Dyno Definition and 18 Threads

Hello everybody this is my first time posting here hope i am doing it right (sorry if english is bad) I had a new project for a moped (bike) tuning idee I want to make a dyno to see how much power my bike gives. My idea was to use a motor from a wasmachine and use it as the dyno power sourche...

Hi, I have to measure the HP of a small engine at the crankshaft. The only usable things are. A dinamometer A brake disk An rpm meter The brake caliper is floating so when we apply de load it pull the dinamometer. The rpm meter show the revolution during the load apply. It can works? How I...

I would like to know if this formulae i have are good enough to make calculations. My plan is to count time of each roll with Arduino.I don't have roller yet so i don't know moment of inertia.angular acceleration = radians/secounds TORQUE = moment of inertia (kg∙m2) * angular acceleration RPM =...

A high-performance diesel engine explodes into pieces while being run on a dyno test.

I did a thread a long while back and I was like really confused because one group was saying it is and another said no. This was bouncing off different sites and I believe I now know why I was having a hard time. I believe the information I am looking for may be rare. I understand it much...

Hi all, I have the raw data in .csv file which has Engine speed, wheel torque value and main shaft speed (Please refer to below image - raw data_screen shot) I have to find the logic for the above raw data, to get 1.5 order wheel torque value, which is close to resulted value as attached...

If the selected gear ratio and final drive ratio multiply the torque and reduce the speed then why does the dyno read less torque? e.g a car with 200 Nm (@5000 RPM) of torque with a 2nd gear selected (Ratio = 2) and final drive ratio 3.5 200*2*3.5 = 1400 Nm of torque 5000/2/3.5 = 714.3 RPM...

Hi Everyone, I am building a hydro turbine, I am expecting it to produce circa 4 kw possibly as high as 7 kw depending on flow. I am on a very limited budget. Please could you suggest possible means of getting load output data? I have considered attaching a heavy truck 24 v alternator and doing...

I'm looking for someone who can help me calculate the torque there will be transferred to my couplings between the rollers and to my belt connecting the 2 set of rollers. I have drawings of it all including inventor pro 2011 drawings/file of it all putted together without the belt and couplings...

Hi all, I'm designing a 70Kw engine dyno and I'm thinking to use a friction brake with a pneumatic actuation. Which kind of brake system usually have such commercial engine dyno? Eddy current brake? Hydraulic one? Thanks

I am currently in the process of designing an engine dynamometer for a small engine. Maximum power of 1 KW @ 7000 RPM and a maximum torque of 1.6 Nm @ 5500 RPM. Here is my proposed method, but I have some concerns that I'll state below: Prony Brake Essentially a friction dyno, I would...

Hello again, I am currently designing a flywheel for a 745 KW engine inertia dyno. Basically my design requirements are so: Max RPM: 530 RPM (=55.5 rad/s) Flywheel Diameter: 1.7 meters Time needed to accelerate: 60 second (to max rpm) I need help determining the mass of the...

Hello, I got a question on auto engines. especially on Naturally Aspirated engines. I know that colder intake = more oxygen in the mixture, then the ecu will compensate that with more fuel, etc, etc, more power... But colder air will also result to less efficient atomization of fuel...

Here's what the plan is I need a dyno for a new engine development program. small displacement engines, 50cc some day up to 200cc+. I need comparative data engine to engine, tuning, proto components, etc.. this is all diy budget stuff please keep this in mind. I come from automotive and race...

Hi The company I work for has a Dyno room for tuning its engines before sale. Can someone advise me on an electronic noise retardant please? The room where the Dyno is situated is quite small and doesn't really have the ability to be lined with a material unless it were less that 25mm thick. Penn

Hi guys could you help. I am building a small engine dyno using an car alternator. MUT is rated 6.5kW. I was thinking of using the output from the alternator to power the laptop through an dc to ac inventor or heat loss through heat coils from hairdrier. How would i control the trottle feed...

I have a couple of questions about 2 cycle engines: 1) Can someone further explain “time-area” to me in regard to the 2 cycle engine porting? I do grasp the basic concept of time-area values and I do have a formula to calculate the time-area values for a 2 cycle engine however there is still...

Hi all, Firstly - I'm not a collage student but this seemed a good place to ask the question! Any help welcome :smile: As a fun home project, I've been building a motorcycle dyno, connected to a PC via a custom made PIC based device. Have most of it worked out with regards to data...