Ratty Posted February 23, 2015 Posted February 23, 2015 Was she maybe sitting in your slip stream and then got shot passed? (I do that, its fun :-) ) Once you have the speed its easier to maintain.
SwissVan Posted February 23, 2015 Posted February 23, 2015 What bike does Jaxtun ride ...if it was Jaxtun she probably smoked u going up as well
Rapunzel Posted February 23, 2015 Posted February 23, 2015 Hi,Was she realy old or just a bit haggard from a wild lifestyle. Possibly Klippies and coke instead of Powerade in her bottle and home grown weed instead of the usual siggies. Prehaps she was still deciding when to go to bed!!!!Just a thoughtSargeyeah - what constitutes old?
Hennie VR Posted February 23, 2015 Posted February 23, 2015 Smooth = Fast Learn to read the trail and take the smoothest lines. This will help you to speed things up and save energy.
Nick G Posted February 23, 2015 Posted February 23, 2015 Its got nothing to do with weight when descending (Big misconception here) Newton's law of Gravity states that 2 objects of differing mass (for example 1 object could be 10Kg and the other object could be 100Kg) thrown off a cliff - at the same time - will hit the earth at exactly the same time. Point being is that no matter what you weigh you can descend at the same rate as anyone else...provided of course you give the exact same effort on the crank as they do. Anyway - I descended down Contermans Kloof from the top at just under 60km/h and I only weigh 74kg and i was on a Carbon 29 SPEZ EPIC at the time weighing in at about 11kg's.With MTB'ing and bikes it makes a huge difference as to the type of bike u using as well as going downhill on an EPIC is way more difficult to control than say a GIANT Trance because the Trance is heavier so you would "feel" more planted on eath whereas on the SPEZ EPIC it was extremely difficult for me to keep it in a straight line at that speed What you need to do is "let go" of your fear (and your brakes as previously stated), but I do also realize that its a process to learn HOW to descend properly Good luck mate (oh, and don't forget to be right off the back of your saddle...push the bike forward basically)
RocknRolla Posted February 23, 2015 Posted February 23, 2015 29 SPEZ EPIC Though the thread could do with another mention....
DoubleJ Posted February 24, 2015 Author Posted February 24, 2015 Went back yesterday to check if a rematch was going to happen....she couldn't make it seeing that they had a reading at her book club.....more training time for me.
Captain Fastbastard Mayhem Posted February 24, 2015 Posted February 24, 2015 Its got nothing to do with weight when descending (Big misconception here) Newton's law of Gravity states that 2 objects of differing mass (for example 1 object could be 10Kg and the other object could be 100Kg) thrown off a cliff - at the same time - will hit the earth at exactly the same time. Point being is that no matter what you weigh you can descend at the same rate as anyone else...provided of course you give the exact same effort on the crank as they do. Anyway - I descended down Contermans Kloof from the top at just under 60km/h and I only weigh 74kg and i was on a Carbon 29 SPEZ EPIC at the time weighing in at about 11kg's.With MTB'ing and bikes it makes a huge difference as to the type of bike u using as well as going downhill on an EPIC is way more difficult to control than say a GIANT Trance because the Trance is heavier so you would "feel" more planted on eath whereas on the SPEZ EPIC it was extremely difficult for me to keep it in a straight line at that speed What you need to do is "let go" of your fear (and your brakes as previously stated), but I do also realize that its a process to learn HOW to descend properly Good luck mate (oh, and don't forget to be right off the back of your saddle...push the bike forward basically)erm, you're missing one big factor here. It's got to do with air & ground resistance. Newton's law states that, yes, but it further interpolates a zero-resistance environment. In this case, the heavier object overcomes the resistance on the ground that much easier, and begins to accelerate faster once the initial resistance to motion has been overcome.
SAGecko Posted February 24, 2015 Posted February 24, 2015 Its got nothing to do with weight when descending (Big misconception here) Newton's law of Gravity states that 2 objects of differing mass (for example 1 object could be 10Kg and the other object could be 100Kg) thrown off a cliff - at the same time - will hit the earth at exactly the same time. IS THIS TRUE!!!!! I've always believed that a heavier rider will roll faster on a downhill than a lighter rider. Now you tell me otherwise (Not sure about the two objects dropped explanation when it comes to cycling....) EDIT: I see the Captain got in first there and explained it all wif big words like "interpolates"
Captain Fastbastard Mayhem Posted February 24, 2015 Posted February 24, 2015 IS THIS TRUE!!!!! I've always believed that a heavier rider will roll faster on a downhill than a lighter rider. Now you tell me otherwise (Not sure about the two objects dropped explanation when it comes to cycling....) EDIT: I see the Captain got in first there and explained it all wif big words like "interpolates" If the 2 items are exactly the same shape & profile, then yes. As soon as the shape changes, then it must be a resistance-free environment for it to be applicable. But yes - without any resistance (iow in a vacuum) this is correct. One feather will fall just as fast as a brick.
SAGecko Posted February 24, 2015 Posted February 24, 2015 If the 2 items are exactly the same shape & profile, then yes. As soon as the shape changes, then it must be a resistance-free environment for it to be applicable. But yes - without any resistance (iow in a vacuum) this is correct. One feather will fall just as fast as a brick. I always thought this to be the case wrt shape and profile, but I am always ready to listen to a new hypothesis. (And I enjoy a good argument....... as you may have noticed )
Mads Posted February 24, 2015 Posted February 24, 2015 https://www.youtube.com/watch?v=-cCt9JobjOg Feathers And Bowling Balls Fall At Same Rate In World's Largest Vacuum
Captain Fastbastard Mayhem Posted February 24, 2015 Posted February 24, 2015 https://www.youtube.com/watch?v=-cCt9JobjOg Feathers And Bowling Balls Fall At Same Rate In World's Largest Vacuum Precisely. I'm confused by the use of the word "fascinating" in that headline though - this was grade 8 Physical Science. We did it with a very large helium-filled container (when you ignite the flammable substance, it takes up all the air int he cylinder, effectively causing a vacuum) and did the experiment with an eraser and a piece of paper or something.
Nayr Posted February 24, 2015 Posted February 24, 2015 If the 2 items are exactly the same shape & profile, then yes. As soon as the shape changes, then it must be a resistance-free environment for it to be applicable. But yes - without any resistance (iow in a vacuum) this is correct. One feather will fall just as fast as a brick. Agreed...Newton's theory is only applicable without any varying factors and don't think it applies to two bikes rolling down a road as terminal velocity will never be reached. I could be wrong but a heavier rider once rolling and avoiding initial inertia, will accelerate towards terminal velocity quicker than a lighter rider... I've done this test with my riding partner who is 20kgs lighter than me. I can roll downhill where he has to pedal to keep up with me... The other benefit is carrying momentum into a hill after a downhill, as a heavier rider i seem to be able to carry momentum further up a hill...
Mads Posted February 24, 2015 Posted February 24, 2015 So coming back to the thread. It has nothing to do with weight or shape. I think it has something to do with equipment and technique. That old lady is probably reading all about descending techniques in her book club...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.