PDA

View Full Version : Right front compression



hucktyson
09-01-2015, 06:42 AM
How much right front compression @ 1,3,6,9" are people typically running on the right front on big fast race tracks like eldora or Pittsburgh ?

save the racers
09-01-2015, 05:51 PM
Never been to those 2 tracks.Don't have my sheets in front of me but I'M at 100 to75 lbs between 3 to 6 with a digressive piston.

hucktyson
09-02-2015, 08:33 AM
100# at 3@ and 75@ 6 isn't digressive it's regressive ...

hucktyson
09-02-2015, 08:34 AM
And as a follow up question how about at tazewell when it's hammer
Down ?

7uptruckracer
09-02-2015, 09:34 AM
Whatever it takes to keep it outta the race track. You can't go off compression alone. We didn't change anything on the Shock when we went to Eldora we just didn't get low on the RF spring stayed around a 350.

Brian Gray
09-02-2015, 08:14 PM
Tazewell and bulls gap typical shocks have very high compression numbers. Near 700 lb of clamp compression on linear Pistons up in the 1000s mid rate.

I have never built an eldora shock with those kids of rates on compression though. Everyone i do shocks for are very average on the compression at eldora. with exception of 1.

fastford
09-03-2015, 10:47 AM
there you go teasing us again, if your not gone tell who and what the " 1 " is, don't even mention it....

hucktyson
09-03-2015, 12:31 PM
When you say " clamp " I assume you mean zero point ... Do you run a steel body at that point ? Even at 5 or 600lbs of zero point I feel significant expansion of the body on the dyno ....

Brian Gray
09-03-2015, 08:24 PM
Yes when I say clamp I'm talking about the starting point or zero.

And yes we have had some failures. Mostly with alum pistons. No body issues yet.

Brian Gray
09-03-2015, 08:32 PM
The 1 Ford i s me . only because of the steel block.

hucktyson
09-04-2015, 05:06 AM
I wasn't suggesting the body would fail. I built a shock that made 2200 zero point and 4975 @5" per second based on advice of a soo called specialist . And there was any failures but it seems that when you can feel the body expand as the piston passes that a steel body would be much more consistent in such a build

Brian Gray
09-04-2015, 06:50 AM
As long as you are taking that variable into the equation when managing the flow rates I don't see any problems.

But yes the steel shocks I do are much more consistent over the temp range than the alum tube. Significantly more stable, It's goes the same for fixed valve vs adj shocks. I believe afco is coming out with a stainless tube insert for the new body that will help some with deflection. I'm still waiting for an official word if this is happening.

Brian Gray
09-04-2015, 07:01 AM
If your having issue with the bulge run some porting into the band on the side (comp/rebound ) where you are seeing the loss. I start With a #7 and drill from center of the band into the port. This will help push the band against the body when the pressure gets extreme.

Usually takes most of the variation out.

TALON75
09-05-2015, 03:41 PM
The only way I see any of the numbers you two are throwing around working, you would have to move the decimal point to the left.

Brian Gray
09-05-2015, 11:27 PM
When you give away the secrets someone will have to chime in and say your full of it. Believe what you want but I'll lay some cash down that says the club car you guys will have at eldora has more than 70. Lbs of comp . In those fronts

You want to take that bet?

TALON75
09-06-2015, 03:36 AM
Unfortunately we won't be at Eldora. Like I said move the decimal point and you might be close. Keep your secrets guru. We even ran decent(for a California rookie) at the Taz without what your talking about. One thing I have learned in my workings with shocks is that overdampening is overrated. Good luck to you.

hucktyson
09-06-2015, 07:29 AM
I was not saying that those numbers are needed . I said I asked a manufacture rep how to achieve a certain graph on rebound closed and what he told
Me to put in there resulted in those numbers. I highly doubt anyone is running 700lbs of zero point on the compression side at a dirt track, but I do not doubt for a second that people are running more than 70lbs @3". The only people who know exactly what numbers the shocks on the zero and 6 are making are Bloomquist and rumley themselves. The guys buying cars from the " boutique " car builders have to know the shocks they get are not the same. There is no way on this earth that you are going to beat the zero on a consistent basis using info someone else gave you. The fast guys are the fast guys because they are able to figure it out themselves ..

Brian Gray
09-06-2015, 09:37 AM
I am being very honest with you on the comp numbers for the taz. More so for the gap. Like you asked. In no way do I believe that would work at eldora. But then again I haven't tried a Hcss setup there either . Might work we have had some success at Winchester this weekend on the asphalt.

DEKconsulting
09-16-2015, 10:10 AM
Just from lookin on here and what people say i would need to c results from ur numbers and i can say that i dont see The Brian Gray name on any winning lists this yr or am i lookin at the wrong spots. do i say prove ur selve with results not words

Brian Gray
09-16-2015, 10:40 PM
Hey (not a nice word)(not a nice word)(not a nice word)(not a nice word). Bryson Clark has some wins in the mod . And then there's this http://youtu.be/KeV9x4_eLwY should I go on ?

let-r-eat
09-17-2015, 01:52 AM
I posted here many years ago about high dampening rates. Overrated is an understatement.

Brian Gray
09-17-2015, 02:09 PM
My guys and gals have tallied up more than 65 wins this year combined along with 11 world records.

Dek I don't know how or why I am even arguing this. Thank for making me break my resolution. I try and be honest but obviously you can only lead a horse to water.

let-r-eat
09-17-2015, 08:52 PM
There's several wins scattered all over this board of knowledge.


Once you explain the science behind your 1000# at zero shocks then you might catch a little of my attention.

save the racers
09-17-2015, 09:03 PM
Why do you feel it is better to add so much comp. rather than work with the spring or rebound.I am finding the some problems that, when you get in the high lbs numbers the off the shelf parts are not consistent and have to be rebuilt often.

Brian Gray
09-18-2015, 07:28 PM
I don't feel one is better than another. Huck asked how much compression were guys running on fast high banked tracks ?

I told him what I was building for tracks like tazewell and bulls gap. Those high clamp shocks are winning races there.

Why do I feel it's better to use this approach is simple physics and timing. You have to remember though what works for one may not work for another. That's why ask a lot of questions before I build a shock for someone. A lot more questions than a feel like typing.

Brian Gray
09-18-2015, 07:34 PM
Shocks are complicated tuning devices. We are still learning new uses for them and even finding out new interesting ways to interact with the car.

I believe there are some great things that will be coming out soon that will really make this sport grow.

DEKconsulting
09-20-2015, 12:29 AM
Really i thought we were talkin late models not street cars.LMAO NEED I SAY MORE

Brian Gray
09-20-2015, 10:13 AM
Im everywhere that's how you master a skill ! I love dirt late models but I'm a racer first dek, my late model guys are doing extreamly well too. Stay outside of the box my friend .

Save the racers if you have questions call the shop through the week there's no magic in these things just a lot of misunderstanding. 513-519-7745
That's all

Brian Gray
09-20-2015, 10:21 AM
Btw that street car is up over 60,000 views in just a few days. It's actually a big deal in that world . That's why I shared it.

manwplan
09-21-2015, 08:51 AM
DEK you are no better than Brian. You claim to be a consultant. How about you tell us your drivers and big wins?

DEKconsulting
09-23-2015, 12:54 PM
I help some teams in my area that do good. i never once said ive won big races. Yes we win some races but u never see me on here tellin this or that like gray actin like he is the best in business (not a nice word)(not a nice word)(not a nice word)(not a nice word) Thank u

Dirt2727
09-23-2015, 06:52 PM
I , for one. appreciate the tech and knowledge that Brian shares with us.

swartzman
09-24-2015, 05:25 PM
See that's the problem on here, if someone throws out there what they are doing and having luck with it, 100 different people would come back and tell you, your crazy that will never work.. there are some people who have different people helping with shocks, setup's and so forth that they do not tell others who is doing what for the sheer fact they do not want other people to get the same knowledge. It's like I keep telling everyone your going to have go test and learn what works for you.

fastford
09-24-2015, 05:38 PM
this is true swartzman , but it helps to look at others cars as well as read all you can whether internet or books to get ideas to test. ive tried some of the stuff ive read about on here that others made fun of and called it crazy, most didn't work for me, but some did.

swartzman
09-24-2015, 06:04 PM
That's why I always say in this day in time your going to have to test.