- Location
- Inside my skull
The rolling resistance is proportional to the rider + bike weight and speed. Did you take this into account? Bike rolling resistance website usually tests at 30km/h so you cannot just use those figures directly in your calc.
Did some Hard Maths On What Gives the Most SPEED Gains
- Thread starter itaa
- Start date
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StuAff
Silencing his legs regularly
- Location
- Portsmouth
View attachment 408602
About €8-9,000 gives the most speed gains.....
About 60-70% lower drag than an upright. In other words, for the same power output you need to do 20 mph, you'd be doing 30 or 35.....
About €8-9,000 gives the most speed gains.....
About 60-70% lower drag than an upright. In other words, for the same power output you need to do 20 mph, you'd be doing 30 or 35.....
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classic33
Leg End Member
One on here going for less!
Tigerbiten
Guru
Only on the flat.
On a long draggy uphill slope where you're not in the aerozone then the extra weight kill your speed.
Also without any airflow you have to be careful you don't overheat. If you do overheat then you need to drop your power output which drops your speed even more.
I run into both these problems hill climbing on my bent trike.
Globalti
Legendary Member
My best bike has a set of Rubino Pro Speed tyres that, in reviews, perform best at 110 lbs and above. I normally pump them to 95/100 but last night I tried 105/110 and on my 9.5 miles with 820 feet of climb evening quickie circuit I was 1.5 mph faster than I've ever done it, despite a strong breeze part of the way. Coincidence?
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StuAff
Silencing his legs regularly
- Location
- Portsmouth
Indeed.
Gravity Aided
Legendary Member
- Location
- Land of Lincoln
Fellow at work has a velomobile, and it's amazingly fast.
mjr
Comfy armchair to one person & a plank to the next
- Location
- mostly Norfolk, sometimes Somerset
[QUOTE 5239578, member: 9609"]I guess it will be best to pee at the bottom of a hill.[/QUOTE]
No because then you're carrying no momentum into the next uphill. You want to pee just before the steepest part of the descent, as immortalised in the hymn "go do it on the mountain". They knew a thing about cycling, those country vicars!
No because then you're carrying no momentum into the next uphill. You want to pee just before the steepest part of the descent, as immortalised in the hymn "go do it on the mountain". They knew a thing about cycling, those country vicars!
Ian H
Ancient randonneur
Vapin' Joe
Formerly known as Smokin Joe
- Location
- Bare headed cyclist, Smoker
Ah, them were t'days.Bring back drillium, not sure if it helps but looks damn sexy
I wouldn't like to brake hard with that front tyre clearence -
- Location
- Inside my skull
Now there's a set of thigh muscles to dream of.
