After the exciting reveal of the new Helios Aero frame I was asked by our Geos test riders what the status was with the Geos development, and even if the development project and the Geos model were still going ahead.
So, without further ado, introducing the giant killer, the brand new Velocite Geos!
The Geos project has a very long history (for us anyway) and I will recount some information about the beginnings of what is now a Velocite Geos.
We first conceived the Geos project as an ULFP – UltraLight Frame Project almost 2 years ago. We discussed our needs and weight targets with the factory engineers and they came up with a very good idea. They had a mold for the “front triangle” in storage. This mold was designed and is still owned by an Italian brand.
I looked at the frame and saw that it had potential once we made some changes to it. We ended up making so many changes to the final frame as part of the design process and as a result of our live testing program that we now own the Geos design outright.
The basic feature of the front of the frame that originally caught our attention is its compactness. This is a very good thing when it comes to making a lightweight frame with adequate stiffness since a compact type geometry is inherently stiffer than the traditional geometry. This opened up an astounding number of carbon layup options, most of which would result in a rideable frame. Of course our target is not to make just a light and rideable frame. Contrary to the bulk of the information in the market at the moment, it is not difficult to make a light frame, it is however exceedingly difficult to make a frame that is both light and has truly high performance. We are not satisfied with using stiffness to weight ratios rather than outright stiffness as a measure of how the frame will perform.
To help with the stiffness we opted to design a tapered head tube with a 1.5” bottom bearing. The head tube is also a bit taller than the norm to help minimize the use of spacers. Both of these features help achieve excellent steering precision when coupled with the super light and stiff Velocite Bora S fork.
The bottom bracket uses the BB30 system which in our view is the best standard for high performance frames due to it being an open standard and thus allowing riders to customize and service their bikes with minimum hassle. Due to the design of the BB30 system, the cranks also weigh a lot less than the standard BSA/ISO cranksets and match the exotic proprietary designs in both stiffness and weight.
The advantage of using the BB30 is also with the size of the junction with the chain stays. BB30 design increases this area somewhat making it stiffer. The final design feature that makes the Geos a contender against the top frames of 2011 are the oversize chain stays. They are 45mm tall. This is important for overall performance of the frame for a simple reason:
There is no such thing as a “stiff bottom bracket”. The correct terminology is “stiff AT the bottom bracket”.
Large chain stays, large bottom bracket area and a large down tube help minimize the lateral flexing of the frame at the bottom bracket. This means that with every pedal stroke you will be propelled forward with minimum energy loss (conservation of energy theory does not apply in dynamic systems that include non-perfectly elastic elements like the rider for example).
Thus two main themes are apparent with the Velocite Geos: it is light and stiff.
The geometry is also very versatile thus the 4 sizes should allow most riders to find a correct fit.
|SA – Seat Tube Angle||74°||73.5°||73°||72.5°|
|HA – Head Tube Angle||72°||72.5°||73°||73.5°|
|ST – Seat Tube Length||440mm||480mm||520mm||560mm|
|BD – BB Drop||68mm||68mm||68mm||68mm|
|TT- Top tube length||530mm||547mm||570mm||590mm|
|HT – Head tube length||130mm||155mm||175mm||200mm|
|SC – Stack||527mm||552mm||573mm||598mm|
|RA – Reach||379mm||383mm||395mm||402mm|
|RC – Chain stay length||408mm||408mm||408mm||408mm|
|WB – Wheelbase||972mm||982mm||995mm||1006mm|
Construction: monocoque carbon, high modulus blend using high compression technology for perfect shape control
- Asymmetric, tapered head tube 1 1/8” top, 1.5” bottom
- BB30 bottom bracket
- Through the head tube cable routing
- Internal rear brake cable routing
- Carbon dropouts – wrapped and bonded to the frame, not pinned
- Compact geometry
Weight: Up to 1100g for size XL, painted, with all fixtures attached
Price: US$ 1699.
Includes: frame, Bora S fork, headset, TLCS31 seatpost, Velocite Anchor clamp
Availability: February 2011
Velocite Geos will compete very effectively against all top frames from major brands. The weight will be comparable, Geos will win in terms of outright performance, but we may concede some aspects of comfort since we do not use ultra thin seat stays, opting instead to deliver instant acceleration and lateral stiffness.
You may ask then what about the Velocite Magnus? Well, the Magnus is beyond what other brands are currently making and we are working very hard on keeping it there.