Your question is ill posed. It's a bit like asking, "How long is a piece of rope?" There are too many things unknown and too many factors to even guess. The one thing you can be certain of is that it will be dependent on how and how much you train. I suggest you do some web surfing to find websites about training. There are quite a few people on this forum that have good knowledge and ideas on training, but for those people to help you need to provide more information about yourself, your current condition, the rides you typically do, what the terrain is like where you live, and etc. Note that all of your training doesn't have to be on the bike. Cross training would serve you very well.Molala2 said:i am now riding at 27km/h for 20 km, My target is to ride at 44km/h for 40 km. how long will it take for me? i have been riding since novermber last year, when i was able to ride at around 17km/h for 10 km
what is the difference between riding at 44kpn alone and in a bunch??Originally Posted by Monroe71 .
Riding at 44kph in a bunch is a very different prospect to riding 44kph alone.
Alienator is right - it is a 'how long is a piece of rope' question.
Still - great and motivating to have a definite goal to move toward. If you want to get there faster you should look fo a long descent
From an aerodynamic standpoint, the rider in the front is doing 100% of the work to break the wind, the 2nd guy is doing 85% and the 3rd guy in the line is doing 70%. At 30mph, 85% of a riders energy is used to overcome the wind (don't quote me). And imo it's one of the reasons that makes cycling so much more exciting than running.Originally Posted by Molala2 .
what is the difference between riding at 44kpn alone and in a bunch??
Don't neccesarily equate your TT speed with how you will do in races. I placed dead last in a Cat4 time trial last season - I placed 85th out of 85 riders. I think some Cat5's beat me. The following weekend I finished 6th in a mass start race with a maxed out field of 110 riders. How's that you say? Experience, wheelsucking, and good finishing speed... and some luck.Originally Posted by Molala2 .
thanks for ur reply tomw.
if i can achieve i will certain stand a place in local races. if i cant i can still enjoy faster riding....so i will just work on it and see what will happen....
It will require about 3.6x more power, in fact. The rule of thumb for riding in a pack is that it will save you about 1/3 of the energy of riding by yourself at the same speed. Note that's just a rule of thumb. At 27kph, roughly 75% of your power goes to overcoming aero drag. At 44kph, assuming the same riding position, about 90% of your power goes to overcoming drag.maydog said:44kph for 40k is an impressive feat. Even with training, not many have to gifts to do it. I don't, after 3 years of pretty intense riding I am struggling to get a 38 to 39kph hour TT average. All else equal, going from 27 to 44kph on a flat solo effort will require more than 3 times your current power output. Likely you will not be able to do it with training alone - you will need dedicated time trial gear. In addition to training your fitness, you need to be working on getting aerodynamic.
All else being equal the difference in the power required to go 44kph on flat ground when your 220 lbs (w/ 14.5lb bike) and when your 160lbs (with same bike) is a whopping 13 watts, not a lot. Lucky for you, all things aren't equal. As you lose weight your size goes down and so does the aerodynamic area presented to the wind, and thus your aero drag goes down. With your decrease in weight, your cardiovascular system will work more efficiently, freeing up some endurance and/or power. Going uphill will be loads easier. For instance if you're going up a 5% incline at 8mph and you weight 220 (same bike), you'll have to put out 322W. Going up that same slope at the same speed, on the same bike, but with your weight at 160, you'll only need to put out 242W, 25% less. The power savings get even bigger the steeper the slope goes.Molala2 said:thanks for the reminder everyone, will it be a little bit easier if i lost 60 pounds? i have scope for that...
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