Harley Davidson Engine Vibration

The swingarm of this bike in fact is rigidly linked to the engine as in many other motorcycles and they are connected to the frame by elastic supports.

Harley davidson engine vibration. Harley-Davidson issued service bulletin a while back that changed the procedure for tightening the compensator nut after a spate of bikes had problems with this nut working loose. It is smooth downshifting above 2k rpm but when decelerating off the throttle and engine breaking in the 1500-2000 rpm range there is a lot of vibration. Owners have experienced wobbles which lead to a loss of control of the bike.

A loose compensator nut therefore is one potential source of engine vibration. With all these problems Harley decided to finally discontinue the Night Train in 2010. The most important cause we found was due to the design of the Harley-Davidson crankshaft.

Harley Davidson rigid mount vs rubber mount. Pistons in Big Twin engines share a single crankpin causing the pistons to move in uneven intervals. The vibration of the engine reduces and the Harley Davidson motorcycles become very comfortable and smooth to ride especially at highway speeds.

If it does not go away then it is not engine related. This new exhaust has thrown the engine way out of tune and the carbs need to be re-set up as the bike is now running very weekyou will burn a hole in a piston very soon if you dont re-tune itthis could also be causing some if not all of the vibration your getting but check the sprokets are running true life the rear of the bike clear of the ground and spin the rear wheel if you feel or here a grinding sound its the. Get up to speed when the vibration starts then get off the throttle and then disengage the clutch.

Harley-Davidson motorcycles especially older models vibrate because of their engine design. It has an enormous amount of Torsional Vibration and Torque SpikeTorque Spike happens each time the airfuel mixture inside the combustion chamber is ignited. Come join the discussion about performance modifications troubleshooting builds maintenance classifieds and more.

The 30-degree offset creates a 90-degree firing order that produces a smooth power delivery especially at higher rpm and the power pulses of a 90-degree firing order may improve traction in some off-road riding situations. When accelerating though the gears and decelerating back down if the engine rpms gets below about 2000 rpms youll feel the vibration. With a 30-percent stiffer frame and a 90-percent reduction in engine vibration the Heritage along with the rest of the 2000 Softail range was a revelation exceeding all expectations.