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  1. #241
    Contributing Member Brad Smith's Avatar
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    Default

    Thanks Trout

  2. #242
    Classifieds Super License HayesCages's Avatar
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    Thanks Trout, see you over there.

    LH
    Lawrence Hayes
    Hayes Cages, LLC
    Sagle, ID.

  3. #243
    Contributing Member Brad Smith's Avatar
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    Default Buttonwillow 14 CW

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

  4. #244
    Senior Member Ed Erlandson's Avatar
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    Default gears at Buttonwillow 14

    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

  5. #245
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    Default 2014 Fontana gearing for FF?

    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

  6. #246
    Senior Member Neil_Roberts's Avatar
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    Default

    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.

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  8. #247
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    Default NJ Lightning

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

    Thanks Lenny

  9. #248
    Contributing Member cgscgs's Avatar
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    Default Indianapolis Motor Speedway - road course

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

  10. #249
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    Default Gingerman

    Gingerman gears FF ??

  11. #250
    Contributing Member mike g.'s Avatar
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    Quote Originally Posted by cgscgs View Post
    I never thought I would have to ask this question: what gears for the road course at IMS? (Mk9 with 9:31).
    Who is putting an event on at IMS??!
    ---------
    Mike Green
    Piper DF2 FF

  12. #251
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    Default

    SVRA.

  13. #252
    Senior Member GAC's Avatar
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    With a 10:31 and standard size rear tires, my Gingerman gears were 18:34, 20:31, 22:30, and 23:29.

  14. #253
    Contributing Member cgscgs's Avatar
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    Thanks for the bump Mike Green. Since its just down the street I decided to apply to run in the Indy SVRA event, and to my surprise was accepted (as a Club Ford).

    I hope someone will have a suggestion regarding gears, maybe someone who ran at Ontario many years ago and still has their notes. There is only one really slow turn (behind the museum), followed by a VERY long stretch at full throttle. Seems like most of today's rovals have a lot more than 9 degrees of banking so I'm not sure what track might be similar. Maybe Pocono?

  15. #254
    Senior Member GAC's Avatar
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    I would start out with Daytona gearing and go from there.

  16. #255
    Contributing Member cgscgs's Avatar
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    Default Gingerman

    Last year (my first time at G'man) I ran 20:32, 21:30, 23:28, 25:26 with a 9:31. I wrote in my notes that second was too low so this year I'll try 22:30.

  17. #256
    Contributing Member cgscgs's Avatar
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    Default IMS

    Not getting any replies to my inquiry about gears for IMS, I used Mid-Ohio ratios...mainly because that's my next race. Mostly I just wandered around the track, trying to find the line, and sometimes trying to find the turns! (mainly 1 and 7). 26:26 turned out to be fine for fourth, I hit 6500 rpm at the end of both straights which was enough for me.

  18. #257
    Contributing Member Tigaman's Avatar
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    I used Road America gears to put my old Tiga on the Sports 2000 pole at a high 1:37.

    Worked well for me...
    -Peter Krause
    1984 Tiga SC
    www.peterkrause.net
    "The Driver is the Greatest Performance Variable in the Racing Equation"


  19. #258
    Member NoLimits's Avatar
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    Default Barber Motorsports Park Gears

    I plan to attend the 45th anniversary event at Barber. I've never been there and have no idea what gears to run. I have a 1984 Swift DB1 Honda with a Hewland gearbox MK9 9.31. Any help is appreciated.

  20. #259
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    Default Gears I used at Pacific Raceways, June 13-14

    After doing my research and looking at my available inventory of gears, I equipped my Van Diemen RF89 (9:31 final drive) with

    Used (For next time)

    16:30 16:30

    20:27 19:27

    24:28 24:28

    25:24 24:24

    Overall, I think the gearing was close and if I'd been able to get a slightly higher entry onto the straight AND if I'd been using the tail bodywork (not yet modified for a new exhaust mount), I might have been able to make use of the overdrive top gear. As it was, I was getting 6500 RPM at the end of the main straight.

    And second gear should have definitely been 19:27, it was just too big a jump from 1st to 2nd for the 3 to 5 straight, and I'd have gotten better acceleration from turn 5 to turn 7 as well.

  21. #260
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    Default Waterford Gear Ratios

    Would appreciate recommendations for Waterford gearing. Have searched but can't find anything.

    Crossle 35f
    10:31 R&P
    Dunlop FF Tires

    I have the ratios from Lamonts book but am wondering what you veterans like to run there.

    Thanks!

    Mike

  22. #261
    Global Moderator -pru-'s Avatar
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    Default DB1 on Hoosier's

    From my notes :

    Swift DB1 w 10:31 and 22.5 rear tire diameter (speed at 6800 rpm)

    1st : 17/34 (73)
    2nd : 19/33 (85)
    3rd : 20/31 (95)
    4th : 21/29 (106)

    Take care,
    Chris Pruett
    Swift DB1

  23. #262
    Senior Member kea's Avatar
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    Default Waterford gear ratios

    Keith
    Averill Racing Stuff, Inc.
    www.racing-stuff.com
    248-585-9139

  24. #263
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    Default waterford gears

    I have a 9:31 R&P

    does anyone have those gears?

  25. #264
    Senior Member kea's Avatar
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    Default

    18/32
    20/31
    21/29
    23/28
    Keith
    Averill Racing Stuff, Inc.
    www.racing-stuff.com
    248-585-9139

  26. #265
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    Default Gears for Barber Motorsports Park

    Anyone got starting gear set for Barber? Never been there.
    Thanks Mike Sauce

  27. #266
    Contributing Member Earley Motorsports's Avatar
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    Default

    I have heard similar to Laguna Seca if that is any help.
    Graham

  28. #267
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    Default Gears for Barber

    Thanks But I have never been to Laguna so I still need info.

  29. #268
    Senior Member Raceworks's Avatar
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    Default

    Quote Originally Posted by M.Sauce View Post
    Thanks But I have never been to Laguna so I still need info.
    I haven't run an FF there yet, and if I did I don't know how relevant the Honda gearing is (I tend to like to keep them well off the rev limiter on the straights).

    If you can track down any gearing for Carolina Motorsorts Park it should be pretty close, although Barber has more fast turns than CMP and fewer "creepers".

    In the Mazdas take the hairpin at 40-45 mph (slowest point on the track), and I don't think we saw a top speed above 128 with the wing angles we run there.
    Sam Lockwood
    Raceworks, Inc
    www.lockraceworks.com

  30. #269
    Contributing Member Bernard Bradpiece's Avatar
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    Default Barber gears

    Quote Originally Posted by M.Sauce View Post
    Thanks But I have never been to Laguna so I still need info.
    Mike
    Don't know if this is a help. I've been once in 2010 with Merlyn 11a. Was the one of the quickest VFF on the North East Coast back then. Could not get the gears right at the time but I noted that if I went again to go a bit lower and try:-
    9:31
    23" diameter tires (Dunlops)
    18:33
    20:31
    22:29
    21:25
    Not a lot of straightway - front straight is the fastest, the back section is fast but up and down and several fast 3rd gear sweeping corners. 4 or 5 critical slow corners that need a good exit and good acceleration out for a decent lap time. If you are in a modern car you might want to start a tooth higher for the extra cornering speed.
    Let us know how you fare.
    Best
    BB2

  31. #270
    Contributing Member Jnovak's Avatar
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    What is the top speed of a good FF at Laguna?
    Thanks ... Jay Novak
    313-445-4047
    On my 54th year as an SCCA member
    with a special thanks to every SCCA worker (NONE OF US WOULD RACE WITHOUT THE WORKERS)

  32. #271
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    With a 13/36 I'm going to start with these ratios.
    1st 16/34
    2nd 17/30
    3rd 20/30
    4th 22/29
    Ed Midgley

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    ser

  34. #272
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    Also I'm running a Honda. 6750rpm redline.
    Ed

  35. #273
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    Default Gears for Barber

    Guys- Thanks I think I have a ball park to start with.

    16/35
    18/32
    20/30
    22/28

  36. #274
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    Mike, do you also have a 13:36 final drive, or do you have something taller yet?

  37. #275
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    Default barber mtsps

    10/31 ring and pinion

  38. #276
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    Quote Originally Posted by M.Sauce View Post
    10/31 ring and pinion
    Then you need to use taller ratios that were recommended for a 13/36, not shorter.

    Take the ratios given by Ed Midgley and divide larger by smaller (34/16 = 2.125)

    Multiply by 36/13 (2.125 * 36/13 = 5.885)

    Then multiply by 10/31 (5.885 * 10/31 = 1.898).

    Then figure out which gear set most closely matches that number. In my collection, that would be an 18/34 first.

    If you use a different red line, than the Honda that Ed has, then multiply by your redline and divide by his to get the change in ratio. (1.898 * 7000/6750 = 1.969) Assuming you're shifting at redline of course.

  39. #277
    Senior Member Scotty Segers's Avatar
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    Default Laguna gears

    Would anyone like to share Laguna Seca gears for a Honda powered Van Diemen with a 10/31 R&P

    Thanks
    Scotty Segers

  40. #278
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    I just got back from Laguna. I have a 13/36 ratio so I won't confuse you with actual ratios. Gear for 75mph in first and 121mph for fourth. I was geared for 70mph in first and it was too low. I have a Honda engine also.
    Ed Midgley
    PS The track has no grip in the afternoon when the sun is on it. It's a little better in the morning with clouds.

  41. #279
    Senior Member Scotty Segers's Avatar
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    Thanks Ed

    Scotty Segers

  42. #280
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    Default Need Help Buying Gear Sets

    What gears are you guys using at:

    LimeRock
    Watkins-Glenn
    Njmp (lighting)
    Njmp (thunder)
    Summit Point
    VIR
    thompson


    Does anyone have any used sets i can buy, that are in decent shape.

    I have Citation with a kent 1600 with hoosier r45's

    Thanks guys

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