Is it a newly-made road? Maybe the tarmac is still tacky, or there is lots of grit on it? I’d try another road, and perhaps try to wear normal tight-fitting clothing. The weather also plays a role, it’s easier to go faster when it’s warmer.
" I checked the status of you Assioma UNO remotely…"
ㅤ
Single-sided - potential source of uncertainty (error) in your numbers if your LR balance is off.
Out and back 5k section of very flat road, done in the winter ~5c. Bike is an alloy road bike with deep sections.
Watts averaged <280.
Go look at the ride again, he was on a gravel bike with wide gravel tires.
Well if your power is accurate then it goes back to what I just said, that 300 watts just isn’t that fast. Your speed is expected based on physics. Look at this calculator, which spits out an estimation about exactly as you’re reporting that you experience.
Efforts to be aero will be good, but it’s just not going to have that big of a bang for the buck than being a bigger person with more power.
300W at 55W is plenty to go faster than he is. Pretty much the only thing we know for sure in this saga is that his friend is much more aero on his TT bike because he’s going faster at less power (possibly with lower rolling resistance too). OP needs to look into optimizing (of which he appears to have done none). My first Google hit is this which gives you an idea but there are loads of similar articles out there. Think about position too. https://silca.cc/en-gb/blogs/silca/top-10-marginal-gains-to-save-watts-on-the-bike?srsltid=AfmBOooAcjxezdPR1RvcNmzYPG0W-m1AKtHZpAYectKnioGGE4GqncDb
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Your pedaling efficiency, position, equipment or clothing must be pretty poor to average that speed on flat roads.
Either that or your power meter is not accurate.
I have plenty of 100km rides on rolling terrain @ 34kmph and would rarely average over 210 watts.
On the flip side i know club members who ride @ 31kmph @ 250 watts and weight 72kg. When I look at those rides I can only come to the conclusion power meter is not accurate.
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Also TT bike can be influenced strongly by where you are traffic, roundabouts, weather etc, eg on the F2A/10, a short (16.6km) dual carriageway course with just the turn roundabout pulled along by traffic I’ve averaged 43.5kph for 230w but on the equally flat but single carriageway N1/10 with 4 roundabouts for 247w I’ve only averaged 37.3kph. Air pressure on the day can have a massive effect too. I’ve ridden the same 25miler (40.2k) in 56min 59secs but I’ve ridden the same course in nearly 1h2min. You need to be comparing ‘apples with apples’
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300w on rolling terrain on smooth asphalt is about 34kph for me. But I’m 203cm, 102kg and even my most aero position is not going to be very aero. That’s about 100m/10km elevation, for reference.
So if you’re doing the same wattage at a little over half the weight and only 2kph faster, something doesn’t add up.
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I’m not saying that your PM is faulty… but as a Favero owner who has contacted support a few times i recognise that is just their cut and paste email that they send when they havent noticed any obvious errors in the logs.
It’s not the same as confirmation that everything is working and set up correctly with the correct crank length for example.
Personally I think i’d just do a bit more testing - find a nice circular flat and not technical route and report back.
You are very light - and that is no advantage on the flat - its all about the watts.
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Here, I clicked the link of my post before yours then added his power and weight. It’s a matter of physics, not personal opinion. His speed is accurate, according to science.
No wind, flat road, rider weight doesn’t matter much at all… it’s all about the power
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The weight might not matter so much, but the physical size does. A larger person will create more drag and therefore require more power to ride the same speed. Frontal area and all that.
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I agree - OP has a few threads/topics that suggest to me that the PM is reading high for one reason or another… Also being a Favero user - there are plenty of opportunities to get some skewed data.
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What bike/tires are you using? I may have overlooked it in the thread, but it makes a pretty huge difference…
Something is very off here.
I am ~76kg right now and 184cm. When I ride my gravel bike with road wheels on, which has a positive drop, and I sit upright… it only takes me ~240-250w to go 35kph.
You are way smaller than me, but going way slower on the flats for the same power output?
Either you’re wearing a sail, you’re riding mountain bike tires, your power meter is off despite what the company says (common), or some combination of the above.
You mention wearing pants. I assume you weren’t wearing pants in the summer and were wearing normal summer kit.
I’d look at your power to speed ratio from the summer compared to this ride. If it’s much different, then the problem is caused by your clothes or something you did to the bike.
If it’s the same, the problem is more likely your position on the bike or your PM.
Edit: also double check that your “scale factor” or equivalent setting in your head unit isn’t set to a value greater than 1.0.
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What you have there is a model, not ‘science’. That model is making assumptions which may or may not be correct. Given he is by his own admission wearing a bulky jacket and pants, he has a very easy way to make an initial gain. He can probably also use a bike fit, faster tyres, a deep section wheelset, aero helmet etc. If he hasn’t optimized those things already, he’ll go faster, no question about it. What he needs to do is figure out which order will get him the best bang for his buck.
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I got 5km/h faster just by lowering my head today lol. I will try with right jersey in the summer and see how fast I can go.
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That’s great… but there’s no way that simply lowering your head would increase your speed by 13%.
At those speeds that would mean that lowering your head reduced your CdA by ~50% from ~0.6 to ~0.4.
Unless you’re Mr Mackey from South Park, this additional data point just raises further questions in my mind, mmmkay?
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Only getting 19.4km/h off 152W , either you have a drone parachute behind, or the power number isn’t right.
Added as an example, flat road, no wind.
There is absolutely no way your power numbers are correct or you are using the slowest tires and riding an upright city bike. Have you tried riding with someone similar to you side by side? Or comparing power numbers between what you are using and a turbo trainer.
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