- New Planet X Nanolight1 year 8 weeks agoThe original frame can still
The original frame can still be had if you know where to look.
- Your views on...Electric Bikes (Dissertation project)1 year 8 weeks agoAirzound/scoob, your more
Airzound/scoob, your more than welcome to voice your comments in the non-user questionnaire, but I'd appreciate it if you don't make pointless rude remarks to other forum members.
- Video: Where to watch the Tour de France in Yorkshire1 year 8 weeks agoThey neglected to do the
They neglected to do the London stage
- Pantani: The Accidental Death of a Cyclist1 year 8 weeks agoIt's a desperate shame that
It's a desperate shame that Pantani lost his life just as the cycling world was starting to throw off (some of) the shackles of the entrenched doping culture and recognise the depth of the underlying historical issues. No doubt he had personality issues, would have been a hard person to work with and it's difficult to condone how he approached the challenges, but in the context of the world back then he was a welcome sight battling for position on a number of levels.
If you haven't read the Rendell book that forms the backbone to this film, then I strongly recommend that… it's a staggering book of two halves, the rise and fall.
- dhb Goldline Bib Shorts1 year 8 weeks agoI can't work this out either.
I can't work this out either. I could understand if the price was double but these are very well priced against the brand name competition, so why not 5 stars?
- iBike Newton PowerStroke1 year 8 weeks agoSo, it's important to bear in
So, it's important to bear in mind all power-meters have to make assumptions. Further, none of them can measure power directly (that's pretty much impossible).
Power-meters measuring force on a pedal axle, crank arm, crankshaft or wheel axle, all use either electric-resistive or piezo-electric strain gauges to measure the *deformation* of the material. Note that that isn't even the force applied, never mind the power . The applied load is extrapolated from the deformation. To make that they all come with built-in assumptions and approximations about the elasticity of the material the gauge is bonded to, and the quality of the bond. Those assumptions and approximations obviously have error in them, which can change over time.
E.g., other than steel under some limits, the elasticity of alloys slowly changes with repeated load cycles. The bonding of the gauge to the material can vary with manufacture (introducing non-linearities that might not be accounted for in calibration). The elasticity of the material changes with temperature - hence the need for temperature sensors and a table of assumptions in the meter, or in older systems a pre-ride zero-ing calibration (which isn't the most precise). The bonding of the gauge can age with time and load cycles, and change how the material deformation affects the sensor. Etc., etc.
This iBike Newton is as much a "real" power as the others, in that it measures forces - aerodynamic air pressure, atmospheric air pressure, the forces of acceleration - and then extrapolates from those measurements and some assumptions to give a power figure.
It's just silly to try claim this device is somehow not a "real" power-meter. This device makes a different set of assumptions to power-train force meters, and it seems to leave some dynamic variables unmeasured - as do power-train force meters. The question is how this affects accuracy and practicality.
I am quite surprised by just how accurate it appears to be. I'm not sure I'd trust its absolute figure given it can't measure your CdA, even if you did stay in the same position and same angle into the wind the whole ride. However, it seems like it could be useful for comparing rides at least, and even the absolute figures don't seem to be that inaccurate. That's really impressive.
That said, I wouldn't buy it. It's way too expensive. The device isn't worth that money at all. The cost I'm guessing is down to the R&D and software engineering they had to do - which seems impressive. To make this viable they need to amortise that R&D cost over a lot of units, which isn't going to happen at that price point.
It'd be really cool to see more cycle-computers measure aero-dynamic pressure. Wind resistance is the biggest variable when I try measure myself on a local climb. The iBike Newton shows you *can* get a pretty decent power figure out of that measure. I guess the ideal outcome is that some larger-volume cycle-computer manufacturer buys them to acquire the software R&D they've done on that.
- Pantani: The Accidental Death of a Cyclist1 year 8 weeks agoHey - no spoilers. I'm going
Hey - no spoilers. I'm going to see this in a few days time.
- Your views on...Electric Bikes (Dissertation project)1 year 8 weeks agoCheat bikes.
- Video: Where to watch the Tour de France in Yorkshire1 year 8 weeks ago0:15 yes, a little bit
0:15 yes, a little bit stricter here, like, f*** off you're not parking your caravan anywhere that's not a camping site.
02:15 Nice to get some perspective on the hill there, often you just can't tell watching TDF because there's nothing much to measure the steepness against.
During the race the commentators should call out the riders speeds a lot more often along with the gradients. I'll be looking forwards to seeing how bad my times through Epping look in comparison... They will be uploading to Strava right?
- Witness appeal after cyclist killed in HGV collision in Nottingham1 year 8 weeks ago"After seven cyclists died on
"After seven cyclists died on the area's roads in 2012, Nottingham councillors and MPs lobbied Parliament to force cyclists to wear helmets and to ban BMX bikes from being used on the roads".
Terrible. RIP the dead woman cyclist above.
- New Planet X Nanolight1 year 8 weeks agotherevokid wrote:bet it don'ttherevokid wrote:
bet it don't ride like the original - loved that bike
Maybe not - what do you reckon, better ? Much better ?
- Your views on...Electric Bikes (Dissertation project)1 year 8 weeks agoPaul_C wrote:done... e-bikePaul_C wrote:
done... e-bike user
- RCUK game1 year 8 weeks agoDid we come 2nd in the end? I
Did we come 2nd in the end? I think I ended up 44th or something, can't remember exactly.
There is also another one which looks pretty good at Scorito.
- New Planet X Nanolight1 year 8 weeks agobet it don't ride like the
bet it don't ride like the original - loved that bike
- Cycle Shoes - Numb Toes1 year 8 weeks agometatarsul buttons .... Most
metatarsul buttons .... Most spesh insoles have some support, but adding a
little more helped me with exactly the same problem.
- Your views on...Electric Bikes (Dissertation project)1 year 8 weeks agodone... e-bike user
done... e-bike user
- Witness appeal after cyclist killed in HGV collision in Nottingham1 year 8 weeks agoMy thoughts go out to the
My thoughts go out to the family.
I ride this road as part of my daily commute. It's busy and not a nice junction.
Had the day off work yesterday but drove past mid morning whilst the road was still closed. Felt numb when found out someone had died.
- Tour Tech 2014: Mark Cavendish’s (special) Specialized Venge1 year 8 weeks agoha, I ride a 49 too. I
ha, I ride a 49 too. I wonder if he gets the same comments about riding 'a kids bike' like what I do...
- Chris Froome ready to defend Tour de France title, insists he had no say in Bradley Wiggins’ omission (+ video)1 year 8 weeks agoSky are in cycling to win,
Sky are in cycling to win, simple as that and to be honest as much as i like Wiggins, he's a brilliant TT rider, but hardly what you would call a mile after mile front of the peloton climber like Nieve or Lopez which is what is needed to win a GT.
- British cyclist killed in head-on collision as he descends Alpe d'Huez1 year 8 weeks agoGotta love internet
Gotta love internet speculation!
I'm going to offer a controversial view: while I'm sure his family will be devastated, and my sympathy goes out to them, this isn't sad news. People die all the time: this chap got to take the exit door while doing something that (my speculation) he loved. Good on him.
- Tour Tech 2014: Mark Cavendish’s (special) Specialized Venge1 year 8 weeks agoThis bike is clearly a bit
This bike is clearly a bit Marmite...
Personally, I don't like that colour scheme at all (perhaps better in the flesh than in photos?) - I *much* preferred the previous one
- iBike Newton PowerStroke1 year 8 weeks agoweenyd wrote:4). Trainingweenyd wrote:
4). Training with power makes me ride harder and more consistently on every ride. It'll make you faster than a new set of 404s, so why all the hate?
I'm not seeing much hate on this thread about using power - some questioning of the exact nature of the results from this particular meter (and the reasons for them), which seems reasonable.
- Video: Where to watch the Tour de France in Yorkshire1 year 8 weeks agoLots of room on the hillsides
Lots of room on the hillsides for which most farmers are charging a fiver for the pleasure of standing in. How they will manage to control that with the number of people expected I have no idea. Certainly on Buttertubs, there are signs all over.
- 100 Tours: 10 iconic moments (+ videos)1 year 8 weeks agoIn the twisted logic of pro
In the twisted logic of pro cycle history it's about personality not cut off. It's more acceptable to have doped if you had some panache like Anquetil. Unfortunately Indurain's tactics and personality were dull even when (allegedly) enhanced.
I suspect if Froome was busted for doping many of us would feel cheated that he hasn't the flawed charisma of Armstrong.
- British cyclist killed in head-on collision as he descends Alpe d'Huez1 year 8 weeks agoHoester wrote:As exhileratingHoester wrote:
As exhilerating as fast descending is, as this news so terribly confirms, accidents however they transpire, can be fatal. Condolences to all.
After a few minor accidents, I often find myself now asking 'Am I willing to let an accident on this descent cause me to be off the bike for an extended period through injury?'. The answer is always 'no'. My approach to the descent then changes accordingly.
I am in no way inferring blame to anyone in this particular incident. We can take many precautions, but descending mountains on a bike will always carry some inherent danger.
Massive condolences to the deceased and their family, and I agree. As a result, I make a wuss descender, but that's not why I ride anyway. If the driver wasn't at fault, then my sympathies to them also, because those nightmares probably aren't going away anytime soon.