Heal Toe

[BigsViper]

This occurs when some fool runs over your toe while you're standing in the pits. It requires you sitting out several laps while your toe heals. However if you're referring to the HEEL/TOE technique for racing... I'll let someone else answer that!! LOL

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[C O D Y]

Double clutch heel toe shifting allows you to synchronize the speeds of the input and output shafts in a non synchronize transmission.

While applying the brake (downshifting) you push in the clutch and shift to neutral from a higher gear. Let out the clutch (still in neutral) and with your foot still on the brake (using your brake foot) you blip the throttle. It's done with the outside of your foot. This brings the RPMs up and allows you to push in the clutch (immediately after the blip) and move the gear lever into a lower gear. If you have ever had to drive a manual transmission car without a clutch, then you know what I mean by matching the RPMs.

I have never road raced or even attempted to heel toe double clutch, but I did stay at a Holiday Inn last night.

 

[ACR Joe]

Sorry Cody, but Don Bennett's response is right on the mark. Thanks Don!

 

[Craig 201 MPH]

You can also just do the same as Cody except I don't put the car in neutral when I blip the gas. I just put it in the gear ie, 4-3 downshift. I rev the car with the clutch in and then release it when the revs match more or less. I've never had my car at the track, I do it when driving around town. Sounds cool and my friends always ask, "what the heck are you doing???"

Craig

 

[Mike H]

while Cody is almost there....in road racing its much faster than that, you skip the nuetral position, and as the clutch is pushed in the blip of the throttle revs the engine speed up to allow the transmission speed to be more smooth in the downshift, this stops the rear end from lunging as the downshift occurs.

 

[John Johns]

I've read that the term 'Heel aand Toe" dates back to a time when some sports cars had the clutch pedal between and gas and brake pedals. You really did use your heel and toe!

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[Jerry Scott[CO]]

On the Viper with the stock pedal set-up, it is very difficult to do the correct heel toe shift (heel on brake and toe on accelerator), because of the distance between the brake and the accelerator. The best way that I have found it do this in the Viper is to have the toe on the brake and the heel on the accelerator. The reason for this exercise is this. As you come into a turn with the car reved near the upper rpm range, what happens when you push in the clutch to down shift and while you are braking for the turn? You guessed it, the rpms drop to near idle since your two feet are busy braking and working the clutch. So, you down shift to the next lowest gear, and as you let out the clutch, you hear a chirp from the rear tires, because the engine now goes from idle to a much higher rpm. In racing, this can upset the car and cause it to lose traction at the rear wheels and go off the track. To prevent this you want to keep the rpms from dropping to idle by just holding your heel on the accelerator while you are braking and while you have the clutch in, to maintain about the same rpm as you had before you pushed in the clutch. Now when you down shift and let out the clutch, the engine does not have to be forced to the correct rpm by the drivetrain and the rear wheels do not chirp. Remember, if you hear the chirp, you are not doing it correctly and this is dangerous in a track situation. It takes a few time of practice to not have your heel on the accelerator when the clutch is still engaged. You can of course cheat by not doing heel toe, and by slightly slipping the clutch on the release to get the rpms back up to avoid the churp. But this still loads up the drive train and wastes time in the down shift. Practice on the street as you are braking and making turns at intersections. It will eventually come naturally. If you have long legs, then you may need to raise the steering wheel a notch, when doing this on the Viper, since your right knee has to rotate up to get your heel to move over to the accelerator. Just my $.02 of course, and others will have other ways to deal with it.
Jerry Scott[CO]

 

[jcaspar1]

I thought that heel-toe technique was to keep the throttle pedal from rattling while braking!

 

[Chuck Greggs S Arizona ACR]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by jcaspar1:
I thought that heel-toe technique was to keep the throttle pedal from rattling while braking!

<HR></BLOCKQUOTE>

Jeff,

I have a solution to your throttle pedal rattle. I have not told anyone because it sounds like a corn cob fix. Kind of embarassing for a $70,000+ car. But, it only takes a minute and no one will know. No need to disassemble the pedal assembly, and does not affect operation of throttle. I will tell anyone that promises not to laugh at me. I thought it was pretty clever, but anyone could probably figure it out if they really tried.

No jokes, please!
Chuck