Taken 2007 Dyna in twice in 2 weeks for excessive vibration.Dealers says all OK. Bike still shakes bad even at idle. Dealer says mounts OK. I beg to differ. This bike ran like a dream for 3 years. This was all of a sudden problem

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

17 years is a long time for engine rubbers on a v twin. But if the vibration is only in the handlebars, you might want to fit some heavier handlebar end weights. They are there to absorb vibration(they act as dampers.) But, if the vibration is in the engine, it may be worth checking the ignition timing. On a Big V the ignition only needs to be out by a small amount to set up a noticeable vibration.

Have the van put on a car lift and see if any part is "grounding out on the frame or body of the car, this can be bent exhaust parts or broken engine and transmission mounts or broken vibrations insulation pads on the sub frame.

Ok, the Dyna series bikes have rubber mounted engines but the mounts have a tendency to only absorb the higher frequency vibrations. When the engine is idling or running at RPM's lower than about 2000, you can feel the engine vibrations. I have a 1994 FXDWG and it does the same thing. This is normal for all engines with rubber motor mounts. However, since the bike has quite a number of years on it, it would be a good idea to check the mounts and the stabilizers to see if they might need replacement.

Good Luck
Steve

the touring models are going to vibrate or more so shake at and idle more than your softail.the one major difference in your twin cam "B" engine and twin cam 96" A engine is that the softail is counter balanced in the crank case and is also a solid mount engine. straight engine to frame.these two counter balancer's are chain driven off of the crank. the street glide has three rubber mounts on it, one being in the front where the wish bone or down tubes turn inder the bike and two in cleave blocks that are alighned by small pins to be located in the correct position the swing arm also uses these in mounting the swing arm. so you will notice at around 75 mph to 80 mph you may get a "rider known death wobble" (just slow down) there are after market braces in all ranges of price to solve that problem. the more expensive the better it will last and work.

Ok, that's better. This is an engine that has run well before but now something is wrong.

I could be a magnet on the stator but usually they'll make a loud knocking noise. But one magnet could have come loose and simply moved. The only way to find out is to pull the primary and the stator. It's much easier to do on that bike than it is a Shovelhead in that you do not have to pull the inner primary. If you find this to be the problem and you replace the rotor, make sure you check the rotor for good magnetism. Don't laugh, we installed on a few weeks ago and the alternator would not generate any electricity. Turned out the rotor magnets didn't have enough magnetism. You could tell by holding a screwdriver to the magnets, the new one just didn't hold the screwdriver like it should have. Installed the old rotor, everything was fine. Harley had a problem with a batch of them and they don't know where they're all at so check it out before you install it.

Also, with that many miles on the bike, you need to check the motor mounts, both front and rear. The rubber will seperate from the metal parts of the mount. Check the upper stabilizer link as well. Check the primary chain adjustment as well.

As long as the engine is running properly and not making a noise or missing, this is the only thing I can think of at the moment.

Good Luck with it.
Steve

BTW: I've got a '94 Wide Glide. I love it. Wouldn't trade it for a brand new Softail.

I have a 2007 street glid eand have been through 2 sets of fairing brackets. it started with around 500 miles on the bike. very bad design, I had the factory bracket reinforced and problem solved. My old mans bike, same problem. Check the fairing brackets,

I'd check the motor mounts. The front mount is easy to get to but the rear isn't quite so easy. I'd check the front mount and the top engine stabilzer.

I assume that you've owned this bike long enough to know how it should feel. The Dyna series has rubber engine mounts. They do a very good job of dampening engine vibration once the engine gets up in it's rpm range. When the engine is idling, the vibrations can be felt then. When accelerating, you can feel some vibration but it should be bad.

Check your engine mounts and your primary chain adjustment. If it's something to do with the fuel system, I'm afraid that a dealer is going to have to check that for you. Good Luck!

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.