Does a 750 have alot of vibration, I finally got my camera mount in and it seems to vibrate more then any other videos I have seen with that same type of mount. Also thought it was just where I hadn't ridden in alil bit, but my hands seem to get alot of vibration in the handle bars while I'm riding.
I don't think it's normal, but does anyone have a clue to what might be causing it, I'm taking it by the dealer I got it from tomorrow.
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Re: bike vibration
Simply, it might just be the road... But, is it like a constant vib. that get worse as speed increases? And...what have you done with the motor that might have caused anything to go wrong? (i.e. kept it in a low gear at very high RPMs for a long period of time) Give me some clues...
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the only thing spinning and vibrating at idle is the crankshaft, gear box , clutch and flywheel
if the power commander is electronic there may be a fault in it
best place for these faults is a dealer shop as they are aware of these sorts of problems
Um, It's a Harley Product. They all Vibrate ALOT. You could check all the mounts on the bike - between the cylinders under the gastank, on the front of the front cylinder and at the rear of the motor under the battery - look for broken bolts, loose bolts and worn rubber mounts.
I'd have a look at the clutch assembly. Specifically, check the nut that holds the clutch assembly onto the mainshaft. You'll have to take the primary cover off and remove the snap ring from the center of the clutch assembly. The nut is behind the there. It has LEFT HANDED THREADS and torques to 60-80 ft. pounds. If the vibration stops with the clutch pulled in or the tranny in neutral, that's the giveaway. Look for something in that area. It could be the bearing in the inner primary or the bearing inside the final drive gear allowing the clutch assembly to vibrate.
The final drive belt may be too tight. After all, Harley techs are human and make mistakes like everyone else. I've made my fair share of them.
The belt is supposed to be adjusted with the rider on the bike. This is difficult to do in the shop but if there's more than one mechanic, it can be done. Your're final drive belt should have about a 1/2" up an down play in it when a force of 10 pounds is applied to the belt on the lower run of the belt. Some bikes have a "guage" built right into the lower belt guard that looks like a slot with markings on the side. You can purchase one the small tool that applies pressure to the belt at the shop. They aren't expensive. Get someone about your weight to sit on the bike and readjust your final drive belt. If you get it too loose, it will squeak when you shift gears.
You can check for a loose or broken motor mount but you need to consider how the rubber mounts work. The mounts absorb high frequency vibrations. Low frequency vibrations will be felt throughout the machine.
On most Dyna's, the bike vibrates when idling. When accelerating though the gears (and decelerating back down) if the engine rpm's gets below about 2000 rpm's, you'll feel the vibration. Once above this level, the bike smooths out due to the change in frequency of the vibrations. I have owned a '94 FXDWG since new and this is my experience with the bike.
However, if the vibration is very bad, you may need to have it looked at by a technician. You'll have to determine that for yourself.
The carbs should be synchronized every 20k miles. If you are having a roughness in idle then I would recommend the carbs being synched. If the problem is at higher RPM's I'd check to see if the motor has a harmonic dampener that can be adjusted. This often resolves vibration issues. I'm just not sure if this bike has one. These big bikes usually have some sort of adjustable dampening device internally. I'd also like to have you check the motor mounts. This is a common problem if your bike has any rubber in the motor mounts. The rubber wears or even breaks and you often cannot see it until you actually try to remove the mount. Often they will fall apart in your hands. These big motors all vibrate a bit so many of the manufacturers have realized that adding modified motor mounts is helpful.
I have replied already to your other post... didn't see this one... not sure what the vibration through the peg could be caused by as they mount directly to the frame. The frame being a substantial structure to the bike means that the vibration is being created anywhere on the frame,and you are feeling it in your foot peg. The only thing that comes to mind is that perhaps one of the tank mounting rubbers is not seated properly, or inadvertently rolled away on the garage floor. This is what I would be checking for.