Good Evening everyone. I have had my 04 Dyna SG for about 2 months now It has Screaming Eagls IIs and SE High Flow A/C. I installed the Power Vision I got and flashed the preloaded map that Fuel Moto installed on it for me. I have had vibrations for a while now (even before the power vision). The vibrations start at around 2800 rpm and i can feel it everywhere handlebars footpegs etc.
It kinda feels like an electric tooth brush if that makes any sense.

Any help in solving this would be much apreciated

 

I have a 2011 Superglide Custom and my hands vibrate so much they are numb after about 30 miles. I've had other Harleys including a 2008 Street Bob(basically the same bike) and none of them ever made my hands go to sleep. I'm thinking I need to figure out how to keep the vibration down on this bike.

 

A couple of fixes for the Vibe prob. There are several others.

I had the same problem real bad on my 2011 FXDB and the dealership couldn't fix it.. There are a few ways to help this problem: First Buy the HD service manual for your bike. It outlines a couple of the following steps in more detail and you'll need it for other things anyway.

1) Loosten the motormounts, start the motor and run for 10-20 seconds. This repositions the motor in the frame if the mounts were slightly twisted, torqued or under tension - causes of vibration. Tighten the motor mounts to spec, check the adjustable link between the cylinders on the left side for tension, adjust to where there is none, tighten, than check the alleignment with the rear break disc - per the manual - you're really going to need a manual.

2) the engine is rubber mounted so is flexible with respect to the frame. It is more than possible that it was not lined up at the factory correctly to the frame and rear suspension. The process for doing this is in the manual, and I'm not a sexatary so am not going to type it all out. The motor in my bike was out of alleignment and shook so bad I couldn't tell what was behind me in the mirrors. This fix cut the vibes in half.

3) Finally, and this is not in the manual, Loosten the front 2 socket-head motor mounts bolts which connect the rubber mount to the front of the frame between the down tubes. If you support the engine you can take these out - you will then see a pretty good gap between the rubber motormount still attached to the engine, and the frame plate where you just loostened or removed (advisable) the socket head bolts. The bolts, when tight "stretch" the motormount putting it in tension. We need to get rid of that tension by closing the gap and allow the rubber mount to be relaxed when torqued. The gap on mine was 5/32". I had a machinest friend make an aluminum plate with the holes correctly drilled in it. I greased the plate, and oiled the motormount to make the snug installation easy and slid the plate in place. Had to go to a hardware store and get bolts 1/4" longer than the ones I took out. Replaced the bolts, torqued to spec. and had a much smoother Dyna. Not perfect but I could tell a VW bug from a Grayhound in the mirrors and if not pulling real hard in a high gear, their license plate can be seen. I put on 14000 miles tripping last summer without monkey butt.

Additional ideas, some seriously good ones, are in an article by Donny Peterson in American Iron Mag. June 2012. Get it, it's worth it, you'll probably want to subscribe. This man has forgotten more about Harleys then most folks will ever know. He also wrote a book on the twin cam and other Harley motors - but thats another story.

Good luck - Snarv.

 

Maybe the front motor mount. Might try searching on that.