Power proven bragging, but for suspensions

**Turninconcepts.com** · 04-14-2008, 06:48 PM

We have all this power proven stuff for, well, power, but what about suspension?

I'm not shooting down the power stuff - there's a lot of guys doing AMAZING things with these motors, and coming up with ideas I would never think of. I'm just wondering if we can do the same for suspensions in some way.

I'm all for a set of easily defined and understood metrics (like HP and torque are to power), and a way to consistently measure them.

I'm thinking along the lines of peak G's and sustained G's, but I'm also thinking along the lines of a full circle diagram showing lateral and long. G's.

Any input along these lines of thinking would be greatly appreciated.

**Siegel Racing** · 04-14-2008, 06:59 PM

How about track records

Siegel

**Turninconcepts.com** · 04-14-2008, 07:35 PM

Quote:

Originally Posted by Siegel Racing

How about track records

Siegel

Problem there is not everyone has the time, budget or track within range. I'm thinking along the lines of peak G's, at X speed, over Y time or something like that.

***chaos311clarity*** · 04-15-2008, 03:03 AM

what would be the standard method of measurement?

**twiSTies** · 04-15-2008, 03:27 AM

I think we should use our rally wing for this purpose of testing. simply record how many wendy's double bacon cheeseburgers can stick to the wing during a turn before sliding off. mmm wendy's.

sti robot · 04-15-2008, 03:36 AM

- G-meter plots
- A standardized slalom of cones with X spacing and x distance from the first cone as a standing start.
- Highest held G-s (instantaneous mean nothing)
- most busted kidneys

**Siegel Racing** · 04-15-2008, 06:39 AM

Everybody should get one of these:

Amazon.com: Escort Passport GT1 G-Timer Vehicle Performance Computer with Basic Feature Set: Electronics

Then you could have real figures (and they're only $35, I have one and it works surprisingly well)

Siegel

stretch · 04-15-2008, 06:56 AM

Quote:

Originally Posted by Siegel Racing

Everybody should get one of these:

Amazon.com: Escort Passport GT1 G-Timer Vehicle Performance Computer with Basic Feature Set: Electronics

Then you could have real figures (and they're only $35, I have one and it works surprisingly well)

Siegel

Done. I love a bargain, thanks for the link! (And if we're all using the same product, hopefully results will be comparable.)

I don't see it doing average G's or logging anything more than 0-60 runs, so the best we'll be able to compare is peak lateral G's. That right? And the premium version will show you the "traction circle", which is the sum of G forces in all directions, which is very meaningful... but it won't data log that number. The 10 runs it records are only straight-line logs.

For those curious, here's the manuals for the $35 and $70 versions, respectfully:
http://www.escortradar.com/pdf/gt1manual.pdf
http://www.escortradar.com/pdf/gt2manual.pdf

Edit #2: Cancelled Amazon GT1 order and bought the GT2 model on eBay for $51+$8 shipping!
Escort Passport GT2 G TIMER/METER FAST SHIPPING! - eBay (item 260229070366 end time Apr-20-08 09:36:50 PDT)

Edit #3: Just to throw some numbers out there, back when I was racing my Mazda6, I had the original G-Tech. It told me I was peaking around ~1.16G's lateral G's, and I'd say holding 1.1 (but again, it wouldn't calculate an average). This was on the original Falken Azenis RT-215.

antonch · 04-15-2008, 12:16 PM

I have a G-tech unit that I've been meaning to hook up!

Seigitor · 04-15-2008, 12:37 PM

Call me crazy, or naive, but isn't there a circle+speed test that does this? We would need some nice flat space to drive around on like a track or a parking lot. I'm talking about what they do in the option DVD episodes. I think they set the circle, and then drive around it at the fastest speed that doesn't loose grip. Then, average sustained G's are calculated from the time.

**Turninconcepts.com** · 04-15-2008, 01:38 PM

there's always the max-q, but that's pricey.

Robot - any thoughts on your little G-meter dealie from your dash kit?

The circle is good, but doesn't measure transitional response (ie side to side). If all I wanted was SICK numbers in one direction at a constant speed I'd unhook the bars and go to town letting the suspension load slowly.

***Neanderthal Racing*** · 04-15-2008, 01:58 PM

i'm digging this whole concept. what a coincidence...i have completely new suspension to wring out.

jph · 04-15-2008, 02:03 PM

Quote:

Originally Posted by antonch

I have a G-tech unit that I've been meaning to hook up!

i have a GtechPro RR hooked up.
and can't seem to get anywhere near the lateral G's that i was able to do in my modded mx-5

TiC, i need coilovers

and atomic fireballs

J.

ESmooth · 04-15-2008, 02:59 PM

So by throwing on my hoosiers and laying out some VHT will I automatically win?

sti robot · 04-15-2008, 04:19 PM

Quote:

Originally Posted by Turninconcepts.com

there's always the max-q, but that's pricey.

Robot - any thoughts on your little G-meter dealie from your dash kit?

I have usb key and to laptop datalogging working right now. In a few minutes I'm going to see the max sample rate I can force out of my setup.

BTW the Maxq is actually a relatively good deal for the hardware you get. The GPS receiver is where most of the money goes.

04-14-2008, 06:48 PM	#1
Turninconcepts.com Authorized Vendor Posts: 4,404 Join Date: Jul 2003 Trader Rating: (48)	Power proven bragging, but for suspensions We have all this power proven stuff for, well, power, but what about suspension? I'm not shooting down the power stuff - there's a lot of guys doing AMAZING things with these motors, and coming up with ideas I would never think of. I'm just wondering if we can do the same for suspensions in some way. I'm all for a set of easily defined and understood metrics (like HP and torque are to power), and a way to consistently measure them. I'm thinking along the lines of peak G's and sustained G's, but I'm also thinking along the lines of a full circle diagram showing lateral and long. G's. Any input along these lines of thinking would be greatly appreciated. This ad is not endorsed by this member. Please register or login to hide this ad.

04-15-2008, 03:03 AM	#4
*chaos311clarity* oMgWTFpewpew Car: 05 CGM STi Fav Mod: grip. Location: Southeastern PA Posts: 5,351 Join Date: Aug 2006 Trader Rating: (7)	Re: Power proven bragging, but for suspensions what would be the standard method of measurement?

04-15-2008, 03:27 AM	#5
twiSTies Gold Member Car: 05 Subaru WRX STi Fav Mod: Coilovers and X-Brace Location: Allentown, PA Posts: 2,868 Join Date: Oct 2005 Trader Rating: (5)	Re: Power proven bragging, but for suspensions I think we should use our rally wing for this purpose of testing. simply record how many wendy's double bacon cheeseburgers can stick to the wing during a turn before sliding off. mmm wendy's.

04-15-2008, 03:36 AM	#6
sti robot Spec C Club Car: 04 STI Java black w/ Fav Mod: a garage Location: Just outside Manassass VA Posts: 1,361 Join Date: Sep 2005 Trader Rating: (0)	Re: Power proven bragging, but for suspensions - G-meter plots - A standardized slalom of cones with X spacing and x distance from the first cone as a standing start. - Highest held G-s (instantaneous mean nothing) - most busted kidneys

04-15-2008, 06:39 AM	#7
Siegel Racing Authorized Vendor Car: Your STi ;) Fav Mod: Everything Location: Atlanta Posts: 1,208 Join Date: Mar 2005 Trader Rating: (2)	Re: Power proven bragging, but for suspensions Everybody should get one of these: Amazon.com: Escort Passport GT1 G-Timer Vehicle Performance Computer with Basic Feature Set: Electronics Then you could have real figures (and they're only $35, I have one and it works surprisingly well) Siegel

04-14-2008, 06:59 PM	#2
Siegel Racing Authorized Vendor Car: Your STi ;) Fav Mod: Everything Location: Atlanta Posts: 1,208 Join Date: Mar 2005 Trader Rating: (2)	Re: Power proven bragging, but for suspensions How about track records Siegel

04-15-2008, 12:16 PM	#9
antonch Junior STI Driver Car: Black 06 STI Fav Mod: Seatbelt fix, site avatar delete Location: SF Posts: 80 Join Date: Feb 2008 Trader Rating: (0)	Re: Power proven bragging, but for suspensions I have a G-tech unit that I've been meaning to hook up!

04-15-2008, 12:37 PM	#10
Seigitor Amateur STI Driver Car: Black 06 STi Fav Mod: Whiteline Control Springs Location: Cinci, Ohio Posts: 17 Join Date: Sep 2007 Trader Rating: (0)	Re: Power proven bragging, but for suspensions Call me crazy, or naive, but isn't there a circle+speed test that does this? We would need some nice flat space to drive around on like a track or a parking lot. I'm talking about what they do in the option DVD episodes. I think they set the circle, and then drive around it at the fastest speed that doesn't loose grip. Then, average sustained G's are calculated from the time.

04-15-2008, 01:38 PM	#11
Turninconcepts.com Authorized Vendor Posts: 4,404 Join Date: Jul 2003 Trader Rating: (48)	Re: Power proven bragging, but for suspensions there's always the max-q, but that's pricey. Robot - any thoughts on your little G-meter dealie from your dash kit? The circle is good, but doesn't measure transitional response (ie side to side). If all I wanted was SICK numbers in one direction at a constant speed I'd unhook the bars and go to town letting the suspension load slowly.

04-15-2008, 01:58 PM	#12
*Neanderthal Racing* GT R US Car: CUTN EDG project Fav Mod: $20. mudflaps from auto zone Location: my cave Posts: 5,795 Join Date: Dec 2003 Trader Rating: (1)	Re: Power proven bragging, but for suspensions i'm digging this whole concept. what a coincidence...i have completely new suspension to wring out.

04-15-2008, 02:59 PM	#14
ESmooth STI Driver Car: 06 Stage 2 STI Location: Redondo Beach, CA Posts: 261 Join Date: Dec 2006 Trader Rating: (0)	Re: Power proven bragging, but for suspensions So by throwing on my hoosiers and laying out some VHT will I automatically win?