Road Dyno. Does it Work?
Thread Starter
Joined: Feb 2004
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From: Ft.Lauderdale, FL, USA
Road Dyno. Does it Work?
Has anyone tried this out. Its not like the other ones which plug into your cigarette lighter. Here is the link, but i also copied and pasted information off of there website so you dont have to leave honda tech to read. Dont flame me. I am just asking a question. I am not saying I think it works or not, and i dont want to be a test dummy either 
http://www.franklinracingprodu....html
Road Dyno:
This low cost dyno measures the entire power band of a vehicle from 1000rpm to redline. Data is stored in internal flash memory, and you can record up to 100 test runs. Data is downloaded to a laptop or PC for processing, graphing and printing results.
Road Dyno is housed in a small battery powered case (4.3” X 2.6” X 1.2”) with pickup and is easy to use with cars, bikes, and most diesels.
Road Dyno creates detailed graphs of power & torque and a tabulated output.
Power measurements from 1HP to 1000HP!
It's also great for fault finding engine and ignition problems.
Complete with serial download cable, ignition clamp and cables, and software for Win 95, 98, 2000, XP.
Road Dyno - What does it do?
A dynamometer is basically a device that measures the amount of power being developed by an engine. A good dyno can analyze the entire power band of any engine and present the user with the results in some type of readable format. In the past, if you wanted accurate information about the performance of your automobile engine, you had to take your car to a dyno facility and have it tested. A typical set of dyno tests usually costs at least $150.
The Road Dyno Kit allows anyone to get accurate dyno results any time they wish. All you'll need is a flat section of roadway, usually less than 1/4 mile in length. How does it work? Well, basically the Road Dyno is a precision timing system that looks at a record of ignition sparks or vehicle movement over time. Based on when a single spark plug fires, the program can compute acceleration, and therefore, power. The user must supply the car's weight, gear ratios, tire sizes, and some other variables, but the rest is pure physics. This is not a power estimating program! The Road Dyno measures the power of your engine directly by making precise measurements. Many programs are available that allow the user to "estimate" power by supplying quarter mile speeds, 0-60 times, etc. Road Dyno measures power by the same method as a chassis dyno. Instead of measuring the amount of power required to accelerate a drum, you are measuring the amount of power required to accelerate the car. This is really what you are interested in anyway isn't it? Some cars may even perform differently on a chassis (stationary) dynamometer because the car is not actually moving. Accelerating the car has an effect on fuel in the bowl of the carburetor (if you happen to have one of those), oil distribution through the engine, air resistance, turbo airflow etc, etc. The Road Dyno Kit will allow you to accurately measure the amount of power your car is putting to the ground, which is an invaluable tool when doing aftermarket modifications. The Road Dyno taught us a LOT about the performance of numerous cars. It identified a 5000 rpm stumble that was traced to an overly sensitive knock sensor. After fixing the sensor, the Road Dyno shows a smooth power curve.
The Road Dyno takes hundreds of power measurements through the entire power band of the engine being tested. This provides enough resolution to be able to analyze performance parameters like spark advance, knock retard, power drops as a result of fuel pressure, etc. For example, a power curve that is jagged with small spikes indicates that the engine management computer may be "hunting" for the proper timing. The results will still be accurate, but the shape of the curve tells a lot here. Also, a sudden dip in the curve can indicate that the computer has detected engine knock and backed off the timing. It is important to correct conditions like these to ensure that your engine is performing to potential and live a long life!
Proof that Road Dyno Works!
We have tested numerous automobiles, four of which were in stock condition. On each of the four stock vehicles, the Road Dyno produced numbers VERY close (within 5 hp) to stock specifications. On the one modified vehicle, the Road Dyno returned numbers exactly where expected (within 5 hp) when compared to other vehicles with the same modifications that had been dynoed at a dyno facility. In addition, several Road Dyno users have run their cars on chassis dynos to compare. Not only do the power curves match nicely, but the maximums recorded by Road Dyno were within 5 hp of the chassis dyno! Please note that the Road Dyno measures the amount of power actually used to accelerate the vehicle. For this reason, it may be necessary to add a small percentage (3-5% average) if you wish to exactly match a stationary (chassis) dyno.
Consistency is important when making aftermarket modifications. We performed 16 separate dyno runs on the same vehicle (95 Trans Am). Approximately six of these runs were done with the car in the same condition (with the same modifications). All six runs were within 5 horsepower of each other. Although temperature, humidity, barometric pressure, fuel, and even your car's computer learning capability can affect power from one given day to the next, the Road Dyno's accuracy is believed to be plus or minus about 3 horsepower. On this vehicle, we have not only improved the consistency of power by removing the power fluctuation at 5,000 rpm, but also have added about 8 horsepower and trimmed 0-60 times from 5.55 to 5.45 just by using information provided by Road Dyno runs!
http://www.franklinracingprodu....html
Road Dyno:
This low cost dyno measures the entire power band of a vehicle from 1000rpm to redline. Data is stored in internal flash memory, and you can record up to 100 test runs. Data is downloaded to a laptop or PC for processing, graphing and printing results.
Road Dyno is housed in a small battery powered case (4.3” X 2.6” X 1.2”) with pickup and is easy to use with cars, bikes, and most diesels.
Road Dyno creates detailed graphs of power & torque and a tabulated output.
Power measurements from 1HP to 1000HP!
It's also great for fault finding engine and ignition problems.
Complete with serial download cable, ignition clamp and cables, and software for Win 95, 98, 2000, XP.
Road Dyno - What does it do?
A dynamometer is basically a device that measures the amount of power being developed by an engine. A good dyno can analyze the entire power band of any engine and present the user with the results in some type of readable format. In the past, if you wanted accurate information about the performance of your automobile engine, you had to take your car to a dyno facility and have it tested. A typical set of dyno tests usually costs at least $150.
The Road Dyno Kit allows anyone to get accurate dyno results any time they wish. All you'll need is a flat section of roadway, usually less than 1/4 mile in length. How does it work? Well, basically the Road Dyno is a precision timing system that looks at a record of ignition sparks or vehicle movement over time. Based on when a single spark plug fires, the program can compute acceleration, and therefore, power. The user must supply the car's weight, gear ratios, tire sizes, and some other variables, but the rest is pure physics. This is not a power estimating program! The Road Dyno measures the power of your engine directly by making precise measurements. Many programs are available that allow the user to "estimate" power by supplying quarter mile speeds, 0-60 times, etc. Road Dyno measures power by the same method as a chassis dyno. Instead of measuring the amount of power required to accelerate a drum, you are measuring the amount of power required to accelerate the car. This is really what you are interested in anyway isn't it? Some cars may even perform differently on a chassis (stationary) dynamometer because the car is not actually moving. Accelerating the car has an effect on fuel in the bowl of the carburetor (if you happen to have one of those), oil distribution through the engine, air resistance, turbo airflow etc, etc. The Road Dyno Kit will allow you to accurately measure the amount of power your car is putting to the ground, which is an invaluable tool when doing aftermarket modifications. The Road Dyno taught us a LOT about the performance of numerous cars. It identified a 5000 rpm stumble that was traced to an overly sensitive knock sensor. After fixing the sensor, the Road Dyno shows a smooth power curve.
The Road Dyno takes hundreds of power measurements through the entire power band of the engine being tested. This provides enough resolution to be able to analyze performance parameters like spark advance, knock retard, power drops as a result of fuel pressure, etc. For example, a power curve that is jagged with small spikes indicates that the engine management computer may be "hunting" for the proper timing. The results will still be accurate, but the shape of the curve tells a lot here. Also, a sudden dip in the curve can indicate that the computer has detected engine knock and backed off the timing. It is important to correct conditions like these to ensure that your engine is performing to potential and live a long life!
Proof that Road Dyno Works!
We have tested numerous automobiles, four of which were in stock condition. On each of the four stock vehicles, the Road Dyno produced numbers VERY close (within 5 hp) to stock specifications. On the one modified vehicle, the Road Dyno returned numbers exactly where expected (within 5 hp) when compared to other vehicles with the same modifications that had been dynoed at a dyno facility. In addition, several Road Dyno users have run their cars on chassis dynos to compare. Not only do the power curves match nicely, but the maximums recorded by Road Dyno were within 5 hp of the chassis dyno! Please note that the Road Dyno measures the amount of power actually used to accelerate the vehicle. For this reason, it may be necessary to add a small percentage (3-5% average) if you wish to exactly match a stationary (chassis) dyno.
Consistency is important when making aftermarket modifications. We performed 16 separate dyno runs on the same vehicle (95 Trans Am). Approximately six of these runs were done with the car in the same condition (with the same modifications). All six runs were within 5 horsepower of each other. Although temperature, humidity, barometric pressure, fuel, and even your car's computer learning capability can affect power from one given day to the next, the Road Dyno's accuracy is believed to be plus or minus about 3 horsepower. On this vehicle, we have not only improved the consistency of power by removing the power fluctuation at 5,000 rpm, but also have added about 8 horsepower and trimmed 0-60 times from 5.55 to 5.45 just by using information provided by Road Dyno runs!
Honda-Tech Member
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From: Woodbridge, NJ, Middlesex
Re: Road Dyno. Does it Work? (Power Rev Racing)
it helps to tune a car on the street, if using a base weight/tire, etc. and keep consistent for each run. you can see differences in ign timing changes and a/f changes. however the results are not accurate unless you nail in the weight, rire size, cd, etc.
its a useful toll if you tune alot ...
btw, the AEM EMS has a dynomath add in from FWONBAT that does practically the same thing using logged data with an EMS.
its a useful toll if you tune alot ...
btw, the AEM EMS has a dynomath add in from FWONBAT that does practically the same thing using logged data with an EMS.
B*a*n*n*e*d
Joined: Mar 2002
Posts: 7,765
Likes: 1
Re: (s13-t)
If the results are very repeatable then it should be precise.
I still need to get someone to do like 20 runs back to back on a dynojet and send me the files for some statistical analysis that way we can analyze the varience between runs to be able to say if you saw a 3whp increase or decrease is that from the motor or just noise in the measurement.
I still need to get someone to do like 20 runs back to back on a dynojet and send me the files for some statistical analysis that way we can analyze the varience between runs to be able to say if you saw a 3whp increase or decrease is that from the motor or just noise in the measurement.
Honda-Tech Member
Joined: Aug 2000
Posts: 1,171
Likes: 1
From: Georgia
Re: Road Dyno. Does it Work? (CHEETAH)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CHEETAH »</TD></TR><TR><TD CLASS="quote">btw, the AEM EMS has a dynomath add in from FWONBAT that does practically the same thing using logged data with an EMS.</TD></TR></TABLE>
i didn't know about this. thanks for the info! i found it on the aem forum...here is the dyno maths link posted by Fwombat for the aem ems. http://forum.aempower.com/bbs/...=dyno
i didn't know about this. thanks for the info! i found it on the aem forum...here is the dyno maths link posted by Fwombat for the aem ems. http://forum.aempower.com/bbs/...=dyno
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Thread Starter
Joined: Feb 2004
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From: Ft.Lauderdale, FL, USA
Re: Road Dyno. Does it Work? (b20powereDA)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b20powereDA »</TD></TR><TR><TD CLASS="quote">how much is it? </TD></TR></TABLE>
$150
$150
Honda-Tech Member
Joined: Jul 2004
Posts: 4,640
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From: VA Beach, VA, USA
Re: Road Dyno. Does it Work? (Power Rev Racing)
I've read about this before, and considered it for street tuning, but I have not heard much about it other than the website. If you do not have a dyno in your area and as long as the readings are consistent, I think it would not be a bad investment for $150. Im sure you have spent that on dumber **** before.
If you get it, let us know what you think.
If you get it, let us know what you think.
Thread Starter
Joined: Feb 2004
Posts: 2,108
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From: Ft.Lauderdale, FL, USA
Re: Road Dyno. Does it Work? (hybrid_vtec)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hybrid_vtec »</TD></TR><TR><TD CLASS="quote">I've read about this before, and considered it for street tuning, but I have not heard much about it other than the website. If you do not have a dyno in your area and as long as the readings are consistent, I think it would not be a bad investment for $150. Im sure you have spent that on dumber **** before.
If you get it, let us know what you think.</TD></TR></TABLE>
I have a few other things I have to buy first, but as soon as I get it . i will keep everyone posted on how it goes. And if its consistant
If you get it, let us know what you think.</TD></TR></TABLE>
I have a few other things I have to buy first, but as soon as I get it . i will keep everyone posted on how it goes. And if its consistant
Honda-Tech Member
Joined: Jul 2004
Posts: 4,640
Likes: 1
From: VA Beach, VA, USA
Re: Road Dyno. Does it Work? (Power Rev Racing)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Power Rev Racing »</TD></TR><TR><TD CLASS="quote">
I have a few other things I have to buy first, but as soon as I get it . i will keep everyone posted on how it goes. And if its consistant</TD></TR></TABLE>
I have a few other things I have to buy first, but as soon as I get it . i will keep everyone posted on how it goes. And if its consistant</TD></TR></TABLE>
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