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18-02.-2008, 12:06 AM
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#1 |
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Registered User
Join Date: Jul 2007
Posts: 49
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Kurt Kinetic computer
Hi guys,
I'm just about to put my damn KK trainer on ebay...I've just about had enough of it. Don't get me wrong, I love the trainer. It has a great feel to it. It's just the bloody crapy power computer they sell with it. £25 for something that looks like it was made in China in the 70's. I've already sent 2 back and I'm on my third now. After a few weeks of use these things just seem to begin to go wrong. The first one I had the buttons kept sticking so that you couldn't change the display screen without resetting everything. Then it started blanking out and going back to zero in the middle of a session. The 2nd one they sent me was dead on arrival and the third one resets the tyre calibration size half way through a session and changes to km/h. That's if it makes it through a 20 min session at all. I real really wish I'd gone for another trainer with power. I'd heard bad things about the KK power computer before I bought it but TBH I thought it really can't be that bad. How wrong I was.  (rant over) |
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18-02.-2008, 01:27 AM
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#2 |
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Registered User
Join Date: Aug 2007
Location: Upstate NY
Posts: 85
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Re: Kurt Kinetic computer
I was fairly disappointed when I got my KK computer and discovered how cheesy the thing is for the price. Mine ate batteries but always functioned. I killed it by accident when the chainstay sensor shifted position while out on the road, resulting in amputation. If you like the KK, just buy a cheap rear sensing cycle computer.
__________________
http://fleshbroiler-fitness.blogspot.com/ |
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18-02.-2008, 04:05 AM
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#3 | |
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Registered User
Join Date: Mar 2006
Posts: 86
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Re: Kurt Kinetic computer
Quote:
If you REALLY want to frustrate yourself I have a TACX Fortius for sale at a great price. |
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18-02.-2008, 04:33 AM
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#4 | |
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Registered User
Join Date: Jan 2007
Location: Draper, Utah
Posts: 406
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Re: Kurt Kinetic computer
Quote:
I used the little computer on my KK up until I got Powertap a year ago and it had issues too. IIRC, it wouldn't work if it was snapped "correctly" into the cradle. I had to pull it out slightly to make it work. Just print Wiredued's conversion list, paste it on a wall next to you while training. You'll have it memorized in no time.  Or, make your own spreadsheet using this formula:Power = (5.24482*Speed) + (.019168*Speed^3)
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18-02.-2008, 04:38 AM
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#5 | |
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Registered User
Join Date: Jul 2007
Posts: 49
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Re: Kurt Kinetic computer
Quote:
Does anyone have any recommendations for a rear mounted computer? I think I'll ditch the KK comp. |
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18-02.-2008, 07:29 AM
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#6 | |
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Registered User
Join Date: Jan 2007
Posts: 175
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Re: Kurt Kinetic computer
Quote:
Finally just get another "computer" like others have said. My 2nd KK computer is still going well, I lost the first one doing thru and off on the dual carriageway. I haven't been able to read your blog for a while cause its keeps saying I'm not invited or something. I'm glad things are going well. Have you tried a 3 x 30 on the KK yet thats a lot of fun  |
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18-02.-2008, 08:03 AM
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#7 |
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Registered User
Join Date: Jul 2007
Posts: 49
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Re: Kurt Kinetic computer
Hi Ade,
I didn't mean I was going to stop training...LOL Just that I'm sick of the KK computer going mental on me. BTW, I'm on my third one since November. I think I'll do as you suggest and get an ordinary rear wheel sensor comp and just deduce the wattage from the average speed. Sorry you couldn't access the blog....not sure why that was. I'll check the settings on the blog page. Not tried a 3x30 yet. Maybe if this cold weather keeps up I'll knock one out next weekend  cheers John |
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18-02.-2008, 08:19 AM
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#8 | |
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Registered User
Join Date: Jan 2007
Posts: 175
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Re: Kurt Kinetic computer
Quote:
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18-02.-2008, 08:26 AM
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#9 | |
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Registered User
Join Date: Jul 2007
Posts: 49
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Re: Kurt Kinetic computer
Quote:
I cycle into work in the city, which is about 10 miles each way, but that's by no means training since I tend to go really slowly and get over taken quite a lot by fat mountainbikers with panniers. I'm not into all this commuter racing  So I just twiddle along in the small ring. My typical week I'll do 2 turbo sessions maybe on Tues and Thurs and get out on a club run once or twice a month. So, not a lot of hours really. I've got no problem about missing a session here and there if I'm feeling tired. I reckon at my age it's better to rest rather than push yourself too much |
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18-02.-2008, 02:58 PM
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#10 | |
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Registered User
Join Date: Aug 2004
Posts: 1,124
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Re: Kurt Kinetic computer
Yup the KK computer is crap FWIW IMHO the KK Rock and Roll Pro is crap too... OTOH The Kurt Kinetic Road Machine is the best trainer in it's price range if you don't have Computrainer money I would keep it.
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__________________
Romans 5:10 For if, when we were enemies, we were reconciled to God by the death of his Son, much more, being reconciled, we shall be saved by his life. http://www.earnharts.com/html/reala...ecific.asp?id=3 |
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18-02.-2008, 04:23 PM
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#11 |
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Registered User
Join Date: Mar 2007
Posts: 28
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Re: Kurt Kinetic computer
Echoing what others have said. In my experience (I own two, the standard KK and a KK Rock and Roll Pro) Kurt Kinetics are really great trainers. Super heavy duty and dependable. Customer service is also great.
However, like you said the power computer is a joke. I had problems with mine also after dropping it. They quickly replaced it free of charge, but I opened up the old one to see if I can fix it. They use a VERY flimsy method of passing the electrical signal through to the screen. It is essentially two small rectangular pieces of foam that have conductive channels that sit on the top and bottom of the screen. They are barely glued into place and if they ever move out of place, realignment is a nightmare. Just get a standard cyclo computer that reads speed, you'll be able to use it outside without having to ignore the giant power number. Just look up from the previously provided charts the corresponding powers to the zones you want to target and use that. |
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18-02.-2008, 05:24 PM
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#12 |
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Registered User
Join Date: Jul 2007
Posts: 49
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Re: Kurt Kinetic computer
thanks guys.
Good advice |
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19-02.-2008, 01:18 AM
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#13 | |
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Registered User
Join Date: Feb 2008
Posts: 10
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Re: Kurt Kinetic computer
Quote:
Power = (5.24482*Speed) + (.01968*Speed^3) incorporating what appears to be a typo from the Kurt Kinetic website. Compare to the chart at: http://www.kurtkinetic.com/document...r_Curves419.pdf Hmm, wait, they agree... never mind, carry on.  |
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19-02.-2008, 05:08 AM
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#14 | |
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Registered User
Join Date: Jul 2007
Posts: 49
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Re: Kurt Kinetic computer
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19-02.-2008, 09:15 AM
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#15 | |
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Registered User
Join Date: Aug 2007
Posts: 19
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Re: Kurt Kinetic computer
Quote:
From the KK website: Remember algebra? Good. The formula for the Cyclone and the Road Machine turns out to be a cubic function. If we let S stand for “speed” in miles per hour, and P stand for “power” in watts, the formulas are as follows: Kinetic Cyclone: P = (6.481090) * S + (0.020106) * S3 Kinetic Road Machine: P = (5.244820) * S + (0.01968) * S3 For example, to calculate how much power is produced at a speed of 16.1mph while riding the Kinetic Road Machine, plug 16.1 in for “S.” P = (5.244820) * (16.1) + (0.01968) * (16.1)3 P = (5.244820) * (16.1) + (0.01968) * (16.1) * (16.1) * (16.1) P = 84.4416 + 82.13017 Power = 166.571 watts |
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