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FTP Test Questions

Old 03-04-07, 01:40 PM
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Stallionforce
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FTP Test Questions

I just bought a Kurt Kinetic, did the roll out, and the roll down. I was very careful to do it all correctly.

I had a really hard group ride yesterday of about 3.5 hours, with about one hour at L4/L5.

What I am wondering is how the hard group ride might of affected the result today. I hit the trainer feeling pretty tired.
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Old 03-04-07, 05:07 PM
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What's the "roll out and the roll down" in relation to the KK?

Either way. No FTP test done at the end of a day that includes 3 1/2 hours of riding at any intensity will be a good gauge of FTP.
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Old 03-04-07, 05:11 PM
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You should take a couple of days off before doing the test so you're fresh.
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Old 03-04-07, 05:13 PM
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Originally Posted by NomadVW
What's the "roll out and the roll down" in relation to the KK?

Either way. No FTP test done at the end of a day that includes 3 1/2 hours of riding at any intensity will be a good gauge of FTP.
This was done the day after a 3.5 hour ride. Thought it might drop my wattage a bit. The rest of the week was quite hard too M-W block with 80 mins L4, and 20 mins L5.

Anyway, roll out refers to measuring the circumference of your wheel. You just lower your seat, and scoot forward for two revolutions, and divide that in two. You then enter that figure into your power meter. The KK power meter converts speed to power, so proper measurement of wheel circumference is critical.

The roll down isn't something mentioned in the manual; but it is online at planet x. Basically, to fine-tune the power reading, you need to pedal (in the trainer of course) up to 32km/h, then immediately stop pedalling. Your rear wheel should take 13.4 seconds to come to a dead stop. If it doesn't, you need to adjust the roller tension on the wheel.
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Old 03-04-07, 05:15 PM
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Originally Posted by JayC
You should take a couple of days off before doing the test so you're fresh.
Thanks. You have experience with the KK specifically?
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Old 03-04-07, 05:36 PM
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Ahh... gotcha. I have the KK road machine, but I use a powertap with it instead of it's accessory power meter.


Originally Posted by Stallionforce
This was done the day after a 3.5 hour ride. Thought it might drop my wattage a bit. The rest of the week was quite hard too M-W block with 80 mins L4, and 20 mins L5.
Sounds like you know the answer to your own question. In that case, you'd still want to taper for a FTP test just like you were tapering for a race. FTP should be a best case scenario value.
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Old 03-04-07, 05:46 PM
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Thanks Nomad! Yeah, I mean, I'm just a bit miffed right now because I tested at FTP of 393, or 374 with the 5% reduction for the 20 minute interval. I'm sure I set the KK up correctly. However, my coach is dubious about the result.

I might have to get a power tap wheel and run the test again on the KK, to prove that it is calibrated properly.
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Old 03-04-07, 06:50 PM
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Originally Posted by Stallionforce
Thanks. You have experience with the KK specifically?

No, I have a PT
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Old 03-04-07, 07:48 PM
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All depends on what you weigh, but if you're in the 170lb or lighter range, stay away from my races.
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Old 03-04-07, 07:57 PM
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Originally Posted by NomadVW
All depends on what you weigh, but if you're in the 170lb or lighter range, stay away from my races.
Ok, I'll stay away. Thing is I'm dumb as a box of rocks. Tactically the least shrewd person you'll ever race against. It seems when the blood goes to my muscles my brain is certainly starved and acts like it.
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