The STX thread!
#580
悪魔のR
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Meh, yeah R comps are nice and all but I still want to improve on my own skills a bit more before getting a set of R comps. Think I'll run star specs of 255/35 next year and then R comps the following. That'll be fun. :D
#581
mkuhnracing.com
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The 2010 Schedule has been Released!
For those of you who havn't seen it yet.
2010 Tire Rack® SCCA Solo National Tour Schedule
March 13 - 14
Dixie National Tour
South Georgia Motorsports Park
Cecil, Ga.
March 20 - 21
Texas National Tour
TBD
April 10 - 11
San Diego National Tour
Quallcom Stadium
San Diego, Calif.
May 15 - 16*
Western States Championship
Wendover Airport
Wendover, Utah
May 29 - 30
Eastern States Championship
Arkansas Aeroplex
Blytheville, Ark.
July 3 - 4
Peru National Tour
Grissom Aeroplex
Peru, Ind.
July 10 - 11
Finger Lakes National Tour
Seneca Army Depot
Romulus, N.Y.
Aug. 7 - 8
Packwood Tour
Hampton Mills
Packwood, Wash.
Sept. 7 - 10
Solo National Championships
Lincoln Airpark
Lincoln, Neb.
Oct. 23 - 24
Tri-State Tour
Arkansas Aeroplex
Blytheville, Ark.
2010 Tire Rack® SCCA ProSolo Series Schedule
April 17 - 18
Round One El Toro Airfield
Irvine, Calif.
May 1 - 2
Round Two Lincoln Airpark
Lincoln, Neb.
May 22 - 23
Round Three Wendover Airport*
Wendover, Utah
June 5 - 6
Round Four Arkansas Aeroplex
Blytheville, Ark.
June 19 - 20*
Round Five FedEx Field
Largo, Md.
July 17 - 18
Round Six Toledo Express Airport
Toledo, Ohio
July 31 – Aug. 1
Round Seven Hampton Mills
Packwood, Wash.
Sept. 4 - 5
Round Eight Lincoln Airpark
ProSolo National Series Finale Lincoln, Neb.
* - Tentative
For those of you who havn't seen it yet.
2010 Tire Rack® SCCA Solo National Tour Schedule
March 13 - 14
Dixie National Tour
South Georgia Motorsports Park
Cecil, Ga.
March 20 - 21
Texas National Tour
TBD
April 10 - 11
San Diego National Tour
Quallcom Stadium
San Diego, Calif.
May 15 - 16*
Western States Championship
Wendover Airport
Wendover, Utah
May 29 - 30
Eastern States Championship
Arkansas Aeroplex
Blytheville, Ark.
July 3 - 4
Peru National Tour
Grissom Aeroplex
Peru, Ind.
July 10 - 11
Finger Lakes National Tour
Seneca Army Depot
Romulus, N.Y.
Aug. 7 - 8
Packwood Tour
Hampton Mills
Packwood, Wash.
Sept. 7 - 10
Solo National Championships
Lincoln Airpark
Lincoln, Neb.
Oct. 23 - 24
Tri-State Tour
Arkansas Aeroplex
Blytheville, Ark.
2010 Tire Rack® SCCA ProSolo Series Schedule
April 17 - 18
Round One El Toro Airfield
Irvine, Calif.
May 1 - 2
Round Two Lincoln Airpark
Lincoln, Neb.
May 22 - 23
Round Three Wendover Airport*
Wendover, Utah
June 5 - 6
Round Four Arkansas Aeroplex
Blytheville, Ark.
June 19 - 20*
Round Five FedEx Field
Largo, Md.
July 17 - 18
Round Six Toledo Express Airport
Toledo, Ohio
July 31 – Aug. 1
Round Seven Hampton Mills
Packwood, Wash.
Sept. 4 - 5
Round Eight Lincoln Airpark
ProSolo National Series Finale Lincoln, Neb.
* - Tentative
#582
Row faster, I hear banjos
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With the money I'll be spending on my car over the winter, I may just do the Finger Lakes NT and call it a season in 2010. Definitely want to do some sort of school, a couple test & tunes, and a bunch of local events in 5-6 different regions/clubs to get as much seat time as possible.
Got my Racing Beat intake and adjustable rear swaybar installed this weekend. Hope to complete the exhaust stuff in the next 6 weeks.
Got my Racing Beat intake and adjustable rear swaybar installed this weekend. Hope to complete the exhaust stuff in the next 6 weeks.
#584
Row faster, I hear banjos
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The Finger Lakes NT is closer to me and the STX turnout is always strong there. I may even skip the DC Pro for the first time in 3 years. Just not sure at this point. I'd just rather put money into my car, than burn it up by traveling to national events all over the country (in a semi-prepped car). Hopefully, by the start of 2011 season, she'll be well-prepped and ready to roll!!!!
#585
Registered
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Ride Frequency
Did some calculations yesterday. KWs have a 455 front spring rate. With a .752 installation ratio & 700 lb unsprung weight, that gives a ride freq of 2.66 Hz. A little lower if I throw in a guess at the tire spring rate.
I've had folks (succesful folks at that) say that perhaps this should be a little higher, but those folks were setting up strut cars. Not sure if it's needed for a double wishbone car.
Any opinions? Anybody going to try something closer to 3 Hz?
I've had folks (succesful folks at that) say that perhaps this should be a little higher, but those folks were setting up strut cars. Not sure if it's needed for a double wishbone car.
Any opinions? Anybody going to try something closer to 3 Hz?
#588
悪魔のR
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You'll have to forgive me if I've missed it as I've looked everywhere..but what the hell wheels is Jason running this year? They look pretty decent. They look similar to the wheels you're running as well Doc, but I could be wrong too. Let me in on the secret please? :D Also, am I pretty much the only RX8 on this board who runs in SM? Makes me wonder if I should unmod so I can go into STX or something..lol
#589
Row faster, I hear banjos
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You'll have to forgive me if I've missed it as I've looked everywhere..but what the hell wheels is Jason running this year? They look pretty decent. They look similar to the wheels you're running as well Doc, but I could be wrong too. Let me in on the secret please? :D Also, am I pretty much the only RX8 on this board who runs in SM? Makes me wonder if I should unmod so I can go into STX or something..lol
Jason is on Forgeline wheels. Not sure which model, but their stuff is uber pricey as it's custom. A friend of mine has a set on his E46 M3 and they ran him around $800 per wheel iirc. Too pricey for my blood...
I think the RX-8 could do well in SM with the right choice of "power adder".
#590
悪魔のR
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Marc,
Jason is on Forgeline wheels. Not sure which model, but their stuff is uber pricey as it's custom. A friend of mine has a set on his E46 M3 and they ran him around $800 per wheel iirc. Too pricey for my blood...
I think the RX-8 could do well in SM with the right choice of "power adder".
Jason is on Forgeline wheels. Not sure which model, but their stuff is uber pricey as it's custom. A friend of mine has a set on his E46 M3 and they ran him around $800 per wheel iirc. Too pricey for my blood...
I think the RX-8 could do well in SM with the right choice of "power adder".
#591
Row faster, I hear banjos
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I've yet to see someone who's making too much with an RX-8. I've seen a dyno graph for the Strelnieks' 3-rotor SSM RX-7, and that beast makes ~480whp with a torque curve that's flat as a pancake.
Edit: Here it is...
Edit: Here it is...
Last edited by chiketkd; 11-18-2009 at 01:35 PM.
#593
Did some calculations yesterday. KWs have a 455 front spring rate. With a .752 installation ratio & 700 lb unsprung weight, that gives a ride freq of 2.66 Hz. A little lower if I throw in a guess at the tire spring rate.
I've had folks (succesful folks at that) say that perhaps this should be a little higher, but those folks were setting up strut cars. Not sure if it's needed for a double wishbone car.
Any opinions? Anybody going to try something closer to 3 Hz?
I've had folks (succesful folks at that) say that perhaps this should be a little higher, but those folks were setting up strut cars. Not sure if it's needed for a double wishbone car.
Any opinions? Anybody going to try something closer to 3 Hz?
2 Hz is entering the regime of aero racecars. You would need 900 lb/in springs to get to 2.66 Hz. Perhaps you have a factor of 2 error somewhere in your calculation. I have 900 lb/in springs in my s2000 with a similar motion ratio and it's very stiff. Not fun on bad roads, but great on smooth tracks. It can handle r compounds no problem, but I am going to be reducing the spring rate in search of more mechanical grip on less-than-ideal surfaces (ie autox parking lots).
#595
Row faster, I hear banjos
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That's what I assumed you meant...
While there probably is a limit (would vary depending on surface grip level), if an SSM FD can utilize ~480whp, I'm sure our cars could be set-up to work in an autocross setting at that power level.
That's the beauty of Street Mod, in many ways you get to set the limit.
While there probably is a limit (would vary depending on surface grip level), if an SSM FD can utilize ~480whp, I'm sure our cars could be set-up to work in an autocross setting at that power level.
That's the beauty of Street Mod, in many ways you get to set the limit.
#597
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Hrmph. No spring rate information in Jason's STX build-up article in Sports Car.
Some interesting tidbits, though:
- MS front bar, no rear bar. Must mean some fairly aggresive spring rates?
- neg 3 front camber, -2.5 rear. 1/2 degree more than I ran, F&R.
- Nice Hp numbers (221/154), but it was on a Dynapack hub dyno. Not sure how those compare to a Mustang.
- Sweet wheels & brakes (but we already knew that)
A nice build, to be sure.
Some interesting tidbits, though:
- MS front bar, no rear bar. Must mean some fairly aggresive spring rates?
- neg 3 front camber, -2.5 rear. 1/2 degree more than I ran, F&R.
- Nice Hp numbers (221/154), but it was on a Dynapack hub dyno. Not sure how those compare to a Mustang.
- Sweet wheels & brakes (but we already knew that)
A nice build, to be sure.
#598
Registered
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Spot on - I had 2*pi under the sqrt, needed 4*pi.
So, as you say, 1.88 Hz. 1.68 for the rear, with a quoted spring rate of 285, but that's a progressive spring so who knows what I actually get. These numbers makes a little more sense as my car has moderate body roll and is quite comfortable day to day, with the stock seat.
This is where Mark tells me to raise it up (the ride height that is.
500 lbs on the front gives 1.97 Hz, 550 = 2.07.
Meh. I should probably just leave it and optimize the setup (and my driving!).
Deleting the rear sway is also something I've wanted to try. It's common in the Miata world, but I know that at least part of the reason for that is the funky spring rates the JDM coilovers come with (too much rear spring).
Perhaps I'll try a stiffer linear spring on the rear with no rear sway, see if the power goes down better.
So, as you say, 1.88 Hz. 1.68 for the rear, with a quoted spring rate of 285, but that's a progressive spring so who knows what I actually get. These numbers makes a little more sense as my car has moderate body roll and is quite comfortable day to day, with the stock seat.
This is where Mark tells me to raise it up (the ride height that is.
500 lbs on the front gives 1.97 Hz, 550 = 2.07.
Meh. I should probably just leave it and optimize the setup (and my driving!).
Deleting the rear sway is also something I've wanted to try. It's common in the Miata world, but I know that at least part of the reason for that is the funky spring rates the JDM coilovers come with (too much rear spring).
Perhaps I'll try a stiffer linear spring on the rear with no rear sway, see if the power goes down better.
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#600
悪魔のR
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-Marc