The new Giants appear to be steeper. The problem is they look OK in the smaller sizes whereas the bigger models look like kids bikes. Bigger frames look much better with a more gradual slope.
Just my two cents...
2006 Orbea Lobular - Aluminum and Carbon frame with Ultegra
the general benefit of a sloping top tube is that it takes standover height completely out of the fit equation. with traditional geometry bikes, if someone comes in with proportionally short legs and long torso, the ideal "reach" of bike will be too tall for him. there would be no standover clearance. if that person went down in size, the reach of the bike would be too short. a sloping top tube addresses that very well.
i definitely think giant got it very wrong in the beginning. specialized did it well, cannondale with their 2cm top tube drop is a nice middle ground.
as for lateral/torsional stiffness, overall i dont think it makes too much of a difference one way or the other, but i do believe it's easier to build in vertical compliance for a given lateral stiffness, especially with seatpost flex.
frames it didn't matter but for carbon it make sense to have a continuous
undisturbed strand of fiber from TT to seatstays - is that the reason too?
Anyway, I hate short top tubes and tall head tubes that came with this fashion
and people are using spacers, up-sloping stems and non-offset seatposts
along with already relax geometry. Heresy.
sloping may or may not be stiffer but because of the longer seat tube needed it make the whole package more flexiable, long eat tubes especially 'aero' ones flex alot
phourgenres wrote:All I'm asking is whether there was a functional reason for the sloping geometry on the new road bikes, or whether it was just an aesthetic move. In my opinion, my question was answered.
Not functional. Not aesthetic. Strictly business. Fewer frame sizes to fit more people. Less costs of manufacturing. More profits.
GT had that rear triangle thing going on some years back. It had the seat stays attached lower on the seat tube and was marketed as giving a stiffer rear triangle. All they needed to do was slope the top tube. Giant has often said that sloping top tubes came about to reduce the number of molds to three, small, medium and large. Some riders like to squat on the sloping top tube to get more aero.
It has become a trademark for comfort fit bikes as it hides the really long head tube you would otherwise see. Look at the saddle vs stem hight. Many of these bikes have the bars almost level with the seat. Lets you "look" faster
Valbrona wrote:You can swing your 'nads over more easily if the top tube is lower.
For a guy that rides a 50cm bike sloping is always welcome at 5'5"
2011 Scott Addict R1 DA 7900 Matt black
2012 Scott CR1 Pro Ultegra 6700
2015 Specialized SWorks Tarmac Da 9000
2016 Specialized SWorks Tarmac DA 9100
- Similar Topics
- Last post
- 15 Replies
- 969 Views
Last post by eric01
Sat Apr 07, 2018 12:07 pm
- 17 Replies
- 3553 Views
Last post by spartacus
Sat Jul 22, 2017 4:14 pm
- 3 Replies
- 442 Views
Last post by cyclenutnz
Sun Oct 22, 2017 2:20 am
- 6 Replies
- 1167 Views
Last post by wingguy
Sun Dec 17, 2017 6:11 pm
- 0 Replies
- 276 Views
Last post by itsacarr
Sun Feb 11, 2018 3:59 pm