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Hib Halverson · 09-05-2016

Though my research on the ZF S6-40 and all the work I did with Red Line Oil, has me wanting to remind everyone that, in the case of the S6-40, making quick shifts is more than just a short throw shifter.

In fact, with just the shifter, anytime you shorten the throw, you increase the effort. There is no way to avoid this directly as shifters, as good as some of them might be, cannot violate the laws of physics.

There are other issues which affect shift effort.

1) Clutch action and clutch type
2) Trans lube and its temperature
3) Trans condition
4) Friction in the shifter

If you don't have all those things right, you can install a short throw shifter and still end up with high shift effort. Many people don't understand that, as shift effort goes up, if you don't have the right shifter and the trans and clutch right, you can get to a point where shift speed is actually compromised by high shift effort, in spite of having a short throw shifter.

When I owned Barney, my Purple 95, I had a McLeod clutch and disc, I had well-maintained clutch hydraulics, my trans was in good condition and I used Red Line Light Shockproof Lubricant. When I bolted a Hurst shifter (originally designed by Zroner, Chris Reinhart and probably the best shifter on the market because of its low level of friction) on my ZF, I ended up with a system that allowed very quick shifts.

09-05-2016	#16
Hib Halverson Join Date: Jun 2005 Location: CenCoast California Posts: 898	Re: Short throw shifter? Though my research on the ZF S6-40 and all the work I did with Red Line Oil, has me wanting to remind everyone that, in the case of the S6-40, making quick shifts is more than just a short throw shifter. In fact, with just the shifter, anytime you shorten the throw, you increase the effort. There is no way to avoid this directly as shifters, as good as some of them might be, cannot violate the laws of physics. There are other issues which affect shift effort. 1) Clutch action and clutch type 2) Trans lube and its temperature 3) Trans condition 4) Friction in the shifter If you don't have all those things right, you can install a short throw shifter and still end up with high shift effort. Many people don't understand that, as shift effort goes up, if you don't have the right shifter and the trans and clutch right, you can get to a point where shift speed is actually compromised by high shift effort, in spite of having a short throw shifter. When I owned Barney, my Purple 95, I had a McLeod clutch and disc, I had well-maintained clutch hydraulics, my trans was in good condition and I used Red Line Light Shockproof Lubricant. When I bolted a Hurst shifter (originally designed by Zroner, Chris Reinhart and probably the best shifter on the market because of its low level of friction) on my ZF, I ended up with a system that allowed very quick shifts.