of course being small and revving to the moon for a 2t contributes too). But I know it reduces a bit of drag to increase the hp a bit, it is impressive these 125 bikes are putting out round about 40hp in such a nice light package. As always thanks for the video!
I have a 100cc 2-stroke and it has 3 rings..why 3?
Wow Matt, who makes the washing machine that can suck me off. I'd like to buy one. 😂😂😂😂
🤣🤣🤣🤣 at least someone talks sence on RUclips, definitely subscribed 👍👊
come on Matt, Moto man is a legend in his own time, sorry I meant his own mind.
LMAO
Tuner tip of the day:
You don't want the piston gap to be bigger on the top ring vs the gap on the lower ring.
Equal measured gap is ok because top ring expands more.
Trapped pressure between the two could make the top ring float att TDC.
I was taught it's better to have the bottom ring open more than the top to prevent flutter at higher rpms.
love the rant about quality and price of washing machines, i work in IT repairs and get people coming to me with poor quality cheap equipment, not using them correctly, and wondering why they aren't getting years out of them, and thinking theres some conspiracy about companies engineering failure into electronics, some muppet today who said the exact same thing about washing machines. I told him the same thing about how hard it would be to engineer failure into equipment, he wouldn't have it. Psssh
sweet mate
im a die hard fan of the work shop mate
your vids are really helpful matt and i have learnt alot
keep up the good work lad
Cheers for the comment dude - now fuck off! lol only joking - or am I?
one ring to rule them all. can you do a video on nikasil linings. what are the pros and cons?? i work in a bike garage and have seen many nikasil coatings flake off the cylinder walls even though the piston rings and piston seem to be ok. the worst i've seen was on a polaris jet ski. it was a 750cc turbocharged unit. surely a steel liner would have been better in the engine considering is pumps out an astonishing 143hp. cheers
Yes I can ATTL - matt
Hi Matt.
I'm a simple Mopedtuner, and I heard, that a one ring piston is made to produce more rpm, and a two ring piston is made to produce more torque.
Can you confirm that?
More on this at the weekend - matt
Where can I buy the washing machine that sucks me off?
Ok Matt, I know this is supposed to be a bike channel, but now you have to build the "suck-u-off" washing machine. I'm sure there are some people that would pay handsomely for a his and her version. 😂🤣😂🤣😂🤦🏻♂️
Can you make a video about how to properly jet a carburetor on a 2-stroke ? If you Forexample upgrade your exhaust.
(Yamaha RD350R YPVS) (:
Already on the list dude - matt
Thanks for the video, but I hear people say 1 ring gives you more top end while 2 rings will give you a smoother powerband. What can you say about this?
Kuruma Designs I personally believe they're probably associating that to the characteristics of the engines that typically have twin or single rings. For instance 125's pretty much all have single rings and are very peaky bikes with a small window of about 2k to 2,500 rpm worth of powerband, where as the 200, 250, and 300s which are generally twin ring have a much wider powerband. The Honda 250 2t's were single ring and they didn't behave much different than the other manufacturers 250 2t's, they were great bikes but didn't seem to have any advantage.
Hmm, maybe. But I know for example ktm 125 exc has two rings and they have a pretty smooth powerband, while my friends husky cr 144 is single ring and hits hard on top. But one is an enduro bike and the other is a motocross bike so the differences may be in the porting of the cylinders rather then the number of rings.
Kuruma Designs it has a smooth powerband because it has a flywheel weight.
I don't belive that the only thing that is affecting it is the weight of the flywheel, surely it must have something to do with the port map as well.
For example I have a moped with a 80cc racing cylinder, and it has a single ring piston. I also have a race exhaust and stock ignition with a pretty big heavy flywheel. And this moped is very peaky, hits powerband at about 9krpm and carrys on until about 12-13krpm.
Hi Matt thanks for the link. So just to re-iterate it's mainly about heat transference? There's no difference in compression? Are dual ring piston kits stronger? Cheers.
Firction and heat transfer. Why would compression be any different? If you mean blow by, you're talking about a 2 stroke - not exactly a great sealing engine
1 ring is use for very high end high rev machines. It comes in handy to reduce friction and thus temperatures.2 rings are used in more endurance optimised engines, lower revs often to get the highest torque they can get. Also in low revs the temperature ain´t much of a problem.The thickness of 2 rings makes sure they last a lot longer then a single 0.8mm ring. So it is all up to your application and specially keeping the eye on maintainance.I personally love 2 ring cast iron with a lot of torque. With plate instead of resonance exhausts. It has all the torque right from the get go, is much cheaper then nicasil shit, much better fuel economy and on the street there is no difference to the racing 16 old . And if it shits the bed, you still can get home with a cilinder wall in moonshape and a spare old piston.
erm..... reduced friction and therefroe heat? Wrong.
@@thedirtyworkshop I got the lesson it reduces heat in high rpm cylinders, but im eager to learn about other opinions.In what the dssc riders are telling me that is the main reason to go for 1 ring and alu/nicasil shit that breaks after the first seize.
So a few things are happening here....
1 ring applying pressure to a cylinder wall is less friction than 2 rings, this is true. However, about 45% of piston heat is transfered through the top ring and 20% of the heat through the 2nd ring, with the second ring missing the heat flux is higher through the top ring.
This means that top single rings usually run hotter than a cylinder with 2. This is why single rings are usually chromoly or some other alloy blend. 2 rings last longer because there's less stress on the top ring, the ring that does most of the sealing.
@@thedirtyworkshop Sounds legit. Still on setups with 16000+ rpm they choose 1 ring and they are always talking about heatseaze problems with 2 rings.For me it is kinda nothing cause my vespa only runs like 9000rpm at max.Still it is very interesting to see some racers blow up their stuff in 5minutes.
I've seen 1 ring on a lot of kits from rebuilding my kids bikes.Maybe it makes it less prone to heat seize when you throttle off with the reduced friction ?
well I got a question kinda weird since im commenting on a 3 year old video but I have a dual piston ring and 1 of them broke can I still drive it
In power tools (especially consumer grade) the component has been engineered to be as inexpensive as possible to produce while only having to outlive the warranty (even by just one day). Otherwise they have to make the warranty more expensive to pursue (either monetarily or time wise).
"to produce while only having to outlive the warranty (even by just one day)."
- bollocks. So what your saying it that on thurday (day before warranty runs out) its fine. Saturday comes and it dies - bollocks. Lets take a cordless drill. Warranty 2 years, I don't use it until the last day of warranty and then it dies the day after from 1 hours use - fucking rubbish.
not from lack of use obviously just like old new stock isn't shit out of the box unless it was stored improperly. No what i was saying is that under intended use that is within what the warranty covers (many consumer grade power tools specify not for industrial use ) it will survive the warranty period. it even applies to stand by items that are in an always ready state like say a sump pump it only needs to be built to withstand intended use until the warranty is up if it only gets used four or five times in that year or two and is found to be seized just the day after the warranty ends then the company got it perfect (from a corporate standpoint) but if it dies before the warranty is up they just lost money and if it lasts twice as long they technically lost money on the replacement that would have been bought.
I can smell the crumpets and bullshit from here try harder next time lass
can you do a video on warming up a 2 stroke dirt bike matt please mate
No - lol yes mate, already on the list
My question that has nothing to do with the video: what do you think about tesla (model s p100d which needs 2,4 from 0-60)
agree Matt you only gets what you pay for
Are you from Leeds or Sheffield that neck of the woods
the ring pins are 180 degrees apart, better sealing ? I wouldnt do it, you need all the oil on the ycylinder as you can get with out alot of smoke.
\
interesting, i don't think i've ever seen a 2T piston with only one ring. all the kits i've seen all had two.
Daniël Windstra i just bought a Athena 70cc racing cylinder for my 50cc 2stroke moped and it has one piston ring:) altough i have never seen a 125cc 2stroke dirtbike or other 2stroke 125cc bike with one piston ring
I was just looking at a webshop for tuning scooters and mopeds and most of the kits have one ring, they don't seem impossible to find though.
Insane o5mo ktm exc and sx all have 1 ring
ACreativeName Oh, I didn't know that. Ktm exc and sx both have powerful engines to be 125cc so I think the yamaha yz and for example honda cr could also have 1 piston ring. I am not sure about that though
Insane o5mo btw i also have airsal 70 on a derbi and it has 1 ring :)
Hiya matt, could you do a video about rotary inlet valves since we're on the subject of 2T anyways? I have an acquintance who once built one for his zundapp.
Already on the list
Don't take my word for it but I think the Yamaha crosses 125 have single piston rings but the TM racing bikes use a Yamaha engine and I think they have to piston rings not sure though
you can tell with electronic boards where they make them last for so long . TV sets are fine, ish
Can make a video about steel sleeves vs Nikel plated please.Thanks
Already on the list
What about 3 ring pistons in high torque low revving high compression 2 strokes??
The third ring is a oil scraper only needed for 4 strokes
Generally speaking, road 2 strokes have 2 rings, off road and MX 2 stroke single 1 ring, having to swap rings on a 2 stroke twin is a hassle, for an off road single it takes minutes. If they used single rings in multi cycle road bikes buyers would go nuts about having the change rings as often as off road bikes do. But that is assumption from experience only, i rebuilt more bike engines as a mechanic than I've had hot breakfasts and I've never found any other reason for the difference other than 2 rings lasts longer and off road and race bikes a re-ring is a quick job and road bikes not so quick.
"and I've never found any other reason for the difference other than 2 rings lasts longer and off road and race bikes a re-ring is a quick job and road bikes not so quick."
- it depends on
1) what the engine is intended for
2) thermal loading, etc etc etc
Rebuilding and the number of rings/cost has nothing to do with it. The manufacturer doesn't care and how many rings it had isn't a selling point. You have to crack the engine open to find out how many rings it has, or look in the manual
I Make and Fix Stuff my yz 250 has 2 rings
Ill do a bit more research. Going on memory and previous debates on this issue.
Larger capacity usually do, I think I covered that.
I Make and Fix Stuff oh idk, I just felt like telling you
Cambelts don't have to be designed to fail, they are a failure to begin with. Don't get me onto washing machines and sealed drums, then no vent between bearings so will always try to suck cool moist air past seal with temperature change.
Replacement pistons for my gas gas trials bike have 1 or 2 rings fuck knows why you get to pick and choose from factory, 125cc two stroke
That is one pissed off blackbird.
Great. Now you have to tell 12,000 people where the magical sucky sucky washing machine can be purchased for domestic use.
3:17 tongue wow wtf ??
hah xD i liked
On the subject of washing machines now!!!
The only 2000 dollar washing machine today that will last 50 years, is a commercial coin operated type they have at the laundromat.
Any wizbang thousands of dollars wifi enabled garbage, that have failures within months of purchasing, not "5 years".
Just about washing machines
The biggest reason they fail is because people overloading them lol
My mum has sworn by it and her washing machine was bought in 2001
Very true, that's what I meant by demanding too much from it
well, husqvarna uses 1 ring, and i can not complain about it.
the new saws come with an internal lil computer , so we can read the operating hours.
after 1500 workhours actually the ring was fine, but the main bearings where worn out to the point when i prefer them replaced.
soo.. i thnk a single ring is fine, husqvarna is a quite respected maker of chainsaws and stuff..
so if you sortha ask me, 1 ring is perfectly enough. keep in mind chainsaws operate (at least in professional use) under verry harsh conditions, and heat managment is quite a difficult task since the saws have to be light, rev high, have huge power for the weight, and space is verry limited. allso we do like to utilise most of the power they make.
now 1500 hours under these conditions is proof enough for me, think about your bike, take say.. 80% of its top speed and calculate how far would you get with that speed in 1500 hours. say.. a scooter doing 50 km /hr would do 75000 km or ~46000 miles, or just for you island dwelling folks ~82 million yards.
its enough.
I get what you mean, but your scaling is incorrect. More on this in the a future video - matt
The Workshop
yep, incorrect scaling. but still 1 ring is durable enough.
Are you talking a one cylinder 2stroke or multi pistons sharing a case? One cylinder one ring. Multi cylinders shared case two rings depending on configuration. Some configurations of multi piston 2 strokes are better for one ring. Keep it simple stupid. Some engines you will see increased plug fouling with 2 rings. A one ring piston may help by letting more blow by.
another vid where no one mentions ring flutter. hmm. that is the biggest advantage of running the correct piston for your motor design.
"another vid where no one mentions ring flutter."
- because ring flutter is a thing of the past in most cases. Most rings are thinner these days which means they have lower inertia. It would be like doing loads of videos on points.
understood but the mass has more to do with the point of flutter than ring thickness now adays. good video, didnt mean the negative, just watched several already and no one mentioned that aspect and it surprsed me, thats all.
referring to your girlfriend as a "washing machine" is not very smart JS
My washing machine has lasted longer than my piston.
any 2 strokes you want to the rings to last longer like on a ktm exc you want 2 rings... sx150 that you race 10 hours and replace the piston and rings why bother with a second ring.. 125 N 150 mx bikes your a time bomb after 20 hours I've seen lots of piston skirts start to fold inward. racing 2 strokes since 1980 I've seen my share of pistons
How the fuck...., can we argue on this vid.....? make a nother one
One has to remember the difference in racing or one to last for a while.. Heat is the number one killer of all engines. You have to be able to control the heat and get all the power from it at the same time.. remember 70% of the lost is thru heat..
one ring a ding !
designed to fail. chinese scooters :), had one, it was comedy to see how part after part said goodbye, funny thing is tho it was cheap to bye, it was the most expensive scooter ive ever ridden, all the time it went back and forth the workshop :). and since it was worth litteraly nothing because everything broke down, it had zero secondhand value, and this due to two years of riding.
think your mistaking the washing machine for the mrs lol
Smart phones are design to break,
it takes only one drop to fuck the whole thing up. What happened to having a nice brick in your back pocket.
Anthony Cate wrong
DoobieR smartphones are crap for durability. They are designed to last for 2 years.
Holy crap dude what about the piston rings???.....🤣
haha xD freaking refference from motoman
Why do you have to be a foul mouth informer. Totally unnecessary to get your point across
"Totally unnecessary to get your point across"
- in your opinion. It's my video and total necessary. Stop being such a fucking girl, they're words and man up.
Designing any 2stroke to fail is easy as they do it now days . Look any the majority of any weed eater , lawn mower , chainsaw, ECT and look at why they don't run anymore and then look at the muffler. A good share of machines die due to over heating . The mufflers are made to keep them really quite and to due this ( as far as I understand ) it is choked out . This is one way to design something to fail. I could keep going and going.