'On yer bike' says Boris...

labbby said:
you could always get a stages crank arm power meter then switch it between bikes if you have more than one.. make sure it’s compatable with both cranks though. I don’t know much about fixed gears to be honest.

with strava I don’t think you need to pay monthly if you are just comparing your own stats, I believe it just removes you from the leaderboards. If I’m wrong could someone please correct me.. I got a tad confused with their pricing model :D
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I just had a quick google and it seems they're not really worth it for track bikes. They seem to get thrown off by the ability to pedal backwards which makes the data lose some integrity. I'll definitely look into them when I decide to get a geared road bike though.

I just like Strava to compare to my friends times but most of them don't really use it that religiously so I'm not sure it's worth it to me. I'll use it to track my own progress but for my level i find the basic details in the Apple fitness app seems to tell me most the bits I'm interested in
 
Boris's £50 isn't going to pay for a power meter (unless I can get 10 vouchers) ... I don't understand why these are so expensive, and have not been commoditized ...
I'd have one any day over disk brakes or electronic gear change.
 
jpaul said:
Boris's £50 isn't going to pay for a power meter (unless I can get 10 vouchers) ... I don't understand why these are so expensive, and have not been commoditized ...
I'd have one any day over disk brakes or electronic gear change.
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To be fair I'd say things like power meters are for those dedicated to the lycra lifestyle and it's not exactly a cheap hobby to get into either.
 
Junglist said:
To be fair I'd say things like power meters are for those dedicated to the lycra lifestyle and it's not exactly a cheap hobby to get into either.
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when marketting gets to work ... they have succeeded in selling apple watch based hrm's to the public.


SixTwoSix said:
There is generally a 10-30% calorie variance of running a mile versus walking a mile dependent on the individual.

Shameless quote steal:

A study...you can find many more that come to similar results.

https://pubmed.ncbi.nlm.nih.gov/23190592/
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I thought your reference was going to substantiate the 10-30% ?
it actually says
Superiority of distance based vs. time based estimates of energy expenditure
Virtually all epidemiological studies calculate exercise energy expenditure from time and intensity. Running and walking are two well-defined activities whose energy expenditure can be calculated from distance rather than time [36,37]. Cross-sectional analyses show that the distance-based calculations provides a superior metric for epidemiological research over the time-based calculations [36,37], but whether this applies to longitudinal analyses of changing physical activity is not known. The runners’ data were therefore used to test whether ΔMETh/d was more strongly related to ΔBMI and Δwaist circumference when calculated from distance than from intensity and time. When the two estimates were used in separate regression models, the effect (Δkg/m2 or Δcm per ΔMETh/d adjusted for covariates) was greater when energy expenditure was calculated from distance than time for both ΔBMI (ΔMETh/ddistance vs. ΔMETh/dtime slope±SE males:-0.122±0.004, P<10−211 vs. −0.059±0.002, P<10−128; females:-0.086±0.005, P<10−77 vs. −0.044±0.003, P<10−55
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so about 2 times the energy used, running a distance versus walking ?
 
jpaul said:
I thought your reference was going to substantiate the 10-30% ?
it actually says

so about 2 times the energy used, running a distance versus walking ?
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Apologies...that was the study linked from a few articles which stated 10-30% variance. I had assumed, carelessly I admit, that they'd have linked a study which reflected what the article stated. It seems in hindsight that the articles were conservative with their estimates.

However, the point remains, running v walking a set distance will use more calories but I think we're in agreement there? :)
 
jpaul said:
yes, yes, I agree with you,
but at 2x the energy for running that rebuts the (others) about the same hypothesis
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It's a common misconception i've heard parroted over the years, that walking/running same distance equals same calorie burn.

You could crudely equate it to driving a car an identical 100 miles at a constant 40 miles per hour versus a constant 80 miles per hour, you're not going to use the same fuel at both speeds.
 
Junglist said:
I just had a quick google and it seems they're not really worth it for track bikes. They seem to get thrown off by the ability to pedal backwards which makes the data lose some integrity. I'll definitely look into them when I decide to get a geared road bike though.

I just like Strava to compare to my friends times but most of them don't really use it that religiously so I'm not sure it's worth it to me. I'll use it to track my own progress but for my level i find the basic details in the Apple fitness app seems to tell me most the bits I'm interested in
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sorry mate must admit I’m a bit of a lazy thread follower, didn’t realise it was a track bike.. try looking up Qrings f expensive though
 
Well its been a while but did a camel trail run and feel to have lost my cyclling legs ,wouldnt say i was struggling on the slight incline back but i wasnt enjoying it ,think mt hybrid isnt the lightest plus a box on, bet i was pushing 16 kg ,plus chunky tyres.
found myself looking at ebikes again (thinking distance rather than less effort) but some heavy ones out there ,Ribble do one at 13kg but dropping 2 to 2.5 k not sure
 
Managed to get some vouchers for a £50 repair today the site is working fine now, I thought no way did 50,000 people manage to get on that site the other day, you get two per household so that's nice.
 
WaynelleUK09 said:
Managed to get some vouchers for a £50 repair today the site is working fine now, I thought no way did 50,000 people manage to get on that site the other day, you get two per household so that's nice.
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From my reading it seems it can only be put towards a repair in store. Not towards parts etc?
 
jpaul said:
Boris's £50 isn't going to pay for a power meter (unless I can get 10 vouchers) ... I don't understand why these are so expensive, and have not been commoditized ...
I'd have one any day over disk brakes or electronic gear change.
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The parts to build a power meter are cheap. It’s pretty much a circuit board, accelerometer, temperature gauge and a strain gauge. The reason they cost so much is that making one that’s accurate and not just a random number generator is hard and requires a lot of development time. Making one that works in 99% of situations is simple, but the edge cases need a lot of work. Those development costs have to be recouped.

The price drops every year though as new companies bring them to market. Only a few years ago a power meter was over £1k. Now you can get a single sided one for £250 when they’re on sale.
 
Price doesn't just relate to how much the parts are to make it (and a bit of labour etc).

Most top drawer TT skinsuits are £300+, for what must be some fabric costing 10% at that maybe.

The cost comes from the hours and hours they spend in wind tunnels perfecting it. R&D costs a lot!
 
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