3.09 ring & pinion
11-14-2005, 06:29 PM
#286
Rennlist Member
weather up here is great and should be even better in a few days! (summer still in the west!! too bad, no money or events to race it!)
anyway, nice to come clean. thanks. yes, ive had my share of botched up formulas and typos. Im no einstein, but i do have a handle on this stuff. in earlier discussions, my problem was just getting the concepts across. as long as we correct and are corrected, thats all that matters to me. TRUTH!!!
how is the weather up there??
Mk
anyway, nice to come clean. thanks. yes, ive had my share of botched up formulas and typos. Im no einstein, but i do have a handle on this stuff. in earlier discussions, my problem was just getting the concepts across. as long as we correct and are corrected, thats all that matters to me. TRUTH!!!
how is the weather up there??
Mk
Originally Posted by heinrich
Yes that was a load of crap. You are correct the bullet stops accelerating as it leaves the force that accelerates it, and the car stops accelerating when it stops getting the push from the engine. However that stupid post does not change the point Mark that bottom line, a shorter rear end will provide greater acceleration and that gain is impossible to overcome from that point on. As I said I'm tired of arguing physics with you. Because you have already conceded that point. So any further arguing (I remember mark you have made similar incooorect statements in the past which you later corrected) serves only as mental masturbation.
So, how's the weather there?
So, how's the weather there?
11-14-2005, 07:54 PM
#288
Weather is super out in eastern NY today. I may be picking up my 72 fiat From a Lotus guy who is setting up the twin webers. Sub 2000 pounds and an 8000 RPM Italian chain saw engine. This car was set up for autocross years ago, and has languished due to points bounce at high RPM. Strangely enough, I happened to have a rebuilt distributor in the trunk to aid in carb setup. Very elemental.
This has been an interesting thread. Having reread and distilled it down in my mind it seems pretty clear.
This has been an interesting thread. Having reread and distilled it down in my mind it seems pretty clear.
11-14-2005, 08:42 PM
#289
Captain Obvious
Super User
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Originally Posted by Randy V
The SC definitely helps you get to The Beer Store in time before it closes, eh Imo!
This way I can get back home quickly to sit on my "chesterfield" and enjoy a serving of "peamel" bacon!
11-15-2005, 12:38 PM
#293
Originally Posted by mark kibort
i think what you really would need with a 4.09 or 4.45 rear end, would be traction control!!
by the way, are we cleared up on the "stored energy" claim you made.
Really would like to hear what you were thinking on that one. I asking as there is always a chance i missed something or misunderstood something with that post. or, do you wish to recant it?
again, even though you are reaching the redline of a 3.09 at a faster rate of acceleration, there would be no differnce after 39 mph at a shift, where acceleration is stopped completely for a fraction of a second. even with a speed shift, you cant regain the lost energy. (only minimize the effects).
Mk
by the way, are we cleared up on the "stored energy" claim you made.
Really would like to hear what you were thinking on that one. I asking as there is always a chance i missed something or misunderstood something with that post. or, do you wish to recant it?
again, even though you are reaching the redline of a 3.09 at a faster rate of acceleration, there would be no differnce after 39 mph at a shift, where acceleration is stopped completely for a fraction of a second. even with a speed shift, you cant regain the lost energy. (only minimize the effects).
Mk
A gear is potential energy.
If you top out at 150 in top gear, but i've got another gear to use at 150, i've more potential energy than you do. I'm SURE i'm using the incorrect terminology, but the untapped energy is still there just the same.
11-15-2005, 02:17 PM
#294
[QUOTE=mark kibort]
1. Putting a 3.09 ring and pinion vs a stock 2.2, doesn’t make the gears closer together"
Wrong, oh so very, very wrong.
For the racing we'd be doing, the 3.09 car would effectively be a 4 speed, the 2.2 a 3 speed.
Yet somehow, 4 gears aren't more closely spaced than three?
LOL.......WOW.
1. Putting a 3.09 ring and pinion vs a stock 2.2, doesn’t make the gears closer together"
Wrong, oh so very, very wrong.
For the racing we'd be doing, the 3.09 car would effectively be a 4 speed, the 2.2 a 3 speed.
Yet somehow, 4 gears aren't more closely spaced than three?
LOL.......WOW.
11-15-2005, 02:24 PM
#295
[QUOTE=mark kibort]hammer, do you really think a .1 of a second is going to put someone in your rear view mirror."
Why yes, yes it will.
.1 sec in drag racing is an eternity, and for a 14 sec car .1 sec is 14.8 feet in winning distance.
Why yes, yes it will.
.1 sec in drag racing is an eternity, and for a 14 sec car .1 sec is 14.8 feet in winning distance.
11-15-2005, 02:29 PM
#296
Originally Posted by mark kibort
Heinrich, you should know better!!
Great analogy, but you got it ALL wrong. actually, a bullet has no acceleration after it leaves the muzzel. why, because there is no more accelerative forces applied after it leaves the gun. This is very similar to our discussion.
sorry MSniper, its not the way it works.
if this was true, heinrich, a bullet shot in space would eventually go light speed and beyond! terminal velocity is usually for falling objects when they reach a parity of aerodynamic resistance and gravity.MK
The physics police are coming to get you now! I tink the physics term you are looking for is a body in motion stays in motion until acted upon by another force. (not "stays accelerating"!)
Great analogy, but you got it ALL wrong. actually, a bullet has no acceleration after it leaves the muzzel. why, because there is no more accelerative forces applied after it leaves the gun. This is very similar to our discussion.
sorry MSniper, its not the way it works.
if this was true, heinrich, a bullet shot in space would eventually go light speed and beyond! terminal velocity is usually for falling objects when they reach a parity of aerodynamic resistance and gravity.MK
The physics police are coming to get you now! I tink the physics term you are looking for is a body in motion stays in motion until acted upon by another force. (not "stays accelerating"!)
A projectile does momentarily continue to accelerate beyond the muzzle for a few milliseconds until the wind resistance overcomes the expanding pressure wave that follows the projectile out of the bore.
11-15-2005, 02:41 PM
#298
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Wow, these kinds of posts amaze me. Heinrich, why are you following this 'crap thread'? 
There is some good info and opinion in this thread if you sort through the 'crap' posts.
There is some good info and opinion in this thread if you sort through the 'crap' posts.
Originally Posted by heinrich
Glen why are you bumping this crap thread?
11-15-2005, 02:48 PM
#299
Originally Posted by GlenL
Wow. This is just too much.
There is no such "momentum of acceleration" as you guys are describing. If you push in the clutch, the car will begin to slow down immediately. It does not continue to accelerate or hold speed, it slows down. This is because the accelerating force has been removed and rolling friction and wind resistance are working against the motion of the vehicle.
F = ma. or a = F/m. No force means no acceleration and the effect is immediate.
This is true for all moving objects be they cars, bullets or space ships.
There is no such "momentum of acceleration" as you guys are describing. If you push in the clutch, the car will begin to slow down immediately. It does not continue to accelerate or hold speed, it slows down. This is because the accelerating force has been removed and rolling friction and wind resistance are working against the motion of the vehicle.
F = ma. or a = F/m. No force means no acceleration and the effect is immediate.
This is true for all moving objects be they cars, bullets or space ships.
Are you trying to tell us that acceleration ceases INSTANTANEOUSLY at the depression of the clutch?
Because as you know, it takes time for external factors(wind, rolling resistance, etc) to overcome the acceleration and subsequently cause decelleration.
It is not instantaneous. The time involved is small, but it is not instantaneous.
If i'm on the throttle and accelerating at 1g, and push in the clutch, if it was truly instantaneous and complete decelleration i would be slammed into the windshield with 1g of instantaneous decelleration force(because the car will(you alledge) instantaneously decelerate, but my body will not).
OBVIOUSLY that doesn't happen...
11-15-2005, 03:03 PM
#300
Range Master
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Originally Posted by heinrich
For boost the 2.2 is best.
With my foot on the floor, from a standing start, I cannot shift fast enough to get out of first gear, without hitting the rev limiter......For a flat out drag race from a standing start, I would start in second gear, give up a bit on the launch and more than make it up by having to shift only once on my way through 100 mph.....
leverage is for small hp motors......
