Desk top dyno
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Desk top dyno

  1. #1
    Senior Member H20MOFO's Avatar
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    Default Desk top dyno

    Is there such a thing as a free (online) DD? If not what's best value in some software?
    Another Hot Boat refugee

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    Resident Ford Nut Sleeper CP's Avatar
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    I was wondering if someone has one who I can give some info to and see what it spits out ????

    Sleeper CP

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    I'm No Expert Shaun's Avatar
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    The desktop dyno software is not free.

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    I'm No Expert Shaun's Avatar
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    Quote Originally Posted by Sleeper CP View Post
    I was wondering if someone has one who I can give some info to and see what it spits out ????

    Sleeper CP
    I have it.

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    Cantard 71hallett's Avatar
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    Quote Originally Posted by H20MOFO View Post
    Is there such a thing as a free (online) DD? If not what's best value in some software?
    How much do you want to make?
    Quote Originally Posted by gn7 View Post
    It would be a balmy 85* in Steel's shop if he would move a little faster

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    Senior Member H20MOFO's Avatar
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    Paul, so what you're sayin is that you have a flow bench(at you house)....but nothin to say about dd software? As far as hp.... the answer is more than I can afford.
    Another Hot Boat refugee

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    Cantard 71hallett's Avatar
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    Quote Originally Posted by H20MOFO View Post
    Paul, so what you're sayin is that you have a flow bench(at you house)....but nothin to say about dd software? As far as hp.... the answer is more than I can afford.
    The biggest problem with desk top dyno is guys lying to themselves when there putting in the numbers.

    That said I have seen real vs desk dyno sessions and know that even with real numbers they can be off even into the 75-80 hp/tq range.

    I am not trying to get shot at but....... I will be the first guy to say hp and tq are just numbers and it takes the whole package to run numbers not just a dyno sheet. Everyone these days has a 1000hp these days anyways........

    Yes they are a good tool for someone to learn about combinations, what works what doesnt exc........gospel truth....no chance.
    Quote Originally Posted by gn7 View Post
    It would be a balmy 85* in Steel's shop if he would move a little faster

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    Senior Member H20MOFO's Avatar
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    I realize there are real world #'s and dd #'s. For example.. if I add a turbo. how outta wack is my cam chit gonna be?? Plus how can I know where I'm making power now(It's an jet thing) so I can pick a new impeller(stainless). Plus, I'm bored at work so.....
    Another Hot Boat refugee

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    I'm No Expert Shaun's Avatar
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    I had all the numbers for my build, i put them in DD. We'll see how they compare when i get my engine dyno'd. I was told DD is a good tool for getting a idea of what certain combinations will do to the curve.

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    Cantard 71hallett's Avatar
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    Quote Originally Posted by Shaun View Post
    I had all the numbers for my build, i put them in DD. We'll see how they compare when i get my engine dyno'd. I was told DD is a good tool for getting a idea of what certain combinations will do to the curve.
    Be cool to see your results. I dont hate them just dont use them anymore.
    Quote Originally Posted by gn7 View Post
    It would be a balmy 85* in Steel's shop if he would move a little faster

  13. #11
    Senior Member Chris The Plumber's Avatar
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    Default DD

    Desk Top dyno is cheap, we found one on line a few months ago for $25.00, although I haven't really played with it yet, my personal opinion is it is a "ballpark" estimate.
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    If you do a blower motor on it, your numbers will be off, unless you know how to adjust all the parameters in the program to take advantage of the blower.

    On N/A motors, we have found that the curve is very close to the actual, IF you use the correct numbers. Its not a tool to use for HP/Tq bragging rights, just to show the effect on changes you make. DD shows a very similar curve to real dyno pulls, unless the real dyno had some crazy correction factors put into it.

  15. #13
    Senior Member earlbrown's Avatar
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    This one looks petty inexpensive.

    http://www.enginedesigner.com/enginedesigner.aspx

    comp cams also offers a free program to help you "pick out a comp cam"

  16. #14
    E-7 Sheepdog (ret) SmokinLowriderSS's Avatar
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    Drop me a PM, I have the installer attatched to an e-mail draft just sitting, due to mailing it to people over the years.

    Sleeper, I'll run whatever you'd like, we'll see what it spits out.

    Yes they are a good tool for someone to learn about combinations, what works what doesnt exc.
    That has always been my stance on it, gives about as good of data out as you put in, good or bad.
    It's always been pretty close on my own motor build, as compared to known performance against my jet drive.
    Sure is the best way IMO to get an idea of what direction to go in changing things BEFORE BUYING PARTS.
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