Hi Brian. I'm not sure if I understood your message right. You mention I 
should not change my present wheel setup because introducing an 8 speed cog 
would cause a weak wheel  by introducing a longer axle and having the need to 
redish the wheel ...  Then you say that it would be okay to get another wheel 
with an 8 cog and to spread my stays to fit it in. What is the difference 
with using the wheel I have rather than using another wheel? It will need to 
be redished anyways. A longer axle does not render the wheel much weaker. All 
new bikes have longer axle than my 1985 bike. The problem would be with the 
stays I am told by the bike shop. There is so much you can spread them open. 
They suggest switching to ergo by using a new 7 speed cog, new chain and a 
new rear derailleur.
As for why my chain on my 1994 ergo group bike jumps from big chainring to 
the little one every time I hit a major bump is beyond them.
Richard
--- Maximus/2 3.01
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