Proper down-shift points? - Page 2 - Ford Mustang Forum
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Maybe I misread the OP but I thought by "moon-shot" he was referring to downshifting and hitting the gas. Y'all sound like this is downshifting and stopping very quickly. Wouldn't recommend either one, personally.

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Originally Posted by MustangInTexas View Post
...he was referring to downshifting and hitting the gas.
You can do this too, if you're good at it. I've done it on occasion. But there still shouldn't be any reason to drop it into first gear.

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A properly rev-matched downshift is seamless and causes zero wear on the transmission's synchos or the clutch.

And figuring out how to match isn't rocket science. For example if you find yourself wanting to shift into 3rd at 55mph, accelerate up into third gear from a stop and see how many RPMs your motor is turning in order to hold that speed. Let's say it's 5800rpm.

Later, when you're cruising in 6th gear and wish to drop to 3rd, clutch and shift to neutral. Blip the throttle til you catch the needle just under "6" on the tach with a glance, slip the trans effortlessly into 3rd, and release the clutch quickly so the revs don't drop before you do it. The key is to rev-match before pulling the shifter into 3rd. Most semi-skilled drivers will do it after shifting into 3rd, before releasing the clutch pedal. This keep you from dragging the flywheel up to speed by burning your clutch disc against it, but all the "rev matching" inside the transmission is still being done with the synchronizers.

When you get that down, learn to heel and toe a downshift in a corner: Apply the brakes approaching a corner with the toe of your foot as normal, use the side of your foot or the heel to smoothly revmatch and downshift the transmission DURING the brake zone, so that as soon as you enter the corner you're in your power band in a lower gear and ready to accelerate through the apex and out the exit. You're holding the clutch down with your left foot nand modulating both of the other pedals with one foot at the same time.

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Quote:
Originally Posted by Blazin72 View Post
You can do this too, if you're good at it. I've done it on occasion. But there still shouldn't be any reason to drop it into first gear.
Yes, we are on the same page on this. Don't see a reason you would do this into 1st gear. Otherwise, it can be pretty common.
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If someone sets up an obnoxiously tight clamshell, I will drop into 1st autocrossing. I don't heel-toe though. Its possible to just put in the clutch, push it into 1st and get back on the gas while letting out the clutch without anything weird happening.

I execute said procedure at about the 1:10 mark:

https://www.youtube.com/watch?v=iWZPUtSCTyk

Seems to happen quick in the video, but it feels like it takes forever when driving.

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Granted I've only been driving a manual for 3 months, but if I'm coming to a red light or stop sign, I usually downshift to 3rd and then just coast. Generally I will only down shift into 2nd if I'm taking a sharp corner or turning, or hitting really bad traffic. I never downshift into 1st, as frankly I hate first in the mustang.

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With a GT or 6cyl you would not normally down shift into 1st. If you were driving a GT500 (which he is) you would probably downshift to first when you want to go, it does 60mph in 1st.

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OP; your stock MT82 car has a Chinese made transmission. DO NOT FORCE ANYTHING!!! Your transmission has shift lock-out, which will not allow you down-shifting into 1st when you will over-rev and grenade the engine. Rev matching is something you need to read all about. It's easy, but you need to understand mechanically what is happening in the transmission and with the engine.

When I come to a light, I just slide it out of gear when there is no force on the drive-line, in that instant between power on and power off, it just slides out of gear with 0 effort. I don't down-shift through the gears, that's just un-necessary wear. With the 3.73s I skip gears quite a bit in traffic.

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post #24 of 24 (permalink) Old 06-26-2014 Thread Starter
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Quote:
Originally Posted by Gleumer View Post
With a GT or 6cyl you would not normally down shift into 1st. If you were driving a GT500 (which he is) you would probably downshift to first when you want to go, it does 60mph in 1st.
Actually I think first gear is done @ 40-45? But I do know it can do close to 80 or so in 2nd...bleh now I need to drive to it refresh my brain. the '13 GT-500 I think 1st is good until 60-62mph, but the '13 is geared for 200+mph, guess I'll have to recheck, I haven't been driving it super hard as I'm still learning, but I don't think 1st with the 12 and minus GT-500's is 60 mph

Also, Nova, it has a friggin TR6060, not that other junk the BOSS mustang had.


Anyway I've gotten far more used to rev matching, and it sure makes down shifting smooth as silk, though I'm still a total noob, Appreciate all the tips

*EDIT* Found the 2010 vs 2013 GT-500 gear speeds.
2010 GT500
1st - 42mph
2nd - 77mph
3rd - 107mph
4th - 142mph
5th - 190mph (305kph)
6th - 282mph (451kph)

2013 GT-500
2013
1st : 2.66 ==> 65 mph
2nd: 1.82 ==> 96 mph
3rd: 1.30 ==> 134 mph
4th: 1.00 ==> 175 mph
5th: 0.77 ==> 227 mph
6th: 0.50 ==> 350 mph

I assume the 2010 is the same as the 11-12 SVT GT-500's unless the gearing ratio is changed.
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