A friend of mine who is a novice track junkie wanted to learn about heel-toe shifting. So, I thought I'd give making a video a shot. Here is what I came up with: http://www.youtube.com/watch?v=cPj9XXW25GA Mike
Cool vid, just curious tho, whats that blue thing to the right of the steering colum, looks like an air horn?
haha.... I was waiting for that question. It IS an air horn. Why do I have it? There have been several incidents of cars backing into Lotus Elises. The Elise drivers laid on the horn to no avail. The car in front just kept backing into them - can't see them, can't hear them. The air horn is a low-tech "proximity warning device." Sure enough, shortly after I got it, I was in the lane in front of a supermarket where there are cars parked up against the shopping center. I was stuck in traffic between two cars. And, the old fart parked to my left started backing up right into me! He was going to broadside me! I gave a courtesy honk on the stock horn when I saw his reverse lights go on. Nope... he started to back up! Crap! I grabbed the airhorn and blasted him. I probably stopped his heart momentarily, but he stopped - about 12 inches short of hitting me. The people walking in the passageway in the shopping center about came out of their skins, too! LOL! But, that silly airhorn saved my brand new Lotus from being severely damaged. Mike
Very good instructual video mate well done. That video will be on most the driving forums by the end of the week
The very *first* mod I made to my Alfa Spider (back in '79) was to augment those anemic electric horns with air horns. My mechanic made mounting brackets for the compressor and horns, and I wired up a switch to select standard (for inspections at a NJ state station that would fail a sportscar for any reason), air, or both. (That's the station that failed the XASs for "asymetric tread wear" -- despite their being made that way.) As it turns out, the "both" position was all I needed. A tap on the horn ring sounds the little "meep" horn, but holding it down spools up the compressor. I'd have preferred fiamms to the trucker horns, but they were a gift. Either way, those horns have saved me from convergence with a sleep-driver three or four times in the last 27 years. Second-best investment I made on that car (after the industrial strength undercoating).
OK, I guess I could have done a search, but here it goes: Is heel-toe shifting (and/or double clutching) required with Sycromesh? I thought Sycromesh kept the revs up, eliminating the need for the fancy foot work. I told you it was a newbe question. -F
Haha sounds like a great idea, the horn in my little saturn isn't very powerful either, but at least people can see my car when they're backing up into it.
Agreed... Once you learn the technique, you'll always have it...like riding a bike. Practice is all it takes.
Excellent video. I have seen several on this and yours is by far the best. The elise seemingly the ideal car. If I were you I'd slow motion the naughty bits.
Newbie questions are OK! There are probably plenty of threads discussing why H&T shifting is important. It's actually more than important. It is CRITICAL to performance driving / racing. To get beyond the novice level of performance driving, you MUST learn this technique. The reason we downshift is to be in the proper gear do extract the best power from the engine as we accelerate out of and away from a turn. We do NOT downshift to slow the car down (compression braking). Brakes are for slowing down the car. Two reasons: In using the brakes, WE are controlling the deceleration of the car. If you downshift and slow the car by letting the clutch out, it is an unpredictable deceleration. When you are near the limits of traction, an uncontrolled deceleration (by engine compression braking) can throw your car into a spin. The second reason is that it's hard on the tranny parts, which are much more expensive than brake pads. Now... double clutching is technically not necessary with synchromeshed transmissions. There are those that will argue, however, that it is still better than single-clutching. Double-clutching IS necessary with "dog-box" / non-syncrhoed trannys. So, the idea is to slow down, make the turn, and accelerate out of the turn as SMOOTHLY and quickly as possible. H&T technique allows a driver to do this while managing the BALANCE and WEIGHT of the car. Hope that helps! Mike
Slow motion - good suggestion. I've been thinking of a whole bunch of ways to improve the video. Funny... this started as just a little project to show my friend what H&T was. At last check, the video has over 1100 views, and it's only been up since Saturday! Mike
nice video, especially in the Elise without anything in the way blocking the view! I must agree that it is much easier on a vehicle with better placed pedal positions. A good read up on the importance of H&T practice is in the Porsche Owner Club driving manual (PDF), 26 pages of methods and race terms for the novice.
I read Mike's answer and, while informative, it may not have answered your question. H&T is not required with a gearbox equipped with "synchromesh," however, it can help reduce the loading on the synchros and even better, it can make sure that when you release the clutch (for the final time, if double de-clutching), the engine speed and the rear wheels are near the same provided you are in the appropriate gear, promoting better control of the car at a sensetive time. <grin> Synchromesh are two-piece "brakes", one part (like a clamp) affixed to each gear (except reverse) in most modern road-going cars that allow the gear to "come up to speed" as the second part of the synchronizer, the "sleeve," compresses the "brake" on the gear and makes it "match" the speed of the shaft that the sleeve is indexed (via the hub) to. Synchros "wear" by becoming less effective over time by repeated harsh use and "hurrying" the process. The part that everyone hears grinding are actually little engagement teeth on the gear gnashing with their equivalent on the sleeve. The gears are actually all in "constant-mesh," turning on the shaft until "selected" by the driver. I've probably opened up more of a can of worms by this obtuse explanation, but suffice it to say that using a proper heel and toe regimen in a Ferrari can reduce wear substantially on the gearbox, plus it makes you look cool to whoever is riding with you! <grin> On the racetrack, it's a mandatory "advanced technique" with a synchronized 'box, even more so with a "dog-ring" non-synchronized 'box (unless you move your hand really fast <grin>) Good luck and thanks for the video. -Peter
Thanks for the technical info, Peter! Alternatively, one could just go by a Ferrari with the F1 tranny and let the computer do it all! I agree that a nice side benefit is looking and sounding cool! Mike
You, my friend, need to install one of these under the bonnet of that Lotus - damn the weight increase! Just imagine the looks on their faces! http://youtube.com/watch?v=BkJwcR21VLk
That's funny. I have never seen or heard one installed in a car before in person. I hope they will not become the new fad. (Anyone else here remember Bub Rubb and Lil' Sis? Wooo Woooooo!) Cheers!! Steve