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#1
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newbie Group: Members Posts: 14 Joined: 11-December 09 From: Western Pennsylvania Member No.: 7,372 ![]() |
I have a new G-Force G5R transmission that I started using this summer. I have found the tranny likes lots of RPMs when using the clutchless upshifting. I'm able to do that pretty good but I have issues when trying to do a clutchless downshift. The clutchless downshifting was one of the reasons why I went with a dogring tranny because I'm not very good at heel-toe (rolling the foot). I now use the clutch everytime when down shifting (still trying to figure out the rpm match). I do shift the gears very quickly and the engine is only a 10.6:1 compression ratio.
I've talked with the manufacture regarding the downshifting. Anyone who uses a dogring tranny shed some light on how they do a clutchless downshift ?? Thanks, Brian |
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#2
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Experienced Member ![]() ![]() ![]() Group: Advanced Members Posts: 1,038 Joined: 29-December 03 From: Texas, USA Member No.: 62 ![]() |
Waiting as late as possible to downshift is the first step. I don't shift until a moment before I'm ready for the gas. This means I'm not downshifting and using the clutch to slow the car, this means during hard braking I'm solely focused on the braking and I'm much more consistent, and this means I'm not unnecessarily revving the motor which would mean more wear/heat. I'll jump from 4th to 2nd if the corner warrants it and never go to third. The last thing waiting so late does is that it means the rpms are down which means the rpm gap between gears is much smaller which means it is much easier to downshift smoothly. I am a left foot brake-er and I rarely use the clutch on downshift, but I'm typically at the slowest part of the corner so I'll only need a very slight blip on the throttle as the next gear down is selected. Since I'm going slower the chassis upset is less if I don't get it perfect, and really, in the next moment I'm planting the loud pedal to get out of the corner anyway, so I'm ready and positioned for it.
That's how I do it...works for me. https://vimeo.com/50276092 Starts a little slow, but gets going at 3:25. Jerico box. Costas cars and such... |
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#3
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Experienced Member ![]() ![]() ![]() Group: Advanced Members Posts: 2,038 Joined: 3-March 10 From: Huntersville, NC Member No.: 9,105 ![]() |
Waiting as late as possible to downshift is the first step. I don't shift until a moment before I'm ready for the gas. This means I'm not downshifting and using the clutch to slow the car, this means during hard braking I'm solely focused on the braking and I'm much more consistent, and this means I'm not unnecessarily revving the motor which would mean more wear/heat. I'll jump from 4th to 2nd if the corner warrants it and never go to third. The last thing waiting so late does is that it means the rpms are down which means the rpm gap between gears is much smaller which means it is much easier to downshift smoothly. I am a left foot brake-er and I rarely use the clutch on downshift, but I'm typically at the slowest part of the corner so I'll only need a very slight blip on the throttle as the next gear down is selected. Since I'm going slower the chassis upset is less if I don't get it perfect, and really, in the next moment I'm planting the loud pedal to get out of the corner anyway, so I'm ready and positioned for it. That's how I do it...works for me. https://vimeo.com/50276092 Starts a little slow, but gets going at 3:25. Jerico box. Costas cars and such... That was an awesome video!!! |
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