THROTTLE VORTEX SILVER, 101-054-6, 101-054-6

THROTTLE VORTEX SILVER. FIR [FACTORY IMAGE RACING]

FIR never refer to our throttles by fractional names (1/4-turn, 1/2-turn or other any other "turns"). How far a throttle fractionally turns is a function of the throttle's "rate" (how much cable inner wire the throttle's drum or cam reels in, versus how far in degrees the tube must be turned to reel it in) and the carb's/throttle body's travel (how much cable inner wire must be reeled in to fully open the carb(s) or throttle body(ies)).

As an example, our fastest throttle, the Vortex, has a rate of 1.90 (the maximum number of degrees turned divided by the maximum travel in mm, 95/50mm of wire travel). Since it has a maximum of 95 to turn, it will never be much more than a 1/4-turn throttle but in any application requiring less than 50mm of travel, it will be less than 1/4-turn to fully open. If only 25mm of travel is required, it will be about a 1/8-turn throttle. The opposite of the Vortex is our CR Pro; our slowest single pull throttle. It has a rate of 2.93, the result of a maximum of 170 turn and 58mm of travel. The rule of rates is simple; the smaller the value of the rate, the faster the throttle will open the carb.

Part No. 12-033.DR.SI [FACTORY IMAGE RACING]   (Distributed by oro2u.com)