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Gear inches is one way of measuring the gear ratio(s) of a bicycle, so that different gears and different bicycles can be compared in a consistent manner. Gear inches is an imperial measure corresponding to the diameter in inches of the drive wheel of a penny-farthing bicycle with equivalent ( direct-drive ) gearing.
One standard option for the Brompton folding bicycle is to use a 3-speed hub gear (roughly a 30% difference between gear ratios) in combination with a 2-speed derailleur gear (roughly a 15% difference) to give 6 distinct gear ratios; this is an example of half-step gearing. Some Brompton suppliers offer a 2-speed chainring 'Mountain Drive' as ...
Profile of a spur gear Notation and numbering for an external gear Notation and numbering for an internal gear. The tooth surface (flank) forms the side of a gear tooth. [1] It is convenient to choose one face of the gear as the reference face and to mark it with the letter “I”. The other non-reference face might be termed face “II”.
The National Hot Rod Association (NHRA) is a governing body which sets rules in drag racing and hosts events all over the United States and Canada.With over 40,000 drivers in its rosters, the NHRA claims to be the largest motorsport sanctioning body in the world.
Typical ratios would be 22/32/44 teeth as opposed to 28/38/48 or 24/36/46 teeth. These would be used with smaller cassettes (Generally cassettes are available with 11 tooth minimum gear sizes for compact chainsets while standard chainsets were designed for cassettes with a 13 or 14 tooth top gear), giving the same overall ratio.
'Rollout' is the distance travelled by a vehicle before the timing lights on a drag strip are triggered. … can affect the final run time by up to 0.3 of a second. … important to discount this first foot of movement from the final run time, to ensure that the run time captured by the GPS data logger is as close as possible to the official ...
The Gatornationals have the title of being the drag race to see the first 260-mph Top Fuel and Funny Car runs in 1984 by Joe Amato and Kenny Bernstein respectively, and the first 270-mph and 300-mph Top Fuel passes by Don Garlits and Kenny Bernstein in 1986 and 1992, respectively. Its 675-foot concrete launchpad is one of the longest on the tour.
It was equipped with five direct friction plates. These automatics had lower first- and second-gear ratios, allowing the lower-powered engines to provide better acceleration without sacrificing highway fuel economy. They were frequently used today in drag racing. Uses: 1975-1980 360 (2-bbl) 1984-1989 318 (4-bbl Police)