Hi pitobread, would you be able to share your calculation for the roller mass required? I am trying to build an inertia dyno for a 110hp motorcycle. what should the mass be approximately?
@@next_step9393 hello, no I haven't built it yet. I will not be building an inertia dyno anymore. I think the best way to go is a dyno with braking system. So the mass does not matter much. I am looking into hydraulic pump to use as braking force.
Calculation of mass of roller: Maximum force of acceleration of tire to asphalt surface: Fr = c * m * g --> Fr = 0.02 * 210 * 9.81 = 41.2N This is the maximum force the bike is allowed to accelerate with before the 210kg bike begins to skid and is not able to move forward. If the force is lower, then you are not accelerating at the maximum possible with the given road conditions. Maximum linear acceleration of the bike: F = m * a (Newton's 2nd law) at = 41.2 / 210 = 0.2 m/s^2 Calculation of roller mass (solid roller): (1) τ = I * a --> τ = 1/2*m*r^2 * at/r --> τ = 1/2*m*r*at (2) τ = F * r --> τ = F * r Substitute 1 into 2: F * r = 1/2*m*r*at --> m = 2*F/at --> m = 2 * 41.2 / 0.2 = 412kg So the roller should be 412kg
Hallo friend how much is you cylinder diastance ??, I'll start doing one like you when 50 hp I believe I will be fine , And if there is any easy way to communicate?
Hey man can you tell me the diameter and weight of the roller im going to be making one for my 100cc scooter not sure how much weight would i need for up to 50whp.
Hello ! I am also working on a project! I'm also working on a project like yours. I have PC like yours. I have PCB Ardyno designed by myself. I'm starting to work on the chassis and rollers. Please ask your weight, roller size is how much?
@@luisreneventura It is a bit weight and a bit roller diameter. You need the roller to be big enough that you don't have a crazy roller RPM when the bike wheel speed gets high. I would get 12"+ in diameter and 500+lbs but that's just a guess without putting pen to paper.
The roller you made was from a piece of equipment.What was it specifically before you had it machined and balanced? What are the dimensions and weight of it if you don't mind sharing! I have been looking for such a piece and it's driving me crazy trying to find something. I seen your large motor suggestion but trying to make my dyno look legit and also very safe. Thanks
Dunno what it was, it was just a large hunk of scrap steel from a machine I turned it down and added an axle to it. Electric motor is pretty safe, you have a nice enclosed balanced rotor....
Bearing size brother
how did you calculate Moment of inertia for the roller?
@@molecularconcept1318 that was on the old ardyno webpage which i dont think exists anymore.
Where are you guys getting these 300lb rollers
That was made from scrap.
Make friends at a local scrap yard and start hunting.
Where did you find the dyno roller? I don't think it's easy or cheap to find or maybe idk what to look for
Made it out of scrap
Very well done. Your scoot sounds great.
Hi pitobread, would you be able to share your calculation for the roller mass required?
I am trying to build an inertia dyno for a 110hp motorcycle. what should the mass be approximately?
hi shadow, are you build chasis? and Did you find the calculation?
@@next_step9393 hello, no I haven't built it yet. I will not be building an inertia dyno anymore. I think the best way to go is a dyno with braking system. So the mass does not matter much. I am looking into hydraulic pump to use as braking force.
Calculation of mass of roller:
Maximum force of acceleration of tire to asphalt surface:
Fr = c * m * g --> Fr = 0.02 * 210 * 9.81 = 41.2N
This is the maximum force the bike is allowed to accelerate with before the 210kg bike begins to skid and is not able to move forward. If the force is lower, then you are not accelerating at the maximum possible with the given road conditions.
Maximum linear acceleration of the bike:
F = m * a (Newton's 2nd law)
at = 41.2 / 210 = 0.2 m/s^2
Calculation of roller mass (solid roller):
(1) τ = I * a --> τ = 1/2*m*r^2 * at/r --> τ = 1/2*m*r*at
(2) τ = F * r --> τ = F * r
Substitute 1 into 2:
F * r = 1/2*m*r*at --> m = 2*F/at --> m = 2 * 41.2 / 0.2 = 412kg
So the roller should be 412kg
Hm for ardyno and software
Hi🙋Is it possible to manufacture wheeling machine ??
Not sure what you mean?
Hallo friend how much is you cylinder diastance ??, I'll start doing one like you when 50 hp I believe I will be fine , And if there is any easy way to communicate?
it was about 12"
niceeeeee :) another great video, i look forward to number 2 build video :) top work. big big fan from denmark
Hey man can you tell me the diameter and weight of the roller im going to be making one for my 100cc scooter not sure how much weight would i need for up to 50whp.
about 12" and 300lbs
Heya where did you get the mild steel roller?
Just a hunk of repurposed steel I put a shaft thru it.
Up to what kind of HP would this be rated?
I estimate around 50HP with how heavy the roller is.
can you connect air/fuel ratio sensor?
There is available channels for inputs of any kind
hello,Please tell me where to buy the dyno circuit
Not sure they are available anymore to buy!
Do you have the sofware? The link from 2T stuffing is broken unfortunately.
I can look i may have a backup
@@pitobread ty, I have found it. I can also give it to you now, if you need it or something.😀
hi, mario, are you build chasis? and Did you find the calculation?
@@next_step9393 I have found the software, but I do not know how to post my drive link to it because YT does not like links anymore.
Hello how much weight fot the roller
300lbs
Would you have a arduino shield that you would sell.
I don't, but it is a very basic circuit. It could be made on breadboard really easily. Good learning project!
Hello Where do you take dyno roller?
I made it.
Is it just an "accelerating dyno", or a retarder was installed later?
It is what is known as an intertia dyno.
@@pitobread Thank you! I didn't know they were a thing. (I believe you may find a clone somewhere over here... I'll look for the parts)
Thank you!
Hello ! I am also working on a project! I'm also working on a project like yours. I have PC like yours. I have PCB Ardyno designed by myself. I'm starting to work on the chassis and rollers. Please ask your weight, roller size is how much?
Roller is around 300lb, it is 11" in diameter x 14 ish inches long.
@@pitobread thank you ! facebook.com/profile.php?id=100009513605848
Hey would you sell a working Ardyno PCB?
Tryed to contact the ardyno guy but i think he doesnt do them anymore
Hey bro i cant order ardyno, can youi help me ? also the uploaded software is no where to found.. thanks
At this point it's basically make your own from the schematics.
Does this have any braking system for the drum?
No, you can just slow it down with the scooter brake.
Bro I’m trying to get the Ardyno Shield do you have any board to sale I need one
No, I have only one.
Where is part 2 ? Great project 👍
th-cam.com/video/zCRbfPq4W58/w-d-xo.html&ab_channel=Pitobread
Did you finished the proyect? What happend with Part 2?
Have not had time to complete the series. Real life keeps getting in the way.
@@pitobread any idea how big should the steel roller be for a dyno to handle big bikes like a Harley? How much should that steel roller weight?
@@luisreneventura It is a bit weight and a bit roller diameter. You need the roller to be big enough that you don't have a crazy roller RPM when the bike wheel speed gets high. I would get 12"+ in diameter and 500+lbs but that's just a guess without putting pen to paper.
Qual é o peso do rolo?
It was about 300 pounds
what is the total cost?
I probably spent, $400 bucks on stuff. I tried to scrounge as much stuff for free as I could and repurpose it.
how much dia for the roller
about 12"
How to buy India roller
Not sure, I dont live in India so don't know what is available there. Start looking in scrapyards.
How did you get the roller? Awesome project!
It is some re purposed industrial equipment. However you can use a large electric motor (50+ HP) for the big roller.
@@pitobread oké thank you for the information and the quick response what did the roller cost you if I might ask?
@@florisheuperman5048 It was Scrap, I got it for free along with all the steel for the frame and the top.
@@pitobread omg for free!? In the Netherlands I would need to pay big bucks
@@florisheuperman5048 A bunch of my friends work in different aspects of metalworking, we are always raiding the dumpsters!
What is the size of the roller?
11 diameter x 12 wide I think.
The roller you made was from a piece of equipment.What was it specifically before you had it machined and balanced? What are the dimensions and weight of it if you don't mind sharing! I have been looking for such a piece and it's driving me crazy trying to find something. I seen your large motor suggestion but trying to make my dyno look legit and also very safe. Thanks
Dunno what it was, it was just a large hunk of scrap steel from a machine I turned it down and added an axle to it.
Electric motor is pretty safe, you have a nice enclosed balanced rotor....
Can you give me a blueprint of your roller sir?
It's 12" × 11" diameter with a 2" shaft pushed thru it shrink fit.
Bro I need ur help
How can I help?
part 2???????????? dont see one!
There is, check my channel.
400x300
I want one, but I don’t need the information. I just wanted a roller with brake so I can tune my bike inside my garage 🥲
Big same!!! I have dyno jet with wide band…. Don’t need a dyno just wanna tune and not have to worry about traffic