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Could you not get some single speed specific cranks which would (should) guarantee the correct chainline?
tbc-
Thanks Tom.
Yes I could have got a set of singlespeed cranks. Although looking on the transmission database thread showed the Shimano 600 cranks as a viable option.
So shimano 600 FC-6207 double chairing cranks, mounted onto a 103mm Token carbon BB. With a single velosport chairing as the outer ring, I've got a chain line of 41.60mm
259g lighter than the FSA cranks and BB. That's also going from 42t to 44t
user69121
Ive been lurking for a while, since dusting off my bike from several years of hibernation whilst I defected to running and then running marathons and ultras.
I'd always found it too long, and usually ended up with lower back ache on longer rides so it was very low milage when I gave up riding. The layback post has been replaced with an inline and new bars with a shorter reach and less drop compared to the originals. Plus a 90mm stem replaced the 100mm, so its way shorter than standard. 45 miles the other day, wishing I'd swapped the bits years ago, as tops, hoods and drops are all usable now without any back pain.
Ive a pair of Shimano 600 cranks to put on, so hopefully end up with the chainring on the outside position. Unlike the heavy FSA cranks which won't allow a working chain line except on the inner position.
The original wheels have a poor join in the brake track, plus they are rather heavy... with a 16T sprocket and freewheel fitted, plus 23mm GP4000 tyres they weigh 3093g. Being as I was looking at a 30-40mm deep rim to go on my tri bike for windy days, ive decided to build a set for this and nick the front when needed.
New Ridea hubs have already arrived and DT 511 rims are in the post, so some wheel building to be done. High flange fixed/fixed rear and a front road hub. The DT Swiss spoke calculator estimates a wheel weight of 713g front 880g rear, which should be a reasonable weight saving.