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Kurt Kinetic vs Cycleops Fluid 2

Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

Kurt Kinetic vs Cycleops Fluid 2

Old 11-04-10, 08:38 AM
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merlinextraligh
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Kurt Kinetic vs Cycleops Fluid 2

Without searching, I'm sure there are tons of threads on this, but given that a lot of people are likely looking for trainers this time of year, and that I just got a Kurt Kinetic Road machine, I thought I'd relate my impressions FWIW.

Positives for the KK,
1) It is very smooth. The flywheel appears to be heavier, and it gives it a more realistic "coast down"
2)It is reportedly more reliable, but I can't really opine having just gotten it.

Positives for the Cycleops Fluid 2:

1) The manner of clamping the bike with the single lever to me is easier to use, than the QR setup on the KK, which seems to be a cobbled together design.

2) the resistance on the Fluid2 is higher for a given speed. For my purposes this is a slight advantage to the Fluid 2, because the KK doesn't have quite enough resistance for doing Muscle Tension intervals (high torque, low cadence).

With the KK I got around 250 watts at cadence in the 50's in a 53/11.

With the Fluid 2 I get around 325 watts in a 53/13 at the same cadence.

It would only be an issue for the one drill, given that there's more than adequate resistance at a more normal cadence. Also it might be possible that the resistance has increased on my Fluid 2 over 7 years if the fluid has become more viscous.

All that said, I'd favor the KK for the smoothness, and the reputation for reliability, but there really isn't a ton of difference between the 2.
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Old 11-04-10, 09:41 AM
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This is good to know. The KK is smooth and really does feel like riding on the road but it would be great if there was a way of increasing the Resistance to simulate hill climbing better. Had I known that the Cyclops had more Resistance, I might have bought it. However, my KK will probably never wear out so it isn't likely I will ever replace it.
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Old 11-04-10, 10:46 AM
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Im assuming this was without the heavier flywheel that's available for the kk? I've heard that the addition of that makes a workout on the KK a real beast. I'd be interested to hear what you thought about it with that. Nice comparison!
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Old 11-04-10, 10:49 AM
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^ just the regular flywheel. My assumption is the larger flywheel wouldn't change overall resistance. It would presumably make it a bit more of an effort to accelerate, but then you have the momentum once accelerated, so that would pretty much cancel out.

Apparently, the heavier flywheel makes it a more roadlike feel though.
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Old 11-04-10, 10:53 AM
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Interesting...I found that my KK has a bit more resistance then my old Fluid2...

It is also smoother and so far more reliable...Doesn't leak...

I do find the KK a bit of a bear to take with me to races, the Fluid2 was a bit lighter and more compact...
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Old 11-04-10, 10:56 AM
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Originally Posted by merlinextraligh View Post
^ just the regular flywheel. My assumption is the larger flywheel wouldn't change overall resistance. It would presumably make it a bit more of an effort to accelerate, but then you have the momentum once accelerated, so that would pretty much cancel out.

Apparently, the heavier flywheel makes it a more roadlike feel though.
Come to think of it, youre exactly right... That makes perfect sense, once you get that heavy wheel up to speed, its inertia is just going to keep it spinning. I guess it just affects feel and coast down times as well as initial accelerations.
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Old 11-04-10, 11:28 AM
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merlin, have you hooked your pt up to the KK and the Fluid? are they close. I found mine to match this pretty closely

http://www.kurtkinetic.com/documents..._Curves419.pdf

as much as I hate for it to.
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Old 11-04-10, 11:35 AM
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Originally Posted by rbart4506 View Post
Interesting...I found that my KK has a bit more resistance then my old Fluid2...
Reading KK's literature, they tried to make the power curve very close to riding outdoors. http://www.kurtkinetic.com/powercurve.php

And in my very limited experience it seems pretty close. For example, approximately 22mph is around 250 watts, according to the chart, and what I observed.

The Fluid 2 in my experience provides more resistance than a flat road for a given speeed. 22mph on my fluid 2 and you're getting closer to 400 watts.

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Old 11-04-10, 12:26 PM
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How accurate is the KK power meter? I am considering a power meter for my KK. A power meter is too expensive for me to use on the road, but not so bad for a KK. I just want to use to see if I am making progress.
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Old 11-04-10, 12:59 PM
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Originally Posted by Carbon Unit View Post
How accurate is the KK power meter? I am considering a power meter for my KK. A power meter is too expensive for me to use on the road, but not so bad for a KK. I just want to use to see if I am making progress.
It's as accurate as the kurt Kinetic power curve. My understanding is that the computer is just doing the math based speed and the power curve.

If you already have a computer that picks up off the rear wheel, I'd save my money, and just use your existing computer, and the curve linked above.
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Old 11-04-10, 05:39 PM
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That's what I did last year and it really helped with training...
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Old 11-04-10, 06:48 PM
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I have a Kurt Kinetic fluid trainer. It was great the 2 times I managed to ride on it during the past year...........................
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Old 11-23-10, 12:17 PM
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Thanks for posting this. I am getting my wife a trainer for X-mas and was debating KK or Cyclops2
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Old 11-23-10, 12:47 PM
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I need to get a powermeter. I'm consistently amazed at the kind of wattage estimated by riding my CycleOps2. According to charts, I'd be in the 300+ watt range for rides of an hour or so, which seems really high for me, given I'm not a cycling monster by any stretch.

Maybe there's something wrong with my unit, although it does get hot when I use it. It doesn't provide enough resistance to do standing power climbs as I would experience on a 15%+ incline. (Get the cadence up though, and it's brutal.)
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Old 11-23-10, 12:48 PM
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And FYI - I think having a training DVD and a speed sensor (or PT) for your bike is mandatory for trainer use. Without either, I can't last more than 40 minutes without going bonkers.

With both, I'm hammering out super-hi intensity intervals (spinervals) for 45-90 mins no problem. It's even better than road intervals, IMO, and not mind numbing at all with it.
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