On the CTC forum there has been an interesting post regarding spoke length and tension. The poster posted some maths. I like maths as it proves a point well. The result was spoke length does have an influence on tension, something I thought was not the case or I didn't think it made a practicle difference. In partiular by using different crossing on each side of the wheel you can alter the tension balance a bit.
The result. d is DS n is NDS. W is flange spacing on that side and L is spoke length
Td/Tn= (Wn/Wd)(Ld/Ln)
http://forum.ctc.org.uk/viewtopic.php?f=5&t=70387For example my winter bikes rear wheel.
Miche Primato hub DS flange spacing =16.75mm NDS flange spacing = 38mm
Rim is a 28H DT Swiss RR415 using spokes 285mm DS and 287 mm NDS. DS tension repects the limit on the rim at 107 kgf or in proper units 1050N. NDS tension is 47 kgf or 460N. The rear wheel is laced 2x.
So I I were to relace the wheel 2x DS and 3x NDS the tension would change (NDS) to 49 kgf or 480 N. That is measurable and would be worth it. So to Hugo it may be worth lacing you rear wheel 2x DS and 3x NDS!
Doing 1x heads in DS will have the same effect but try doing 3x NDS for further tension balance. I have done some sums for the BHS hub with 1x Ds and 2x NDS, 2x lacing each side and 1x DS and 3x DS
The results. I will assume 120 kgf DS tension or 1175N.
1xDs and 2x NDS tension will be 56.1 kgf or 550N.
2x both side NDS tension will be 54.7 kgf or 535N.
1x DS and 3x NDS will result in NDS tension of 57.9 kgf or 567N.
A worth while increase for 1x and 3x lacing. It will also add tortional stiffness. I have yet to try this and see the results. I had though about it before but rejected the idea as pointless. It may not be.