underdrive

un·der·drive

 (ŭn′dər-drīv′)
n.
A gearing device that causes the output drive shaft to rotate at a slower rate than the engine input shaft.

underdrive

(ˈʌndəˌdraɪv)
n
(Automotive Engineering) a gear in a motor vehicle that works to reduce speed
References in periodicals archive ?
In order to increase maximum engine rotation speed, it is necessary to operate the shifting device in underdrive (Fig.9).
On Friday, Underdrive Johnny will perform rock covers, while on Sunday, Lindley Brass Band and rock 'n' roll band JB Goode are on the bill.
At the Hercules plant in Warren, MI, Rexcon wired and installed controls on a 4,000 ton Danly straight side stamping press with hydraulic cushions and four 1,000 ton underdrive presses.
His original plan was to drive the truck but then he discovered that the T's two-speed Ruckstell rear end is an underdrive, not an overdrive; engaged, it actually slows the truck down.
The nail gun was set using an adjustable nose piece to underdrive the nails approximately 3.2 mm from their final desired depth.
The Sharks jumped out to a 5-1 lead and had back-to-back breakaways early in the third period and should have had six goals, then went into underdrive and barely hung on for the victory playing their third game in less than 72 hours.
The six bands taking part in the final are Bangor band Life Without Rory, The Tides from Magherafelt, Castlerock's Man Over Bored, Catalyst from Belfast, Derry band Tainted Perfection, and Underdrive from Waringstown.
A less restrictive air filter is fitted, as are special underdrive pulleys and a 2 1/2 -in exhaust system.
The two-speed models are four-shaft, constant-mesh designs featuring a declutch mechanism for front axle and underdrive engagement.
Similar laser welding results are achieved by Chrysler in processing the sun gear assembly, overdrive shaft assembly, and underdrive shaft assembly.