What it looks like to pass at GT3 at 140mph...
08-04-2013, 06:33 PM
#1
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What it looks like to pass at GT3 at 140mph...
Just playing with some video from a new GoPro camera in my track car. Here is a short clip of a position pass and repass between me (G-class 951) and a K-class '05 GT3 during a PCA Club Race Sprint last wknd at Brainerd Int'l Raceway. Track is known for the long front straight and banked high speed Turn 1 and fast Turn 2 sweeper. Can take advantage of cars that overslow at the end of the straight, and catch and overtake them going into 2.
Note - 180mph speedo in the car. Little hard to see the speedo needle in the video, but the speeds are getting up there at the end of the straight, and thru Turn 1. The GT3 was probably pulling 155+ before slowing for turn-in. My data acquisition showed on average mid to upper 140s at the end of the straight.
Note - 180mph speedo in the car. Little hard to see the speedo needle in the video, but the speeds are getting up there at the end of the straight, and thru Turn 1. The GT3 was probably pulling 155+ before slowing for turn-in. My data acquisition showed on average mid to upper 140s at the end of the straight.
Last edited by Oddjob; 08-04-2013 at 08:55 PM.
08-04-2013, 07:24 PM
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Great video, weird i always envisioned you as a old fart behind an engineering desk not behind a wheel, good lesson for me.
08-05-2013, 01:56 AM
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08-05-2013, 09:32 AM
#6
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Great vid, Jim.
Track knowledge and brass clackers can overcome hp any day (well almost). ;-)
I dont' think I've ever seen a track w/ a long 5th gear corner like that. How far do you slide if you go off???
Track knowledge and brass clackers can overcome hp any day (well almost). ;-)
I dont' think I've ever seen a track w/ a long 5th gear corner like that. How far do you slide if you go off???
08-05-2013, 12:15 PM
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That’s my 9-5 job, on the occasional summer wknd I like to play race car driver!
Yeah, I don’t race/risk the original. This is a converted stock 87T running “cup” spec: 2920 lbs w/ driver, M030 front brakes, and allowed 1 bar(g) boost.
Possibly from personal experience, if you leave the track surface somewhat after the apex of Turn 1, you can slide about a ¼ mile down past the turn in point for Turn 2. Then there is a stand of birch trees which will slow you rather abruptly. Thats if the car stays on its wheels, if it gets on its roof it will not slide quite as far. The number of end over end flips also influences the distance traveled.
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08-22-2013, 03:19 AM
#8
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Oh hey now….
That’s my 9-5 job, on the occasional summer wknd I like to play race car driver!
Yeah, I don’t race/risk the original. This is a converted stock 87T running “cup” spec: 2920 lbs w/ driver, M030 front brakes, and allowed 1 bar(g) boost.
BIR often gets billed (arguably) as the fastest track in North America. Not sure there are too many road courses in the US that have a 1 mile front straight leading into a banked Turn 1 (other than something like Daytona) that many cars can take flat out. There are some old quotes attributed to Mark Donahue, Paul Newman, and others from the old CanAm and Trans Am series about Turn 1 at BIR (then called Donnybrooke) separating the girls and boys, and skirts blowing up over their eyes… Of course the 917/10 CanAm cars were pulling 200mph down the straight in ‘72!
Possibly from personal experience, if you leave the track surface somewhat after the apex of Turn 1, you can slide about a ¼ mile down past the turn in point for Turn 2. Then there is a stand of birch trees which will slow you rather abruptly. Thats if the car stays on its wheels, if it gets on its roof it will not slide quite as far. The number of end over end flips also influences the distance traveled.
That’s my 9-5 job, on the occasional summer wknd I like to play race car driver!
Yeah, I don’t race/risk the original. This is a converted stock 87T running “cup” spec: 2920 lbs w/ driver, M030 front brakes, and allowed 1 bar(g) boost.
BIR often gets billed (arguably) as the fastest track in North America. Not sure there are too many road courses in the US that have a 1 mile front straight leading into a banked Turn 1 (other than something like Daytona) that many cars can take flat out. There are some old quotes attributed to Mark Donahue, Paul Newman, and others from the old CanAm and Trans Am series about Turn 1 at BIR (then called Donnybrooke) separating the girls and boys, and skirts blowing up over their eyes… Of course the 917/10 CanAm cars were pulling 200mph down the straight in ‘72!
Possibly from personal experience, if you leave the track surface somewhat after the apex of Turn 1, you can slide about a ¼ mile down past the turn in point for Turn 2. Then there is a stand of birch trees which will slow you rather abruptly. Thats if the car stays on its wheels, if it gets on its roof it will not slide quite as far. The number of end over end flips also influences the distance traveled.
10-06-2018, 04:45 PM
#10
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Just found this!
Great driving Jim
Great driving Jim
10-07-2018, 01:13 PM
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10-09-2018, 09:15 PM
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10-09-2018, 09:27 PM
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i knew eventually i'd see a car like that blue 944T (Lart's son took me on that death ride in).....
on the track spitting fire. cool video.
on the track spitting fire. cool video.
10-24-2018, 07:02 PM
#14
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Great video! My brother and I used to race a Lotus 61 FF there in the early 90's.
You should have really smoked that fat 911 on turns 3 and 4!
Back then, BIR was also used as a drag strip. The entrance to the straight had a lot of rubber embedded into the tarmac.
Very slippery when wet!
-Yogii
AKA 968 Virgin
You should have really smoked that fat 911 on turns 3 and 4!
Back then, BIR was also used as a drag strip. The entrance to the straight had a lot of rubber embedded into the tarmac.
Very slippery when wet!
-Yogii
AKA 968 Virgin