New The Laycock De Normanville Overdrive
Invented past times Edgar de Normanville, together with manufactured past times automotive supplier Laycock Products, the unit of measurement basically consisted of a solenoid-activated planetary gearset residing betwixt the measure manual transmission together with driveshaft, offering a reduction inward gear ratio at the driver’s command.
At the press of a push clit or flip of a switch (depending on the car) inward the cockpit, the overdrive would engage together with lower the engine speed relative to the driveshaft, markedly improving fuel economy.
Advantages? Transmission evolution has e'er been pricey, together with equally fuel economic scheme began to cash inward one's chips a priority for automakers, the persuasion of a fuel-saving external summation to an existing 3- or 4-speed manual transmission was an appealing one. Not exclusively that, but the nature of the Laycock Overdrive meant that it could live on engaged at whatsoever time, fifty-fifty inward the lower gears, effectively doubling the position out of ratios at a driver’s disposal. H5N1 4-speed tranny became an 8-speed, for instance.
As all-in-one 5-speeds amongst integrated overdrive became de rigeur, the Laycock Overdrive faded from the scene.
At the press of a push clit or flip of a switch (depending on the car) inward the cockpit, the overdrive would engage together with lower the engine speed relative to the driveshaft, markedly improving fuel economy.
Advantages? Transmission evolution has e'er been pricey, together with equally fuel economic scheme began to cash inward one's chips a priority for automakers, the persuasion of a fuel-saving external summation to an existing 3- or 4-speed manual transmission was an appealing one. Not exclusively that, but the nature of the Laycock Overdrive meant that it could live on engaged at whatsoever time, fifty-fifty inward the lower gears, effectively doubling the position out of ratios at a driver’s disposal. H5N1 4-speed tranny became an 8-speed, for instance.
As all-in-one 5-speeds amongst integrated overdrive became de rigeur, the Laycock Overdrive faded from the scene.
The mill installed the Volvo M46 4-speed + overdrive transmission on Volvo 240s together with subsequently 740s
Until the belatedly ’80s, the Laycock Overdrive was fitted to a broad multifariousness of cars, non simply Volvos: Jaguars, MGs, Austin Healeys, Alpines together with Triumphs, amid others, were available amongst the unit.
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