Hi all. I'm new to the whole mountain biking seen although I've always tinkered with BMX bikes. I'm a major 4wheels and decided it would be a good thing to pickup a mountain bike for those days I didnt feel like filling my tank to hit the fullsize trails. Plus since getting my license I've become alot less active so back on a bike i go.
I bought an 02 or 03 or 04 Specialized Hardrock with no disc's off my dad who got it so it could sit in our basement for 3+ years. So now I'm in the process of making it mine. I want to convert it to a 7 speed for the simplicty and to remove one more factor of failure in the driveline. It has Truvativ X-Forge cranks on it which I am pretty happy with.
Now my original thoughs were that I was going to pull the cranks, get a spacers and throw a bmx sprocket right on since the crank arms dont branch out to the sprockets on there now and seem like they just pinch it like a traditional bike. A friend of mine that works at a bikeshop with a few knowledgable guys said that not only would I need a specific sprocket bt also 2 chain guides to replace the de-railer to ensure my chain wont just flop off my sprocket.
Anyone have any input or a write up on the precedure to change to single sprocket? I figure it will be alot like an SS conversion but just doing the front end of the driveline.
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Thread: Converting my 21 speed to a 7
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