jacksbike

Thanks to all who replied. I figured that it would be a problem because I have had previous problems with SRAM grip shifters not working with Shimano rear derailleurs ( pull ratios). I am fully aware that Suntour made very many different freewheels with different spacing. I know that I can use friction thumb shifters but I would rather use indexed. Most likely the solution is to use 7 speed grip shifters and change to Shimano indexed rear derailleur, front derailleur and , most importantly, shimano indexed and correctly spaced freewheel. I do not believe, in this case, that I would have to change the SunTour XCM triple chainwheel set, but I am open to opinions on that also.