Question about 2007 Yamaha Road Star
I have a vibration in the motor same as all roadstars ,just like to know were its coming from and can i stop it thanks Rod
Vibration, like engine noise, is a very subjective observation or condition and does not translate well in written text. It is something that has to be heard and experienced to be able to truly make an accurate and meaningful assessment.
That having been said, I will attempt to respond to your inquiry, based on my experiences with the Road Star.
First of all, it is a BIG V Twin engine that is not in harmonic balance at all. The very nature of the engine guarantees it is going to vibrate. Yamaha, along with about everyone else marketing a V twin, knows it and embraces it, as they market it as "character" of the motorcycle,
You have two pistons about the size of coffee cans running up and down inside your cylinders. When they go up and down, they create vibrations.
The cylinders do not fire 180 degrees apart either. They fire in a syncopated rhythm and that too generates vibration.
Yamaha has engineered the engine so that at common RPM's, such as highway speeds, the engine is smoother. This is an incredibly sophisticated piece of engineering to get the vibrations to cancel each other out, to a degree. The thing about that is, it is very much RPM dependent. It only works in a very narrow RPM range to generate the counter acting vibrations that yield the smoother, vibration canceling frequencies.
About the only thing you can do is maintain a good state of tune on your engine. Make sure the engine mounting bolts remain tight, and find the RPM's where the engine is the smoothest and try to ride it in that RPM range as much as possible.
Think about other engines, especially ones that are considered smooth. They are usually at least 4 cylinders, if not 6 or 8, because the more power pulses generated, the smoother the engine runs. Also, many are fitted with counter balancers that help cancel vibrations as well.
It is obviously not practical to add cylinders or counter balancers to your engine.
As long as you are describing vibrations that you say are common to the Road Star, it is doing what it was designed to do, and there is little if anything that can be done to alter it.
Posted on Oct 05, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jan 14, 2014 | Audio Players & Recorders
Mar 19, 2012 | 2002 Yamaha Road Star Warrior
Feb 27, 2012 | 2007 Yamaha Road Star
Sep 06, 2011 | Audio Players & Recorders
Jul 04, 2011 | 2002 Yamaha Road Star Midnight
Aug 03, 2010 | 2004 Yamaha Road Star Midnight
Apr 16, 2010 | 2005 Yamaha Road Star Silverado
Jul 01, 2009 | 2007 Yamaha Road Star
654 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: