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Efficiency of Road v MTB _On the Road_
Guessing wildly I'd say a road bike is almost 2X more efficient, i.e., 60 on a fully sprung mountain bike burns as many calories as 100 on a road bike.
Any real studies on this? Bret Cahill |
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#2
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Efficiency of Road v MTB _On the Road_
On 15/11/17 04:45, Bret Cahill wrote:
Guessing wildly I'd say a road bike is almost 2X more efficient, i.e., 60 on a fully sprung mountain bike burns as many calories as 100 on a road bike. Any real studies on this? Only anecdotal. I had a bike where I swapped wheels for road and off road. My reckoning was that when running the off road tyres on "pavement", the extra effort required me to go two sprockets lower than with touring tyres. So roughly speaking, the speed difference was 16/20 for the same effort. The gain in using a road bike was not enough to notice except up hill where the steeper angles seemed to put me in a better position over the pedals. But it gave me less confidence to go as fast downhill. |
#3
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Efficiency of Road v MTB _On the Road_
On 15.11.2017 17:45, Bret Cahill wrote:
Guessing wildly I'd say a road bike is almost 2X more efficient, i.e., 60 on a fully sprung mountain bike burns as many calories as 100 on a road bike. Any real studies on this? Bret Cahill A quick google produced: https://physics.stackexchange.com/qu...-mountain-bike (one person's calculations involving a road bike and some suppositions about mountain bikes) https://bicycles.stackexchange.com/q...ad-bike-speeds Neither of these seem to be "real" studies, but the consensus seems to be that mountain bikes require about 15% more power from the rider than road bikes. Maybe if I had the time a slow google may find more appropriate results. |
#4
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Efficiency of Road v MTB _On the Road_
Guessing wildly I'd say a road bike is almost 2X more efficient, i.e., 60 on a fully sprung mountain bike burns as many calories as 100 on a road bike.
Any real studies on this? Bret Cahill A quick google produced: https://physics.stackexchange.com/qu...-mountain-bike (one person's calculations involving a road bike and some suppositions about mountain bikes) https://bicycles.stackexchange.com/q...ad-bike-speeds Neither of these seem to be "real" studies, but the consensus seems to be that mountain bikes require about 15% more power from the rider than road bikes. It would be higher than 15% even if you weren't dragging a brake w/ under inflated tires on fluffy sand. I know this from the additional meal I need to eat the day after riding the MTB. I'll try another MTB. If no improvement then I'll start photographing the machines with IR in the dark after a ride. The waste heat is going somewhere. Bret Cahill |
#5
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Efficiency of Road v MTB _On the Road_
On 15/11/2017 09:47, Peter Keller wrote:
On 15.11.2017 17:45, Bret Cahill wrote: Guessing wildly I'd say a road bike is almost 2X more efficient, i.e., 60 on a fully sprung mountain bike burns as many calories as 100 on a road bike. Any real studies on this? Bret Cahill A quick google produced: https://physics.stackexchange.com/qu...-mountain-bike (one person's calculations involving a road bike and some suppositions about mountain bikes) https://bicycles.stackexchange.com/q...ad-bike-speeds Neither of these seem to be "real" studies, but the consensus seems to be that mountain bikes require about 15% more power from the rider than road bikes. Anecdotally, I'd say that's a bit low, using low-mid range bikes as examples. I recently bought a s/h Specialised Cirrus 'hybrid sports' bike after using a mountain bike (mainly Specialised Rockhopper) for about 10 years on my 2 mile hilly commute. Seems like a lot less effort for the same speed - maybe 25%. -- Cheers, Rob |
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