Question about Harley Davidson FXD Dyna Super Glide Motorcycles
I have a 1996 DYNA FXDS and noticed that the other day it was vibrating so much that the custom mirrors I had put on it were shaking so badly I thought the mirrors were going to fall right out! This was at idle too. The bike is smooth once she gets going and seems to be worse after heating up. I was in a traffic jam for over 20 min though and no the EVO was very very hot as no air was passing over it. I checked the motor mounts except rear one. They are all original....17 yrs old. Any ideas? Thank you for the help.
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.
Posted on May 05, 2013
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Posted on Jan 02, 2017
Harleys sure do some shaking. I would guess it has an issue with an engine mount either loose or worn out. I would try another dealer if one is near you.
Posted on Nov 07, 2009
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.
BTW: I've got a '94 Wide Glide. I love it. Wouldn't trade it for a brand new Softail.
Posted on Jul 05, 2010
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