Originally Posted by
bikemig
I would not bother trying to get the bike to work with suntour indexing and I'm a big suntour fan. Shimano indexing is better hands down and lots easier to find parts for. I'd get a new 7 speed cassette (they're readily available) and live with friction. If you want indexing, I'd pick up seven speed shimano DT shifters and a shimano rear derailleur. In the long run, this will save you money and give you better shifting.
I agree. Suntour never quite perfected index shifting. Shimano did.
Trying to mix Suntour and Shimano is not worth the effort, in my experience. The result will be no better than mediocre. Others may have had better results.