Comparision Between Dyno Dynamics and Mainlines Dynos

[Eaturbo]

Had a very interesting chat with a Mate who has just done his training on a new 1000hp Mainline dyno to learn to use it. Now what was interesting is that they ran his VY2 Clubsport R8 auto and it made 228rwkw and on the Dyno Dynamics it made 238rwkw, now his mates Monaro with a cam and exhaust and Extractors made 290rwkw on DD(dyno Dynamics) and only 272rwkw on the Mainline Dyno. Also a stock BF F6 tornado Auto was there it made 210rwkw. Now after a long day of training and talk about why the differences this was what come up. When you look at the F6 at 210rwkw it is approx 270 at the engine which is right. Now the Monaro was never going to make 290rwkw with no headwork so 272rwkw sounds more correct. The guy from Mainline Dynos reckons that all Dyno Dynamic Dynos read high as this is just how they are calibrated, its not operator error just different calibrations. The other interesting thing was that my mates Clubby had 500rwNm or 600 odd at the engine which it doesn't. Apparently DD measure Roller torque and not torque at the Wheels. Now I'm not 100% sure what this means but his clubby had 405rwNm or about 520Nm at engine which for a 5.7L Gen3 is about right with Edit and Extractor and Exhaust. Now apparently Torque is measured at the roller centre shaft where the roller shaft meets the measuring device and not corrected Torque at the Tyre like Mainline.
The other thing is with Mainline you can hook up heaps of stuff like a Injector duty cycle sensor to the injectors and graph injector cycle to power output. With Holden and Ford you can plug into diagnostic port and read all engine sensor outputs while it is run on dyno and you can graph everything, boost, Oil pressure, speed, rpm, temp, air intake temp, timing ,AFR's, you name it. So maybe all these really high standard cars we see are just inflated figures that are incorrect. Also apparently the Mainline Software is 2 or 3 times more advanced than DD and they send you free updates for they dyno whenever they find something new as apposed to DD where you have to pay for updates/upgrades. Some Food for thought guys. It still means that any dyno is good for before and after and tuning but maybe the number is not a true representation of what you really have.

[Mechan1k]

Have heard the same thing as well ... and that's why you get some many people whinging when they get "low readings" on the Mainline dyno ... it's just that when they get their higher figures on DD they don't realise it has been artificial "ballooned" out.

Mainline dyno also show averages as well (not just peak) either ... I have had a look at my mechanic's Mainline when he has been testing/tuning a few vehicles ... and the amount of functions and features available is astounding that I didn't realise they had.

I dyno is a good tuning tool though if you use the same one all of the time to show actual comparison figures after every mod.

[ratter]

The mainline/dyno dynamics argument is like the ford/holden argument, you will valid opinions from both sides.


That being said I opted for a mainline because of their software options and their consistancy, but I'm sure D/D owners will say the same thing

[Falchoon]

Originally Posted by Eaturbo

The guy from Mainline Dynos reckons that all Dyno Dynamic Dynos read high as this is just how they are calibrated, its not operator error just different calibrations.

Of course he says stuff like this - he sells the opposing brand! He's hardly going to give it glowing reports and say it's better than his product!

Originally Posted by Eaturbo

It still means that any dyno is good for before and after and tuning but maybe the number is not a true representation of what you really have.

Everybody knows (or should know) that different dynos (even of the same make and model) and different days give different readings. There are dozens of reasons why this is so. It can be because of the calibration of the dyno, the weather or the way the car is tied down on the dyno; just a few reasons.

I am not saying DD is better or worse than any other brand of dyno, just saying you can't compare readings.

[Craig]

Yes valid arguments all round but for me the real test of how much power your car has in the 1/4 mile drag strip MPH readings, and that's in two stages up to half track and the second half of the track.

Dyno's are a tuning tool......

[BAturb]

I have said it before and will say it again, dyno figures are just numbers, the dyno is only a tuning tool, there is so much variation between dynos and operators that you cant compare them

[Ghiadude]

i have only worked on a mainline and several cars that have come from engine dyno's have come to get in car tweaks done. needless to say that it was very acurate. It does have a plethora of inputs that you are able to log as has been said before. I havent used a DD so i cant and wont comment.

[EA2BA]

I try to run my car on the same dyno everytime to try keep some things consistent, that way I know roughly if the mods I have done, have gained anything at all, as said its a tuning tool, but you have to try compare apples with apples.

[Eaturbo]

As this gentleman from Mainline said, there is nothing wrong with the Dyno Dynamics Dynos but he knows that the numbers that Mainline Dynos come up with are more Real world Numbers, By this he means if you have 230rwkw than this is exactly what you have . He also said that people who tell you you have X amount of power at the Flywheel and have worked this out from using there RWkw and adding a % for driveline loss are not really getting the true power. All cars have diferent losses and the more power you make the less the losses are threw the driveline. Example If you have 300rwkw you might have around 400kw at the flywheel but if you have 900rwkw you dont have 1200kw at the flywheel.

[T_Terror]

lol i remember when people were complaining about dyno dynamics dynos reading too low in shootout mode

[SpoolMan]

I agree with Craig dyno is a tuning tool.

10 or 20 kilowatts difference between 2 different dyno brands is no big deal.
I have seen bigger differences between 2 Dyno Dynamics dyno, main thing is if your getting work done its before and after figure that may matter to the customer.
Good A/FR's and Torque thats what we want to see.

Originally Posted by ratter

That being said I opted for a mainline because of their software options and their consistancy, but I'm sure D/D owners will say the same thing

Hi Mick, most of us dont know the cost of a Dyno, I think the Dyno Dynamics twin retarter is around $90,000 with the digital setup.
Whats the price difference between the mainline and Dyno Dynamics?

[ratter]

Originally Posted by SpoolMan

Hi Mick, most of us dont know the cost of a Dyno, I think the Dyno Dynamics twin retarter is around $90,000 with the digital setup.
Whats the price difference between the mainline and Dyno Dynamics?

Price wise they are fairly similar, depending on what options you want.
Some of mainlines options are cheaper than the D/D equivalent options and vice versa. Mainline pride themselves on being consistant with their readings and beleive they are fairly reasonable with their figures from dyno to dyno, but I'm sure D/D also think they are.
I optioned mine up with a twin retard bed so in fututre I can add another 507rwkw retarder if needed, wide track rollers so I can run tubbed cars, injector duty cycle software, OBD2 software (no temp reading fudging), challenge software, thermal sensors, Automatic hardwired weather station, 20,000 cfm fan, etc etc price wise it was very similar to the D/D but I felt more comfortable dealing with mainline, I guess they sold themselves better

[Wally]

If it isn't from an engine dyno, I never believe figures bandied about.... great for tuning, back slapping and nothing else

[Sledgehammer]

Originally Posted by Craig@ACE

Yes valid arguments all round but for me the real test of how much power your car has in the 1/4 mile drag strip MPH readings, and that's in two stages up to half track and the second half of the track.

Dyno's are a tuning tool......

So true Craig.
Cheers.

[ratter]

Mainline Dyno's use the dynologic software which is identical to what they use on engine dynos, obviously the retard mechanism is different between the two.

Their software is accurate enough to be used by several leading V8 supercar teams and Robert Bosch Industries use one of their chassis dyno's for diagnostic and testing because they consider it consistant enough to give accurate before and after figures.


The main thing for the customer getting their car dynoed is to use the same dyno and operator for all before and after testing so that you can actually see what you have gained/lost, no matter which brand of dyno is used.

[ratter]

: I meant they use dynolog software not dynologic