Time Conversion Accuracy

Former Member
Former Member
Ok, so i'm wondering how accurate the below time conversion tool is (any opions?) www.swimmingworldmagazine.com/.../conversions.asp Here is why i'm asking... If this tool is accurate it means that during my first meet this past weekend I made the National cut (based on 2011 SCY time standars) in the 50F and 100 BR!! This is very exciting to me and makes me want to start swimming more frequently and seriously. This is what the conversion tool indicated ... 50F LCM @ 33.21 = 50F SCY 28.56 (NAT QUAL time 29.14) 100 BR LCM @ 1:34.85 = 100 BR SCY 1:21.19 (NAT QUAL time 1:22.87) I think my fever has returned! Man how I have missed this sport! Also, does USMS accecpt conversion times for qualification?
Parents
  • On this topic, my kids are at a swim meet today and unfortunately I'm working so I'm getting the results from my wife. My daughter (9) could care less but my son (12)is very motivated and wanted to make cuts. Before this meet he asked me to help him with goals and Ii tried to give him reasonable expectations by multiplying his previous best SCY times by 1.09361 (the distance factor only), telling him it's not competely accurate. Uh-oh, SCY*1.094 != LCM by any stretch. Yes, the distance is 1.094 times farther, but there are complicating factors: First, there are fewer turns. Unless the turns are very very slow, turning is faster than swimming. Second, there is the fatigue factor. Even the most fit swimmer can't cover 1.094 times the distance in 1.094 times the time at race pace. Third, the strategy is different. I've heard some people say SCY and LCM are different sports. That seems like hyperbole to me, but they are significantly different races. For SCY to SCM the number of turns is the same, but the fatigue factor is still there. For a ballpark estimate, I suggest: For SCY to SCM: multiply by 1.11. For SCY to LCM, multiply by 1.11 and add 1.1s for each missing turn. In my experience, the Swimming World time converter: www.swimmingworldmagazine.com/.../conversions.asp works reasonably well for SCY SCM and for SCM LCM, but not for SCY LCM. To go between SCY and LCM, do it in two steps, converting to SCM first. (A previous poster pointed out that it is not internally consistent.) The Great Bay Masters time converter is internally consistent: www.greatbaymasters.org/convert.html Here is one by Colorado Swimming: www.csi.org/coursealti.aspx Here is one by Overlook Swim Team geared to 25s: overlookswimteam.org/.../conversion.html He's swam two races so far today and apparently is very disappointed so far from what my wife says. He got 42 seconds on the 50M back, qualifying was 41.6. I want to cheer him up by saying that converts to 34.56 based on the swimming magazine website converter (his previous best was 37.8) and focus on his improvement. Using just the distance factor that comes to 38.4 (don't want to tell him that, lol). Does 34.56 sound reasonable? I want to cheer him up without lying. Good news, he made the cut in the 50 *** (48.2). Swim mag converts it to 41.11, previous best was 43.52 SCY. 34-mid for 50 SCY back based on 41.6 for a LCM 50 back sounds optimistic to me. Using the Swimming World converter in two stages converts the 41.6 LCM to 36.19 SCY. Using my 1.11 scaling factor +1.1s/turn converts the 41.6 LCM to 36.49 SCY.
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  • On this topic, my kids are at a swim meet today and unfortunately I'm working so I'm getting the results from my wife. My daughter (9) could care less but my son (12)is very motivated and wanted to make cuts. Before this meet he asked me to help him with goals and Ii tried to give him reasonable expectations by multiplying his previous best SCY times by 1.09361 (the distance factor only), telling him it's not competely accurate. Uh-oh, SCY*1.094 != LCM by any stretch. Yes, the distance is 1.094 times farther, but there are complicating factors: First, there are fewer turns. Unless the turns are very very slow, turning is faster than swimming. Second, there is the fatigue factor. Even the most fit swimmer can't cover 1.094 times the distance in 1.094 times the time at race pace. Third, the strategy is different. I've heard some people say SCY and LCM are different sports. That seems like hyperbole to me, but they are significantly different races. For SCY to SCM the number of turns is the same, but the fatigue factor is still there. For a ballpark estimate, I suggest: For SCY to SCM: multiply by 1.11. For SCY to LCM, multiply by 1.11 and add 1.1s for each missing turn. In my experience, the Swimming World time converter: www.swimmingworldmagazine.com/.../conversions.asp works reasonably well for SCY SCM and for SCM LCM, but not for SCY LCM. To go between SCY and LCM, do it in two steps, converting to SCM first. (A previous poster pointed out that it is not internally consistent.) The Great Bay Masters time converter is internally consistent: www.greatbaymasters.org/convert.html Here is one by Colorado Swimming: www.csi.org/coursealti.aspx Here is one by Overlook Swim Team geared to 25s: overlookswimteam.org/.../conversion.html He's swam two races so far today and apparently is very disappointed so far from what my wife says. He got 42 seconds on the 50M back, qualifying was 41.6. I want to cheer him up by saying that converts to 34.56 based on the swimming magazine website converter (his previous best was 37.8) and focus on his improvement. Using just the distance factor that comes to 38.4 (don't want to tell him that, lol). Does 34.56 sound reasonable? I want to cheer him up without lying. Good news, he made the cut in the 50 *** (48.2). Swim mag converts it to 41.11, previous best was 43.52 SCY. 34-mid for 50 SCY back based on 41.6 for a LCM 50 back sounds optimistic to me. Using the Swimming World converter in two stages converts the 41.6 LCM to 36.19 SCY. Using my 1.11 scaling factor +1.1s/turn converts the 41.6 LCM to 36.49 SCY.
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