2010 TRIUMPH THUNDERBIRD Vehicle Speed Control Problems

TURNING RIGHT FROM A SIDE STREET ONTO A MAJOR ROAD, I BEGAN ACCELERATING AND THE THROTTLE BECAME INOPERATIVE, SNAPPING IMMEDIATELY BACK TO IDLE SPEED. SUBSEQUENT TURNING OF THE THROTTLE GRIP HAD NO EFFECT. THERE WAS TRAFFIC ON THE MAJOR ROAD THAT FORTUNATELY WAS ABLE TO SLOW DOWN IN RESPONSE TO MY UNEXPECTED AND SUDDEN LOSS OF SPEED. THE ATTACHMENT FOR THE THROTTLE CABLE SNAPPED OFF OF THE THROTTLE GRIP ASSEMBLY. MY GRIPS WERE AUTHENTIC OEM TRIUMPH ACCESSORIES - HEATED GRIPS. APPARENTLY, THIS IS A NOT AN INFREQUENT FAILURE. TRIUMPH HAS SUPERSEDED THE ORIGINAL ACCESSORY KIT WITH A LATER PART NUMBER, BUT COULD NOT TELL ME IF THE SUPERSESSION INVOLVED A MATERIAL OR DESIGN CHANGE FOR THE THROTTLE GRIP ASSEMBLY. THE THROTTLE OPERATED PERFECTLY AND THEN FAILED WITHOUT ANY WARNING. THERE WAS NO EXCESSIVE FREEPLAY IN THE THROTTLE LINKAGE, NOR DID IT BIND IN ANY WAY PRIOR TO THE FAILURE.

WHILE TRAVELING DOWN A LONG STEEP INCLINE AT APPROXIMATELY 40 MPH,AND DOWN SHIFTING TO SLOW THE MOTORCYCLE,THE MOTOR STACK FIRED THRU THE THROTTLE BODIES AND QUIT FOR NO APPARENT REASON. AS LUCK HAD IT,THERE WAS NO TRAFFIC ON THE ROAD AT THE TIME. HOWEVER,IF I HAD TO ACCELERATE AT THAT INSTANT TO AVOID ANOTHER VEHICLE,IT WOULD HAVE CREATED A TENSE SITUATION TO SAY THE LEAST. WHEN I GOT CLOSE ENOUGH TO THE BOTTOM OF THE HILL,I LET THE CLUTCH OUT TO RESTART THE MOTOR WHILE THE MACHINE WAS STILL MOVING AND WAS SUCCESSFUL. ALL WAS WELL AFTER THAT AND THE PROBLEM HASN'T OCCURRED SINCE. THIS WAS THE FIRST TIME THAT THIS HAS HAPPENED, BUT GIVES YOU A LITTLE RUSH AS FAR AS CONTROL OF THE VEHICLE GOES. I UNDERSTAND OTHERS WHO OWN THE SAME MOTORCYCLE ARE HAVING THE SAME PROBLEM. *TR

I WAS DRIVING MY 2010 TRIUMPH THUNDERBIRD MOTORCYCLE TO WORK AND THE ASSEMBLY THAT ATTACHES THE THROTTLE CABLE TO THE THROTTLE GRIP FROZE. I HAD NOT THROTTLE CONTROL AND HAD TO COAST THE BIKE TO A SAFE STOP ON THE LEFT SHOULDER OF A HIGHWAY. THIS WAS THE SECOND TIME IN A YEAR THAT THIS HAS HAPPENED. THIS IS A KNOWN ISSUE OF THE FACTORY HEATED GRIPS. AFTER REPEATED HEATING, THEY GET BRITTLE AND THE ATTACHMENT TO THE THROTTLE CABLE BREAKS. THIS IS THE SECOND TIME THIS HAS HAPPENED TO ME IN A YEAR. WHAT WAS PARTICULARLY SCARY ABOUT THIS INCIDENT IS THAT MY THROTTLE WAS STUCK IN THE "OPEN" POSITION AND I HAD TO TWIST THE GRIP REALLY HARD TO GET IT UNSTUCK, WHICH BROKE THE ASSEMBLY. THANKFULLY I WAS ABLE TO PULL OVER SAFELY. THE FIRST TIME THIS HAPPENED, TRIUMPH REPLACED THIS UNDER WARRANTY. THE SECOND TIME, THEY...