rectifier is inside the engine, depending on your knowledge, its the same as a cars alternator (sorta). here is the very simple (and maybe even wrong) explination. The rectifier makes the new electricity for your bike, recharges the battery after its started the bike, keeps the lights going and powers the spark plugs.. the voltage Regulator makes sure nothing gets to much power. the faster you go the more power is made, the regulator changes it to a steady useable power.
Think of it like your garden hose. with no end on the hose with it turned on full the water all just runs out as fast as the hose will allo,. then put a nozzle on it, you can make the water come out just how you want.. slower, faster. The rectifire makes the water, the regulator changes how much.
the rectifier isnt to bad hard to change if it fails, the problem is the bike engine needs to be tipped, so you need to basicly act like your taking the engine out, you have alot of bolts to losen or remove. Basilcy more work then the Voltage regulator. but you said it yourself, these are parts that have failed enough people have fixed, asked lots of questions about um.. but Nobody asks questions about parts that work. While these parts have failed, it sure doesnt mean they will for you.
With all that said, here is one way to look at it. NO BIKE doesnt have its quirks, you wont find any that wont require some strange process for something. Unless you buy somthing with a warrenty, they all have somthing just like the volatage regulaor on the Vulcan, its just something else.
Again, be aware, but dont let this stuff stop you, a different bike will have parts that are known to be "check um before you buy" also.
As I said 21,000 on mine and nothing but normal mantinace.. tires, brake pads, oil changes. And when checked over by a bike mechanic I was told its in great shape.. Yours is 9 years newer.. you probebly wont have a problem with anything for ages....
When i was looking for a bike I used a Motorcycle buyers guide webpage (sorry cant remeber address here at work) which had user reviews and proessional reviews. the Vulcan was said to be a VERY solid long lasting bike. And i read the same everywhere i could find.
Last edited by clok1966; 04-22-2010 at 04:05 PM.