Check it out.

http://www.fullboost.com.au/video_get.php?id=230

 

Nice vid!

I had to register to view it. For those who don't want to register, I uploaded it here...

http://www.rx7s.com/tandrracing/movi...s_StreetFD.avi

Anthony

 

I wonder if he's using the stock tranny and if so how he's making it hold up. That's actually putting down pretty good power. The car seems to fall on it's face everytime he shifts into 4th gear and still runs the number. I don't know the weight but i'd guess he's putting down in the neighborhood of 650+rwhp. Anyone know any specs on the car?

 

It seems like he's actually having a problem on the 4th gear shift. Might be a worn out tranny or driver error.

 

Schechter put up more mph and better et with only 630whp.

 

I saw another pass form that car fron the same night at the track where he did a 10.00@143mph.

 

No matter how you look at it, that's a killer car !

 

I wish we knew what his 60 foots were like.........


I also uploaded it to http://videos.streetfire.net/video/b...eb83499916.htm

 

The reason why i said 650 was because of his 4th gear efforts and still running the number. The 2nd pass you can hear him just start to accelerate again after getting it into 4th which had to seriously hurt both et and mph.

 

Looked good. I remember Dan was wanting to stiffen his car up becaused he was bouncing alot. This guy looked like a see saw and still flew. I suppose the key is a hell of a soft suspension.

 

I don't know about that soft suspension stuff. I could be wrong but it hasn't worked for anything we've done that has any amount of power. That aussie car lost et from his suspension being too soft. If you watch the video closely you can see and hear the cars suspension bottom out. What i mean by hear is you can tell he lets off cause the car unloads. That's not a good thing.

There are alot of other factors involved but that's just one that i see on that particular car. I also watched Dan's 9.78 pass and it looks to be set up almost perfect. It has a little bounce but squats nice. The only thing i would change on his car is the rebound. Once it settles it needs to stay settled and not come up so fast. That's where double adjustables come into play.

 

This video that Crispeed posted in Erics thread shows what i'm talking about. Look at Adams suspension setup as he's going down the track.......just PERFECT!!!

http://videos.streetfire.net/categor...3913572524.htm

 

Yeah, he's gotta be running a auto.......... that front end never dropped !

 

No he's not.
It's called the right shock setup. Rebound rate is perfect on Adam's car. Double adjustable is the way to go. Rebound rate is very important especially when you're dealing with IRS.

 

does he still have that car?

 

What would the difference be between an IRS car and a solid rear car regarding the double adjustables?

 

Im no expert, but I know its a lot easier to the a solid rear car to hook up.

 

It the HKS coil overs, best **** out there for IRS. the shocks doesnt shot the springs back up like other shocks do, these go up slowly

 

I already own these HKS Drag coilovers for my FD. Just curious why a double adjustable makes any more difference on an IRS compared to a solid rear. I have never heard that before, so I am just trying to learn why.

 

On a IRS car you cant set the pinion angle to shock the tires on lanch.(this is not 100% correct but its the best way to explain it with out typing out 4 pages) So low speed rebound becomes much more important than on a solid rear. In maintaining traction.


But, good double digresive shocks are normaly very expencive. I think the Penske 8760 is about the cheepest double digresive shock availible that can be configured for the rx7. Its normaly use in road racing. But any good shock tech with a shock dyno. Can give you any force/time curve you are looking for.


One saving grace about the 8760 is the shims,orifce toobs,and circut bypass valves are cheep. so tuning them is cheep. Other than the tech and dyno time of corse.

 

I never thought Penske had any cheap shocks!
Then again everyone's idea of cheap is different.
Koni use to have a nice drag setup for the FD.

 

That's what we use on our Supra.....the Koni's not the Penske's. Penske shocks are alot of $$$$!!!! $800 for 1 shock is a little much IMO.

I have Afco's on my car which are double adjustables for sure.

 

Yes, no one would ever call penske shocks cheap. Not by a long shot. But for being a TRUE double digresive, they are about the cheapest i know of. I have seen some companys bill their shocks as double but in reality they were single digresive with a expansoin chamber to act some what like a true double digresive.


Single digresive normaly are only adjustable for

#1 compression
#2 rebound

(the digresion is not normaly adjustable)


Double digresive are adjustable for

#1 Low speed compression
#2 compression digression (the point where you transfer from low to high circuit)
#3 High speed compression


#4 low speed rebound
#5 rebound digression (this is the point where you go from the low speed circuit to the high speed)
#6 High speed rebound