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Join Date: Nov 2007
Location: Chandler, Arizona
First of all there is no such thing as a "suicide shifter" What you are likely referring to is known as a jockey shifter. Definitely NOT a good idea on a Vulcan 750. The internal shift linkage on these bikes is very weak and easily broken. Putting anything on the shift shaft that has any weight to it is a bad idea. You should even keep your foot away from the stock shifter when using it. I had 2 Goldwing transmissions fail because when I bought them, they had heel and toe shifters. I immediately replaced them with stock shifters, but the damage was already done. What happened was the previous owners had rested their left foot on the shifter instead of putting it on the floorboard. That kept a constant preload on the shifter, and due to the design of the Goldwing transmission, caused 2nd gear to fail. Both bikes started popping out of 2nd gear under acceleration. Harley transmissions hold up better to this kind of thing, Japanese engines/transmissions are much more intricate and fragile for the most part.
There is such a thing as a "suicide" clutch on a motorcycle. The word refers to a foot operated clutch. Most bikes I've seen with jockey shifters have a hand clutch mounted on the shifter handle.
Hopefully you have checked/replaced the cam chain tensioners and checked/serviced the final drive splines. Both are very common and very expensive failure points on the Vulcan 750.
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