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 Post subject: New Giant Propel
PostPosted: Sat Mar 31, 2012 2:48 am 
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Joined: Sat Jan 21, 2012 5:28 am
Posts: 208
Heard from my LBS Giant is coming out with an aero frame.
Anyone heard any chatter about this?
Was thinking really hard about purchasing the TCR Advanced SL 0, but now I must pause.
Another hold up for me is waiting for 11 speed and revamped Di2.


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PostPosted: Sat Mar 31, 2012 3:28 am 
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Location: West Central Florida
I heard the same. Lbs said around July. Very curious about this.


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Posted: Sat Mar 31, 2012 3:28 am 


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PostPosted: Wed Aug 08, 2012 11:02 am 
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Image

anyone has a better picture?


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PostPosted: Wed Aug 08, 2012 5:24 pm 
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I can't tell anything from that picture.


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PostPosted: Wed Aug 08, 2012 5:40 pm 
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Location: Geneva
Spoke to the Rabo mechanics and some of the ex-Rabo pros that have been testing it. I think they were still debating on the brake placement (I would bet it'll be madone style give the close giant-shimano connection). They were really quite positive about it, but they do seem to be a bit late to the game now so it'd better be special.


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PostPosted: Wed Aug 08, 2012 5:57 pm 
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The giant in the picture has a pretty aero looking junction around the seat clamp/seat stay rear wheel area. It reminds me a lot of the Felt DA junction. Rear brake is maybe set in the frame a little ala the fuji TT bikes...?


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PostPosted: Wed Aug 08, 2012 6:10 pm 
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While the picture is pretty terrible it is still fairly informative;

The frame is has a flat top tube in order to maintain the orientation with the flow.
The rear seat stays consist of a UCI legal aero section that terminates in a way fairly similar to the Trinity.
The rear brake has not been hidden under the BB so it will be more flexible with regards to what brakes can be used.
Looking at the fork, they have either fattened up the airfoil section quite a bit (not terribly likely) or since the brake pads on the front are extending behind the fork, it is in fact an integrated front brake.


And now for some conjectures;
Depending on how the rear stays are formed into seat tube, it could shield the rear brake fairly well and effectively extend the airfoil section.
Looking at how the riders (Theo Bos?) leg is obscured by the seat mast, they will be using a slightly thinner section airfoil or a unique aero section. By looking at the downtube where we can tell how narrow the downtube is by comparing the bottle and what we can see from where the frame member overlaps it's own shadow. By using comparative scaling in the picture and the fact that UCI likes the 3:1 ratio and most manufacturers push the 3:1 rule, then the down tube is about 1.75"x.58" in the perpendicular cross section if they are using a true airfoil shape. However, since a tube shape like that would be very flexy we can assuem that they are using some sort of a different truncated airfoil or similar solution.

Also what race was that screenshot from?


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PostPosted: Thu Aug 09, 2012 8:18 am 
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Location: Vicenza
Eneco Tour, 1st stage.

Ive been told that the Giant aero frame wasnt approved on time by UCI for the Tour and just got approved recently (that's why its used on a race otherwise it cannot!).

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PostPosted: Thu Aug 09, 2012 10:59 am 
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Location: Adelaide, Australia
I've heard that it will be called the "Propel Advanced sl" not sure how much truth there is to that though

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PostPosted: Thu Aug 09, 2012 6:12 pm 
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Location: Switzerland
Not in the 2013 catalog yet

http://www.giant-bicycles.com/en-us/bike-index/?collections_id=9&preview=true


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PostPosted: Thu Aug 09, 2012 7:46 pm 
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The Propel got UCI approval on the 12th of June.

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PostPosted: Sun Aug 19, 2012 1:54 am 
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I wonder if we will see any at the vuelta?
Apparently official release is at the Tour Down Under from what I have seen on other forums


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PostPosted: Sun Aug 19, 2012 2:07 pm 
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Location: Vicenza
euan wrote:
The Propel got UCI approval on the 12th of June.


Then they had plenty of time for using it at le Tour. :?

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PostPosted: Mon Aug 20, 2012 2:13 am 
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Heard this will be released in January. Not sure if that means it will be available though.


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Posted: Mon Aug 20, 2012 2:13 am 


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PostPosted: Mon Aug 20, 2012 11:05 pm 
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Location: Boulder, Colorado
can anyone find any additional images?

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