Race Report VIR 12-13 May 2018

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fp55scca
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Race Report VIR 12-13 May 2018

Post by fp55scca » Thu May 17, 2018 9:14 am

--Mother's Day weekend, double-race SARRC/MARRS series at Virginia International Raceway

--The double South Atlantic Roar Racing Championship (SARRC) and Mid-Atlantic Road Racing Series (MARRS) is a large annual event combining two east-coast road racing series. This year's event attracted over 250 entrants in 7 race Groups.

--Race Group 6 (25 cars): EP FP HP GTL GTP SPU STL STU T4 LC and B-Spec. A lot of cats and dogs in this race group made for some interesting and challenging racing due to speed and class differentials. I had to tangle with some slower EP cars, an SPU car, and particularly some Legends cars. These cars were fast in the straights, but slow in the corners. Weekend weather was hot (temps registering over 100 degrees in the paddock alone) but otherwise clear. Due to a variety of life's distractions, this was my first race of the season, having missed the first 3 races, including two Majors. This was a regional race, and included only 4 cars from the SARRC series in the FP class.

--My primary competition for the weekend was a fast Acura Integra driven by Les Chaney who qualified 1st in class (5/25 in the group), and Bill Foster's MG Midget at 3rd in class (11/25 in group). Bill is a South-East Region instructor at VIR, and extremely consistent. I qualified 2nd in the FP class and 9/25 in the group. The 4th FP car, a Datsun 1600, was not particularly competitive.

--Saturday's race got tangled in traffic, passed by Foster, and the race ended with the last 3 laps under double yellow due to significant carnage, so I finished 3rd in class and 11th in Group.

--In Sunday's race, I got a clean start, and pushed hard to stay ahead of Foster's MG Midget and the pesky EP, SPU and two Legends cars that hounded me all weekend. About lap 5, Les Chaney spun his Acura in turn 1, and I caught him as he re-gained the track. At first, he began to pull away, but eventually I noticed I was catching him. I caught him on the front straight and he waived me by. I only had to hold my place for the win in FP, and 3rd overall in the Group.

--Hopefully, I'll have some video to follow.
VIR 5-18.jpg
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Jim Scurria
Norfolk, VA

1972 Fiat 124 Spider
1971 Spider - SCCA FP-24
1974 Fiat 124 Spider
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Re: Race Report VIR 12-13 May 2018

Post by engineerted » Thu May 17, 2018 12:31 pm

WOW !! Good job!! Good to see the you back on the track. Hows that Diff holding up. I should be back on track most likely June or latest July. itching to try out some new settings, heaver springs front and rear (700/300)(made adjustable rear spring perches), new rear shocks and dialed in some big caster numbers 6.75degrees. The 2L is heavy and was hitting the bump stops on certain corners.
1978 124 steet car
1974 124 EProd race car
Farmington Hills, MI
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Re: Race Report VIR 12-13 May 2018

Post by fp55scca » Thu May 17, 2018 5:06 pm

engineerted wrote:
Thu May 17, 2018 12:31 pm
Hows that Diff holding up...... new rear shocks and dialed in some big caster numbers 6.75degrees.
-----------------------------------------------------

--Ted, the diff is holding up very well, and making all the difference in the world. At present, I only have one made up with a 3.9., but I'd like to do one for short tracks with a 4.1 as well. Still don't have the Colotti gearbox back in the car which will improve gear ratios quite a bit.

--Those caster numbers are wild! Seems like that would make handling a little twitchy? What am I missing?
Jim Scurria
Norfolk, VA

1972 Fiat 124 Spider
1971 Spider - SCCA FP-24
1974 Fiat 124 Spider
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Re: Race Report VIR 12-13 May 2018

Post by engineerted » Thu May 17, 2018 9:35 pm

The 124 front suspension has a 6 degree king pin angle(KPA) this is the angle of a line drawn through the top ball joint to the lower ball joint as viewed from the front of the car. When you turn the wheel in, the KPA will actually reduce camber. Positive caster will gain camber when turning the wheel in. Thus if the KPA and positive caster angle are the same you will have zero camber gain/loss. If the caster is greater than the KPA you will actually gain neg camber when turning.

My goal is to improve turn in, mid corner power on steering and corner out power on steering. The car was pushing (under steering) mid corner and at corner exit when adding power.
1978 124 steet car
1974 124 EProd race car
Farmington Hills, MI
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Re: Race Report VIR 12-13 May 2018

Post by fp55scca » Fri May 18, 2018 10:21 am

--Oh I see what you're saying Ted: KPA = inclination angle, which is 6 degrees.

--I'll be curious to see how your handling responds to the increased spring rates. I'm still running 650/250, but the conversion to the tri-link rear suspension, combined with the Torsen diff, has really made all the difference in the world.
Jim Scurria
Norfolk, VA

1972 Fiat 124 Spider
1971 Spider - SCCA FP-24
1974 Fiat 124 Spider
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Re: Race Report VIR 12-13 May 2018

Post by lanciahf » Fri May 18, 2018 12:40 pm

Congratulations Jim, thanks for flying the flag.
Ralph DeLauretis
2013 Fiat 500 POP
1984 Pininfarina Spider
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friedman
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Re: Race Report VIR 12-13 May 2018

Post by friedman » Fri May 18, 2018 2:59 pm

Well done. I find it odd that they group so many cars of disparate abilities in a single race but I suppose that's the only way they can get everyone in on one day.
Carl in Virginia
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Re: Race Report VIR 12-13 May 2018

Post by SimcaBertone66 » Sun May 20, 2018 8:47 am

Way to go "old man" very proud of what you are doing there ! Not easy at all.
Joe DeGasperis
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