Who decided to make sequentials so forward is down a gear and back is up a gear?
#16
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I was waiting for some smarta** to come up with the 901 5 speed pattern.
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Larry Herman
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Larry Herman
2016 Ford Transit Connect Titanium LWB
2018 Tesla Model 3 - Electricity can be fun!
Retired Club Racer & National PCA Instructor
Past Flames:
1994 RS America Club Racer
2004 GT3 Track Car
1984 911 Carrera Club Racer
1974 914/4 2.0 Track Car
CLICK HERE to see some of my ancient racing videos.
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true enough, but at least its either H pattern or Dogleg, and every time you shift you use the clutch and if there is an extra gear you know where it is.....its just more consistant and well established....there doesn't seem to be any established method yet to sequentials.......some you use the clutch on downshifts not up shifts....some you dont.....some you have to blip....some you don't........some no need for the clutch at all.....when u get into a seq car you have to ask......any standard you realy don't have to ask how it works.
In general, if you're using a sequential or H pattern race gearbox, you only NEED to use the clutch to get started from a roll...after that, using the clutch is only needed to be easier on the equipment, though I would argue in most cases, if done correctly, you can shift without the clutch without causing any additional wear. I've driven race boxes that were actually harder to shift correctly when using the clutch. And you always need to blip on a downshift to match revs, the only question is whether you'll be doing it with your foot or whether the computer will take care of it. Same goes for lifting on the upshift...either the computer will do it for you, or you'll need to back off on the throttle 10-20% while you slide into the next gear...when done correctly in a race H-pattern, it often feels like the transmission is pulling itself into the next gear for you.
Seperate out for a second the "sequential" BS in the BMW, Ferrari, etc street transmissions. Those transmissions aren't sequential at all, but rather normal H-pattern syncroed gear boxes being shifted by a computer controlled set of hydraulics. And they all have clutches, even though your foot isn't actuating them.
#20
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When you look at it that way it makes perfect sense, but when you look at it from a perspective of going "up" and "down" its obviously opposite. I was just noticing this the other day driving a customers BMW and it had it "backwards" from racecars so I was confusing myself and trying to think which way made more sense.....
My 02 530i automatic has it the right way. Forward = down, back = up a gear. I actually have seen a procedure to reverse it on the older e39 5 series that have it the other way around.
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What Geoffrey said. It makes way more sense when you think about the dynamics of a car...especially in a single seater with aero where you may be braking at 2+ G's.
I believe some of the single seater sports racers that run motorcycle motors and transmissions actually have it "backwards" due to the layout of the gearbox.
I believe some of the single seater sports racers that run motorcycle motors and transmissions actually have it "backwards" due to the layout of the gearbox.
I was just at a shop with two D Sports Racers that were fairly identical except that one had push for going up the gears and the other had pull to go up the gears. When people jump in the car that has 'push' to go up a gear they often have troubles and have issues going into braking zones. A 'pull' shifter seems to be much more intuitive for a driver to deal with in the heat of a battle.
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Who said you need to use the clutch just because it's a H-pattern? Most dog ring H-pattern race boxes can be shifted without the clutch just as easily as a race sequential. You can also setup computer controlled throttle cut for no lift shifting as well. With a sequential, you still need to blip when you shift down a gear...the only question is whether you will be doing the blip or whether you program the ECU to automatically do the blip for you.
In general, if you're using a sequential or H pattern race gearbox, you only NEED to use the clutch to get started from a roll...after that, using the clutch is only needed to be easier on the equipment, though I would argue in most cases, if done correctly, you can shift without the clutch without causing any additional wear. I've driven race boxes that were actually harder to shift correctly when using the clutch. And you always need to blip on a downshift to match revs, the only question is whether you'll be doing it with your foot or whether the computer will take care of it. Same goes for lifting on the upshift...either the computer will do it for you, or you'll need to back off on the throttle 10-20% while you slide into the next gear...when done correctly in a race H-pattern, it often feels like the transmission is pulling itself into the next gear for you.
Seperate out for a second the "sequential" BS in the BMW, Ferrari, etc street transmissions. Those transmissions aren't sequential at all, but rather normal H-pattern syncroed gear boxes being shifted by a computer controlled set of hydraulics. And they all have clutches, even though your foot isn't actuating them.
In general, if you're using a sequential or H pattern race gearbox, you only NEED to use the clutch to get started from a roll...after that, using the clutch is only needed to be easier on the equipment, though I would argue in most cases, if done correctly, you can shift without the clutch without causing any additional wear. I've driven race boxes that were actually harder to shift correctly when using the clutch. And you always need to blip on a downshift to match revs, the only question is whether you'll be doing it with your foot or whether the computer will take care of it. Same goes for lifting on the upshift...either the computer will do it for you, or you'll need to back off on the throttle 10-20% while you slide into the next gear...when done correctly in a race H-pattern, it often feels like the transmission is pulling itself into the next gear for you.
Seperate out for a second the "sequential" BS in the BMW, Ferrari, etc street transmissions. Those transmissions aren't sequential at all, but rather normal H-pattern syncroed gear boxes being shifted by a computer controlled set of hydraulics. And they all have clutches, even though your foot isn't actuating them.
The S2 CS is white...
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Who said you need to use the clutch just because it's a H-pattern? Most dog ring H-pattern race boxes can be shifted without the clutch just as easily as a race sequential. You can also setup computer controlled throttle cut for no lift shifting as well. With a sequential, you still need to blip when you shift down a gear...the only question is whether you will be doing the blip or whether you program the ECU to automatically do the blip for you.
Race last weekend the guy who qualified on pole lost his clutch during the Q session. He started from the back of the grid because we had to give him a push to get the car fast enough so he could select first. He ended up winning his class and was on the tail of the overall leader when checker flew. Clutches are overrated
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Race last weekend the guy who qualified on pole lost his clutch during the Q session. He started from the back of the grid because we had to give him a push to get the car fast enough so he could select first. He ended up winning his class and was on the tail of the overall leader when checker flew. Clutches are overrated ![jumper](https://rennlist.com/forums/graemlins/jumper.gif)
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As for getting the car started, I like VIR's elevated and sloped false grid. It helps with starter and clutch issues. I heard it was built that way because Harvey, the owner, is into Vintage race cars.
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I use the clutch to start. Last year I had a rough engine and had trouble getting it to run at the right temps so blipping was impossible. I got use to just jamming it down the gears. We checked the dogs after 2 weekends and they were pristine too. If I move it right it's hardly noticeable. My RPM splits are usually no greater than 700 RPM. No worse for wear than the guy who was blipping shifts.
I don't know of any FC guys that use the clutch other than to get the car rolling.
Harvey is a great guy and I wouldn't be shocked that was the reason it's sloped. Road Americas is opposite and a slight uphill drive. Sucks for starting off. I'm looking forward to spending the summer at VIR with the FC. Although I'm trying to work a deal to end up with a 98 FF instead.
I don't know of any FC guys that use the clutch other than to get the car rolling.
Harvey is a great guy and I wouldn't be shocked that was the reason it's sloped. Road Americas is opposite and a slight uphill drive. Sucks for starting off. I'm looking forward to spending the summer at VIR with the FC. Although I'm trying to work a deal to end up with a 98 FF instead.
#26
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Given the relatively simple architecture of "unit" motorcycle engines and transmissions, all you'd have to do to convert between the two is to reverse the arm on the shift actuator...if the pushrod is above the centerline of the shifter shaft, make it below, and visa versa. That's how you do it on bikes...really.
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On my 964 TIP, "UP" is forward, "DOWN" is back. Had Don *** trying to drive my car for a couple of laps at the Glen, the shift pattern fooled him a number of times as his sequential is the "right' way.
I'm actually contemplating rewiring the TIP the other way.
I'm actually contemplating rewiring the TIP the other way.
#28
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e39 and e46 were screwed like that on their auto box with the suggestion lever. IIRC '02 was the year they switched patterns.
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Given the relatively simple architecture of "unit" motorcycle engines and transmissions, all you'd have to do to convert between the two is to reverse the arm on the shift actuator...if the pushrod is above the centerline of the shifter shaft, make it below, and visa versa. That's how you do it on bikes...really.
#30
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With the race "reverse" pattern, your foot stays on top of the lever in preparation for the upshift so there are no issues with ground/foot/lever interference
This assumes corners are 2nd gear or higher