Was listening to a podcast of a a recent Cartalk show. A woman called in and was having with the synch on the manual transmission of her vehicle.
To make a long story short, Click and Clack said it bad for the synch of a MT to keep your hand on the gear shift knob .... having done that for years .... that seems the natural place for the right hand ..... is it bad to do that?
Former Porsches: 1968 912, 1973 914, 1979 924
Engines: rear to mid to front and now heading back with mid
RMR/PCA DE Instructor
Current: 2014 Cayman S
Prior: 2007 Cayman, 2004 Boxster S, 1989 944
Yes, it is bad for your transmission. It does wear the synchronizers. I seldom agree with Click & Clack's philosophy, but they got this one right.
Last edited by blueone; 10-02-2010 at 09:26 PM.
I've also heard the same and spoke with what I consider a fairly knowlegeable transmission repair shop owner about it. He said he's also heard this and considered it an old wives tale. He has never been able to find an explanation of just what is being damaged or how and has never seen any damage which was obviously the result of this driving style. And in fact he confessed to doing the same regularly.
So unless there is some expert available to refute what my "expert" has reported, I see no reason to worry about it and have on occassion found myself doing the same with no ill affect to date, over several cars.
The damage myth might be true on older cars, particularly ones with direct mechanical rod connections between the shifter and the tranny.
Modern Porsches (and most modern cars) are cable shifters and there's no way it's true.
The 'natural' place for your hand to rest is on the wheel. You'll realize this if you ever have a high speed blow out.
Porsche Cayman DE1:http://youtu.be/KnEMv1Q5JKg
Hand on shifter synchro-mesh issue? Not for cable linkage MT's; although you may wear the ball pivot holder (I believe it's made of a black hard Nylon material), if you keep moving the shifter from side to side.
Bigger issue: folks who habitually keep the clutch depressed while sitting at a stop light. Have heard it loosens/weakens the return spring and can cause premature wear of the throwout bearings.
The basic theory is that when you move the shifter it engages the syncs, and causes some wear. On some cars, like my last, the owners manual had a written warning against leaving your hand on the shifter. I guess it depends on the linkage.
It also depends on how much pressure one puts on the shifter. I tend to leave it there when I know that I will be going up or down the gears (ie in anticipation) but when I know I will remain in gear for a while it goes back to the wheel where it belongs. Many times when I anticipate having to change gear my hand rests there but it really is not resting or putting much pressure as its mainly just touching without really leaving my arm weight on it....this is completely different that putting your arm weight on the shifter. So assuming this issue is true then the amount of weight or resting on it needs to be taken into account.
09 Cayman S- Meteor Gray Metalic & Black Interior- Carrera Sport 19 wheels, Alcantara GT3 Steering Wheel, Alcantara Gear Lever & Handbrake, Rear Center Console in Aluminum Look, Alcantara Storage Lid with Logo, Side Strips with Model Designation, Spoiler Lips in Aluminum look, Bi-Xenon Dynamic Cornering lights, Bose Premium System, Heated Sport Seats, Sport Chrono, Colored Crest Wheel Caps.
Well, there's another really good reason to not rest your hand on the gearshift - you should keep both hands on the steering wheel whenever possible. You have much better control of the wheel with both hands on it if you need to make a sudden emergency manuever. This opinion is based on 38 years of accident free driving. I do drive fast but safely and defensively.
Totally agree with the general consensus: both hands on the wheel!
I've completed a couple of driving courses, and that's one of the first things that's stressed. Move your hand from the steering wheel to change gear, and then straight back to the steering wheel.
I think the topic had to do with whether or not damage is done to the transmission by resting ones hand on the gear shift knob while driving, not wether its a safety issue or not. The question is damage or not. We can beat the safety issue to death with all kinds of bad driving habits but I would hope that would go to a separate thread and not this one. Transmission damage or not, that is the question and if so, then how???
If you attend one of the driving schools, the instructor will smack your hand if you keep it on the gear shift knob!
Both hands on the wheel. After a shift - hand goes back to the wheel. It's really as simple as that.