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Shifting tip
Found this tip for shifting the Tremec transmission in a Cobra by Olthoff Racing. That 2nd to 3rd shift has bitten me more than once. Great tip!
Olthoff Racing's diving tips on shifting the Superformance Cobra Replica - YouTube |
Great tip. Nice color on the car also.
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I really need to learn how to shift when drag racing. Assuming you start out in first gear and go through the gears without grinding, missing a shift or over-reving the engine. I have a rev limiter, so I'm not going to damage the engine. I've done some power-shifting when I was young and crazy, but now that I'm just crazy..... I've thought about trying to time everything so the clutch is all the way in as I hit the end of the throw for the next gear. Do you still keep your foot on the gas as you shift?
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Sandy, since I changed to the Jordan Shifter my 2 to 3 shift never fails. Also for WardL: I doubt it's wise to power shift a Tremec, unless it is the 3550, and if you power shift a cobra even with a 302 you WILL get in trouble with the whole sideways thing.
AZ Bob |
As with any car that is traction limited and with lots of power, power shifting will just slow you down. When the rear tires go up in smoke, you're not really propelling the car anymore.
With my limited exposure to drag racing street cars 5.0 Mustangs mostly, to C-6 Corvettes, you will get better times by lifting during the shift, because you're not overpowering the car. You still shift fast, just lifting at the instant you depress the clutch. Besides slower times when blowing off the tires between shifts, you can really put yourself in jeopardy (getting sideways in a hurry) when the rear tires no longer have traction. Of course, with lower powered cars it's less of a problem, but you are putting un-necessary stress on the powertrain and can break an axle, transmission, driveshaft etc, and still not go any faster. The rules for professional racing cars are different, no clutch during shifting. They require the right touch on the gas and shifter. You can actually shift any manual transmission without a clutch with the right touch. Just my opinion. |
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Hark! I hear the empty rattling of the Cobraless!
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My left foot doesn't have to do anything after I leave the starting line. A.T. is the only way to go, if you want to go "quick". I know I've lost some of the funfactor of shifting up and down through the gears for road courses, but since I like the huge rush of drag racing, I don't have to worry about how to make the 2-3 shift. Say what you want, for me, instant gratification, is top dog.
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I've never understood what advantage there could be in power shifting. If you can overpower the tyres with a normal shift, what does the power shift give you apart from the car walking sideways a little?
Can anybody convince me? Cheers, Glen |
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Karl, you also don't have to remember left from right that way. It gets so confusing at your age.
AZ Bob |
"Well then how about the ultimate in torque curve and automation, the Nissan Leaf. 100% torque at 0 rpm and an infinitely variable automatic transmission. A little weak in KW's but just think, you'd be so green that those hot eco-feminists would love you! "
Sandy, I'll keep my eye out for "those hot eco-feminists". Bring'um young and Bring'um often. BobB, Left and yer left and yer left right left. Left and yer left and yer left right left. I'll never forget. |
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It's an demonstration of power, nothing more? Cheers, Glen |
Well Ward......
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tin-man |
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