Be careful how and whare you say spica . could be politicaly incorrect depending on how a person heres it.Looks like a good find for $20. Why are those shifters called suicide? Seems to me taking one hand off the bars and reaching for the down tube would be more of a suicide move, on motorcycles the shifter on the tank is the suicide shifter.I used that same kind of back derailer to convert an old schwinn to 21 speed , it worked very nice.