Power Meters are great.
Comments
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Did you calibrate / zero the SRM cranks before the ride?Bhima wrote:It said my max power from the ride was 1229 watts. :shock: Is this normal?0 -
Bhima wrote:Oh, and this powermeter does come with a proper cadence meter. Maximum registered cadence so far was 276 RPM. 8)
Was this using a 18 chainring and 34 cassette? :shock:Carlsberg don't make cycle clothing, but if they did it would probably still not be as good as Assos0 -
bhima, please post a screenshot of your workout (like napd did, but a real one).
276 rpm
maybe if you had 2 magnets on the cranks. 0 -
The PowerTap has a "virtual cadence" function that works out cadence from the power variations as you turn the cranks - it works OK when you are putting the power down by can be a bit unpredictable when you are feathering the pedalsRokkala wrote:max rpm 163 :shock: that'd be fun to watch0 -
Bhima wrote:I just did a short 15-miler today as there's a load of closed dual-carriageway roads in Manchester today for some reason. (?)
It said my max power from the ride was 1229 watts. :shock: Is this normal? What do professional sprinters get up to? Can someone put this figure into perspective please? I remember sprinting into an uphill headwind at one point, followed promptly by a total lung blowout/leg failure/brain blackout/heart explosion/etc. It was probably the power output from that. There was no way I could have gone harder.
Don't have any software for analysis yet, but I have to return the cranks and stuff back to my mate on Saturday so it'll be a while before I can see graphs as my slowly increasing powertap fund is behind it's expected schedule by 3 weeks now.
Doing a TT tomorrow (10 miles). Should I try and pace my effort using it? Or should I just pace it on feeling (as usual) and use the power measurements to stop me going overboard at the start/on climbs/etc?
Oh, and this powermeter does come with a proper cadence meter. Maximum registered cadence so far was 276 RPM. 8) Although, my average is going down every week, probably because i'm starting to use lower cadences a bit more.
If you do a 10mile TT, is it with a club? If so link to the records so we can see the official times from the TT organizers.0 -
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Bhima wrote:ShockedSoShocked wrote:Have you entered a race yet?
Loads. Although, none near where I live. Stayed daaahn saaahf for a bit with a mate and did 10 races in 14 days the other month.
In one thread you say you take 2-3 days off after a hard session, the next thread you raced 10 times in 14 days...
:roll:"A cyclist has nothing to lose but his chain"
PTP Runner Up 20150 -
Bhima wrote:I just did a short 15-miler today as there's a load of closed dual-carriageway roads in Manchester today for some reason. (?)
where was this??Bhima wrote:Don't have any software for analysis yet, but I have to return the cranks and stuff back to my mate on Saturday so it'll be a while before I can see graphs as my slowly increasing powertap fund is behind it's expected schedule by 3 weeks now.
all spent on bananas??
Bhima wrote:Oh, and this powermeter does come with a proper cadence meter. Maximum registered cadence so far was 276 RPM. 8) Although, my average is going down every week, probably because i'm starting to use lower cadences a bit more.
276 RPM ??? you were doing one complete revoultion of the pedals every 0.2 seconds :shock:
well the cadences couldn't get any higher really can they?? :roll:0 -
What cadence does the average car wheel do at 70mph?0
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Thread of the year imo.0
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Will,
Quick maths:
Ave car wheel (?) - 16" - so cicrcumference of 1.28metres
70mph = 112,560 metres per hour = 1876 metres per minute
so cadence of about 14500 -
Infamous wrote:Thread of the year imo.
It will be now Will & Bhima have taken over....0 -
sportbilly1976 wrote:Will,
Quick maths:
Ave car wheel (?) - 16" - so cicrcumference of 1.28metres
70mph = 112,560 metres per hour = 1876 metres per minute
so cadence of about 1450
But that doesn't take into account tyre?Carlsberg don't make cycle clothing, but if they did it would probably still not be as good as Assos0 -
wow, just....wow 0
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sportbilly1976 wrote:Will,
Quick maths:
Ave car wheel (?) - 16" - so cicrcumference of 1.28metres
70mph = 112,560 metres per hour = 1876 metres per minute
so cadence of about 1450
this is not the equivalent of cadence as I understand it - number of revolutions of the pedals per minute.
Unless I am completely wrong, I have a cadence monitor in my car telling me how many revolutions the crank has done per minute, or rev counter. The speed then depends on the gearing (as on a bike).0 -
KingstonGraham wrote:sportbilly1976 wrote:Will,
Quick maths:
Ave car wheel (?) - 16" - so cicrcumference of 1.28metres
70mph = 112,560 metres per hour = 1876 metres per minute
so cadence of about 1450
this is not the equivalent of cadence as I understand it - number of revolutions of the pedals per minute.
Unless I am completely wrong, I have a cadence monitor in my car telling me how many revolutions the crank has done per minute, or rev counter. The speed then depends on the gearing (as on a bike).
Graham - true....so the approx 4000 rev's of an engine for 70mph implies a gearing of 2.5:10 -
Bhima wrote:I just did a short 15-miler today as there's a load of closed dual-carriageway roads in Manchester today for some reason. (?)
It said my max power from the ride was 1229 watts. :shock: Is this normal?
Oh, and this powermeter does come with a proper cadence meter. Maximum registered cadence so far was 276 RPM. 8) Although, my average is going down every week, probably because i'm starting to use lower cadences a bit more.
Max power there is totally normal - well, pretty good, but nothing exceptional. But pure figure means little without taking into account the mass you have to propel forwards, resistance, etc, etc. So would be a great value for a 60kg rider, a little less good for an 80kg rider, etc.
You don't actually believe that recorded cadence, do you. A blip perhaps in the measuring? Has been known to happen! What's your average cadence?
Maybe you're able to race 10 times in 14 days because your bike is so light. Did you ever get your friend to drop it into the parts cleaner at the garage?0 -
sportbilly1976 wrote:Infamous wrote:Thread of the year imo.
It will be now Will & Bhima have taken over....
How very true 0 -
This thread has just started to get moldy.0
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Try SportTracks:Bhima wrote:Don't have any software for analysis yet
http://www.zonefivesoftware.com/SportTracks/
Free download, and I think it reads most formats, certainly worked for my Garmin 705 files containing PowerTap data before I got WKO+.0 -
chrisw12 wrote:Blonde wrote:I'd love to try power cranks just out of interest, but having never got on even with the simplest of HRMs, hating the annoying bleeping, tearing the thing off in annoyance and thowing it to the ground, I doubt I could justify the expense of a vastly more technological peice of kit. Still they're obviously a hugley useful training tool, particularly when coupled with a HRM, for those who take these things seriously (or have too much money for their own good).. Maybe a HAM (hot air monitor) would be a useful tool also....
Are you having trouble reading or are you intentionally taking the thread in another direction?
He did say he was getting a powerTAP not POWERCRANKS :?:
By the way I was under the impression that you'd just bought a powertap and found it a revelation?
I've just bought one and I've just got to say wow!
Actually it may be you having difficulty reading as the OP stated he was using the SRM powercranks but was purchasing a powertap. Perhaps a HAM and TBM (TalkingBolloxoMeter) might be more use.M.Rushton0 -
Interestingly an on-line gear calculator tells me that assuming you are using 700x23 tyres, a 34 tooth chainwheel and a 25 tooth sprocket, at 276 rpm you'd only be doing 29.4mph.
If you could do it on a 53/11 you'd be travelling at 104mph...0 -
Can you give me some times from these 10s and also the organising club and date from one of these races?"In many ways, my story was that of a raging, Christ-like figure who hauled himself off the cross, looked up at the Romans with blood in his eyes and said 'My turn, sock cookers'"
@gietvangent0 -
mrushton wrote:chrisw12 wrote:Blonde wrote:I'd love to try power cranks just out of interest, but having never got on even with the simplest of HRMs, hating the annoying bleeping, tearing the thing off in annoyance and thowing it to the ground, I doubt I could justify the expense of a vastly more technological peice of kit. Still they're obviously a hugley useful training tool, particularly when coupled with a HRM, for those who take these things seriously (or have too much money for their own good).. Maybe a HAM (hot air monitor) would be a useful tool also....
Are you having trouble reading or are you intentionally taking the thread in another direction?
He did say he was getting a powerTAP not POWERCRANKS :?:
By the way I was under the impression that you'd just bought a powertap and found it a revelation?
I've just bought one and I've just got to say wow!
Actually it may be you having difficulty reading as the OP stated he was using the SRM powercranks but was purchasing a powertap. Perhaps a HAM and TBM (TalkingBolloxoMeter) might be more use.
Actually it may be you who is having trouble reading or perhaps seeing words that are not there . On page 1 Bhima wrote 'Borrowing one from a mate while he's on holliday in France - it's the top-end SRM one too!
Getting a Power Tap in a couple of weeks though.'
Where does it say POWERCRANKS?
He says he's got a SRM, but these are not POWERCRANKS. POWERCRANKS is a totaly different product.0 -
How about just riding your bike as hard as you can???? Let your body tell you what you can maintain......................................0
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The UK distributor refers to the product as SRM powercranks:chrisw12 wrote:Where does it say POWERCRANKS?
He says he's got a SRM, but these are not POWERCRANKS. POWERCRANKS is a totaly different product.
http://www.scientific-coaching.com/SRM% ... nformation0 -
These are the Power Cranks Chris is referring to - a weird system with a clutch in the bottom bracket which is supposed to improve your pedalling technique, otherwise the cranks just spin round independently of each other!TarmacExpert wrote:
The UK distributor refers to the product as SRM powercranks:chrisw12 wrote:Where does it say POWERCRANKS?
He says he's got a SRM, but these are not POWERCRANKS. POWERCRANKS is a totaly different product.
http://www.scientific-coaching.com/SRM% ... nformation
http://www.pezcyclingnews.com/?pg=fulls ... tatus=True0 -
Thanks Bronzie for digging me out of bit of a hole!
I was joking about the not reading bits, but I was genuinely confused when you said on the first page about trying powercranks.
Which ones did you mean? I'd love to have the srm system, but seen the prices! Whereas the 'wierd' powercranks seem like quite a novelty that could be tried for a bit of fun over winter.
For a newcomer this power stuff and terminology can be very confusing and I'm a bit surprised at the Uk distributor refering to them as 'SRM Powercranks'
All good stuff though and once again thanks Bhima for your proceless insights. 0 -
They retail at $700, so an expensive noveltychrisw12 wrote:Whereas the 'wierd' powercranks seem like quite a novelty that could be tried for a bit of fun over winter.
http://autobus.cyclingnews.com/tech.php ... owerCranks0
