Are you talking auto or manual?Originally Posted by spi-ti-tout
And the fire wall isn't a part of the transmission.
Are you talking auto or manual?Originally Posted by spi-ti-tout
And the fire wall isn't a part of the transmission.
"We went to Wnedy's. I had chicken nuggest." ~ Quiggs
F1 engines can go 19000 rpm cuz they have a really short stroke, the piston speeds in an f1 engine arnt much higher then a "regular" performance engine say s2000 or audi's v10 in the rs4Originally Posted by Coventrysucks
generally a higher redline means more power and thus top speed
and i didnt understand anything you said after that
when you shift up, you're going into a longer ratio, think about itOriginally Posted by spi-ti-tout
if your first gear is 1:1, then at 1000rpm engine speed your wheels are going 1000rpm, now lets say ur 2nd gear is 0.5:1, your engine rpm must be 500rpm for the wheels to go at 1000rpm
The revs drop because (unless you're flatshifting) you take your foot off the throttle and as the engine is disconnected from the drivetrain, there's nothing to keep the engine spinning so it loses momentum and hey presto, the revs drop
Faster, faster, faster, until the thrill of speed overcomes the fear of death...
– Hunter Thompson
Hmn, I'm a bit confused as I don't think this is what I was actually asking. Does this have anything to do with the temporary decrease of revs (down and back up again) when you shift gear (in a manual - thanks johnny)Originally Posted by KnifeEdge_2K1
As 2ndcc said, when changing gears in a manual your foot comes off of the accelerator. (Unless you are powershifting)Originally Posted by spi-ti-tout
I think you misunderstood. Say you're cruising at 100 mph at 2500 rpm, when you shift the needle sticks down all the way to 0 revs and then just as you finish shifting, it goes back to about 2450 rpm and starts counting. I doubt acceleration would climb that quickly back up again, unless the power was suspended and readily available again as soon as the clutch and gear made contact, or something to that extent. Or I just may be a n00b.Originally Posted by Rockefella
You let off the gas(rpms drop), push the clutch(rpms now drop faster), change the gear, let out the clutch(the clutch grabs), and get on the gas again(rpms climb). I think I typed that right.
"We went to Wnedy's. I had chicken nuggest." ~ Quiggs
4) Turning Circles
I can't really explain it properly but in my mind these cars will have the bigger turning cicles in order:
AWD/4WD
RWD
FWD
Because in FWD the power and steering is one, therefore when you try to steer both are applied at the same time. With RWD, you have the steering the power at opposite ends, so basically you require space to put out the power. In AWD, the power is divided by even more space.
Meh, I'm not thinking.
Actually RWD have smaller turning circles because the front wheels doesn't have to transmit power (can't remeber of the name of the parts that transmits the power to the wheels), and as result can have more degrees of steering lock.Originally Posted by spi-ti-tout
Lack of charisma can be fatal.
Visca Catalunya!
I was also thinking of understeer when I wrote that. If you went round a corner too fast you'd have understeer which would help because the car locks and then you can continue, so it'd be a smaller line than a RWD coming in fast as a RWD has oversteer.Originally Posted by Ferrer
Well actually oversteer tends to tighten the line, while understeer opens it, as demonstarted by those rather basic drawings:
Understeer
Oversteer
Lack of charisma can be fatal.
Visca Catalunya!
Just one thing I thought I
d point out about engine speed. F1's operate at the highest rpm for cars, as Knifedge said their piston's stroke is very short. NASCAR engines, on the other hand, rev to ~10,000 rpm, and have very long strokes. Their engines piston speed are incredibly high, about twice what the accepted safe range is.
Turning radius should not be affected by drive type, since under/oversteer only occur when traction is at the limit, and the turning radius is a a low speed. Turning radius is dependant only on the geometry of the 4 wheels on the ground and the maximum turning degrees of the front wheels. But like ferrer said it may be that due to mechanical considerations rwds generally have a greater range of steering motion, and therefore a smaller turn radius.
To clear that up, the turning circle should be the same whether the car is fwd, rwd, awd, or just pushed by someone, because at low speeds the front and rear wheels turn in unison anyway and are not close to the limits of traction.
The question came to me because of how Clarkson was moaning about the turning circle of the MRFQ400. IIRC NOBODY have ever mentioned a horrible turning radius of any EVO, atleast none that I have spoken to or read from, but that turning circle was really horrible and it was based on the stock MR, which is also AWD and shares all the same technology. I was just thinking "why?", if this has been so bad why hasn't anybody ever mentioned it ebfore.Originally Posted by Bob
There are currently 1 users browsing this thread. (0 members and 1 guests)