2007 Yamaha YZFR1

SIGNIFICANT THROTTLE LAG AT 5500 RPM. THE LAG IS ABOUT 3 TO 4 SECONDS THEN THE BIKE STARTS TO ACCELERATE. IN MANY SITUATIONS, THIS LAG AND SUBSEQUENT POWER SURGE CAN BE AN SAFETY ISSUE. POWER DELIVERY CAN COME WHEN THE RIDER LEAST EXPECTED IT. THIS COULD CAUSE THE RIDER TO PANIC OR CAUSE OTHER MOTOR VEHICLES TO MAKE EVASIVE MANEUVERS.*AK

WHILE RIDING IN NORMAL TRAFFIC CONDITIONS IN SECOND GEAR AT 5500 RPM S AT 48 MPH FOR A DURATION OF THREE OR MORE SECONDS AS IF CRUISING AT SPEED, APPLICATION OF THE THROTTLE PROVIDED LAGGING RESULTS. THROTTLE WAS APPLIED, AND THE MOTORCYCLE TOOK A UP TO TWO SECONDS TO REACT. THIS CONDITION IS REPEATABLE, AND THERE IS INSTANT THROTTLE RESPONSE AT 5000 RPMS AND 6000 RPMS IN THE SAME CONFIGURATION. THIS COULD BE AN ISSUE IF A RIDER IS FORCED TO WATCH GAUGES AS OPPOSED TO TRAFFIC TO STAY OUT OF AN RPM RANGE AS OPPOSED TO A POSTED SPEED. FURTHER THIS COULD CAUSE AN ISSUE WHERE INSTANT THROTTLE APPLICATION COULD BE THE ONLY ESCAPE TO AN EMERGENCY SITUATION (I.E. CROSS TRAFFIC DISOBEYING A TRAFFIC LIGHT OR A VEHICLE APPROACHING FROM BEHIND TOO QUICKLY). THIS ISSUE HAS BEEN REPORTED TO THE DEALER WHERE THE VEHICLE WAS PURCHASED FROM AS WELL AS YAMAHA CUSTOMER SERVICE. OTHER RIDERS HAVE REPORTED THE SAME ISSUE (REPEATABLE ON ALL BIKES WITH A US ENGINE CONTROL UNIT TO DATE), AND CURRENTLY, THE MANUFACTURER APPARENTLY DENIES THAT IT IS AN ISSUE.*AK

THE 2007 YAMAHA R1, STALLS FOR NO REASON AT ALL AND IN 2ND GEAR AT 5500 RPMS THERE IS A HUGE LAG AND IT ALSO OCCURS AT 50 MPH, AND WITH SPEED ERROR THAT IS USUALLY ASSOCIATED W/MOTORCYCLES, THAT MEANS THAT WERE ROUGHLY GOING ABOUT 45 MPH, WHICH IS THE EXPRESSWAY SPEEDS IN CALIFORNIA AND IF WE NEED TO ACCELERATE FOR ANY TYPE OF EMERGENCY SITUATION, IT TAKES THE BIKE 3-4 SECONDS BEFORE IT RESPONDS AND STARTS ACCELERATING. THIS IS A HUGE SAFETY ISSUE. AND I OWN 2 OF THESE MOTORCYCLES AND WILL BE DOING 2 SEPARATE COMPLAINTS AS WELL.*AK

THE 2007 YAMAHA R1, STALLS FOR NO REASON AT ALL AND IN 2ND GEAR AT 5500RPM THERE IS A HUGE LAG AND IT ALSO OCCURRS AT 50 MPH, AND WITH SPEEDO ERROR THAT IS USUALLY ASSOCIATED W/MOTORCYCLES, THAT MEANS THAT WERE ROUGHLY GOING ABOUT 45 MPH, WHICH IS THE EXPRESSWAY SPEEDS IN CALIFORNIA AND IF WE NEED TO ACCELERATE FOR ANY TYPE OF EMERGENCY SITUATION, IT TAKES THE BIKE 3-4 SECONDS BEFORE IT RESPONDS AND STARTS ACCELERATING. THIS IS A HUGE SAFETY ISSUE. AND I OWN 2 OF THESE MOTORCYCLES AND WILL BE DOING 2 SEPARATE COMPLAINTS AS WELL.*AK

TL*- THE CONTACT OWNS A 2007 YAMAHA YZFR1. WHILE DRIVING APPROXIMATELY 52 MPH IN SECOND GEAR THE VEHICLE HAD A LOSS OF POWER. IT TOOK APPROXIMATELY 3 SECONDS BEFORE THE VEHICLE WOULD ACCELERATE. THE ROAD CONDITIONS WERE CLEAR. THE DEALERSHIP INFORMED THE CONTACT THIS WAS A NATURAL OCCURRENCE, AND IT WAS A CHARACTERISTIC OF THE VEHICLE. THE CONTACT SPOKE WITH THE MANUFACTURER, AND THEY STATED THE SAMETHING. THE VEHICLE CURRENTLY HAS 3500 MILES. *AK

TL* THE CONTACT OWNS A 2007 YAMAHA YZFR1 MOTORCYCLE. WHILE TRAVELING AT 55 MPH IN SECOND GEAR THE VEHICLE DID NOT ACCELERATE FOR 2 TO 3 SECONDS WHEN THE DRIVER INCREASED THE SPEED. THE FAILURE MILEAGE WAS 5. THE CONTACT STATED THAT THE FAILURE MAY BE RELATED TO THE COMPUTER. THIS WAS A SAFETY CONCERN FOR THE DRIVER WHEN MERGING. NO WARNING LIGHTS ILLUMINATED. THE FAILURE ONLY OCCURRED IN SECOND GEAR. THE MANUFACTURER STATED THE VEHICLE WAS OPERATING NORMALLY. *AK UPDATED 04/05/07. *JB

TL*- THE CONTACT OWNS A 2007 YAMAHA YZFR1. WHILE DRIVING 50 MPH IN SECOND GEAR THE VEHICLE TOOK ABOUT 6-8 SECONDS TO ACCELERATE. THE VEHICLE WAS TAKEN TO THE DEALERSHIP, WHO DETERMINED THAT THE FAILURE WAS DUE TO A MAPPING ANOMALY. THE DEALERSHIP REFUSED TO REPAIR THE VEHICLE ,STATING THIS WAS A NORMAL OCCURRENCE. THE VEHICLE CURRENTLY HAD AN ODOMETER READING OF 2,200 MILES. *AK

AFTER STEADYING THE THROTTLE IN SECOND GEAR, AT 5500 RPM, 48 MPH, AND THEN APPLYING THROTTLE, THE MOTORCYCLE, DOES NOT ACCELERATE PROPERLY, AND LAGS SEVERELY. THE LAG IS SO SEVERE THAT A RIDER RUNS THE RISK OF BEING HIT FROM THE REAR, ESPECIALLY IN A TRAFFIC SITUATION, WHEN MERGING FOR EXAMPLE. THROUGH GENERALIZED RESEARCH, I HAVE DETERMINED THAT THE PROBLEM CAN BE RECREATED ON ANY US VERSION 2007 YAMAHA R1 MOTORCYCLE. THE PROBLEM CANNOT BE RECREATED ON A DYNOMETER. CHANGING THE GEARING, EXHAUST, PCIII, AND OR IGNITION MODULE DOES NOT CORRECT THIS PROBLEM. *JB