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pisarodes
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Posted: Thu Jul 31st, 2008 10:11 am |
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Hi, friends.
I begin to seek information on how to manufacture a power meter engine.
Somebody knows how planes could be achieved, documentation of this project?
My intention is to understand the mechanical part as the electronic part I have the clear.
Regards
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aero
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Posted: Thu Jul 31st, 2008 11:44 am |
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If you google search what you are after you should find it.
I recently made a CDi box for an SR500 after lots of internet research. Its all out there, you just have to find it.
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clanger
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Posted: Thu Jul 31st, 2008 01:28 pm |
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Hi pisarodes,
I guess english is not your first language. I'm guessing you're talking about a dynamometer. Perhaps you could google that term and tell us if that are what you are seeking to make?
Regards Clanger
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Velton
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Posted: Thu Jul 31st, 2008 04:20 pm |
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clanger wrote: Hi pisarodes,
I guess english is not your first language. I'm guessing you're talking about a dynamometer. Perhaps you could google that term and tell us if that are what you are seeking to make?
Regards Clanger
Yes clanger, pisarodes introduced himself recently. 
pisarodes, do you mean a machine to measure the power from an engine? 
If not, then maybe explain what you are hoping to measure, and where it comes from. 
Last edited on Thu Jul 31st, 2008 04:22 pm by Velton
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pisarodes
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Posted: Fri Aug 1st, 2008 08:11 am |
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Hi friends,
Sorry for my english,
Clanger, Actually the English is not my first language, is a Spanish.
I want build a machine to measure the power from an engine.
Mainly the machine will have two parts:
- Electronic (this is ok, no problem for the build)
- Mechanical In this part I need drawings and diagrams for the build. I know parts of the machine.
I'm at the stage of searching for information.
Regards.
Sergio.
PD: Please accept, any correction on my English, help me to learn
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Velton
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Posted: Fri Aug 1st, 2008 11:27 am |
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Hi pisarodes, don't worry about your English.
I understand that you want to build your own dynamometer and that you need help with the plans for the mechanical parts - which will take the power from the engine - but that you can build the electronic part.
That is about all I understand - that is a project much bigger than anything I would even think of tackling. 
Please can anyone come up with some ideas to help?
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Aaaah.Nostalgia isn't what it used to be!
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NickR
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Posted: Fri Aug 1st, 2008 05:30 pm |
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Aero, Do you have the details for making the SR500 CDI?
Thanks
Nick
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LozExpat
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Posted: Sat Aug 2nd, 2008 06:01 pm |
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THis might be useful but was formally posted by an unwelcome Troll. In the interests of keeping the site useful. Here it is again, sans troll.
Weigh your bike and the rider you use to run it down a quarter mile standing start and note the terminal speed and elapsed time for this distance.
Then use this calculator to find your horsepower:
http://www.ajdesigner.com/fl_horsepower_elapsed_time/horsepower_elapsed_time.php
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integerspin
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Posted: Sat Aug 2nd, 2008 08:40 pm |
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I wouldn't have thought a dyno was that difficult to make.
You want an engine rotated mass and electonics to measure time and revolutions, It will need to be pretty accurate. You should be able to calculate torque from the acceleration.
I can think of at least one other way to do this, but it would require calibration, measuring acceleration of a known mass will be easier[:-)]
I think the key to this will be making measurments with sufficient accuracy. You need to calculate the best you can time the system and range of torque you going to put into it, from there you can probably decide on a suitable mass to give you a decent resolution with minimum errors.
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Velton
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Posted: Sun Aug 3rd, 2008 12:44 pm |
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This might be useful but was formally posted by an unwelcome Troll. In the interests of keeping the site useful. Here it is again, sans troll.
 
____________________
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Aaaah.Nostalgia isn't what it used to be!
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clanger
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Posted: Sun Aug 3rd, 2008 09:02 pm |
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Hi, your english is a lot better than my spanish, I just wanted to be sure wot you were saying..
In the perfect world I'd have a dyno in my garage, so despite the fact it's unlikely to happen, I take an armchair interest in them. There are lots of different types and loads of pros and cons. This wiki entry is fairly interesting.
http://en.wikipedia.org/wiki/Dynamometer
The big boys like Cosworth use electric motor types with sophisticated electronic systems, both to test engines in generator/dyno mode but also as motors to 'drive' transmission and drive train units. This way they can put a F1 gearbox thru 20 laps of Silverstone on the test bed. They also have regen features and the power generated in dyno mode is sold back to the national grid..
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pisarodes
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Posted: Mon Aug 4th, 2008 10:59 am |
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Hi friends,
I appreciate the interest that has sparked this project. It is a project that is interesting, yet difficult.
LozExpat your link is interesting, but for this application is possible run with excel program no? Anyway this link is interessting to take ideas for the control software of the machine.
For the calculate physical parameters, the wiki of Clamger is valid. For the calculate is valid any book of the matery Clamger don't worry for the language, I learn English with your and your learn spanish with me ok?? jeje.
I like that machine similar to that attached files. oK??
When the machine is built, that there will actually calibrate the device, as a good measuring apparatus that is. I am not very clear how to do it but as they realize the anger is doing construccion.
Regards
SergioAttachment: 2cen.pdf (Downloaded 6 times)
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pisarodes
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Posted: Mon Aug 4th, 2008 11:00 am |
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| And other file Attachment: 4ten.pdf (Downloaded 4 times)
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sportspecial
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Posted: Mon Aug 4th, 2008 06:19 pm |
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pisarodes wrote:
LozExpat your link is interesting,
Regards
Sergio
Yes that is a great and interesting link Loz! Thank goodness you tapped your vast creativness and repetoire of insight and knowledge to help this thread out.
LoL
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clanger
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Posted: Mon Aug 4th, 2008 10:23 pm |
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Ola Pisarodes. Que t'al?
aqui esta otro acoplamiento para usted! (don't laugh thats my bestest Spanish)
| http://www.dynamometer-info.co.uk/ |
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pisarodes
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Posted: Tue Aug 5th, 2008 09:49 am |
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Clanger, this link is ok is very interesting, I understand differences between inertia dynamometers and braked dyno systems.
It is easier for build inertia system no?
besides the extent of power, that more measures can be added ?
- motor temperature
- exhaust gas analysers
- if motor have more than one cylinder, position of the piston
Clanger wrote:
Ola Pisarodes. Que t'al?
aqui esta otro acoplamiento para usted!
Clanger, I'm not a teacher, but this a correct sentence:
Hola Pisarodes. Que tal?
Aqui tienes otro enlace para usted
I am greateful for the welcome they had given me, I feel more than a yours.
Regards
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engineer
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Posted: Wed Aug 6th, 2008 07:46 am |
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| You will find everything you need at http://www.sportdevices.com. They are a Spanish company which sells electronics for dynos and has free designs for the mechanics + instructions to calculate the inertia.
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pisarodes
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Posted: Wed Aug 6th, 2008 08:28 am |
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OK, engineer, this link is good,
It was what I needed. Thanks
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