30$ Motorcycle Dyno
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- čas přidán 20. 02. 2018
- I wanted to tune my little race bike, nearest dyno shop quoted me 700$ for a full tune.
I looked them dead in the eye and said " For that money, Ill make my own Dyno, with black jack... and hookers"
It was even cheaper then I could have possibly imagined.
Software:
sites.google.com/site/simpled...
Two StrokeStuffing Channel:
/ @2strokestuffing
Ardyno PCB:
ardyno.weebly.com
Arduino:
www.amazon.com/Elegoo-EL-CB-0...
Hall Sensor:
www.ebay.com/itm/Hall-Effect-... - Zábava
![DIY Hub Dyno: Introduction [1]](http://i.ytimg.com/vi/_O0IQ4RY5pc/mqdefault.jpg)
![DIY Torquemeter - How to measure torque! [Arduino & 3D Printed]](http://i.ytimg.com/vi/NIpspXaPVcs/mqdefault.jpg)
The run time is way to short to get a good result, because the tire is to light. You need a ~300kg Axle to get a run time of ~8sec to have a clear, useable result. This one is cool and cheap but not really useable.
The item you calculate the MOI for needs to be the predominant load placed on the engine .
While the rear wheel works, and gives a figure somewhere near reality, it’s just not right, as the gearbox and flywheel are still playing a large part.
When a heavier ‘wheel’ is used it’s not that it places more load on the engine, but more that your ‘known’ mass becomes the predominant determining factor for the rate of acceleration, reducing the effect of unknowns.
Awesome effort for $30.
A safe sturdy heavy rear wheel would be great.
Heya, great video, thanks :) I'm wondering how you got on with this system longer term. I'm looking to build something similar.
are you kidding me omg.....dude show the world how this is done....lol omg..that was amazing
thank you so much brother...👍👍👍👍 briliant ide
This is interesting, never thought this was possible on a budget. lol
But wirh the ardyno i would have to solder, or is ready out of the box?
Love these types of videos.
thanks man, been very busy with work but I will make more
can you make a video how to dawnload the software
Hello, Im working on my dyno with ardyno pcb too, but I have not roller rpm signal, can you help me?
Can we use this for bldc motor testing ??
Nice power run 😅
-that is cool-
Thank you very much for the video! i was planning to build a small dyno like the guy of 2stroke stuffing. Your solution looks very promising since i dont need space to store the machine. But after your results i believe the numbers are a little bit too high for a 125? even if it is tuned. i would love if you test your bike in other Dyno to verify the results. Thank you a lot again!
For me 13kw seems reasonable for a tuned 125 4 stroke, atleast because in finland 125 bikes are legally allowed to do 11kw
Hello, how do you calculate the moment of inertia of your wheel and how do you set up parameters in the software?
The Simple Dyno software will calculate the MOI if you input the parameters of your roller or rotating mass. Pretty cool, and straightforward. Check out some youtube videos on the software if you need help.
good morning
,at the beginning of the video shown two arduinos, but when I was already connected to the motorcycle and the pc only use done, it takes two? Tank you
At the beginning you see an arduino with "sheild", not two arduinos. You need an arduino and an ardyno sheild, link in the description
How do you find the accuracy of the inertia dyno with simpledyno? I'm reading much lower hp than I should be.
I'd calculate it by and and verify it empirically if possible to determine where your error is
blog.oureducation.in/moment-of-inertia-of-a-flywheel-by-falling-weight-method/
Do you know anywhere we could get the ardyno pcb that would work for this setup? Thank you!!! Very smart brother!
ardyno.weebly.com
More info in description
Do u have a software and kit
Where can I buy this....?
Do you have a shop for this materials
Hi do you still have the simple dyno software?
Please can your share software sir 🙏
can you share the software with me sir
How can you calculate hp without having a figure for the inertia of the wheel? And given how quickly the engine revved up you’re probably putting more power into the engine flywheel than the rear wheel
They Dyno software requires you to calculate the Moment of Inertia for your rotating mass in order to work, I didnt show this in the video. Torque is equal to your rotational acceleration multiplied by the moment of inertia for the spinning object (the wheel). Once you have the torque you can figure out the HP with the engine RPM.
The dyno software requires an MOI calculation to work. I calculated the MOI of the rear wheel for this setup
@@Pretko99 But if the software only uses the wheel MMOI, then the torque is going to be off because you dont include the other rotating masses inside the motorcycle right? So say the wheel has the same MMOI as the internal rotating masses combined. So 50/50. Then if you only include the wheel MMOI you calculated torque is going to be twice as high right? Or does the software also include an estimation of the MMOI of the internal parts (like flywheel etc)
@@charliebogaerts7725 think of the engine and the rotating mass, which in this case is the rear wheel, as two seperate systems. If you calculate the torque being applied to the rotating mass with a known MOI by measuring its acceleration, you can measure the force acting on it. This is how many dynos work.
The internal engine components that are rotating all have their own MOIs, but that is not what we are trying to calculate, we are trying to measure its total force output.
@@Pretko99 Mmm oke so you at no point during this test you deal with engine part MMOI's in any way then? No calculations or estimations?
I just kind of doubt how accurate the torque results are this way. Say Id sneak in your garage at night and secretly change out the current flywheel with a flywheel thats 100 times as heavy. Then if you would do the same test next day as you do in the video, wouldnt you agee that the wheel would take way longer to spin up? Im not sure if you can make the assumption that all the torque of the engine is used to spin up the wheel while in reality part of that torque is used to spin up the engine and flywheel itself. But cool project nonetheless
Bro software link please
can you teach me how to setup com port calibration
instructions on how to do that are included in the simple dyno software download
Alguien de argentina? Que sepa donde conceguir la plaqueta
soft ware can not download you help send sotf ware give me for education ?
You need a load on the engine
@@yashiroku not advising it or saying its smart but could you just apply the rear brake for load for free ??
@@r2c479brakepads and rotors aint cheap...LOL
The rear wheel is the load, you input is moment of inertia into the software. Once you know that you can very accurately measure the force on the wheel as you measure its acceleration
It is called INERTIA DYNOMOMETER u freak!!..The LOAD is the madda pakking weight of the roller..and must have an RPM sensor with it for the software to acquire the Time and speed the Motorcycle can rotate the ROLLER..
Do you sell it?
Please ,Can you send me software at email? I would like to download it, but it seems somethink wrong happen. Page havent been found. I dont know what to do.
NO WAY???
What is a sofware link...is broken 404
this is power without load you need to find a way to put that in your back pack
hi can you give me the code arduino
? thank
I give this a B for effort and a solid F for understanding what a dyno does and how it's used in the tuning process.
I think you need to re take physics 101 haha. Tourqe = moment of inertia x angular acceleration. Once you have tourque you can accurately calculate horsepower. Which is what is happening in this video. If you dont understand I'm happy to explain further
en.m.wikiversity.org/wiki/Torque_and_angular_acceleration
As someone who uses a chassis dyno near daily, I'm very aware of how an inertia dyno works. You essentially built a crude pickup for one.
What you're missing is the extra inertia of the bike and the rider (and to a lesser extent the wind resistance based on speed).
There is a reason motorcycle dynos have a heavy ass drum in them to stimulate the inertia from the weight of the bike and the rider.
Power output of a gas engine will vary a lot with load and since you're essentially just free revving the engine with its "default" amount of inertial load the data you're getting is useless beyond making a cool looking plot on a computer.
If you really wanted to do something with your contraption you could plot the acceleration of the bike on a flat peice of road, across an rpm range, make changes and repeat to see if there were any gains or losses. That's basically what a vbox or draggy does but with a fast GPS instead of wheel speed sensor.
@@computerjlt my guess is He is just showing a very basic way to only estimate power/torque.
It's cheap to build,and not difficult to understand what the thing will do and not do.
It's certainly cost effective for the folks who don't have a few hundred bucks to spend at a speed shop
I would rather take my bike to a speed shop and have them dyno and tune the bike...but I'm not running at Daytona or the Isle of Man TT...I'm just looking to squeeze better efficiency from what I'm running,and this contraption will probably get me pointed in the right direction
Then just put the fucker on a heavier axle and stop trying to be correct you act like you can’t put it on anything else and just want to argue with someone trying to help the little guy like me becuase you work at a speed shop with a actual Dyno and think you know everything I HAVE A 80CC IM NOT GONNA SEND IT TO A FUCKING SPEED SHOP
You need calculate the MOI of your flywheel. And none can calculate the MOi of a rear-wheel, a thick disk of uniform and known naterial is much easier... If you take the valve-cap o the tyre off, now the rear-wheel has a different MOI, not because of the valve-cap-weight, but of where this valve-cap was on the rear-tyte... Forget the rear-wheel, get a simple flywheel, in the form of a metal disk.
How I can get the sofware?
Link is in the description: sites.google.com/site/simpledyno/home
do a full 9,000 rpm run and shift to top gear to figure out a base line …..then shift it back to stock since I see you have airfilter mod and exhaust already
Im planning on doing a comparison to a stock razkull as well as a grom in the future.
this is quite cool but not really accurate since the "roller" (rear wheel) is so light weight. i am trying to find big electric motor to make dyno myself.
late you dont need Electric motor, only Heavy round object. But if really nececary a car blower will work perfect:))
It's not so much that the dyno would be inaccurate, as it is that the engine will run differently under load. In an ideal world you would be able to simulate inertia of bike and rider, rolling resistance, resistance of air, etc. This is not an ideal world, but some kind of controllable resistance(breaking) sure would be useful IF you can measure/apply that resistance with some degree of precision and accuracy. For $30 though.... A clever person could probably find some dead weight for pretty much nothing.
i want to pick your brain about this next time your at Sandyhook...
Hey can you please tell me where can buy this ......?
Links for everything are in the description.
@@Pretko99 Thanks a lot my friend....!!
bro. put the rpm sensor on an aux cord and use symple dyno free.
safe 20 bux, (u need a pc) ( u plug the aux cord in ur pc)
or u can tell me wy this is bether
do another vid plz....
Thanks for your support, I've been busy with work but I'll work on something.
link of aoftware is not found......
Looks like they took down the site :(
How to measure the torque？
Rotational torque is calculated by multiplying the acceleration of the spinning object by its moment of inertia. The sensor calculates the acceleration and the software has you input the details for it to calculate the moment of inertia. The software will then calculate the torque and it can use the engine RPM sensor to then calculate horsepower.
new texta : $1.37
yep even efi is cheap and good Q.1ST a brain microsquirrt or speeduno efi ard i know speellling is um off lol n oh those 3000hp fuel cars use speed n math to state hp n tq heck known automatic trans-slush boxs losses n a android app car weight bla bla can get as close as a dyno go to 2 different shops test on two types of machines get 2 different numbers ...700 bucks is nuts thats like a turbo tune for a supra gm or may be a crotch rocket ..dept is the cause of high prices
Give me this product
Hallo sir
Any email I can contact you?
Thanks
so this bike really makes around 18 HP ?
about 10HP, I had an incorrect parameter in the software
@@Pretko99 WOW, so you were able to get good results from this gadget...
That's No Good. No LOAD on the Bike. Tires need to spin as if on the road, thats why dynos have a rolling surface for the tire to create load.
Torque= angular acceleration x moment if inertia of rotating mass.
It dosent matter if the rotating mass is large (dyno roller) or small (in this case rear wheel). If you know the moment of inertia and can accurately measure the angular acceleration you can accurately measure the force coming from the motor
@@Pretko99 The experts disagree. Consider this article on breaking in the engine: www.mototuneusa.com/break_in_secrets.htm It says about trying to do this as opposed to using a proper dyno: What about running it in the garage ???
Maybe you have a new snowmobile and it's not quite winter yet, or a new bike and it's snowing...
The temptation to fire up a new vehicle in the garage just to "hear"
the new engine run can be very strong.
This is the worst thing for a new engine, in fact, my advice is:
don't even start it up until you're ready to warm it up for the first ride.
The reason is that brand-new rings don't seat all the way around the 360 degrees of their circumference. The gas pressure from hard acceleration forces the rings to contact the cylinder around their entire circumference, which is the only way the rings can properly wear into the exact shape of the cylinder to seal the combustion pressure.
Now, imagine if the engine is run in the garage. There is no load on the engine, so the rings are just going up and down "along for the ride". Only a small portion of their surface is actually contacting the cylinder wall. The ring area that does contact the cylinder wears down the roughness of the honing pattern on the cylinder walls. Once the roughness of the cylinder is gone, the rings stop wearing into the cylinder. If this happens before the entire ring has worn into the cylinder and sealed, you will have a slow engine no matter how hard it gets ridden after that point.
The difference between what happens in an engine running in the garage, versus one being ridden is a hard concept to put into written words, so if I may use the sounds that we all can relate to: it's the difference between "zing-zing-zing" and "bwaaaaaaaaaAAAAAA"
During "zing-zing-zing" the rings don't get loaded for more than a split second, whereas during "bwaaaaaAAAAAA", the engine is in 100% ring sealing mode.
There is no load on the drivetrain people. This is nowhere near accurate
If you can accurately calculate the moment of inertia of the rear wheel you can easily calculate the force output of the motor. The rear wheel is the load, it does not matter if the load is small, if you can accurately measure it you can accurately calculate force, its just math, rotational force or Torque=MOI X Acceleration.
@@Pretko99 so bikes don't have load sensors that increase the amount of fuel delivery?
EDIT: also forgot to mention, this wont be accurate for the reason that, say for example one engine has slightly lighter components than the other, that will show up as additional torque - which it is not, it is the reduction of the mass variable in the equation A=F/M, not the increase in force, but the computer doesn't realize this.
There is a load on the drive-train, the rear wheel has a moment of inertia of 0.028 kg.m^2. This number is large enough to measure the force of the engine. However, you are correct, this dyno is not accurate, it is not intended to be. It is very precise, as it takes measurements 9,600 times a second. I don't care if my dyno is accurate, as it might read 8HP while another one might read 7, or 12, but I do want it to be precise, because if I measure an increase in power then that means I am tuning the bike correctly, a 20% increase in power on this dyno would be a 20% increase in power on another.
@@MrAndrius12 you would have to define what you mean by load sensor. I assume you are talking about something that would measure the weight of the rider to adjust for the load on the engine? If thats what you are saying then to my knowledge motorcycles do not have that.
In regards to your second comment, we are measuring the acceleration of the rear wheel which has a constant mass, so if you were to swap motors for one with less rotating mass but the same power, the dyno measurement would read the same.
@@Pretko99 yeah but think of it as such: linear force gets converted to torque due to the crankshaft being attached to the piston by conrods, the torque rotates the engine components + drivetrain + wheel by rA=I(inertia of ALL the above components)/T meaning that theoretically a change in engine internals could still read as an increase in torque.
Another CZcams dreaming BS !!! 😴