Author Topic: A realistic gearbox  (Read 1622 times)

Offline haggerty

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Re: A realistic gearbox
« Reply #15 on: November 02, 2009, 07:18:31 PM »
ok this would not work in real life ether.i drive a triaxle dump truck with 21 ton.if i was going down a hill and threw it into to neutral and before getting to the botton decided to put it in eight gear and the speed is far to much for eight gear and i let out the clutch.bang.there goes my rearend,gear box, trans mission drive shafts, and then some.it will not work.  :x

Thats understandable, which is why it should only be enabled once your vehicle has slowed down to that gears operational range.  I get mad at my wife all the time because she puts my car into 1st well before she has come to a stop...she thinks that it doesnt harm it since she hasnt let out the clutch...but in modern transmissions your synchros still have to match the engine speed and by jamming it into first too soon you will wear your synchro out.  But if your going downhill and you level out at 45mph in your M3, I dont see why you wouldnt be able to put it in 4th gear and just keep driving.
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Offline SectorNine50

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Re: A realistic gearbox
« Reply #16 on: November 02, 2009, 08:41:26 PM »
Thats understandable, which is why it should only be enabled once your vehicle has slowed down to that gears operational range.  I get mad at my wife all the time because she puts my car into 1st well before she has come to a stop...she thinks that it doesnt harm it since she hasnt let out the clutch...but in modern transmissions your synchros still have to match the engine speed and by jamming it into first too soon you will wear your synchro out.  But if your going downhill and you level out at 45mph in your M3, I dont see why you wouldnt be able to put it in 4th gear and just keep driving.

+1

As long as you are within the speed range of the top gear, then you will be able to engage it without problem.

As for going 90 in a tank... well... yeah damage to tracks would be an appropriate reprimand.  Maybe with the new damage model we'll see something like this.
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Offline MachFly

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Re: A realistic gearbox
« Reply #17 on: November 02, 2009, 09:05:15 PM »
Thats understandable, which is why it should only be enabled once your vehicle has slowed down to that gears operational range.  I get mad at my wife all the time because she puts my car into 1st well before she has come to a stop...she thinks that it doesnt harm it since she hasnt let out the clutch...but in modern transmissions your synchros still have to match the engine speed and by jamming it into first too soon you will wear your synchro out.  But if your going downhill and you level out at 45mph in your M3, I dont see why you wouldnt be able to put it in 4th gear and just keep driving.

 :aok exactly what I been trying to explain
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Offline batch

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Re: A realistic gearbox
« Reply #18 on: November 02, 2009, 11:44:29 PM »
just consider it the price you pay for high speed downhill in neutral.........as stated earlier....... if you want to "fix" the problem then the proper thing to do is stop the cause........ no more warpspeed slides

you do realize you can just as easily stay in gear while going downhill right?........ then when you get to the bottom you wont have this problem

I know I know........ then you cant have that unrealistic high speed that you want to further enhance by saying the inability to put it back in gear is unrealistic
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Offline hlbly

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Re: A realistic gearbox
« Reply #19 on: November 03, 2009, 07:10:30 AM »
I have had miles engagements with TOW vs. Tanks where M-60's have done just this kind of thing . While they dont go anywhere near the crazy speed we are allowed in here . Until the Jeep was replaced by the Hmmuwv getting over ran by MBT's was a thing you had to deal with . No tanker ever got them up over 40 mph , because replacing tracks is just not fun . I have also had them disable their governors for the same kind of reason . The only thing that stopped this stuff was a vehicle that could go 35 mph over terrain that would have rolled a jeep at 10 mph .

Offline Rebel

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Re: A realistic gearbox
« Reply #20 on: November 05, 2009, 01:46:23 PM »
IMO what your complaining about is what your asking for.

You want a realistic gear box, ok, but that is not a gearbox from some lightweight sports car.
Those are TONS you have rolling down that hill. Drop it into any gear but the exact correct one with the right amount of throttle and you should have an exploded gearbox, broken drive train or no tracks, or both plus tank tumbling down the hill.

Just for a rough example, try it in a farm truck with several tons of grain onboard, rolling 30 mph, and drop it into low and drop the clutch. Risks FAR FAR outweigh any benefit. Just was not done with tanks I do not believe. For sure not at more than a couple MPH.


Amen!  Was 13 years old driving a wheat truck when my brakes failed and had to go through the gears.  Missed the McDonald's in Orienta by -> <- that much.   :O
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Offline MachFly

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Re: A realistic gearbox
« Reply #21 on: November 05, 2009, 05:08:09 PM »
Amen!  Was 13 years old driving a wheat truck when my brakes failed and had to go through the gears.  Missed the McDonald's in Orienta by -> <- that much.   :O

so you stalled the engine and stopped that way?
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Offline Ghosth

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Re: A realistic gearbox
« Reply #22 on: November 06, 2009, 06:06:01 AM »
I suspect he downshifted his way through the gears. Which is very possible, as long as its within limits. If your doing 60 you can't shove it into 2nd drop the clutch and expect things to hold.

But doing 30, and work down through 3rd, 2nd, into 1st yes.
And with the brakes gone the only way left to stall the engine is turning the key off.

So all of a sudden you have a whole lot to do, and no time to do it in.  :)
Not to mention 60,000- 80,000 lbs of shove behind you.

Offline Rebel

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Re: A realistic gearbox
« Reply #23 on: November 06, 2009, 10:35:01 AM »
I suspect he downshifted his way through the gears. Which is very possible, as long as its within limits. If your doing 60 you can't shove it into 2nd drop the clutch and expect things to hold.

But doing 30, and work down through 3rd, 2nd, into 1st yes.
And with the brakes gone the only way left to stall the engine is turning the key off.

So all of a sudden you have a whole lot to do, and no time to do it in.  :)
Not to mention 60,000- 80,000 lbs of shove behind you.

Yup.  Goin' downhill, 6 speeds, 2 ranges (hi first, then low), Gettin it onto the shoulder, figured parking at McDonald's was a good idea, but the whole not stopping thing really called that into question. 

Finally bumped to a stop against the curb.  Front grille scant feet from the side of the building. 

Called for help on the radio, went inside, and promptly puked big time.
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Offline morfiend

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Re: A realistic gearbox
« Reply #24 on: November 06, 2009, 05:27:25 PM »
Yup.  Goin' downhill, 6 speeds, 2 ranges (hi first, then low), Gettin it onto the shoulder, figured parking at McDonald's was a good idea, but the whole not stopping thing really called that into question. 

Finally bumped to a stop against the curb.  Front grille scant feet from the side of the building. 

Called for help on the radio, went inside, and promptly puked big time.

 before or after changing pants??? :lol :lol :lol

Offline trigger2

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Re: A realistic gearbox
« Reply #25 on: November 07, 2009, 06:42:26 PM »
What difference does the size of the vehicle make? Same process all the time: clutch in, select gear, increase RPMs to match the speed, and clutch out.

The amount of shove (inertia), is one of the main differences.

You see, you can go about 90mph downhill now, but IRL, I doubt that the tracks would be able to hold up to it... So, the point is, coming to a complete stop seems like a better price to pay than being tracked. ;)
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Offline MachFly

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Re: A realistic gearbox
« Reply #26 on: November 07, 2009, 08:40:53 PM »
The amount of shove (inertia), is one of the main differences.

i was talking about the gearbox, it works the same way
"Now, if I had to make the choice of one fighter aircraft above all the others...it would be, without any doubt, the world's greatest propeller driven flying machine - the magnificent and immortal Spitfire."
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flew Spitfires, Hurricanes, P-51s, P-47s, and F-4s

Offline Ghosth

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Re: A realistic gearbox
« Reply #27 on: November 08, 2009, 08:17:45 AM »
Ok, on a sportscar, you have maybe 1500 lbs of weight in the car.
Now they know guys are going to use and abuse them a bit, so they overbuild it to a point.
The other thing is your limited to 4 wheels being your only contact with the ground.
With a sportscar on pavement, worse case scenario the tires break contact and skid.

With a grain truck, you have 60,000 lbs or more on 6 or more wheels.
Trust me, those wheels will NOT break contact. So instead of spinning the wheels it breaks a drive shaft, or throws a gear.

With Tanks its even worse, you have tracks. VERY difficult to "break contact" with a track on almost any ground other than soupy mud. They just don't do it, combination of weight and "grip" just doesn't let that track spin like a tire does on a sportscar.

So, instead of being able to slip, its going to throw a track (too much stress at one point, will sheer the pins)
Break a drive shaft, or turn steel gears into confetti.

Yes the gearbox works basically the same way as on a car.
But you don't have the safety built into it like a car does. (can't slip wheels)

So if your even a little bit off on your guess of which gear, and what throttle setting.
Instead of just squeeking your tires, your going to cause major damage to the drive train.
Hence its just not worth the risk.

That's not to say trucks don't downshift, they do, good ones do it a lot.
But they are not rolling down a hill at 20+ mph, drop it into a gear and pop the clutch.
Because that's a recipe for disaster.

And even more so for tanks than trucks.

Offline NoBaddy

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Re: A realistic gearbox
« Reply #28 on: November 08, 2009, 09:35:05 AM »
So, instead of being able to slip, its going to throw a track (too much stress at one point, will sheer the pins)

Oh my!! I had forgotten how much fun it is to change a track!! This is definitely some realism that the ground pounders need! :devil

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Offline AKP

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Re: A realistic gearbox
« Reply #29 on: November 09, 2009, 01:26:26 PM »
Dont get me wrong, I love GVing in AH...its a lot of fun.  But it's nowhere near realistic from a damage, repair, or driving standpoint.  If you are going to ask for a realistic gearbox, then you need a realistic clutch (yup, you will need to clutch those gears or deal with stripping them)... a realistic repair method (i.e: it takes TIME to change the track, repair a smoked turret, load ammo boxes, replace a shredded gearbox)... realistic movement (speed affected by terrain, possible thrown tracks, no more warp speed downhill runs)...

So basically... you would need a whole new system for GV combat.  Be careful what you wish for.

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