I am presently in the Cleveland Ohio area attending the Mr Gasket/Accel GEN7 DFI training class. While I was in the area I spend an extra day at the Mustang manufacturing facility getting some training on my new Mustang 600HP chassis dyno that is due to be shipped at the end of next week.

All in all it was an interesting day visiting with the engineers at Mustang. I got the tourist tour of their facility and on hands training beating up a Dodge Viper on a similar dyno. I am quite impressed with the operation of their dynos and how fast their controls interact. I can now see and understand the main differences between a dyno with Mustangs designed eddy current loading capabilities and the more common inertia only DynoJet dynos. And all of the different tests I can perform for a customer that a DynoJet can't do. Plus the one notorious myth of how a Mustang dyno giving out low Hp/Torq numbers was fully explained to me.

Here are a couple of pictures of my new dyno.


This picture shows up close one of the large capacity EDDY CURRENT power absorbers


End view of PAU


Front view showing both roller sets and both PAUs

I was rather surprised at the sheer size and mass of this dyno. This thing weighs about 9000LBS :eek: Moving it around is going to be a royal PITA before I can get it planted into the ground. Anyone want to give me a hand :) I will supply the beer and hot dogs :)


[Modified by tjwong, 3:21 AM 4/23/2004]

 

:thumbs:

 

way cool!!!

And WAY Expensive!!!!!!!! :eek: :eek: :eek:


:thumbs:

 

Hey tj, you are in my backyard! If you're going to be here on Friday or Saturday, shoot me an email and I'll meet you for a pop to do some bench racin'! :cheers:

 

Bogus, it was way expensive! It cost me more than my car did! :( Hopefully I will be able to recoup the cost when I put it to work:)

H Rocks, I am staying at the Middleburg Heights Comfort Inn for both Friday and Saturday. Give me a call @ 440 234 3131 I am in room 143. The Mr Gasket classes run from 8am thru 5pm on both days. I can't imagine it going that long on Saturday. Give me a call maybe we can meet :)


[Modified by tjwong, 5:01 AM 4/23/2004]

 

I don't drink but if you need a hand let me know. Can't wait to break that thing in.

 

Hey Tom,

Good to hear about the dyno! I'm working in Portland quite a bit, if you need help with it, I'm available after 5PM on weekdays.

I'm anxious to be one of your first customers!

Ron :hurray:

 

Can you share with us why the mustang dyno gives the numbers it does vs. the numbers the dynojet gives?
Congrats on your business venture!
Awesome!

 

Hey Tom, sounds like good news. If I can help on a weekend, just let me know, I'll throw my back out with ya!

 

Awsome setup.

Wish you were closer

:cheers: :cheers:

 

Tom, are you sure you don't want to install that dyno in Missouri. :D

 

Ditto, Tom! I know a couple of Vette owners that could keep your new dyno busy!! Looks like a great piece of gear - can't wait to hear the reports on installation, set-up and first run. Keep us informed.

:cheers:

 

:withstupid: :hurray:

 

tjwong...

Hey shoot me an email on the details of this thing if you do not mind. We have been throwing around the idea of getting one of these for our area. Lotsa guys with cars and no place to take them, especially ones that are knowledgable enough to do anything with the cars.

we took my car to a place in state college and the guys could barely run a simple windows based program :rolleyes: I had to get on the machine and figure out how to put the AFR on the same graph as the torque and HP curves :banghead:

We have been thinking about getting one at the dealership and would like to know the specifics of what you know.

Thanks :cheers:

ski_dwn_it@yahoo.com :cheers:

 

Hurry back home, Your missing some good weather..

 

I am in too if you guys hook up. Give me a call.

Ron

 

I need one of those in my garage :cool:

 

Paul here is the low down as explained to me by Mustang as to why their dyno gives more accurate and lower Hp numbers than a dyno jet.

First of all, HP and Torque are calculated by the chassis dyno by it knowing the time it takes for your car to accelerate a known mass (inertial load) to a given speed or engine RPM.

A DynoJet is mainly just a plain and simple inertia based dyno. It will of course give you repeatable numbers for a given test on the same car. THe difference is that with a Mustang dyno, it calculates in your cars actual weight, and actual 50 MPH horsepower requirement. What that means is the Hp required to maintain 50 MPH on a level grade not including drag.

So when doing the actual test, the Mustang dyno calculates the added vehicle weight into the dyno, this added inertia is added by applying power to the POWER ABSORBER (PAU) to simulate actual road load. In that load calculation the 50 MPH horsepower requirement is also added via the PAU.

A DynoJet can't do that because they do not have a means to add additional weight to their machine.

In the end you get higher numbers with the DynoJet because you can accelerate a fixed mass of about 2000LBs much faster than you can accelerate a mass of what your car really is. A dyno has to use acceleration to calculate power and torque, and both dynos designs uses this basic theory. Only the Mustang is more accurate because it includes the real weight of your car into the inertial load.

 

Sounds to me like you are saying that if my motor was in a 2200 lb car that it would produce more torque than in my 3000 lb car and therefore more horsepower.

 

Let me play devils advocate. Lets say that one time I get on the dyno with a SBC, and the next time with a BBC under the hood. The weight change at the rear wheels will be minimal, but I will have changed the entire weight of the car several hundred pounds possibly.....

HP and TQ number from any dyno I still say are just for reference. If you get on one and it tell you that you have 300hp and you leave and it tells you that you have 330, don't be suprised if you strap down on another one 2 days later at a different location and it tells you that you have 285.

:cheers: