This forum seems like a wealth of knowledge so I would like to draw from it if possible. I replaced my stock 42 tooth rear sprocket with a 43 tooth rear sprocket. I am happy with the modest performance gain but would like to add a new chain one or two links longer, I want to run the rear tire as far back as it will go and still be able to adjust the tension correctly.
What do I need to replace the stock chain (Chain Break/Rivet tool) and new chain I presume? Any thing I am missing.

Thanks

 

If you run a new chain "all the way back" you leave yourself no room for adjustment. The chain will stretch and you'll have nothing to adjust.

 

I'm assuming you want a longer chain for a bigger sprocket?

 

Yes, I am looking to run the rear wheel as far back as possible with the 43 tooth sprocket. What I mean by as far back as possible is with proper chain tension and a little room to adjust for the stretching of the new chain.

 

You can probably only add one tooth and still allow yourself some adjustment for the inevitable stretching that will occur.
Seems like a waste to swap out a perfectly good chain just to get an extra tooth, so that you can gain 3/8 of an inch in wheelbase length...
I know what you're going for, but it doesn't seem worth the $$$. Howcome you want to increase the wheelbase by that small amount?