Wow, I must say I am a bit confused. I have totally relied on the Sheldon Brown gear inch calculator and it seems to yield much lower gear inches than that chart or your printout. And with 54/15 regular SA 3 speed:0.75 (Low)1.01.33 (High)[TABLE]
[TR]
[TD][/TD]
[TH="bgcolor: yellow"]54[/TH]
[/TR]
[TR]
[TH="bgcolor: yellow"]14[/TH]
[TH="bgcolor: white"]46.5[/TH]
[/TR]
[/TABLE]
[TABLE]
[TR]
[TD][/TD]
[TH="bgcolor: yellow"]54[/TH]
[/TR]
[TR]
[TH="bgcolor: yellow"]14[/TH]
[TH="bgcolor: white"]62.0[/TH]
[/TR]
[/TABLE]
[TABLE]
[TR]
[TD][/TD]
[TH="bgcolor: yellow"]54[/TH]
[/TR]
[TR]
[TH="bgcolor: yellow"]14[/TH]
[TH="bgcolor: white"]82.6[/TH]
[/TR]
[/TABLE]
[TABLE]
[TR]
[TD][/TD]
[TH="bgcolor: yellow"]54[/TH]
[/TR]
[TR]
[TH="bgcolor: yellow"]12[/TH]
[TH="bgcolor: white"]72.3[/TH]
[/TR]
[/TABLE]
I have found that I can use a 38 chain ring with no adverse effect other than the chain comes off when folding, so I now fold when on the big chainring. This gives the following ratios:0.75 (Low)1.01.33 (High)[TABLE]
[TR]
[TD][/TD]
[TH="bgcolor: yellow"]54[/TH]
[TD="align: center"]42.1 %[/TD]
[TH="bgcolor: yellow"]38[/TH]
[/TR]
[TR]
[TH="bgcolor: yellow"]14[/TH]
[TH="bgcolor: white"]46.5[/TH]
[TD][/TD]
[TH="bgcolor: white"]32.7[/TH]
[/TR]
[/TABLE]
[TABLE]
[TR]
[TD][/TD]
[TH="bgcolor: yellow"]54[/TH]
[TD="align: center"]42.1 %[/TD]
[TH="bgcolor: yellow"]38[/TH]
[/TR]
[TR]
[TH="bgcolor: yellow"]14[/TH]
[TH="bgcolor: white"]62.0[/TH]
[TD][/TD]
[TH="bgcolor: white"]43.6[/TH]
[/TR]
[/TABLE]
[TABLE]
[TR]
[TD][/TD]
[TH="bgcolor: yellow"]54[/TH]
[TD="align: center"]42.1 %[/TD]
[TH="bgcolor: yellow"]38[/TH]
[/TR]
[TR]
[TH="bgcolor: yellow"]14[/TH]
[TH="bgcolor: white"]82.6[/TH]
[TD][/TD]
[TH="bgcolor: white"]58.1[/TH]
[/TR]
[/TABLE]
Anyway I do agree with Bass not Bass this is a pretty good set up with a granny gear type low range. I use a 130 BCD sugino crank and 38 is the lowest I could find that fits, and I shift manually since I normally don't need the 38 chain ring. I just don't get why my numbers vary so much..