In the next scca fastrack
11-14-2011, 03:25 PM
#1
Drifting
Thread Starter
In the next scca fastrack
ALL T1 cars get poly or delrin bushings........
C6 LS3 picks up a 60mm flat plate restrictor............behind the 90mm TB..........
ADDED: The spec line doesn't descriminate between the LS2 and LS3........looks like the 05-10 C6 regardless of motor caught the restrictor.
C6 LS3 picks up a 60mm flat plate restrictor............behind the 90mm TB..........
ADDED: The spec line doesn't descriminate between the LS2 and LS3........looks like the 05-10 C6 regardless of motor caught the restrictor.
Last edited by CP Thunder; 11-14-2011 at 05:53 PM.
11-14-2011, 04:04 PM
#3
Safety Car
That's cool to hear... guess that'll keep the LS2s in the hunt. Can a properly developed LS6 C5 still compete? It's basically the same car in a different wrapping.
11-14-2011, 05:49 PM
#4
Drifting
Thread Starter
What could be described as the best prepped C5 in the country with a really good shoe couldn't keep up with JB at the Runoffs.......will see what this does for parity........
Of course, JB doesn't suck either..........
ADDED: See my note in the OP
Of course, JB doesn't suck either..........
ADDED: See my note in the OP
Last edited by CP Thunder; 11-14-2011 at 05:53 PM.
11-14-2011, 10:29 PM
#9
Is there an advantage delrin over poly? Delrin is really easy to make yourself. I've done that with a cheap HFT mini lathe and $50 bucks worth of delrin. It does take a long time.
11-14-2011, 10:34 PM
#10
Drifting
Thread Starter
Joe told me they really have to work the fitment issues as apparently the control arms just don't all seem to be the same size............imagine that?
+1 on Gary at Hardbar's comment on FB about offering them soon. Joe is already selling them (a tad pricey for my taste but he does have the corner on the market so far). Lots of work involved.
+1 on Gary at Hardbar's comment on FB about offering them soon. Joe is already selling them (a tad pricey for my taste but he does have the corner on the market so far). Lots of work involved.
11-15-2011, 11:01 AM
#13
Tech Contributor
Out of curiousity, do these differences in control arms that you mention translate into actual differences in GEOMETRY? I guess I am wondering if the corners of the car can still be "squared" by "adjusting around" these differences.
Ed
11-15-2011, 01:01 PM
#14
My poly bushings are due for a replacement...considering Delrin since I need to be in there. What differentiates Delrin from poly when it comes to fitment? Seems like the same fitment issues should exist regardless of the material used.
Taking it one step further...do the fitment issues also exist with sphericals such as the Phadt kits?
What am I missing?
Taking it one step further...do the fitment issues also exist with sphericals such as the Phadt kits?
What am I missing?
11-15-2011, 01:49 PM
#15
Drifting
Member Since: Dec 2005
Location: Dayton, OH
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Delrin doesn't compress as much as poly.
The other huge benefit is that it doesn't bond to the aluminum like poly does when it gets hot.
The fitment issue is that the holes the bushings go in are not all the same size... I would guess as much as +/- .030.
This means sometimes you need to hone the hole to get the bushing in. With poly you just push harder and it will go.
With Delrin and Sphericals that doesn't work so well.
This is why DRM has you send your control arms to them to have the sphericals installed.
I just used a brake cylinder hone until the bearing slid in with a little pressure...worked great.
Delrin is about as close as you can get to sphericals as far as the amount of deflection allowed but it still has a bit more friction than a bearing.
The other huge benefit is that it doesn't bond to the aluminum like poly does when it gets hot.
The fitment issue is that the holes the bushings go in are not all the same size... I would guess as much as +/- .030.
This means sometimes you need to hone the hole to get the bushing in. With poly you just push harder and it will go.
With Delrin and Sphericals that doesn't work so well.
This is why DRM has you send your control arms to them to have the sphericals installed.
I just used a brake cylinder hone until the bearing slid in with a little pressure...worked great.
Delrin is about as close as you can get to sphericals as far as the amount of deflection allowed but it still has a bit more friction than a bearing.
11-15-2011, 02:24 PM
#16
Drifting
One additional issue for some of the pivot points: poly deflects, delrin doesn't, and when you have an arm setup that requires deflection in order to align the car (think the rear lower LCA), delrin isn't going to work.
I think Phoenix gets around that by custom drilling the center hole in the arms where they need it done in order to get the alignment.
I think Phoenix gets around that by custom drilling the center hole in the arms where they need it done in order to get the alignment.
11-15-2011, 03:02 PM
#18
Drifting
Member Since: Dec 2005
Location: Dayton, OH
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One additional issue for some of the pivot points: poly deflects, delrin doesn't, and when you have an arm setup that requires deflection in order to align the car (think the rear lower LCA), delrin isn't going to work.
I think Phoenix gets around that by custom drilling the center hole in the arms where they need it done in order to get the alignment.
I think Phoenix gets around that by custom drilling the center hole in the arms where they need it done in order to get the alignment.
Once the camber is locked this won't be an issue.
11-15-2011, 03:17 PM
#19
Supporting Vendor
Mid atlantic Corvette racing league forming for 2012
Several C6 Z06 drivers are prepping cars with roll cages...
We decided tto start a corvette only racing league at NJMP using SCCA and NASA dates..
we will have two classes, Similar to NASA and SCCA.
More details coming.
Anyone interested?
We decided tto start a corvette only racing league at NJMP using SCCA and NASA dates..
we will have two classes, Similar to NASA and SCCA.
More details coming.
Anyone interested?
11-15-2011, 03:33 PM
#20
Tech Contributor
Joe,
Bill Lex did this a few years ago, as a pseudo-revival of the Corvette Challenge. These were races-within-races, sanctioned by SCCA, and populated primarily by ITE class cars. For the series, restrictions were placed on wheel width, and there were two groups: slightly modified, and heavily modified. I can not recall if it was specified, but as far as I know, only C4s and C5s competed.
Bill was able to secure some significant contingency support from vendors (like Hoosier and Goodyear) in addition to the normal SCCA winnings, based on standings in "the season-long Championship". The series ran from Road Atlanta, to VIR, to The Glen, to Mid-Ohio, and if memory serves me, up to ??Mosport??
If his experiences with organizing and directing the series would be helpful to you, I am certain I have his number around somewhere - let me know.
Ed
Bill Lex did this a few years ago, as a pseudo-revival of the Corvette Challenge. These were races-within-races, sanctioned by SCCA, and populated primarily by ITE class cars. For the series, restrictions were placed on wheel width, and there were two groups: slightly modified, and heavily modified. I can not recall if it was specified, but as far as I know, only C4s and C5s competed.
Bill was able to secure some significant contingency support from vendors (like Hoosier and Goodyear) in addition to the normal SCCA winnings, based on standings in "the season-long Championship". The series ran from Road Atlanta, to VIR, to The Glen, to Mid-Ohio, and if memory serves me, up to ??Mosport??
If his experiences with organizing and directing the series would be helpful to you, I am certain I have his number around somewhere - let me know.
Ed
Last edited by RacePro Engineering; 11-15-2011 at 03:51 PM. Reason: Additional