Last I checked the s2k is a street car.. I don't advise anyone bother double clutching on the track, but on the street is there any harm in double clutching? I don't think so. As I said, this isn't my first honda and many people have seen benefits (less syncro wear) due to double clutching. It may be negligible but it's real. Regarding skip shifts.. If you're slamming 5/6th gear from 3rd you're an idiot, plain and simple. Problem is there are varying techniques and degrees of things.

 

Yes. Different people/different driving styles. Don't let the "double clutching does nothing" Nazis convince you otherwise..

 

If that's the case he should be driving a Prius or Leaf

 

If that's the case he should be driving a Prius or Leaf
[/quote]


whats your secret to never sitting at red lights ever? some secret app or magic button? or does your trolling powers make all green lights as well?

 

If that's the case he should be driving a Prius or Leaf
[/quote]


whats your secret to never sitting at red lights ever? some secret app or magic button? or does your trolling powers make all green lights as well?
[/quote]

OMG Watson You seriously still don't get it?

 

When coming to a stop, I rev match down in the box to at least third and try to stay in gear as long as I can without bogging. You shouldn't be in 6th slowing down to 20 mph. I want the gear I'm in to be appropriate for my wheel speed at all times. I think being out of gear while moving at any more than 10 mph is dangerous. Tons of videos online of guys doing 2 - 4 pulls on the freeway and then pulling the car out of gear at 90 mph. Always thought it was a precarious thing to do, but lots do it. I never skip gears in either direction.

 

Many times when I coast in neutral, I am trying not to reach a red light before it goes green, at as high a speed as possible. (I live in the country. Stop lights on 50 to 70 mph roads are not unusual. And yes there is a game element to it.) If I need to slow more, I breathe on the brake. If I win the game, and the light changes before I get there, I shift straight to the appropriate gear for current speed. Staying in gear off throttle slows too fast. Part throttle while staying in gear(s) requires more effort and is not as smooth.

 

From context I think in your first sentence you mean street use, and I agree. For race cars I'm not sure if you mean purpose-built for racing, or racing a street car in a "stock" class.

On a purpose built race car everything is different. Even with tradditional H pattern shifter, there are no synchros and the dog teeth are quite different in design from a syncho box. Without the synchos fighting back, they are easy to shift, often without using the clutch, both because of the low resistance and because the dog teeth are large, intermesh easily when not loaded, and are shaped to pull themselves together whenever one side is driving the other. It helps you shift instead of pushing back. DC may sometimes be used, but not often. My only experience is with our Formula Ford which had a non-syncro Hewland box. In autocrosses I used DC to downshift to first, to avoid a grind. The car had a really low first gear that no road race would have reason to use. Rev match alone was not enough, at least for me. But I agree that mostly DC is not used with built-for-racing boxes.

However, in autocross with a street AP1 S2000 there is one situation where DC is optimal, if not required. And no surprise, that is downshift to first. With most cars, for autocrossing, except at the start, it is usually as fast to lug 2nd as to go down to first, so you stay in 2nd because it's easier. Not for the the AP1. Torque comes only at high revs, there is a significant step up from 1 to 2, and no VTEC overlap between them. And max speed in first gear is comparatively high at 42 mph. To accelerate in the AP1, you go to first whenever you can. In many autocrosses you will do it several times per run.

But why DC? For competition there is only one relevant answer: It's faster. When you try to just push the shifter into first at 30 or 35 mph the syncho push-back is really high. You can grit your teeth and overpower it, but you will probably unconsciously counterpull on the steering wheel, and may crunch the teeth. You can feel the synchro singing through the lever. You can hear the synchro whining. I cringe and imagine the shift lever bending. It's a big distraction. And it's pretty easy to have the shift bounce back out if you don't get it absolutely all the way into the detent. But with a quick DC to spin up first gear, the shifter slides right in with no effort. No wasted time, no distraction, no missed shifts.