How can I align a 43,5mm crankest chainline to a 42mm rear hub chainline?

Hi, I have a Rotor 3D Track Crankset with a 43,5mm chainline and a Phil Wood high flange fixed hub with a 42mm chainline.

I want to know the way of correcting this 1,5mm difference in my chainline.

Although I did some research I couldn't find this info.

Tusen Takk !!!

Spacer?

Is this the neatest solution ? I ask this because it's for a really nice project. So it would be a spacer between the hub and the cog or a spacer for the axle? Also where can I buy these? Do they come in 0,5 mm? Thanks

A spacer between the hub and the cog. Make sure there is enough thread still for the cog.
SS-spacers, cassette spacers, bb- spacers(like hollowtech) thay all fit with the same diameter.
I have used a bb- spacer on a fixed hub recently.

1.5 mm isn’t worth bothering too much about but, even though I know this, I too would be wanting to improve it.

What cog are you using? If you look on Sheldon somewhere there is a table showing that there is enough brand variation to take out a lot of that 1.5 mm just by means of a change of sprocket.

Thanks for the responses...I am using a phil wood hub and cog

According to Sheldon Brown, the chainline of your Phil Wood hub and sprocket is: 36.75mm + 6.05mm (http://sheldonbrown.com/chainline-single.html) This gives a chainline of 42.8mm.

That gives a 0.7mm difference which really is negligible considering the 350mm+ distance between your cranks and sprocket and I would not add a spacer.

Also, how accurate is your measurement of the Rotor chainline? If you measured with micrometers, then ok but if it's measured with a plastic ruler or the like then it wont be accurate to anything less than +/-2mm.

I'd build it up without a spacer, lube it and ride it. If it makes a noise, you can always add a spacer later, no harm done. I reckon it'll be fine without.

This makes interesting reading ...

http://blog.pedalitis.com/2013/03/05/the-amazing-unimportance-of-chainline-and-chain-lubrication/

Many thanks for all the answers !!!

Phil, that is such an interesting work of research ...

Cheers