1996 dyna 12k original miles--has engine vibe @1800-2000 rpm,when warmed up ,most noticeable in 5th gear ,both accell and decell,new mounts front/rear,when I pull-in clutch it stops,does not appear to be in drive line , even tried auto primary chain adj. kit,no change....bike runs great otherwise,local HD tech said all dyna,s have this problem when they break-in..I owned for 7 years ..no problem up to now...seems to be increaseing in intensity..
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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.
Hi Anonymous, and the usual suspects are:
1. Wheels and or tires unbalanced, worn or damaged.
2. Engine/transmission/vehicle not aligned properly.
3. Primary chain badly worn or links tight as a result of insufficient lubrication or misalignment.
4. Engine to transmission mounting bolts loose.
5. Upper engine mounting bracket loose.
6. Ignition timing incorrect/poorly tuned engine
7. Internal engine problem/ flywheel shift runout should be .003" max.
8. Broken frame
Sounds like valve clatter, a common issue. We chased the same noise, with HD installing new push rods, adjustable rods and then they said it is a Harley. Not a real answer. This noise ruines the ride as it grabs your mind and focuses you on the noise.We tried different rod extensions within the lifter adjustment range, same deal. We chased for about 1 1/2 years, trying to not void warranty.
The only long term solution was to go to aftermarket (velvet touch) lifters and lifter blocks. Now we NEVER hear the issue.
The last guy that wrote in here with the vibration problem was told his crank is shot!!! These are fairly new bikes, how do you get a bad crank shaft?? Somebody is screwing up. I was thinking that his cam timing was out of whack so it would miss and cause vibration like a funny car. But he didn't believe that one. Anyway, check it out. You might have to get a new bottom and swap your jugs and heads over to the new engine. Or just part out the old one and get a whole new engine. Hope this helps.
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.
Hi .... This may sound daft but have you recently changed or had the exhaust off ? Have a look at the silencer/muffler rear mounts, difficult to explain but they should be in a 'neutral' position, not fully pushed in. Maybe the vibes are coming straight along the pipes from the engine and through the footpegs.
Let me know how you get on.
I have the same problem with my Roadking except it wasnt dropped. I did a full alignment of rear tire to engine, aligned the rear tire to front tire, aligned the engine and replaced the front motor mount. Nobody seems to have an answer, that I've talked to anyway. If you find a cure let me know, If I find one I'll let you know.
ry useing blue LOCTITE on the pinch bolts and other fasteners to keep the shifter from vibrating loose again. I had the shift linkage vibrate loose on my Thruxton when it was new, I had to fix it on the road to get home.