|
Reminds me of when I got my first car. My friend came over and said, "drat, these hubcaps are really convincing" before trying to pull my alloys off.
|
#
?
Apr 14, 2014 21:44
|
|
|
|
| # ? Apr 16, 2024 08:25 |
|
|
stump posted:drat, I was convinced they were alloys but you may be right. Some wheel trims are pretty convincing now. Don't feel too bad, I did the exact same thing in this very thread sometime last fall. That said, if that car is just a year old, it'll probably end up in here before too long being driven into curbs like that. They did it hard enough to take two bites out of the tire.
|
|
#
?
Apr 14, 2014 21:56
|
|
|
 
|
|
#
?
Apr 14, 2014 22:11
|
|
|
I like how he shifts his head to the left as if to dodge the tire. I probably would have panic braked and plowed into the wall myself.
|
|
#
?
Apr 14, 2014 22:14
|
|
|
Reminds me of my car accident:  90 KM/h tire from opposing traffic while going over a bridge. Yee haw.
|
|
#
?
Apr 14, 2014 22:40
|
|
|
All I see is a bunch of people not killed from taking a 40-odd-pound projectile to the face, so mechanical successes all around!
|
|
#
?
Apr 14, 2014 22:43
|
|
|
Well, yes. But keep in mind for that to happen, a wheel had to separated somehow from another vehicle which is a pretty big failure in my book. 
|
|
#
?
Apr 14, 2014 22:45
|
|
|
 He must've been picking cotton out of his rectum for weeks.
|
|
#
?
Apr 14, 2014 22:54
|
|
|
Somebody tell me why F1 (and Indy cars for that matter) still run open cockpits. Wouldn't an enclosed cockpit be safer? Is it just tradition and so they just deal with it being less safe, or is an open cockpit actually safer somehow?
|
|
#
?
Apr 14, 2014 23:42
|
|
|
Tradition is a lot of it, but safety isn't a "one is better than the other" for all situations. Open-cockpit cars definitely have more risk of injury to impact, but you're trading that with a car that's harder to escape in case of fire / harder to extract an unconscious driver from, plus reduced visibility.
|
|
#
?
Apr 14, 2014 23:50
|
|
|
Craptacular posted:Somebody tell me why F1 (and Indy cars for that matter) still run open cockpits. Wouldn't an enclosed cockpit be safer? Is it just tradition and so they just deal with it being less safe, or is an open cockpit actually safer somehow? An enclosed cockpit won't save you if you're hit by a full wheel @ 300+kph. Nothing will save you. However, an open cockpit is easier to get out of in a fire, and making an enclosed cockpit that is as easy to escape from would probably be very heavy. I suspect it ultimately comes down to the lightest solution that meets the safety requirements of minimum evacuation time.
|
|
#
?
Apr 15, 2014 00:15
|
|
|
Captain Postal posted:However, an open cockpit is easier to get out of in a fire, Don't forget the part about how an open cockpit is totally badass.
|
|
#
?
Apr 15, 2014 00:37
|
|
|
I'm not sure these days an open cockpit is easier to get out of.. have you seen drivers climb into a modern F1 car? It's like giving birth in reverse.
|
|
#
?
Apr 15, 2014 01:30
|
|
|
Rev. Dr. Moses P. Lester posted:That makes sense but why not just use a slipper skirt like high performance gas engines do? The forces involved in diesels are waaaaay higher than in gas engines- I suspect a slipper skirt would probably crack itself off the rest of the piston before too long. You have to remember your talking 18-24:1 Compression ratios here and big explosions- Theres a reason diesels are louder than petrols and thats from the force of combustion.
|
|
#
?
Apr 15, 2014 02:03
|
|
|
xzzy posted:I'm not sure these days an open cockpit is easier to get out of.. have you seen drivers climb into a modern F1 car? It's like giving birth in reverse. I swear I heard it somewhere that there was a requirement on ease of removing the steering wheel and exiting (with help?) in the event of a fire. But yeah, sitting with legs raised to chest height, hand holds above shoulder height and bum down low at the bottom of the car can't be easy to get out of without help.  
Captain Postal fucked around with this message at 02:18 on Apr 15, 2014 |
|
#
?
Apr 15, 2014 02:11
|
|
|
Captain Postal posted:I swear I heard it somewhere that there was a requirement on ease of removing the steering wheel and exiting (with help?) in the event of a fire. From the F1 regulations: quote:13.1.4 From his normal seating position, with all seat belts fastened and whilst wearing his usual driving equipment, the driver must be able to remove the steering wheel and get out of the car within 5 seconds and then replace the steering wheel in a total of 10 seconds.
|
|
#
?
Apr 15, 2014 02:38
|
|
|
Why replace the steering wheel? Car's on fire, it's not like the steering wheel is a necessity at that point.
|
|
#
?
Apr 15, 2014 02:51
|
|
|
Sounds like it's to ensure that he can get out without having to disassemble the car.
|
|
#
?
Apr 15, 2014 03:00
|
|
|
From a driver safety point of view, it wouldn't matter what damage you did to the car getting out. I'm guessing but it might be in the event of a breakdown; the driver gets out and over the barriers and the marshals need to move the car out of the way, so having a steering wheel easily re-attached might help?
|
|
#
?
Apr 15, 2014 03:06
|
|
|
2003 Mazda Protege, terrible creaking from the front end on turns. Sounded like bad upper strut mounts...   The only downside is the spring perch (destroyed swiss cheese of rust) is a separate piece from the strut mount (top pieces in pic 3), for whatever stupid reason. I had to wait an extra day for Napa to get me the 2 new upper perches. So I billed the customer for the 2 upper mounts ($48 each) that were probably not 100% necessary, but were probably good to replace regardless.
|
|
#
?
Apr 15, 2014 03:45
|
|
|
Captain Postal posted:I swear I heard it somewhere that there was a requirement on ease of removing the steering wheel and exiting (with help?) in the event of a fire. The fire risk, while real, is a bit overstated in Formula 1 these days. Now NHRA Top Fuel, on the other hand, you're pretty much guaranteed to end up as a fireball hurtling down the track at some point, yet there seems to be a very major push towards closed cockpits in those cars.
|
|
#
?
Apr 15, 2014 03:57
|
|
|
I think both of these things are because Formula 1 cars aren't assembled around wildly modified big block chevys and welded together by a guy named "Stretch" with seven fingers. I know very little about NHRA dragsters
|
|
#
?
Apr 15, 2014 06:15
|
|
|
Safety Dance posted:I think both of these things are because Formula 1 cars aren't assembled around wildly modified big block chevys and welded together by a guy named "Stretch" with seven fingers. You are entirely accurate, but you omitted how much money it takes.
|
|
#
?
Apr 15, 2014 06:22
|
|
|
Side visibility isn't exactly a tremendous priority for top fuel drags either.
|
|
#
?
Apr 15, 2014 06:27
|
|
|
Geirskogul posted:You are entirely accurate, but you omitted how much money it takes. Hey, Stretch gotta have his meth. e. Also, I guess the mean time between failures on those motors is something like 1/8 mile. Safety Dance fucked around with this message at 06:45 on Apr 15, 2014 |
|
#
?
Apr 15, 2014 06:42
|
|
|
I have one thing to add: top fuel motors are hemi based.
|
|
#
?
Apr 15, 2014 09:16
|
|
|
MrChips posted:The fire risk, while real, is a bit overstated in Formula 1 these days. To add a bit on this: Pretty much every time there is an engine fire these days the on board extinguisher will eliminate any danger to the driver.
|
|
#
?
Apr 15, 2014 16:12
|
|
|
Safety Dance posted:Hey, Stretch gotta have his meth. That's kinda why I love Top Fuel as much as I do. They push so much power through those motors that they know they'll explode pretty much every other run, but they just say "gently caress it, we'll just rebuild it every time." That and burning nitromethane is delicious.
|
|
#
?
Apr 15, 2014 22:06
|
|
|
Continuing Top Fuel drag chat: This is old but worth a repost a still impressive http://www.motortrend.com/features/112_0502_top_fuel_numbers/
|
|
#
?
Apr 15, 2014 22:15
|
|
|
Previa_fun posted:Continuing Top Fuel drag chat: My favorite part of that, quote:12,000
|
|
#
?
Apr 15, 2014 22:23
|
|
|
That is insane. I don't know how it is in the states but in NZ top fuel engines are stripped and rebuilt after every run, it apparently takes about 90 minutes. The 'junior' naturally aspirated cars that only  have about 4000hp can idle indefinitely because of the cooling the fuel alone offers, despite having no cooling system.
|
|
#
?
Apr 15, 2014 22:37
|
|
|
DiggityDoink posted:That and burning nitromethane is delicious. with nitromethane you can take lean burn to its logical conclusion and burn it with no oxygen at all, leaving hydrogen as a combustion byproduct. this produces bright white flames from the exhaust headers. it's the best fuel. atomicthumbs fucked around with this message at 23:06 on Apr 15, 2014 |
|
#
?
Apr 15, 2014 23:01
|
|
|
Do they pull and rebuild the same engine between each run, or do they have a spare engine they swap into the car while rebuilding the one that recently ran?
|
|
#
?
Apr 15, 2014 23:05
|
|
|
They rebuild the engine on-car in 90 minutes. Both heads off simultaneously, then one poor bastard lays underneath and has the pistons + rods fall into his 'hands'. The pistons are looked at to see how the engine is running; they don't get re-used, you just put new pistons and rings in. Not so sure about the valvetrain side of things. The gaskets get covered in copper spray. They're an extremely simple engine; having no cooling system and no accessories besides the fuel pump and magnetos makes things a lot easier and quicker, and unlike factory engines they're intended to be taken apart quickly.
|
|
#
?
Apr 15, 2014 23:27
|
|
|
Slavvy posted:They rebuild the engine on-car in 90 minutes. Both heads off simultaneously, then one poor bastard lays underneath and has the pistons + rods fall into his 'hands'. The pistons are looked at to see how the engine is running; they don't get re-used, you just put new pistons and rings in. Not so sure about the valvetrain side of things. The gaskets get covered in copper spray. And if you're in the right place at the right time, and someone is feeling generous, you can even end up with engine bits as a souvenir.
|
|
#
?
Apr 16, 2014 00:34
|
|
|
That's why I have an I-beam rod bigger than my hand 
|
|
#
?
Apr 16, 2014 00:40
|
|
|
Slavvy posted:They rebuild the engine on-car in 90 minutes. Both heads off simultaneously, then one poor bastard lays underneath and has the pistons + rods fall into his 'hands'. The pistons are looked at to see how the engine is running; they don't get re-used, you just put new pistons and rings in. Not so sure about the valvetrain side of things. The gaskets get covered in copper spray. And the fuel system is literally just a pump, no injectors. It just spews fuel into the intake all the time.
|
|
#
?
Apr 16, 2014 00:51
|
|
|
It should be mentioned that although the motors are "based on" the Hemi, there's probably not a single part you could use on a factory engine. Also, the supercharger takes more power to run than the stock Hemi makes.
|
|
#
?
Apr 16, 2014 00:57
|
|
|
More of a chemical failure maybe. One of our big multi-cabinet UPS systems started throwing alerts, someone went into the UPS room and smelled sulfur for some reason! I don't have a pic of this in the cabinet, but I do have these. 
|
|
#
?
Apr 16, 2014 03:10
|
|
|
|
| # ? Apr 16, 2024 08:25 |
|
|
That.. that could have ended incredibly badly. 
|
|
#
?
Apr 16, 2014 03:26
|
|
