Chainstay Angle - Help Me Pick A Front Mech?

Howdy all,

I'm looking to install a 2x10 M6000 groupset on my Soma Tradesman and I'm stumped about the front derailleur choices. I know that given the cable routing on the frame I need either and FD-T6000-H-3 or FD-T6000 with the deciding factor being the chainstay angle. I've done some searching but haven't be able to find a means of measuring or calculating this. Anyone have any thoughts?

Misc. Info:
Seatube Angle - 69.4°
Chainstay Length - 455
BB Drop - 77

FD-T6000 - 66-69°
FD-T6000-H-3 - 63-66°

Cheers!

I've done some searching but haven't be able to find a means of measuring or calculating this.

Right angled triangle definition.

Are you sure your seattube angle is correct? Bb drop also seems high to me.

Are you sure your seattube angle is correct? Bb drop also seems high to me.

Yeah. Taken from Soma's site - maybe something to do with the wheel size being 20"/26"?

Cheers for doing the math also! Looks neither of these derailleurs will work then?

Soma Tradesman

Ah, yeah. Funky frame.

Looks neither of these derailleurs will work then?

FD-T6000-H-3 - 63-66° will probably work? Don't quote me on that though.

Guess I'll just have to take a crack at it. Thanks for your help!

No problem! I guess that stuff is useful in the real world after all.

Good luck with the derailleur. You could also try contacting Soma for advice.