Discussion in 'Autocross/Road Racing' started by Bud, Jun 27, 2008.
another great read rick!!
thats a pretty good site you found rick
I've got a guy at work that has an in car camera mount. I'd like to get it or my own and do some videos! Just for the fun of it. It sure would suck to video my own death! LOL
To me...this is the main thing I have seen in most people I have ridden with. I think a lot of people learned early on that you "never" brake while turning and accelerate in the turn. Which to some degree is correct. However, you should scrub speed in a straight line, but instead of just quickly lifting off the brakes and causing the front end to come up and loosing the forward turn it bite, you should slowly come off the brakes during initial turn in which will cause all four tires to have a more equal contact patch going though the corner, and then rolling over to the throttle and taking you out of the turn.
Bah, my momma taught me to lift going into the turn and accelerate coming out of the turn. Also, I had lots of practice driving my control freak mom and my itty bitty great-grandmother around in a FWD 4-banger. You learn how to drive smooth but fast pretty quick that way. Smooth so they don't bitch and fast so you can get the trip over with as fast as possible.
Every roadcourse racer/instructor I've dealt with has affirmed what you said Bud, SMOOTH driving is faster driving. :happy:
Thanks ChargerGirl. LOL
Sorry, Rick. :bigwink:
Where did I see those posts and links to camera mounts? not too long ago. There was a heavy duty one with 4 giant suction cups and then a short articulated arm. Plenty for the weight of a professional video cam (rated for sticking on the outside of the car as well). Somebody was using it in car with it stuck to the sun roof.
Has your brain growth caused your head to swell to the size of Jason's yet!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! By the way what do you run your tires at 39 or 40!
I've been running them at 38 this week to see how they feel. So far, "I" think I like them at around 36-38.
Go Pro cameras are ones I have seen used ..
price is pretty decent as well..
My wifes my pit crew we pack all above and
some extra items depending on weather
*lots of water
I'm glad I just run stock
1.Fold out chair
2.Cooler with individual ziplocked bags of ice (impossible to fit a whole bag under the bar on the jeep)
3.A Towel to wrap around the bottom of the intake to catch dripping water from bags
4.Tire pressure guage
Wade....do you actually road race/auto-x the jeep? LOL
Hell yeah, everyday when I leave the house it's on like Donkey Kong!! First to the light each and every time-LOL. No just at theh 1/4 and 1/8 track was what I was referring too
Nice post Rick, very helpful! :thumb2:
I think all of this is very interesting but I question how practical it really is.
I just finished watching a NASCAR race on TV with the in car camera and all. When the tires lost traction as in when the car was spinning you could hear the tires squeel, yet when the cars were sideways but still in control, the tires were not making any noise. Race tires are set up, I believe, to an ideal slip angle. Beyond that angle, they squeel just like the funky street tires we drive. I think we all know the less expensive (cheap) tires have virtually no slip angle designed in and will squeel with minimal effort. The more expensive tires, the V, W et al, require much more effort, more slip angle, to exceed their design tolerances.
I think this is why some tires are much slower than others on the same car, same driver, because they are engineered with different slip angles among other things.
Now I am not an engineer but I have some experience with race tires and testing of same and this is how it was explained to me at these tests.
Well, this is all rather confusing. In the original post they used the header "Slip Angle" and then proceeded to talk about slippage which has nothing to do with slip angle. Slip angle refers to the flex or twisting of the tire when the wheel is pointing in a slightly different direction than the tire tread is pointing. They talk about slippage when braking and accelerating and then mix it up when talking about cornering.
Umm, it's just wrong to start the sentence with the word slippage and end the sentence with slip angle.
Now it's harder to tell what they're talking about.
Now they're on a roll and really mixing it up.
Maybe they are talking about slip angle and they're just saying if you're not cornering hard enough to generate a slip angle of 5 to 6 degrees you're not approaching the traction limits of the tire. But I think it's a bit wrong to say the max traction of the tire is achieved at some level of slippage. You see what I'm saying?
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