Australian Cycling Forums - Bicycles Network Australia

Just read on the KK website about the power meters, made some sense. One thing i dont get, if im doing a strength session ( eg riding the 53/12) in the saddle (AT) 60 rpm, will it give an accurate reading? Or will it be a low reading coz the wheel wont be spinning overly fast?

snedden9485 wrote:Just read on the KK website about the power meters, made some sense. One thing i dont get, if im doing a strength session ( eg riding the 53/12) in the saddle (AT) 60 rpm, will it give an accurate reading? Or will it be a low reading coz the wheel wont be spinning overly fast?

It shouldn't matter what cadence is as the power is directly proportional to the wheel speed.

I don't need the KK computer as I just go off the average speed on my computer. The Blackburn computer I use claims 1% accuracy for speed IIRC. Using the formula below I use a spreadsheet to covert the average speed to power and keep track of progress (or lack of). I also keep in mind the list below (I calculated from the formula) to give me a mental picture of what power level I may be pushing at the time.
Power = 5.244820 x Mph speed + 0.01968 x (Mph speed)^3

Km/h Power (W)
31____242
32____ 259
33____ 277
34____ 296
35____ 317
36____ 338
37____ 360
38____ 383
39____ 407
40____ 433
41____ 459

Concerns about the trainer's power readings being way off may be allayed by riding a relatively flat circular course for the same time you do on the trainer, get your average speed, then use a calculator like http://www.bikecalculator.com/ to give you another source for an estimate. Then compare the two readings and you may have a better idea whether the trainer is close or not.

As much as I'd like a real power meter, I think they are too expensive for my casual fitness training commitment.

snedden9485 wrote:

Andrew69 wrote:

snedden9485 wrote:Yeah i wonder what my one is like. I dont care if its not super accurate, im using for more of a reference point for training really.

As long as it is repeatable, I dont think the actual number really matters.

How will i know if my one is out?

So it will calculate power (my KK power meter) regardless of what gear i am in and what speed i am pedalling at?

You wont know if it is out, and it doesnt matter. So long as it is always out by the same margin so you can see your progress, that is all that matters.
As is said, the only reason if fiddled with mine was that I already had a baseline for my wife whch I wanted to continue using. Had it not been for that, I would never have bothered.
I still havent checked my PT yet, so it may well be out, not the KK computer.

The power is calculated as a function of your wheel speed, so it doesnt matter what gear or cadence you are using, any given speed will return the same power figure.

Nobody wrote:As much as I'd like a real power meter, I think they are too expensive for my casual fitness training commitment.

AU$1000 shipped from Competitive Cyclist

https://www.competitivecyclist.com/road ... 380.0.html

Will improve your riding more than any other $1000 you could spend on your bike.

Andrew69 wrote:

Nobody wrote:As much as I'd like a real power meter, I think they are too expensive for my casual fitness training commitment.

AU$1000 shipped from Competitive Cyclist

https://www.competitivecyclist.com/road ... 380.0.html

Will improve your riding more than any other $1000 you could spend on your bike.

Thats pretty decent huh. As you said, if your serious about your training, there is no better way to measure your fitness and train with power

May actually be cheaper than AU $1000 with the strong dollar at present. I think it was about $680 US plus post.

FYI. For those people that have been looking for Kurt Kinetic trainers they are now in stock in Australia and shipping! http://www.cycling-inform.com/store/cat ... -Trainers/

cycling-inform wrote:FYI. For those people that have been looking for Kurt Kinetic trainers they are now in stock in Australia and shipping! http://www.cycling-inform.com/store/cat ... -Trainers/

Any discounts on a group buy?



pretty please??

Yes, I discount for bulk orders.

Mod edit: this user has been banned for excessive commercial content of nearly every post entered. Contact Cycle-inform directly through the web site rather than PM, because he won't be able to read a PM from now on. The posts in this thread have been preserved because a particular question has been asked and answered.

KK Road Machines are on special and in stock at Chain Reaction Cycles. Only 291.20 AUD which is an absolute bargain. Be quick!!!
http://www.this link is broken/Mode ... elID=31279
Oh... free shipping if you spend $498 AUD

God that is DIRT CHEAP!

Spiza wrote:KK Road Machines are on special and in stock at Chain Reaction Cycles. Only 291.20 AUD which is an absolute bargain. Be quick!!!
http://www.this link is broken/Mode ... elID=31279
Oh... free shipping if you spend $498 AUD

Thanks..just ordered. Though you do end up adding things into the basket until you hit that free shipping. Still cheap even with all the extra clothes I purchased.

If you are going to spend the money better off getting this one for a few dollars more...?.
http://www.this link is broken/Mode ... elID=31280

Just ordered the KK Pro. Stoked with the price reduction!

Thats awesome for the also.

Thanks for the info guys, have been looking at these since Sneddens original posts.
Just bought the Pro recommended by toolonglegs and the smaller version for a mate, had to get the free postage