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Join Date: Nov 2007
Location: Chandler, Arizona
First of all, with the Vulcan 750, your only option would be to replace the shocks with solid struts. This would allow you to lower the rear, since you would no longer need room between the tire and fender for suspension compression. I won't get into what a hardtail will do to your back, or the rest of your body, I'm sure you already know that, and are willing to accept the consequences.
But here is something else to think about. I don't know whether this applies to the Vulcan 750 or not, but it does apply to some bikes, and definitely to the Rebel 250 (yes I have one, and belong to a Rebel forum) The Rebel's shocks are mounted several inches from the rear end of the swing arm, and the swing arm is very weak. It was not designed to be used without suspension. So when you remove the suspension, all the shock loads go directly into the end of the swingarm. The weakest point on the swingarm is where the shocks mount, and after a few hundred to a few thousand miles (depending on rider weight and how bad the roads are) the swingarm will crack and break along the bottom edge, right behind the shock mounts. This MAY not apply to the Vulcan 750, because the shocks are attached much farther back on the swingarm, they have a lot less of an angle to them (more straight up and down), and the swing arm appears to be quite a bit stronger. Nevertheless, when you remove the rear suspension, you are going to drastically increase the stress on the swingarm. Not being an engineer, I have no idea whether the Vulcan swingarm can handle it or not.
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