Is it bad for us who has short shifter to have a heavy shift knob?
12-30-2002, 01:13 PM
#5
AudiWorld Super User
if you're talking about the advice to not rest your hand permanently on the shifter
so it can move about if needed, i seriously doubt that a heavier shift **** will create a similar bad condition.
i'm sure it's not heavy enough to hold the shifter in place if it wants to move a bit.
That was the short answer. here's a longer one:
think of it this way, the shortshifter <b>reduces <u>your</u></b> mechanical advantage in moving the shift linkage by allowing a shorter movement of your hand to create the same/stock movement in the shift linkage. or is that increasing the advantage? whatever, you get the idea right?
by the same token it will <b>increase <u>the shift linkage's</u></b> mechanical advantage in moving around the shift lever (from you releasing the gas or hitting a bump or the like). so with the stock shift ****, it's actually working <b>less</b> to bounce it around (what little it does) so it can handle a heavier shift **** without stressing the components any more than the stock shift lever/**** combo.
i've done no calculations as to what weight shift ****, with the increased mechanical advantage, would be equivalent to the stock ****, but you can do so if you wish.
i'm sure it's not heavy enough to hold the shifter in place if it wants to move a bit.
That was the short answer. here's a longer one:
think of it this way, the shortshifter <b>reduces <u>your</u></b> mechanical advantage in moving the shift linkage by allowing a shorter movement of your hand to create the same/stock movement in the shift linkage. or is that increasing the advantage? whatever, you get the idea right?
by the same token it will <b>increase <u>the shift linkage's</u></b> mechanical advantage in moving around the shift lever (from you releasing the gas or hitting a bump or the like). so with the stock shift ****, it's actually working <b>less</b> to bounce it around (what little it does) so it can handle a heavier shift **** without stressing the components any more than the stock shift lever/**** combo.
i've done no calculations as to what weight shift ****, with the increased mechanical advantage, would be equivalent to the stock ****, but you can do so if you wish.
12-30-2002, 01:48 PM
#6
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That's a good question, and I've studied it somewhat.
In fact last week I was looking at the question by simulating the shifting forces/velocities using Excel in a numeric simulation.
All else being equal, a heavier shift **** will have 2 effects:
1. During the shift, it will reduce the force-feedback into the hand, caused by the mechanism's spring-loaded ball detent. This, to many, will be perceived as a "smoother" shift.
2. It will create more momentum in the shift mechanism which causes higher impact forces on the sliders and synchros.
One really never gets something for nothing in the engineering realm. I would opt for the lightest possible **** myself.
As far as short shifters, reducing the throw will reduce the impact forces. A good thing IMO.
Machining out of solid stainless steel makes it very heavy. A bad thing IMO.
The ideal setup is a modified stock shifter to maintain low weight while reducing the throw. Just my opinion (and I've tried many shifters).
All else being equal, a heavier shift **** will have 2 effects:
1. During the shift, it will reduce the force-feedback into the hand, caused by the mechanism's spring-loaded ball detent. This, to many, will be perceived as a "smoother" shift.
2. It will create more momentum in the shift mechanism which causes higher impact forces on the sliders and synchros.
One really never gets something for nothing in the engineering realm. I would opt for the lightest possible **** myself.
As far as short shifters, reducing the throw will reduce the impact forces. A good thing IMO.
Machining out of solid stainless steel makes it very heavy. A bad thing IMO.
The ideal setup is a modified stock shifter to maintain low weight while reducing the throw. Just my opinion (and I've tried many shifters).
12-30-2002, 02:57 PM
#7
AudiWorld Super User
so will your #2 offset the reduction in impact forces from the changed pivot point?
which was what i mentioned in my last paragraph.
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12-30-2002, 04:44 PM
#8
Yeah I think your solution is really nice. Although, I like Innovators better (easier for me).
I chopped an inch off which equates to a noticeable difference in throw IMO. Then threw the RS4 **** on which was quite a bit heavier than my stock shifter.
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