first bicycle on Mars
02-25-21 | 05:48 AM
#26
Senior Member
Joined: Jun 2013
Posts: 5,972
Likes: 1,397
From: SW Fl.
Bikes: 1999 DAHON Mariner, Day6 Semi Recumbent "FIREBALL", 1981 Custom Touring Paramount, 1983 Road Paramount, 2013 Giant Propel Advanced SL3, 2018 Specialized Red Roubaix Expert mech., 2002 Magna 7sp hybrid, 1976 Bassett Racing 45sp Cruiser
02-25-21 | 12:01 PM
#27
Thread Starter
n00b
Joined: Jan 2008
Posts: 1,397
Likes: 467
From: Austin, TX
Bikes: Surly Karate Monkey, Twin Six Standard Rando
I wonder if Moonmen Bikes has some expertise here.
that will never work. there's not yet any craft breweries and beard oil makers on that planet yet.
that will never work. there's not yet any craft breweries and beard oil makers on that planet yet.
02-25-21 | 01:01 PM
#28
The dropped
Joined: Oct 2018
Posts: 2,182
Likes: 1,055
From: Columbus, OH
Bikes: Pake C'Mute Touring/Commuter Build, 1989 Kona Cinder Cone, 1995 Trek 5200, 1973 Raleigh Super Course FG, 1969 Raleigh Superbe, 1986 Miyata Nine : 1960/61 Montgomery Ward Hawthorne "thrift" 3 speed, by Hercules (sold), 1966 Schwinn Deluxe Racer (sold)
Austin must be a hell of a place.
02-25-21 | 03:58 PM
#31
Senior Member
Joined: Mar 2016
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From: South Italy
Bikes: BMC SLR01; Cannondale Trail; Custom steel gravel.... plus 5 vintage
02-25-21 | 04:26 PM
#32
The dropped
Joined: Oct 2018
Posts: 2,182
Likes: 1,055
From: Columbus, OH
Bikes: Pake C'Mute Touring/Commuter Build, 1989 Kona Cinder Cone, 1995 Trek 5200, 1973 Raleigh Super Course FG, 1969 Raleigh Superbe, 1986 Miyata Nine : 1960/61 Montgomery Ward Hawthorne "thrift" 3 speed, by Hercules (sold), 1966 Schwinn Deluxe Racer (sold)
That's the largest known planetary mountain in the Solar System. It stands 21 km above the plains surrounding it. Mauna Kea, from the ocean floor to the highest point is half that height, despite being the tallest mountain from base to top on Earth. Someone write the petition to NASA to include such a mission in the planned manned missions to Mars? I have my pen ready.
02-25-21 | 04:30 PM
#33
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Joined: Dec 2019
Posts: 1,196
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This guy's thought it through in some detail:
https://anselm.medium.com/the-case-f...s-98ff8350c96f
I'm not sure that you need more traction on steep climbs. Yes there's less force pushing you into the road but you also need less force to climb the hill.
What will catch out riders not used to the Martian conditions is the fact that while your gravitational mass is 38% of what it is on earth, your inertial mass is the same. This means you will really feel like you're struggling for grip on corners. The bikes will need very good brakes for this reason, also because there is very limited atmosphere to cool the brakes down.
https://anselm.medium.com/the-case-f...s-98ff8350c96f
I'm not sure that you need more traction on steep climbs. Yes there's less force pushing you into the road but you also need less force to climb the hill.
What will catch out riders not used to the Martian conditions is the fact that while your gravitational mass is 38% of what it is on earth, your inertial mass is the same. This means you will really feel like you're struggling for grip on corners. The bikes will need very good brakes for this reason, also because there is very limited atmosphere to cool the brakes down.
Last edited by guy153; 02-25-21 at 04:44 PM.
02-27-21 | 09:44 PM
#34
Senior Member
Joined: Apr 2005
Posts: 17,196
Likes: 761
From: Ann Arbor, MI
Bikes: 1980 Masi, 1984 Mondonico, 1984 Trek 610, 1980 Woodrup Giro, 2005 Mondonico Futura Leggera ELOS, 1967 PX10E, 1971 Peugeot UO-8
Gotta look at radiation effects on the rubber tires, however. Maybe bike tires can be made out of stainless mesh, like for the Rover and Perseverance.
