"so there is no need for two" This is the only part that is opinion, and should have been left out. I have been riding the bike for several thousand miles now, with no problems. I have a good grasp of mechanical things, it is my profession. IN MY OPINION, the other cable serves no purpose, and could actually be dangerous if it were to bind, not allowing the throttle to close. Yes, the other cable could bind as well, but the throttle won't work without it. I just keep mine well lubed, and check it's condition frequently. I AM NOT SUGGESTING ANYONE ELSE REMOVE THEIR'S. If they choose to do so, it is their choice, and they accept any and all responsibility for it.
Just like I have proven the right front brake is not necessary for ME to ride safely, and removing it actually makes modulating the brake easier, I still don't recommend anyone else doing it. Just because it works for ME doesn't mean it works for everyone else.
However, I do have to take exception to the way you put it. Many members here are running K&N filters, removing the "goats belly", punching out the baffles in their pipes, and even running car tires on their bikes, all of which I recommend against. But recommend is all I can do, it's their bike, and if they want to do it, they are going to do it. With two different bikes, I have proven that the stock Vulcan 750 can be very reliable, and rack up a lot of mostly trouble free miles, with only a couple of exceptions which almost everyone here knows about (I'm talking about the splines and the accts) Absolutely nothing else has caused me any problems on my bikes, including all of the modifications I have made.
Anyway, as far as the throttle cables, it is up to each individual owner what they want to do. I did what works for me. I have never had a throttle failure on this bike.
EDIT: "I will report back after I have time to dive into the bike more and find out what happened and why the throttle stuck open, in theory it should have closed like everyone has said even if the cable broke seeing as that's what the return spring at the butterflies is for...."
The problem with a dual cable throttle setup, and this is my opinion based on my mechanical knowledge, is that if the second cable breaks, frays at break point, and gets stuck in the housing, or gets stuck in the housing for any other reason, like corrosion or lack of lubrication, it will prevent the spring from closing the throttle. Now, it is also true this could happen to the primary cable as well, the one that actually pulls the throttle open against spring tension. But it seems to me that having two cables doubles the chances of this happening. I only have the "pull" cable on my bike, and keep it well lubed and adjusted. Theoretically, if it breaks, the spring will close the throttle. The exception is if it gets stuck with the throttle open. Not likely, but possible. I have had the throttle stick open on a couple of different bikes during the past few decades, just like with Toyotas. Both were due to worn or broken parts which should have been checked. I've gotten more picky about that.
As I said above, I won't get into the one cable vs two thing, but either way, if the throttle stuck, my immediate response would have been to hit the kill switch while applying both brakes while steering the bike off the road if possible, all while not touching the clutch lever. Under the circumstances, I probably wouldn't have even thought about the clutch. Yes, I would have come to a bumpy stop with the clutch out and the bike in gear, but that is what the MSF recommends, and what I have conditioned myself to do, and have done successfully a couple of times before. Ideally, with the kill switch and engine off, you should pull the clutch in just before stopping, to avoid an abrupt stop, but if you are otherwise occupied with the situation, that is not critical.
I am a motorcyclist, NOT a biker.
1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike
Last edited by VN750Rider/Jerry; 11-15-2011 at 06:15 PM.