Cannondale Caffeine F-29: First Ride Impressions
November 17th, 2006 by Guitar Ted
Like the foggy nature of this picture, the F-29’s character is still not quite clear to me……..yet!
So far, several people have had the chance to throw a leg over the Caffeine 29″er from Cannondale here in “Guitar Ted Land”. The initial responses have ranged from high praise to downright hatred. It seems that getting a consistent reaction from folks on the bike isn’t going to happen. I think I’m beginning to see why that is.
My rides have been on several different types of terrain. Flat, twisty single track, gravel roads that were really hilly, to tight, technical single track with lots of elevation changes thrown in for good measure. Trail conditions ranged from dry, hardpack to wet, slushy snow, greasy mud, and “peanut buttery gravel”.
My initial impression is that this bike is far different than any of the other 29″ers that I have ridden so far. It rides like a big couch, for one thing, which surprised the heck out of me, considering that it is an aluminum hardtail after all. The sharp jolts and bouncing off the saddle just didn’t occur as I was expecting at first. The steering geometry was strangely different and I wasn’t sure if it was all the Lefty or what. It seemed to not really like a steer from the hip kind of input, but rather a more aggressive “throw it into the corner” kind of style that required alot of upper body input. In the tight single track, I was able to just let the bike roll through the corners in a lazy fashion, which seemed to suit the bike well. The higher speed handling in the tight stuff wasn’t going to happen on that particular ride due to a drivetrain issue unrelated to the bikes frame or design, so I’ll not mention that. Another ride in the same area is planned soon.
The Lefty strut, which is an integral part of this bike, rode really well. It felt stiff torsionally and laterally. It is still in it’s break in period, but it felt pretty smooth and soaked up alot of trail chatter. The big bumps were nothing to this suspension unit, and it plowed right over small logs and branches with impunity. The lock out feature was a welcome and easy to operate feature while riding. I never felt any strange sensations or “pull” to one side or the other due to the one legged design. It rode like a bike, that’s all.
I’ve got to put the measuring tape and angle finder to this bike and also ride it a bit more. Just by feel though, I’d say that this bike is more laid back in the front end and steeper in the seat tube than alot of other 29″ers out there. It gives the sensation that it would be a great endurance or long distance bike. It’s not twitchy, nervous, or anything close to that in the handling department. More ride time will be required to ferret out it’s exact nature.
The only concern I have coming out of this first period so far is the bottom bracket flex. It flexes during pedaling from side to side which is visible as you watch the space between the rear tire and chainstay near the bottom bracket. I wouldn’t notice it though, if I wasn’t looking at that. I guess I have to work on my spin! The front triangle feels quite stiff and laterally and torsionally solid.
Stay tuned for more to come on the Cannondale Caffeine F-29.







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The head angle is 70 degrees for all sizes according to Cannondale’s site.
maybe this is just a thoroughly n00b-esque question -
How can you tell the flex is happening in the frame and not in the wheels? Assuming the frame held the hub perfectly stiff with regard to the bottom bracket, it seems possible that the extra spoke length involved in a larger wheel would contribute to observed sideways deflection of the rim/tire relative to the stays. Does this make sense?
I know throwing my 29er into fast curves, or hitting something that puts a large lateral load on the rims, it definitely feels flexy… and with the overbuilt swingarm & linkage on a Monk, I’m reasonably certain it isn’t the frame. Maybe I’m just trying to explain that and see a little bit of it in your last paragraph.
random-adam: How do I know it’s not the wheels? Because I checked the wheels out of the bike and did a static test on the bottom bracket area for sideways deflection. It’s the frame, but that said, it’s not a big deal. I only mentioned it because of the throngs of wide 29″er tire fanatics that would have been sorry if they tried to mount a Nevegal or Rampage in this frameset. I have been riding the bike with Bontrager XR’s mounted up on it and there are no issues with the BB flex. Of course, you are loosing power to the wheels because of it.
And if my wheels were flexing as much as I am seeing the frame flex, the bike would almost be unrideable. Flex in the wheels is a totally different animal than BB flex.
George Krpan: Yes you are correct, but did you check the fork offset and figure out the trail number? That will ultimately tell you more than the head angle alone will.
Also, the fork sag will steepen that figure by a bit, and it’s when you’re riding it that the head angle really matters.
So how is the Cannondale weathering for you?
I have the medium and have liked it pretty well so far. First 29er.
I’ve changed to a longer stem and flipped it over for lower bars…might change to a flat bar too. I had to swap out the seatpost (to something that has some setback) and ram the seat all the way back to get proper knee/pedaling position. Felt like I was sitting on top of the bars and I’m not doing any triathlons on this thing. Lost a pound with a change of tires. Wheels are built pretty well but are tanks.
I really like riding this thing. It really rolls different than my 26’s. I’m sure that’s typical of all 29ers. It just needs a ’sportier’ feel.
Some things my feeble head thinks could change with 2nd gen: slacker seat tube angle AND a setback seatpost. Higher BB! Lower handlebar positioning.