LG Motorsports

Hi Guys

here is a short 1 minute video just to give you a flavor of what the test involved.

http://www.youtube.com/watch?v=hXfch_2NeE8

The test was conducted to answer questions related to a recent shock mount failure with another brand coil over shock.

It has always been our feeling that the upper shock mounts on the Corvette C5 and C6, and now the C6 Z06 were more than strong enough. We felt that GM actually engineered them to withstand the loads of Coil over shocks.

We felt that the same damage would NOT and could NOT happen with our own LG Coil over design since it is entirely different and comes from a true racing pedigree. So the only way to prove it was to do a test hitting the same size 6x6 block of wood at about 30mph +/- just like the car that sustained the Damage hit.


Only we ran over it 6 times!

The reasons that the mount survived in our test using our LG Coil over package are many.

** First our shock bodies are custom built shorter by Bilstein for LG. This was to allow the shock to be a shock rather than binding up and becoming a solid connection.

** we use high quality Hypercoil springs that have less coils in their windings compared to other brands yet produce the same spring rate in an 8" spring.

** Our top mount in the front coil over shock has a larger footprint and as such it distributes the forces in the stronger areas of the upper factory mount. If you bring the entire mount into play, it would take much more force than a 6x6 can generate just by driving over it.

Think of a hydraulic cylinder. If you put 1000 pounds through a 1/2 sq in area you have 2000 pounds per square inch force. But if you put 1000 pounds through a 2 sq in area you only have 500 PSI. So the load is spread out over a larger area.


Feel free to ask me any questions about the test or whatever.

Thanks
Lou G

The LOG:



THe Car:



THis is what happened with brand "P" coil over shocks that was the driving force in doing the test since

we felt it would not happen with our design.

The Reason it had to be done:

davidfarmer

nice video...the story continues

AZ FASTEST

Nice video production! I'm impressed!

0C5stein

Hello Lou and Louis,

My hat is off to you. You really put your money where your mouth is.

LG Motorsports

LG

Anomir

Thanks Lou!

63Corvette

I concur

LG Motorsports

My head is as hard as that 6x6.

LG

John Shiels

Now that is a good one Your mount was not designed like a paper punch :o

ghoffman

Nice job, I just wish we had some accelerometer data, but great job nonetheless!

LG Motorsports

Gary, just a note.
The camera that we used to film the suspension was a 30 frame per second camera. In slow motion, there is only one frame that shows the suspension all the way up at the top of the travel.

maybe you can use that as some kind of data point.

Thanks

LG

PS, we did it 6 times so maybe there will be more video that will help you. The camera didn't take it as well as the car, it got knocked around a bit and missed one run totally.

jhester

First, great test. It is excellent to get some real data surrounding all of the speculation and hearsay with this failure. Nothing speaks louder than FACTS and this test is proving those facts. Superior design results in superior performance.

As far as estimating acceleration, the video could be used to roughly calculate damper velocity, and acceleration could be roughly estimated from that result. If it is a 30fps camera, you may measure the number of frames from the normal shock position (pre-hit) to the full bump position.

Multiply the number of frames by 0.03333 and the resulting product is the number of seconds in which the shock traveled from normal height to full bump.

If you can measure this distance (or estimate it based on what the geometry looks like i the video) you can then divide the total damper travel (shock length in normal condition minus shock length in bump) by the time we found in the earlier step. distance/time = velocity, so now you have established your damper velocity.

As I said, the acceleration could be estimated from the velocity, but it would be a much less accurate resultant than the above velocity calculation.

I'm sure Gary can weigh in more on the topic.

Regardless, great test, I am looking forward to the full video.

fatbillybob

I'm a science guy and would have been fine seeing a "finite element anyalysis". Going the extra mile, you to lay 70 grand on the line and give us all a show...priceless! Excellent Lou!

abc 123

F'ing hilarious. The only and I mean the only guy in the game who will back it up.

Good job Lou.

LG Motorsports

Thanks guys,

We prepared the car enough to eliminate the parts that would get hurt doing the log jump.

I did waste the 2 right side wheels though. I put an old take off wheel on the front but I thought I might miss the rear wheel. NOT.

Damaged both wheels. Now they can go on the wall as a trophy with a photo showing both right side wheels in the air

Thanks
Lou G

abc 123

Lou, it also looks like you washed it. Your car was filthy at Miller.

0Bobby @ LG Motorsports

What, we washed it at the beginning of the weekend!? Too many bugs, and we never left early enough to wash it again

LG Motorsports

Like Bobby said. but I drove the car back and forth to the hotel and I have never seen so many bugs as there were on the road near Salt Lake City.

You would not want to drive out there on a motorcyle with a smile that is for sure.

LG

USAsOnlyWay

I love it!


Hopefully I'll be able to catch up with you guys this year at Laguna Seca.

MUKAK

wow!!

LG Covers it is 4 me!!!!

u got a lot of guts to drive a new Z over a 6x6.... prolly all the racing u did over the years..!!