Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the July Giveaway for a brand new 26" Thruster® Street Style BMX Cruiser Bicycle

New product launch: WIN an innovative aeroe Spider Rear Rack


Is it tires
#1
Took a ride on my MB today on a trail. it was 88 degrees here in Texas. still. It was err... challenging. Got home and realized I lost something so I took my road bike down the same path since it was hard packed dirt. It was a breeze what a difference.

Now the MB is maybe 8lbs heavier and has dirt tires, is it mostly the tires or both extra weight and tires. I mean its only about 8lbs. Its 26X1.95 mb and 27X1.25 road tires.

Any old timers still out there to chime in. :-))
Never Give Up!!!
  Reply
#2
I would say tire and wheel differences certainly play a role as long as the gearing was there for proper cadence. But more so the weight. To move a given weight no matter the person or size of the person, the energy it takes is the same for everyone. So when asked the question" Is it better to trim the weight off of me or the bike" The answer is trim the weight off the bike. Liken it to this. carrying a 30lb garbage can down a long driveway or a 15lb can. Of course the 15lb is easier. You see the can does not know or care about the energy source. the only thing constant is the weight and energy it takes to move it. Taking the weight off of me does not change the amount of energy to move a given weight of and object or bicycle in this case.
There are two kinds of people in the world, "Those who help themselves to people, and those who help people!"
  Reply
#3
(10-14-2016, 10:57 PM)painkiller Wrote:  I would say tire and wheel differences certainly play a role as long as the gearing was there for proper cadence. But more so the weight. To move a given weight no matter the person or size of the person, the energy it takes is the same for everyone. So when asked the question" Is it better to trim the weight off of me or the bike" The answer is trim the weight off the bike. Liken it to this. carrying a 30lb garbage can down a long driveway or a 15lb can. Of course the 15lb is easier. You see the can does not know or care about the energy source. the only thing constant is the weight and energy it takes to move it. Taking the weight off of me does not change the amount of energy to move a given weight of and object or bicycle in this case.

^^^^^^^^^^^^^^^

Good point. I was reading up on rolling resistance and came upon some counter intuitive info such as that a fatter tire given similar characteristics has lower rolling resistance and that in dirt a softer tire rolls better as it deflects more. However it was also said that knobby tires have greater rolling resistance. Like MB tires.
Sufficient Gearing was available on both bikes. MB 21, RB 12. I really do love the vintage springy Fuji del ray RB. Its so easy to go fast on it.
Never Give Up!!!
  Reply


Forum Jump:

[-]
10 Latest Posts
RD Alignment
Today 02:13 AM
Road Biking Mama
Today 02:09 AM
Post a photo for aeroe Spider Rear Rack
Yesterday 09:40 PM
26" Thruster® Street Style BMX | July 20...
Yesterday 09:35 PM
Dork disc - remove it or keep it?
Yesterday 08:39 PM
Creaky crank with play and loosening
Yesterday 11:21 AM
2020 road cycling season
Yesterday 07:18 AM
FD cable pull on opposite side of frame
Yesterday 04:18 AM
60s Viner Repainted..?
07-08-2020 06:23 PM
budget speedometer
07-08-2020 10:44 AM

[-]
Top 5 Posters This Month
no avatar 1. Jesper
74 posts
no avatar 2. CharleyFarley
21 posts
no avatar 3. Painkiller
14 posts
no avatar 4. Papa Dom
10 posts
no avatar 5. G_M
8 posts