jacks1071 wrote:I haven't gone the other way and built a Bolzano hub onto say a 27mm alloy Bracciano rim - I doubt there would be much noticeable difference since the rim itself is very strong, it would be difficult to improve on the bracciano stiffness without adding spokes or going to heavier gauge spokes, neither of which are required.
The Bolzano hubs Pro-Lite will argue transfer power better than a standard hub, difficult to quantity although I'm sure there is no disadvantage to the design.
Whats more important is matching the right hub to the right rim.
Hi jacks1071, using the Bolzano hub with the Bracciano rim should definitely produce a laterally and radially stronger/stiffer wheel than the Bracciano wheel. This is due to better DS bracing angle resulting from the larger Bolzano DS (driveside) flange diameter. This should also produce a slightly better NDS (non driveside) spoke tension which will also help in producing a laterally and radially stronger/stiffer wheel.
If the Bolzano hub produced a stiffish wheel with the Gavia P2V Volante 22mm deep rim, then it will produce a much stiffer wheel with the Bracciano 27mm rim.
The larger Bolzano DS/NDS flange diameter will also produce better NDS (non driveside) spoke tension.
Better DS bracing angle and better NDS spoke tension will produce a wheel that is laterally and radially stronger/stiffer.
The better NDS spoke tension will produce a wheel with better control of DS torque effects due to sprinting and climbing
The above (and perhaps the hub is a little stiffer) is why they will transfer power better
The question is a wheel with Bolzano hub/Bracciano rim necessary ...
- No for a weak 60kg/70kg sprinter or climber
- probably Yes for a strong 60kg/70kg sprinter or climber
- definitely Yes for a strong 80kg/90kg sprinter or climber
- Yes for a weak 90kg/100kg sprinter or climber
- Yes for touring (should it be used for touring)
- and this wheel should be able to handle a heavier rider
I guess you mustn't be interested in trying the Belray grease ... no worries. I will let you know what I think of it. I will also get some RnR Red Devil grease to compare
i will also try a 25mm rear tyre