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Corvette Club autocross - Sat, Aug 9th |
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Patrick ![]() Newbie ![]() Joined: 19 April 2008 Location: Vancouver Status: Offline Points: 6 |
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Sorry, no entertaining narration this time. No spectacular spins. Just some fine driving. Watch video in 3D or 2D - Best time - BCCC autocross Aug 9, 2014
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Colby ![]() Admin Group ![]() ![]() Joined: 30 March 2009 Location: Abbotsford/Sask Status: Offline Points: 666 |
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You don't sound so impressed with your fine driving at the end of that video. ![]() |
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88 Formula 5 speed
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Patrick ![]() Newbie ![]() Joined: 19 April 2008 Location: Vancouver Status: Offline Points: 6 |
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I was just frustrated that I had come so close to my goal of breaking 50 seconds. I've got something special to post tonight. Stay tuned!
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Patrick ![]() Newbie ![]() Joined: 19 April 2008 Location: Vancouver Status: Offline Points: 6 |
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While I was in the starting grid waiting for my 4th run in the morning, Peter Dombrowski from the Corvette Club came up to me and asked if he could attach his GoPro camera to my Formula. I said "Sure" and he stuck it on the rear clip above the belt line. It's a very interesting angle. Within the frame you can see many things, including my ugly mug in the side-view mirror (sorry everyone I asked Peter to post the video. He kindly obliged. And one more thing... the audio is great! Listen to that angry beast. Peter's video of me - Interesting camera angle - BCCC autocross Aug 9, 2014 All those little "ticks" you hear are pebbles being tossed at the camera by the tires. Edited by Patrick |
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AllanJ ![]() Senior Member ![]() Joined: 28 July 2010 Status: Offline Points: 254 |
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karnak ![]() Senior Member ![]() ![]() Joined: 28 August 2009 Location: Canada Status: Offline Points: 349 |
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Nice angle Patrick!. Informative video Al!
Patrick, i found this old cell phone picture. i think this is the day it all began... it just just a friendly visit... ![]() ![]() |
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Patrick ![]() Newbie ![]() Joined: 19 April 2008 Location: Vancouver Status: Offline Points: 6 |
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Yep, almost exactly four years ago to the very day... as discussed HERE. That's Brian walking the other way... and Colby looking after Frankie while I was going for a spin with someone (maybe Gary) as a passenger. Frankie is now 13 years old and still going strong. Colby is now 23 years old and about to go to Saskatoon. I remember how much I wished I could've driven that day. It was extremely frustrating to just be a spectator. Great memories! Edited by Patrick |
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Patrick ![]() Newbie ![]() Joined: 19 April 2008 Location: Vancouver Status: Offline Points: 6 |
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Al, would you say that at the 28 second mark I had hit the brakes a split second too late, as it appears that I had already (just barely) started the left turn. I'm thinking that possibly the weight started to shift just enough to the passenger side of the car to "lighten" the driver's side tire a bit. Is that how you would interpret the puff of smoke from the front tire at that point? Or did I simply just hit the brakes too hard for an instant? (It's a very short puff of tire smoke.) Edited by Patrick |
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Colby ![]() Admin Group ![]() ![]() Joined: 30 March 2009 Location: Abbotsford/Sask Status: Offline Points: 666 |
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It's just a guess, but I think your rear brakes aren't working as well as they should. If your rear brakes were grabbing more, that would allow the rear tires to do some of the work the front tires are currently doing, and you'd end up stopping just as quickly without overloading the front tires like that.
Comparing to my car, and having driven them both, there's no way I'd lock my front tires like that in that situation. The only other difference I can think of is that those Kumhos just don't grip as well in that direction. |
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88 Formula 5 speed
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Patrick ![]() Newbie ![]() Joined: 19 April 2008 Location: Vancouver Status: Offline Points: 6 |
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I dunno about that. I only locked up a front tire once in the video (that I'm aware of)... and I really hammered on the brakes in the stop box with no issues.
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Colby ![]() Admin Group ![]() ![]() Joined: 30 March 2009 Location: Abbotsford/Sask Status: Offline Points: 666 |
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You're braking 100% in a straight line then. It's a little easier to control in that situation, because the front tires aren't already being utilized somewhat for cornering. But you'd know the state of your brakes better than me. I don't remember what you ended up doing with the brakes to get them roadworthy.
If it's a trait of the tire, you should be able to find someone next event with the same tires and see if they experience the same thing. |
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88 Formula 5 speed
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Patrick ![]() Newbie ![]() Joined: 19 April 2008 Location: Vancouver Status: Offline Points: 6 |
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Your dad and I flushed the system/bled them. That's it. Before next year's series of autocross events, I plan to at least remove the calipers and lube the sliders, and if necessary, replace the pads.
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AllanJ ![]() Senior Member ![]() Joined: 28 July 2010 Status: Offline Points: 254 |
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It's hard to say, Patrick. It could also have something to
do with the pavement conditions. There are several ruts as well so all it takes is losing a bit of that valuable small tire patch, either through weight transfer or pavement contours to reduce traction when the brakes are applied. Keep an eye on it for more clues. Maybe include a second camera so you can see if it's both front tires locking up or just one. |
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Patrick ![]() Newbie ![]() Joined: 19 April 2008 Location: Vancouver Status: Offline Points: 6 |
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I was amazed at the 57 second mark how much the tire/wheel dropped and then was immediately slammed upwards. That was a lot of travel, due strictly to the uneveness of the track surface. I'm really interested now in making some sort of a protective housing (or at least a face plate) for my Sony camera so as to mount it outside the car. And if necessary, I'll use a second device to record quality audio not being distorted by wind noise (and then combine the two sources during editing). I love that camera angle, although I'd like to fine tune it a bit and have the horizon a lot more level. Edited by Patrick |
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Patrick ![]() Newbie ![]() Joined: 19 April 2008 Location: Vancouver Status: Offline Points: 6 |
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There were finally some images posted at the BCCC site. This one is my favorite. You can see the two people with the PDM Racing car sizing up their stiffest competition... that rumbling red Fiero. Edited by Patrick |
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karnak ![]() Senior Member ![]() ![]() Joined: 28 August 2009 Location: Canada Status: Offline Points: 349 |
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ya.. they want to know why that guy doesn't have is lucky driving sneakers on.
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Patrick ![]() Newbie ![]() Joined: 19 April 2008 Location: Vancouver Status: Offline Points: 6 |
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Heh heh... I must remember to never again drive the course with my sandals on.
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karnak ![]() Senior Member ![]() ![]() Joined: 28 August 2009 Location: Canada Status: Offline Points: 349 |
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lol.. exactly...
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