sorry i was having trouble resizing......... oh well its up...............


also note....

the previous 3 runs (didid 4 rus total) all power was best below 4k , so thats why the dyno'er let off the gas at 4k oon the last run

http://www.vplanet.ca:7080/users/kuntzie@vplanet.ca/Pictures/CCE00000.jpg

link for those wanting to see the whole thing
;)

Keeps mouth shut about inertia dynos... :leaving:

Now get the power to the ground without snapping axles! ;)

Keeps mouth shut about inertia dynos


please fill me in

how accurate?

educate us Kenny!!

http://www.dragsource.com/index.php?navselect=dynamometer&dyno=infoinertia

well dounds acurate to me...... (HP)

nice #'s

Nice numbers. How are you able to run 18psi and what are you doing about fueling?

that dyno chart looks very very strange.  the HP & TQ lines are basically identical.

Do you have a chart that goes all that way out to like 6k or so???  That chart does look kinda weird and its also weird that peak power is 3900rpm....

Also, if I had known you were gonna run 18psi I would've guessed a lot higher!!!  I guess my 272 figuring you were running somewhere in the 8-12psi range. 

Very healthy numbers and definately about what I would expect with that setup. 

Can't wait to put that turbo and that tranny on my STE. 

I have a copy of Hot Rod Magazine for the March 2006 issue. It contains the article with Mark Dobeck who is the creator of the Dyno-Jet dynamometer for motorcycles and then on to cars. This is where all of the fudge factors for inertia style dynos (all manufacturers of inertia just followed Mark's design and software calculations) started back in the mid 1980's.

A couple of links with discussions about the inertia type dyno's.

http://www.germanmotorcars.com/Dyno_load%20vs%20inertia_1.htm

http://forums.evolutionm.net/showpost.php?p=2753748&postcount=10

http://www.redline.lt/magazine/spec-features/article/article/16/1/

Guys..Pure inertia dynos are becoming a thing of the past. That is why I spent an extra $25,000 on the dyno I got. Eddy current (electromagnetic "retarder") will give a more precise graph along with a closest to actual HP/Torque to the wheels than ANY inertia dyno.

I can go on and on about why inertia dynos are nothing more than a bragging number machine. It is a tool. You get a baseline...you ad parts...run again on the EXACT same dyno and you will hopefully see a gain. If you go to another/different Dyno-Jet or Superflow or Land and Sea machine you will not have the ability to know if there was a difference good or bad because the software on each conflicts and spits out fudged numbers.

Example...I went to one dyno in Denver (Josh was there) and put down a number. Went to another inertia dyno (I think same manufacturer Dyno-Jet) with ZERO changes with hotter ambient temps and put down 30 more HP and I think 80ft/lbs more torque. It should have gone down not UP!

Now I ran my car on my dyno. I put down 192.4HP and 270.? ft/lbs of torque with ZERO correction factors. The car was in the shop all morning where it was nice and cool. We went to the other Dyno Dynamics machine in town and ran my car on it. With only about 20 minutes of cool down on a 70*F day it put down 190.1HP and 268.? ft/lbs with ZERO correction factors. You can put those graphs on top of each other and they mirror each other minus 2HP and 2ft/lbs of torque. NO other manufacturer out there can duplicate that!

Another example...the other Dyno Dynamics dyno in town tuned a Turbo Supra. It put 525 HP to the wheels when they were finished. The guy drove his car on the same day up to the DynoJet inertia dyno (I don't think you have been to Dyno Pro's Josh) and it put down 650 HP! :icon_eek: So you mean to tell me that car gained 125HP by dropping 300 ft in elevation?? Obviously not...what happened is Adam with the Dyno Dynamics machine puts in a correction factor of 1.15 which equals 15% for altitude loss. This number has been proven NUMEROUS times. Bridge the gap....multiply 1.25 correction or 25% to the 525 HP number...what do you get? What is 15 + 25? 40 right? 99% of all Inertia style dynos add 40% as a flat number to correct for altitude, inertia, parasitic loss, etc.

Do you know what the weather station was reading that day? I can give you a PRECISE correction number if I have the Barometric Pressure, Air Temp, and Humidity % for that day.

Even if he had ZERO correction factors in it is still padding the number by 20% for drivetrain loss. Inertia style dynos are trying to give you a CRANK HP figure...not what you have at the wheels. Eddy current does not do that. It reads off of tractive effort for a precise HP/Torque reading.

Here is a demo vidoe of just how sensative a Dyno Dynamics machine is!

http://www.bmepfuelandtuning.com/downloads/injector_k_hi.wmv

I researched all dynos before I bought mine. I asked if the other dynos could duplicate anything like this...either a dropped injector or a lost spark for one shot. All of them himmed and hahhed around the question and I did not get a straight answer! Dyno Dynamics said...god yes we can see it. A 48" Inertia roller has 2 pickups for speed on it and a 24" has 1. My dyno with 12" rollers has 96 points for speed pickup! I see the slightest hick-up anywhere in the power or in steady state.

Quote from: TGPilot on September 21, 2006, 07:56:54 PM(I don't think you have been to Dyno Pro's Josh)

yup, i dyno'd my Cutlass at DynoPros.  it was the fall 2005 RMCGP dyno event.  that's where i got the 227whp/325wtq.  i don't think you were there for that one.  i think you dyno'd your 5-speed TGP at DynoPros later and got numbers very similar to mine IIRC.

i remember you were at the dyno at PFI Speed in Ft. Collins (with your TSTE), which was the spring 2005 RMCGP dyno event.  i brought my Lebaron GTS to that one so i can't really compare the numbers myself.

Well Kenny good info. I sure didn't know that shit.

Jud

PS: Hope business is going well.

Good Info Kenny me learns lots with thems links