Event Coverage: MR 1st annual dyno day / meet: August 27

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951 Gear head said:
:dunno: :dunno: :dunno: :dunno: :dunno: :dunno: :dunno: :dunno:
What.......
LOL
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Props for a very interesting ride, love'd the fact your car is not a trailer queen and to see it drive away after the event !

BTW, does your car have any history , would it happen be one of the ex-Rothmans Challenge cars ??
 
silver7 said:
Props for a very interesting ride, love'd the fact your car is not a trailer queen and to see it drive away after the event !

BTW, does your car have any history , would it happen be one of the ex-Rothmans Challenge cars ??
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Thanks for the compliments.
No its not a challence car, its faster, LOL

I usually trailor it mostly because it has no head lights, and an open exhaust the latter of which usually makes the Police turn their heads even if im not pushing it. Just trying to avoid trouble.
Once in a while on short distances i will drive it on the road, but its not something I do regularly. With the stiff suspension, wacko alignment and zero insulation its just not fun to drive in the city, it jumps over bumps darts L/R on the highway and get hotter than hell after 15 or 20 minutes of driving.
 
Daso said:
The drivetrain loss are near impossible to actually calculate. They are all estimates. The way the fabricators test their engines is to dyno them out of the car. They have them setup on a bench and the dyno is attatched to the outputshaft which would normally go to the tranny. Thus getting numbers "at the flywheel".
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thats right
 
FreAkErZ said:
the drivetrain loss is computed from torque as measured by the dyno at the wheels during deceleration in gear with the clutch in, and this curve is subtracted from the computed flywheel horsepower curve to produce the horsepower curve at the wheels.
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wrong, the drive train loss is mesured by the friction in neutral...*td*
 
BTW, i showed up at my time at 530 and no one... a real waste of time, something should have been posted telling ppl with appointments later in the day that it got cancelled *frustrate
 
Ya I thought the same thing. I guess it's UP TO a 30% loss :dunno:

67Continental said:
isn't the 05 mustang rated for 300 at the flywheel? Why would it tell you you have 283? None of the numbers you listed above equal a 30 percent loss. 30 percent of 300 is 90. 30 percent of 283 is 84.9......
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For those who want to know what our dyno is all about...

www.maha.de
www.tat-messysteme.com

The use of a dyno is for tuning...numbers given are more realistics than others. Calibration has been made with cars that have known numbers from Porsche, VW, Acura. The claimed power diffence with those companies is less than 0.5%. For example Boxter S stock engine is rated at 258 flywheel HP, the dyno gave us a 257.5 hp rating.Sometimes companies overrate the power...but we are confident that the flywheel power is more than acurate. I even compared the engine dyno numbers with our chassis dyno and we are still precise as precise.

For any questions e-mail
 
Gregster said:
I still think Spoonfed should have jacked up his car :p
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lol, yeah that would have been fun!

Why does this pic make me think of the old Neon ads

mr110.jpg
 
VRSATION said:
BTW, i showed up at my time at 530 and no one... a real waste of time, something should have been posted telling ppl with appointments later in the day that it got cancelled *frustrate
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Sorry for your wasted time dude. I feel really bad.
 
FreAkErZ said:
I just took that off a website where they used the dyno.. http://www.team3s.com/~matthews/dyno.html
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You are right with the LPS 3000 and the MAHA software. We are using a TAT software which is more acurate. You see the black line at the bottom is the loss during acceleration. The inverse during deceleration in neutral is far more precise cause it gives you negative hp which equals the drive train loss directly.
 
Ok, so you guys just use a different software than that website.. but with a standard MAHA dyno, that's how it would work.. ?
 
kineso said:
You are right with the LPS 3000 and the MAHA software. We are using a TAT software which is more acurate. You see the black line at the bottom is the loss during acceleration. The inverse during deceleration in neutral is far more precise cause it gives you negative hp which equals the drive train loss directly.
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so 30% drivetrain loss on a FWD is accurate? awesome.
 
FreAkErZ said:
Ok, so you guys just use a different software than that website.. but with a standard MAHA dyno, that's how it would work.. ?
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Calculation is different than a Maha software. Hardware is standard weather its a Bosch or Maha dyno.
 
The amount of drivetrain % loss will always chage...on the same car after mods!!.....lol

a drivetrain EATS power....not a specific %!....but a specific amount!!!! the more power you will make the less % it will eat...think about it...
for example a 2.0 8V eats at least 30% on a stock car/engine (115)....but the same engine once prep @200hp gets a drivetrain loss of less than 18% on our dyno.... which means that once stock (with the faggity wheels etc...) it needed almost 39 hp to get going....and once prep for rece it needed 37hp(the same in MY book)


theres no such thing as a ''virtual'' stable % loss....it changes....but the amount of HP loss (in real hp number stays quite the same!!) understood?
 
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