EVO Vibration

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May 22, 2012 | 02:58 PM

#41

the blob

Road Warrior

Joined: Sep 2006

Posts: 1,570

Likes: 45

My 90 vibes the most at 60mph and smooths out at
70 mph. Id say at 70mph it no worse than my dyna was.

May 22, 2012 | 04:57 PM

#42

Uncle G.

Seasoned HDF Member

Joined: Jun 2010

Posts: 9,332

Likes: 3,873

From: Upstate New York

Quote:

Originally Posted by lionsm13

I looked into these "Balancemasters" years ago and guys that I know that have had them, and afterwords took them out and offered them to me for free say that they are in theory good, but overall do not do much if anything. They have been out for many years and if they had anything worth note, everyone would be on their bandwagon, including HD. Jus' sayin'.

Well, here's one guy who swears by them. When Harley rebuilt my Softail engine back in '02, it shook so badly compared to the original motor that I nearly sold it in disgust. With little to lose, I bought the balance master balancer and installed it on the sprocket shaft. It smoothed the engine right out, just like the old one.

Ten years later, the balancer is still in there, and I'm still riding the bike. It's pretty smooth from 50 up to 75 MPH in top gear.

May 23, 2012 | 08:51 AM

#43

Jethro

Cruiser

Joined: Nov 2006

Posts: 206

Likes: 5

Surprisingly enough, timing has had the most noticeable effect on vibration. I have a 94 fxstc that has Wiseco 10.1 pistons, aluminum pushrods, ev27 cam, along with a six speed transmission and an M-6 chain tensioner in the primary. Rubber isolated handlebar risers, and shaker foot boards. Also, have a saddleman seat with gel inserts. I ride all day, hundreds of miles. No problem. BUT, when I recently finished the top end, I re-timed the bike. Only moved the advance slightly, yet the effect on vibration was huge. If your bike has not ben tuned recently, I would put it on my must do list.

May 23, 2012 | 09:40 AM

#44

Plow64

Stellar HDF Member

Joined: Jan 2007

Posts: 3,447

Likes: 163

From: Northern VA

Quote:

Originally Posted by Jethro

Thanks Jethro. I recently (3 weeks ago) had the heads ported and polished, plus an S&S breather reed valve installed, but did not get the bike tuned. The Bike had been dyno tuned a year prior and was running great. The vibration issue started after the head work and breather reed valve was installed.

Is there a possibility of damaging the engine by continuing to ride it as is?

Last edited by Plow64; May 23, 2012 at 10:03 AM.