thirdgenbird

well i ran into a new campagnolo 39t ring for $15 so i bought it to give me a second gearing option. in the process i discovered and interesting setup. i fully expect that some may laugh:




now for the explication. my rear hub is a white industries eno.

fixed chain line = 43mm
ss chain line = 47.4mm

this gives me a 42x16 fixed for road riding and a 39x18 for cross riding and a close chain length for each. funny looking yes, but great flexibility for $15

FKMTB07

Clever. I dig it. Nice use of the big difference in chainline between fixed and free sides of your hub. An added bonus of having the 39t on the outside while riding more technical terrain ('cross) is that your calves will be a little more protected from getting chewed up by an empty outer chainring if you bail/crash funny.

Leukybear 

Nice!
I have to admit I had to actually look at your photo as opposed to glancing like usual
I LOL'd

thirdgenbird

yeah, at first i was disapointed the small chainring had to be on the outside then i remembered having a bloody calf from single track riding and going down.

thirdgenbird

my dad who has been a bike mechanic for years did a double take on it. it looks really odd having the rings "reversed"

RobertFrapples

So with that hub, the chainline is not the same on the free side and the fixed side? Why would they do that? Is 4.4mm too far off to run it fixed if you have a single ring and it is at 47.4?

thirdgenbird

I have no idea why they did it. The fixed side lines up with the inside ring very well. When I had the wheel on a road bike I ran the single ring on the outside with a shorter chorus bb. Either way you get a good chainline.

Standalone 

looks great if you ask me. the smaller ring on the outside continues the flattened conical form of the spider.

thirdgenbird

Very true standalone.

It's not near as clean as the single ring, but sometimes function comes over form.

WoundedKnee

I have two rings for my double freewheel, not reversed though. Way to make it work.

Bat56

It's a good idea. I'm totally annoyed that the chainline on the ENO is different on each side. I wrote White about it and they did not write back. I don't get it. It almost seems like an engineering mistake.

But maybe someone will clue me in.

silverwolf

Great idea. Love the look, I always thought manual 2-speed setups like yours with the standard chainring orientation looked very strange, this one looks nice.