The Perpetual "What Gearing Do I Run at This Track?" Thread

[Motorsport Services]

...OH GREAT FC ORACLE....
How about kickin' out some Buttonwillow 10:31 gear recommendations?!?
( I promise I won't pass you!!!)( I just want a good look at Rick Kirchner's rear wing!)

[Rick Kirchner]

18-34, 20-32, 22-30, 23-28 Your mileage may vary

I think you've set the record for "lowest goal set", as BW13 is where I'm even slower than usual!

Found a cracked header and 100% leak in the corresponding cylinder last night, so I'm doing an unexpected head job.

SLC is a helluva tow to Buttonwillow! 12 hrs?

[aintlifegrate]

Does anyone have a clue where to start for gearing at the Nasville Track? There is an event there Labor Day.

Thanks, Mike

[rickjohnson356]

Is there a track map available somewhere? That would be the first place to start. We could compare to existing tracks for a starting point.

I expect that after the first session, there will be a lot of cars with their rear ends up in the air.

[GT1Vette]

I'm not in a formula car, but I DID stay in a Holiday Inn...

I've run both, and a good starting point for Nashville will be what you run at CMP. Top end should be very close to the same and both tracks have tight stuff that you'll want a grandma low to pull out of.

But then a taxi-cab has a bit more bottom end than a Pinto does.

[aintlifegrate]

I'm new at this but I think that taxicab remark was an insult?

Rick there is a track map at the Nashville speedway site- see if you can figure out how it will be run?????

Thanks,
Mike

[ghoneycutt]

recommended gears for Pocono South?

10/31 R/P

Thanks,
Greg

[Rick Iverson]

Fellas;

I went to the "Baseline Gearing" information on RA for my RF-94/95 (10:31), where it listed:

• 18:32
• 20:30
• 23:28 (yes)
• 23:24

Taylor Race Engineering has it at:

• 19:32
• 21:30
• 21:25
• 25:27

These are not even close. Any help?

Iverson

[hthierry]

Please post your requests for baseline gearing setups in this thread. It will prevent redundant requests and also make it much easier to find.

BASELINE GEARING FOR MOST TRACKS

The SCCA Chicago Region is holding a regional race at Autobahn on July 29-30 and it looks like they are going to use the South Track which is 2.1 miles and 15 turns. If you check out the Autobahn web site http://www.autobahncountryclub.net/ you can see the course layout. It is really a nice facility as I went there last year and got a lap of the North Course from the Director of Marketing.

The South Track looks like you might be able to run similar gears as Blackhawk Farms.

Does anyone have any gearing ideas for Autobahn for FC or CFC?

Terry

[Keith Carter]

it looks like they are going to use the South Track which is 2.1 miles and 15 turns.

Where did you find this out from? Up until now they have run the North course. It would be good to have another track to add to the books.

EDIT:
Nevermind... I found it listed on the Autobahn calendar.

http://www.autobahncountryclub.net/xCalendarjuly.html

[hthierry]

Rick,

I just did a review with Taylor for my 84 Reynard CFC 10:31 ring and pinion for RA.

Here is what they recommended for me and what I found out from various sources.

1st - 18:32 = 1.77
2nd - 20:30 = 1.5
3rd - 23:27 = 1.26
4th 24:26 = 1.08 or 25:26 = 1.04

If you run Grattan also, you will see the ratios there are very close and you can run the same ratios if it is an occasional event Vs your home track. I have not run Road America and am looking forward to the June 17 - 18 race. Perhaps someone who actually has run RA with these or similar gears has a view.

I would contact Taylor and talk to Craig and get his thoughts.

Terry

Fellas;

I went to the "Baseline Gearing" information on RA for my RF-94/95 (10:31), where it listed:

• 18:32
• 20:30
• 23:28 (yes)
• 23:24

Taylor Race Engineering has it at:

• 19:32
• 21:30
• 21:25
• 25:27

These are not even close. Any help?

Iverson

[Westroc #19]

Has anyone come up with anything yet?

[Bob Atkinson]

Anyone have gears for Pueblo? I raced there (what seems to be) a long time ago in a DSR but have no notes left and I don't find any on the thread. Seems like they were like Lake Afton- another indication of my age. Thanks for any help!

[DaveW]

Anyone know what gears to run for the HPT "Runoffs" course?

[M.L.Sauce]

Dave- I ran in my FF 17/34,19,32,22/30,24/28.I prepped the FC that finished 2nd to N. Coello and we had 18,34,20/32,22/29,24/27.It is a good starting point.

[DaveW]

Thanks, Mike!

What rev limit and tire circumference were you using with those gears? I assume it was a 10:31 R&P.

[Ian McKechnie]

Can anyone advise as to the gears I should try for the current (with chicane) SCCA long course at Pocono for a 10:31 final drive??

[anthonywill3]

Can anyone advise as to the gears I should try for the current (with chicane) SCCA long course at Pocono for a 10:31 final drive??

Ian- This is what I dug up for Pocono (pro) Long course. I am running a close derivative (I dont have all the exact ratios)
Suggested 19:33, 21:30, 23:28, 25:26


Say hi to Doug, see you guys Sunday!

Tony Williams

[aintlifegrate]

Can anyone give me a starting point for gearing Mid America (near Omaha)?

[Phil Picard]

Seems my cars are going to Canada. And I promised Gear-sets to match. sooooooo any body ever hear of a track called Race City Calgary? and knows what FC MK9 gears work there?

Thanks
Phil

[RacerDave51]

It's my first trip the Gateway in this car so I did a search on the subject and folks have hit all around it but nothing definitive for FC. Is anyone using anyone using a 25:27 or 24:26 (or????) 4th? Some are using 24:27 but that seems low...

Travis at Taylor Eng. was helpful but admitted their data is dated & not definitive either (3 different numbers).

Thanks,
DaveK

[frankwissman]

Hi, Could someone share their baseline gearing for Thunderhill and Laguna, please? Also, is there a site to better understand the methodology of selecting gears? Thanks!

[Mike Allison]

VIR...Anyone care to venture a gear selection for Club Ford at the VIR North Course. 9:31 R&P.

Thanks,
Mike

[jdp526]

Hello, I just found this site tonight and I am going to be looking for lots of info on FC racing. I bought a '90 Reynard recently and the car will need lots of attention before it can be run again. I plan to run the car in autox and solo I events so that I can learn to tune and prep the car. Later on I would like to run in some drivers' schools and possibly some road races.

The car is set up with 10:31 r&p, and the following gears: 1st 18:25, 2nd 21:30, 3rd 23:28, 4th 25:27.

Can anyone suggest possible gear combos that would work for medium speed autox events? Thanks,

[racer27]

Anyone have gear Reccommendations for Summitt Shannondoah Course... FC w/10:31

[Gary_T]

I'm looking for some gear hints for Mosport in Ontario, Canada. I'm running an '84 Reynard F2000 with a mk IX hewland, 9:31 R/P, 22" rears, and 7K rpm limit.

Even min/max speeds expected in an F-2000 on Mosport would be a good start!!!

Thanks,
Gary

[glenn cooper]

Hi All, I did not see Barber listed. Anyone? Bueller?
Might just have to run it as a 3 speed box!
GC

[Purple Frog]

Basically the same gears as CMP...

ALL 10/31 R&P:


In '04 with the Tatuus @ Barber:
FirstSecondThirdFourth
17 17 21 24
33 28 29 28

Sean's gears in '03 Barber: (yes Sean, I keep everything)
FirstSecondThirdFourth
19 22 23 24
32 30 29 27

Sean's gears in '04 Barber:
FirstSecondThirdFourth
18 20 22 21
32 32 30 25

Mike's gears in '03 Barber w/Reynard:
FirstSecondThirdFourth
18 20 22 24
33 30 29 27


Tatuus in '05 at CMP:
FirstSecondThirdFourth
19 21 22 24
33 31 28 27

Sean in '04 at CMP:
FirstSecondThirdFourth
19 21 22 24
32 31 29 27

Sean in '03 at CMP:
FirstSecondThirdFourth
19 20 22 24
33 30 30 27


Tatuus in '04 at CMP:
FirstSecondThirdFourth
17 21 23 24
28 31 28 27

Reynard at CMP in '03: (CFC lap record at the time)
FirstSecondThirdFourth
18 21 23 24
33 31 29 27



I think Sean liked his '04 gears the best...

[glenn cooper]

That was rather succinct and as usual, quite forthcoming and factual.
GC

[rjnicholas]

Anyone have any ideas about gearing a 96 VD for Sandia Motorsports Park in Albuquerque? I did some driving there a few weeks ago and felt I should have been running lower gears. I was just wondering if anyone had any experience there.

[hthierry]

Autobahn Gearing South Track
Quote:
Originally Posted by Keith Carter
Please post your requests for baseline gearing setups in this thread. It will prevent redundant requests and also make it much easier to find.

BASELINE GEARING FOR MOST TRACKS

The Midwest Councill Sports Car Club is holding a race at Autobahn Country Club in Chicagoland area on Oct. 6-7, 2007. Last year the SCCA Chicago Region held a regional race at Autobahn on the South track which is 2.1 miles and 15 turns.

From the guys who ran the SCCA event last year including Keith Carter, did anyone come up with a good gearing selection for the track??? I know a lot of guys were changing gears after the first sessions.

If you check out the Autobahn web site http://www.autobahncountryclub.net/ you can see the course layout.

The South Track looks like you might be able to run similar gears as Road America.

Does anyone have any gearing ideas for Autobahn South Track for FC or CFC?

Terry

[doug rocco]

has anyone run and like to share new base line gearing for the new confiuration at hartland park topeka, fc , 10/31

thanks-doug rocco

[DaveW]

Last year I ran: 18/33, 20/31, 22/29, 24/27. I don't think the track changes will make much difference in gearing. I am going to start with these again this year.

I tend to run taller gears than most, so maybe a tooth down from that would suit you better.

[JByers]

From what I heard there seems to be some different thoughts on first gear but fourth gear is just slightly faster.

1st 17/33 or 18/34
2nd 18/29 or 20/32
3rd 22/29
4th 21/24 or 24/28

[doug rocco]

thanks dave, see you there

[racer27]

Does this sound about right FC @ Pocono North Gears w/10:31 R&P

1. 18/34
2. 20/30
3. 23/29
4. 24/27

[racer27]

Anyone have any gearing reccommedations for the NJMP Thunderbolt Config?

[racer27]

With all the racing that went on this weekend at Thunderbolt, anyone willing to share baseline gearing suggestions?

[Purple Frog]

I heard an unverified rumour that the fastest guys were close to VIR gearing.

It's a much faster track than first appears.

[Tigaman]

With all the racing that went on this weekend at Thunderbolt, anyone willing to share baseline gearing suggestions?

I practiced two seconds under the current S2 record in my Lola and used Summit/VIR 1-2-3 and a 24/27 top. Worked fine and hit the right rpm point at braking for T1 (beginning of the curb). Nice track, fun and fast. T8-T9 is a tough little booger.