Kawasaki Ninja 125 | What Happens When You Remove The Muffler? (Experiment)
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- Опубліковано 26 вер 2024
- Welcome to our video testing the Kawasaki Ninja 125 without an exhaust silencer! In today's episode, we do a sound and ride test on the Ninja 125 without the muffler. Is it worth doing, or should you pay for an aftermarket slip on exhaust instead? Lets find out!
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End Credits:
Rip & Tear - Mick Gordon (DOOM 2016 Soundtrack)
Rip & Tear - The Anchor (Cover)
Thanks for watching.
I had this bike when I first started riding, I put a dominator full system on it and it actually sounded unreal for a 125. Shoots flames and pops and bangs in every gear. Was well fun when I was younger
yeah thats because you did not sort out the fuel to air mix lol
Which dominator did you have I have the GP slip on one, Was the catless one annyoingly loud?
Loud exhaust is a must, in my opinion, especially with the lack of drivers who actually use their mirrors and indicators these days. I run a gsxr k2 600 with a SP ENGINEERING slip-on exhaust, and it's loud, why, so car/van drivers know I'm there and don't just pull out on me using the excuse that they didn't see or hear me. Loud pipes save life's. 98db static- over 115db at 6000 rpm , can't say you didn't hear that 😂
Straight facts
When the car is in front of you he can't hear anything if he is in back of you you destroy his hear
@lerois1176 if I had a £1 for every car/van driver who's pulled out on me because their either on their phone or just not paying attention, I'd be a very rich man, especially with drivers who are on their phone's because their so thick they don't understand how dangerous it actually is, and they shouldn't be on the roads period. If/when I come across those drivers, I make myself very much known by the sound of my exhaust, they soon realise I'm there.
They can't hear you if they infront
@danielkerr4100 then why not both? Loud and seen?
I ride a 1200 Yamaha and the thing I hate is really noisy learner bikes. We all have to start somewhere but that sounds awful
Agreed
I ride a 125 and I can't lie. There's not alot of power at all there certainly not fast so I feel having the bike sound a bit louder adds to the experience which Is why I think more people do it. I still ride with the stock pipe but definitely giving a change
Yeah removing muffler is definitely not way to go. Slip on will provide sound without tanking performance. lol
Ive never really liked the sound of low cc singles without the exhaust. I think its probably the pitch being too high, when you have the larger singles they sound much better.
Edit. That being said if it puts a smile on your face then why not.
It's seems to sound better if the engine is in a very high state of tune. Maybe it's the higher compression. But in general you can hear these 125's struggling and the louder exhaust just makes it worse.
i think when i had a look at an akrapovic exhaust for my cbr 125 back in 2016/17 when i started riding and it said something like +0.4hp
More noise than power
Tell me you don't understand how pulse tuning works without telling me you don't understand how pulse tuning works.........😂
In fairness, it's "Goblin Rides", not "Goblin Tunes Exhausts", but still kinda funny
How does pulse tuning work?
If you want a 125 thats makes good power get a 2 stroke!
@@marcwilkinson3249 Pressure waves are kind of like waves in the sea. They go positive, then negative, they reflect off harsh changes in geometry and they affect the flow of gas.
In this case, we use the reflection from a big change in diameter, which occurs when pipe becomes air, to reflect a big chunk of the exhaust pulse wave. The hack is timing it so that the negative part of that pulse arrives just in time to help evacuate the cylinder properly. That'd be just before the exhaust valve shuts. That gets the most gas out of there, making the most room for fresh charge. Hence you get the most power.
In two stroke engines, there's a special chamber shaped like two horns stuck together at the fat end, which sets up this exact sort of pressure wave condition, except in those we want the positive part to be timed with the exhaust port, so it shoves the leaked charge back in the cylinder and provides a bit of extra compression.
This timing is sensitive to things like gas temperature (which will affect the local speed of sound), exhaust pipe temperature (which affects gas temperature), engine rpm (which dictates the reflection time _required_ for optimum operation) and valve timing (which should be set up to work with the pulses).
These things are generally tuned to operate for some preferred optimum power band. On a 600 supersport, that'll be tuned for maximum top end. On an MT-07 - for mid range. The effect is most pronounced with two stroke engines, as those have the least amount of mechanical control over the process. That's why they have such distinct power bands which drop off to almost nothing on either side.
Some systems aim for multiple peaks, to broaden the torque curve for a nice flat responce. Those will use multiple sources of reflection to achieve that. For example, a 4-2-1 pipe will naturally reflect in two places, plus the catalytic converter (if you don't de-cat), plus some resonance between the first (4->2) and second (2->1) joint (because reflections work both ways), plus maybe something off the muffler (depending on type). The joints will be most pronounced and will probably be what gets tuned. The resonance is weak (as pressure waves tend to dissipate), the cat is more of a hinderance (but needed for emissions) and the muffler is kind of far away, if it does anything at all (some are straight pipes with holes and noise damping rather than proper forced resonators). It's only this radical on the Ninja 125, because it's a single, so there are no big sudden changes in diameter until the end of the muffler (which vents to atmosphere).
@@JayDutch-UK-MK If ever I do go down that road, topic number 1 is going to be countersteering. Just so much nonsense about it out there...
Dat rubber duck tho... 🤣
...tremendous sense of humour! mate, charming y'man!🤣😁 thats why the vid was even more njoyable2watch!...👍🙌🙏lol, Bol...
To be honest I don't think people were going to phone the police it wasn't overly a bad noise you were been a bit innocent when it came to worrying about the police.But it sounded awful to be honest and nothing like a 2 stroke best keeping it on 👌💯
did this back in 2001 on my Suzuki TS-50, until the headmaster told me to sort it out.
I had a Dep sport on my TS50X
The exhaust, particularly the back box / muffler, whatever you choose to call it. Makes a considerable difference to the performance of a motorbike, especially smaller CC bikes. My experience is solely with 2 stroke bikes, so I can't attest to what the situation would be in relation to newer, more modern, 4 stroke bikes of any size engine.
A micron full pipe on a 2 stroke was night and day different. On a 4 stroke it would damb near no difference. If its louder its probably making less power.
@chrishart8548 absolutely, mate. Even with an extremely high-performance engine producing massive horsepower, professionally tuning to within an unheard of its life. The increase in performance from any exhaust is negligible at best.
I can attest to this also, years ago I put a custom made expansion chamber on my DT125R and mated it with a Dep end can that I generously packed with wadding. It flew compared to the standard exhaust.
One day the rubber coupling that mated them together blew open. Not only was it an embarrassingly loud journey home, but it struggled to hit 30mph. Pre-blowout it would go off the clocks at 80!😂😂
the innocence here :')
It sounds like a small bike without an exhaust, nothing like a race bike sound.
Get the black widow 400mm it sounds loud and pops and bangs like hell but it's designed that way so way much better than de muffling it like you said due to power loss, p.s your right the factory exhaust tail weighs a ton, probably as heavy as the bike 👀 keep up the great work with the videos pal 👌
The length of the pipes in the muffler will have been tuned for optimum scavanging to get you that last bit of power. If you replace it with a straight pipe of the same length, it should work fine engine-management-wise. She would gain all her power back. But she'll still sound downright silly. Not something I would personally do.
Yes exactly, pulse tuning and exhaust scavenging....
Sensible souls will see title and have to comment.
Sounds good compared to a regular 125, for sure a little obnoxious. One for fun days.
10:00 so nice.
The "muffler" 🤦🤦
That would look sweet with a custom underbelly exhaust, as soon as you removed that hideous muffler the appeal went of the Richter 😲
The engine reacts real slow blipping the throttle. Is that how it is with this bike or is there something wrong?
yep, because the lamba is confused
@@xHeaveny Why would the lambda sensor be confused, its not mounted in the muffler.
Just take the baffle out the end can and put the end can back on
What's a muffler?
dont do that if you are please set the fuel to air mix as you will need to
sounds like my ttr125 when straight piped lol
Sounds like a minibike
Sounds like my KTM
Plz lunch India 😢😢😢😢😢
Sounds pretty good for a 125 mate eh? Not as good as a two stroke mind like on my channel😂👌🏻
Yh these are pretty laughable there's a reason 2 stroke 125s race 250 4 strokes but nobody learns 😅
Sounds crap
Sounds absolutely awful .
125s in the uk are really not built for tall people , most who get a 125 in the uk are 17 and are 6ft or over tall , we flat foot and have a bend in our knees , the suspension compressed to much because of it , why cant there be a full size frame , tires exct and just a 125 engine?!
Love bikes / hate their obnoxious noise in today’s society. And for the cost of even .8 of a horsepower i would not do. That seems down 40% so ur running a Sinnis scooter 6.6hp their on a Kawashashitty go back to being quiet, reserved and legal. The L plates alone determine the engine size. Which look funky on the front 😏 stick to the stock. No one even knows ur face in a helmet. So leave the big boy noises to the men in the Nissan GTR’s
Its not a muffler its a silencer, more americanisms....
Why would you do that
Buy an aftermarket
SILENCER or can!!
i really wish they sell this in India
Goblin RIDES, You're fantastic! Let's be friends and have fun!
When I see people with this "haircut" working on something....
I once saw a guy take the whole system off a CBF125. Made it sound very silly 😅
Bit like a machine that spits out potatoes with compressed air (cartoon potato machinegun?) 🤣
I started my CBF125 without the system when I was fitting a new exhaust and it sounded like a bubble machine. Jumped a little bit because I didn't expect it to sound so comical or so loud.
@@medrautargus5131 Just hilarious 😅
always should be an aftermarket exhaust specific to the bike, so the pipe lengths and pressure is correct for the tune. Otherwise engine can overheat from a lean condition and runs like garbage.
sounds like the revs are hanging a bit , probably running to lean now ,
I bet its a fair bit slower like this.
cant try that on my 2022 cbf125 as the pipe joins up at the engine lol
☹
Yeah bad idea mate on fuel injection it messes up the air fuel mix and itll run hot ie lean and itll score the life out of the cylinder without a remapping. Ride it like this for any space of time and check the spark plug itll be white
Great videos and content
Anyone who drives a 4stroke 125 over a aprillia 125cc blows my mind 😅😅 these are so slow in comparison these bearly hit 80s aprillias live in the 120s
Lol I'm in a group ATM with 3 of them and it's pretty evenly matched and I have no fairings 😂 don't believe the hype and trust me IV had both 2stroke and 4 stroke anyone who tells you any different gets there information from UA-cam 😂
Sounds like a louder version of my Z, I got a GRmoto exhaust that still provides back pressure.