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

Does anyone know what happened to the base line gearing sheet? When I click on the attachment for this tread I get a really nice track map of the Milwaukee mile? Not what I am looking for..

Can anyone help me with the proper gears to run at Mid Ohio with a 9:31.

I'm begging you guys...please!!:D

Brian Copperthite #31 FF

From the Jake Lamont book: 9:31 R & P

First 20 : 32, Second 22 : 29, Third 21 : 24, Fourth 26 : 26

Does anybody have suggestions for gearing at Chuckwalla with a 9:31?

Thanks

Did some searching, but unsuccessful.

Looking for gear suggestions for my first time at Road Atlanta in a Formula F (with Fit power, 29 mm restrictor).

10/31 R&P, Hoosier tires.

Thank you.

Saw a post from last summer but no response. Anyone have any insight into how different the gearing should be for the new Gingerman layout? My particular case is a CF with 9:31 gearing, but I can also extrapolate from other situations as long as I know what the change is from short to long course gearing.

Thanks,
Phil

Dunno Phil.... I just registered... you doing the national in a CF on Sunday? I am.. so you should too :-)

Here is a video of the new layout from last year... I've never been on the track, so I can't compare - but maybe take a look at the changes and take a few guesses. I heard longer straight...
http://www.youtube.com/watch?v=fKyEbVmGDHc

regards,

Mike

I've talked to a couple of people, and it seems that nobody really knows yet. I may just throw Grattan gears in it since I'll be going there two weeks later.

I'm just going to run the regional on Saturday. See you there.

Quote:

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Originally Posted by jgaither

Anyone have suggestions for CF gears for Charlotte Motor Speedway? Oh, I forgot. It's Lowe's these days. Well, I'm not as young as I used to be. Can't wait to see if I still need to raise the ride height to cure the bump out of NASCAR 4. Only place we ever raised it. Back in the Paleolithic era. Heck, I even raced there in the last ice age - it snowed at a spring national.

JG

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Same question, 5 years later ...

Looking for FF gears for Charlotte.

Or, if I could find out the approximate top speed, that would help.

TIA.

Update - Received the following email this week:

Many years ago I had an '85 VanDiemen and we ran a lot at Charlotte. With a 10:31 final we had good luck with these:
1 20-32
2 21-30
3 23-29
4 25-27

Thanks, Charlie!

Just as the title says! :)

(tried doing a "buttonwillow" search, but no luck...)

Thanks!

Anyone have a recommendation for Spokane gearing in a Vintage FF?

John Mihalich, Jr.

With the changes made on the track by the new owners (City of Spokane) prior to last years inaugural SOVREN race weekend, the following gearing is recommended: 18:33, 20:30, 23:28 and 25:26 with a 9:31 ratio. These gears also work very well for Seattle's Pacific Raceway if you're racing vintage or club ford. Some day you should consider SOVREN's NW Historics on July 4th weekend. It's a great 3 day weekend of racing with a FF and CF class of typically of 20-25 cars. This year's weekend begins on June 29th. Come join us. :) :checkered:

Anybody know a decent set for LimeRock with a 9:31 rear end. Thanks!

Saw a request for gearing for ORP but no answers.
We're looking for them as well to save gear swapping time at the track.
Car is a winged air cooled (180HP) SV, 9/31 R&P. Ran unknown gearing, seemed way too high for the low 60's temps. Track never made it above 65 so never got any really hot laps.

Any FF gearing suggestions for Nelson Ledges?

Thanks.

Planning to head to Barber for the double National in a couple of weeks. No practice day on Friday other than 20 minutes in the morning. Two 15 minute qualifying session in the afternoon.

There is one comment on Barber from quite a while back. Has anyone run at Barber recently that has a pretty good handle on gearing.

DB6 - Kent.

Just want to be in the ball park.

Thanks

OK, let's get this party started.
How about some thoughts on gearing for Austin? I'm guessing about the same as Road America or maybe Willows- throw out first gear, move the rest down and add a taller fourth.

I think Road America gearing will work but, if you try an inside pass at either hairpin you will probably need a stump pulled first.

Gear COTA same as Atlanta.

Maybe a slightly taller first gear.

And don't forget the loss of power given it'll be warm there, always. I was shocked when I saw the track elevation in person co,pared to pictures.

... I would guess the "old Sebring Hairpin" (as oppose to the current "Saftypin") is very similar to Turns 1 and 11; the Turns 12 and 13 also appear to be 90+ as does 20. I understand the "very wide" track will keeps speed up - that back straighaway is awfully long-- So my guess based upon a 9:31 - low horse (FF) powered car 17/34-18/34-18/33 1st and start w/ a 26/25 4th - fill in w/ correct gaps

- even-up 4th may be too low out of T11
- you'll need some torgue multiplication T20 to T1 to climb "Fill/Phil Hill".

Upon searching this topic, I find a gearing question for MSR-Houston asked, but I don't see any answer(s).

It looks like I may be attending the Feb. 21-24 race at MSR-Houston (2.38 mile, CCW). I have never been there. If anybody could offer recommended gear ratios for Citation 84F, FF (Kent), with 10:31 R&P, 22.5" Dia. rear Hoosier tires, I'd certainly appreciate it.

Thanks,

Al Essig

i would suggest giving mike sauce or wes cunningham a direct pm. you'll probably get a much quicker and more accurate response

Thanks for the advice, Ric. PM's sent 2/7. No news yet.

Al Essig

Information received and appreciated.

Thanks Wes!

Al

Which track will CENDIV race on when they do their National at Autobahn, and What gears would you suggest with a 10:31? Thanks.

Anyone know the right ratios for Palm Beach, Florida? I have a 9:31 R&P. Thanks

Several have asked but I don't see any answers. Anyone have suggested gears for Gingerman new layout, 9:31 R&P?
Thanks

Does anyone have gears for Autobahn South? Please include R&P and tire diameter. Thanks.

Planning to run with VARA at the Speedway road course in October. Would appreciate suggestions for gearing. Mk9 with 9:31 r&p.

I've got a 9:31 final drive in my RF89, and a lot of ratios to choose from.

Any thoughts on what gears I should run?

Alangbaker
You might give James Hepburn a call and pick his brain on gear selection for Mission.

I'll check in my box of gears and see if I have any notes that are apropos to the current track configuration and post tomorrow evening.

Thanks for the lead, Trout.

I spoke to a guy who runs regularly at mission (Felim Power) and he says that he and the fast guy at Mission both run:

1st - 17:34 (2.00:1)
2nd - 20:32 (1.60:1)
3rd - 22:30 (1.36:1)
4th - 23:28 (1.22)

And while I didn't have those precise ratios (except for 1st), I had other ratios which were awfully close and I just decided to use a slightly higher first:

1st - 16:31 (1.94:1)
2nd - 18:28 (1.56:1)
3rd - 20:27 (1.35:1)
4th - 19:23 (1.21:1)

So I'm within 3% of 1st and even closer for all the other ratios.

My thinking is that if my time in the car is still very limited (total time of about 2 hours in the car), then I'm better off a little high on the gearing to help keep wheel spin under control.

The shafts are assemble and in the carrier and I'll reinstall the whole thing in the main case tomorrow.

I'll report back on how it goes.

I need recommendations for a Mk 8, 9/31 CWP for Barber Motorsports Park. I drive a 1972 Elden PH-8 club ford.

Thanks,

paulcrouch@yahoo.com

Quote:

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Originally Posted by legends7123

Anybody know a decent set for LimeRock with a 9:31 rear end. Thanks!

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I'm also looking for suggestions for Lime Rock gears with a 9:31 FD, using Dunlop vintage tires (FF of course). Any help would be greatly appreciated.

Any guesses as to where to start with a 9/31 R&P for my RF-94 FF1600 for the ridge in Shelton, WA?

how about Pinto powered FC as well?

I was told Spokane gears for the Ridge in an FC.....only car to run there is Lensen. You could pm him

Brad try pm Ito trout Roberts abve I think ken Dye preps his car

Greg

Good luck guys

Thanks Greg. We'll be taking rains with us...bleck.

Let me know if you need anything

1st 18:32 or 18:33
2nd 21:30
3rd 23:28
4th 25:27

This worked okay for me but I'm not a front runner and my rpms could have been higher in a few places.
I thought about going a tooth shorter on a couple of gears to get a little better acceleration in one or two spots.
I'd suggest starting with the above and see how it works for you but be prepared to make a change if it isn't floating your boat...

Thanks Trout

Thanks Trout, see you over there.

LH

Can anyone supply a starting point to gear Buttonwillow 14 CW for a FF1600 10:31?

17/35
20/32
22/30
24/28

there are several variations one tooth up or down

running American Racers the cornering speed is lower and the gears are likely lower as

16/34
19/32
21/29
21/25

have fun

Looking for FF gear ratio recommendations for Auto Club Speedway/Fontana. The newest response I have found on this thread for "Fontana" is 8 years old, no results when searching on "Auto Club Speedway". The 8 year old results are:

20/30
22/29
21/24
25/25

Are those ratios still applicable?

I have an RG98K Van Diemen, Ford motor, LD200 gearbox, frankly can't remember what the final drive ratio is but most LD200 equipped FF's have been the same, its the other ratio from the common MK9 Club Ford ratio, been a while since I ran this car.

Thanks in advance.

Tom Duncan

A better way to describe the gearing for a particular track is to just post the maximum speed in each gear, assuming no tire growth with speed to keep it simple. Stating it that way includes all of the other effects, such as rev limit, tire diameter, and final drive ratio. With that information, any racer can do the math to select ratios for their car given their particulars.

Can anyone pass along the gearing for NJ Lightning coarse ? Honda with a 10:31. I'm thinking something close to Limerock ?

Thanks Lenny

I never thought I would have to ask this question: what gears for the road course at IMS? (Mk9 with 9:31).

Gingerman gears FF ??

Quote:

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Originally Posted by cgscgs

I never thought I would have to ask this question: what gears for the road course at IMS? (Mk9 with 9:31).

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Who is putting an event on at IMS??!