Joined
·
1,041 Posts
I don't want to dyno w/ you anymore :7::shakemitkopf::wow:Crazy video. I've never seen a dyno run done where they haven't secured the front of the car. I wonder who thought of that?
Crazy video. I've never seen a dyno run done where they haven't secured the front of the car. I wonder who thought of that?
What? I've had many cars dyno'd since back in my Mustang days and I've never, ever seen them only secure one end of the car on a dyno. What happens if the dyno seizes or a rear strap lets go and the rear wheels are spinning at 120mph?secure the front? I suppose on an all-wheel drive dyno. The goal is to get maximum traction and resist forward motion.
What? I've had many cars dyno'd since back in my Mustang days and I've never, ever seen them only secure one end of the car on a dyno. What happens if the dyno seizes or a rear strap lets go and the rear wheels are spinning at 120mph?
Here's a pic of my E34 touring with an S50 swap being dyno'd. Not the best but you can clearly see the wheel chocks and criss-crossed tiedowns in the front of the car. I'd never let someone dyno my car without securing it on both ends.
ahh. i misunderstood. i always chock the front wheel when I operate the dyno.
but for what it's worth, even if the wheels are @ 120mph, that old brit Newton says it will be pretttttty difficult to make that car move forward very far unless you really stay in the throttle.
the issue in that video is the all-wheel drive setup and lack of front restraints.
pro tip: sink your dynos in to the ground, use something small like a dyno dynamics setup, or dynapaks.
inertial dynos suck.
Yours Truly,
me
p.s. i'm pretty sure you mean their 248x or other eddy-current brake dyno.
Are they really accurate? I know they tend to be precise from machine to machine. I haven't actually done any comparisons or devised a way to tell, nor would I care to verify the components and the math behind their calculations. I know the faults of other machines lie with their operator-allowed adjustability/calibration. The only use for inertial dyno is man-bits measurement and enforcement of HP rules in racing.
I love the dyno dynamics setup i have operated (only load tuning) with the exception of not being able to set data-record trigger - i have made some UGLY graphs. Tuning for a good hour w/o clearing the screen:
![]()
I haven't had the chance to mess with the LC models, i was aware of their loading capabilities. how do you start data recording? button or a configurable trigger?1/4mi times dont lie (assuming we're talking about pro drivers). The LC models from DJ can do load tuning just the same as Mustang, Dynapak, Dyno Dynamics, etc.. and you can get the real WHP (not in LC mode, obv) once you're done. The other advantage they have is the runfile viewer so you can compare graphs any/everywhere and correct for differences in smoothing/hp standards used. The only thing they're missing is the 1/4mi mode (which they're working on, according to their reps at the PRI show).
This graph seriously made me lmfaoAre they really accurate? I know they tend to be precise from machine to machine. I haven't actually done any comparisons or devised a way to tell, nor would I care to verify the components and the math behind their calculations. I know the faults of other machines lie with their operator-allowed adjustability/calibration. The only use for inertial dyno is man-bits measurement and enforcement of HP rules in racing.
I love the dyno dynamics setup i have operated (only load tuning) with the exception of not being able to set data-record trigger - i have made some UGLY graphs. Tuning for a good hour w/o clearing the screen:
![]()
This graph seriously made me lmfao