The clutch pedal would be attached to the throttle so that when the clutch pedal is completely depressed, the gas to the engine would be at idling speed, that way, you wouldn’t have to release your foot from the gas pedal while shifting gear selections, and you won’t rev the engine. As you gradually release the clutch pedal, the gas is gradually increased back to whatever position the gas pedal is in.-- BJS, Nov 28 2006 What if you are doing a hill start with a heavy trailer attached, and need to give it a bit more throttle as you release the clutch?-- Texticle, Nov 28 2006 I've never had to... I guess the idea should not be in affect in first gear. Or it could have a dial on the dash to adjust the amount of throttle allowed, or maybe this idea could include "the hill holder".-- BJS, Nov 28 2006 How about one step further: When the clutch is engaged and you are shifting gears the rev limiter holds the engine at the rpm that the engine will be spinning at in the next gear for a smooth engagement.-- acurafan07, Nov 28 2006 Maybe....-- BJS, Nov 28 2006 But then you wouldn't be able to engine brake.-- BJS, Nov 28 2006 this would seriously inhibit ones ability to chirp the tires or to double clutch. Also it would completely eliminate down shifting making winter driving a real mess.-- jhomrighaus, Nov 28 2006 Why do you think it would "completely eliminate down shifting"?-- BJS, Nov 28 2006 to downshift properly you put in the clutch then rev the engine to bring RPMS up to level of next lower gear then release clutch. If you dont do this you will either,create excessive wear on the clutch with slow engagement or you could cause the drive wheels to break loose due to rapid impulse of torque causing a loss of control.-- jhomrighaus, Nov 28 2006 I don't completely understand what you mean, but ok.-- BJS, Nov 28 2006 have you actually driven a stick shift?-- jhomrighaus, Nov 28 2006 Yes, I drive a Hyundai Accent (which doesn't have a tachometer).-- BJS, Nov 28 2006 //...or you could cause the drive wheels to break loose due to rapid impulse of torque causing a loss of control.// I thought stability assist and traction control pretty much take care of that.... I like the idea, and I think i'm going to post a seperate idea inspired by this.-- acurafan07, Nov 28 2006 But who wants stability assist and/or traction control...
Not me, anyway.-- Custardguts, Nov 28 2006 //the drive wheels to break loose due to rapid impulse of torque//
Are you not joking?-- Zimmy, Nov 29 2006 //Are you not joking?//
Done it once or twice, albeit while driving very large trucks.
Its like stabbing the brakes hard if you just pop the clutch on a down shift(wheels slow their rotation sharply while on a low friction surface means sliding begins and no more traction)-- jhomrighaus, Nov 29 2006 Compression lockup, y'all. Easy to do with a large diesel engine.-- Custardguts, Nov 29 2006 //Compression lockup, y'all. Easy to do with a large diesel engine//
Easy to do with my 1.9 diesel turbo car too.
As [JH] says, you don't just blindly fully release the acellerator when changing gear, it's all about equalising rotation speeds.-- webfishrune, Nov 29 2006 //the clutch pedal is completely depressed//
Awwww-- BunsenHoneydew, Dec 03 2006 yeah, this would make matching rpm's impossible, making driving a manual transmission correctly impossible. fishy.-- nomel, Feb 20 2007 I wouldn't necessarily limit it to idling speed, but perhaps something could be done with the clutch position switches to limit the engine throttle to, say, below 4500 rpm. Pop your clutch above that and you start to destroy things in a real hurry. There are also things you can do with the hydraulics to damp the clutch engagement so as not to tear up the drivetrain.-- RayfordSteele, Aug 30 2007 random, halfbakery