diff --git a/rowers/dataprep.py b/rowers/dataprep.py
index 4f62e80d..ab3bdd13 100644
--- a/rowers/dataprep.py
+++ b/rowers/dataprep.py
@@ -83,7 +83,7 @@ queuelow = django_rq.get_queue('low')
 queuehigh = django_rq.get_queue('default')
 
 from rowsandall_app.settings import SITE_URL
-from rowers.mytypes import otwtypes
+from rowers.mytypes import otwtypes,otetypes
 
 from rowers.database import *
 from rowers.opaque import encoder
@@ -998,6 +998,8 @@ def save_workout_database(f2, r, dosmooth=True, workouttype='rower',
     if dosummary:
         summary = row.allstats()
 
+    
+
     timezone_str = 'UTC'
     try:
         workoutstartdatetime = timezone.make_aware(row.rowdatetime)
@@ -1050,6 +1052,9 @@ def save_workout_database(f2, r, dosmooth=True, workouttype='rower',
     maxhr = np.nan_to_num(maxhr)
     averagehr = np.nan_to_num(averagehr)
 
+    dragfactor = 0
+    if workouttype in otetypes:
+        dragfactor = row.dragfactor
 
     t = datetime.datetime.strptime(duration,"%H:%M:%S.%f")
     delta = datetime.timedelta(hours=t.hour, minutes=t.minute, seconds=t.second)
@@ -1079,6 +1084,7 @@ def save_workout_database(f2, r, dosmooth=True, workouttype='rower',
     w = Workout(user=r, name=title, date=workoutdate,
                 workouttype=workouttype,
                 boattype=boattype,
+                dragfactor=dragfactor,
                 duration=duration, distance=totaldist,
                 weightcategory=weightcategory,
                 adaptiveclass=adaptiveclass,
diff --git a/rowers/models.py b/rowers/models.py
index 2f8c8844..1201fdd6 100644
--- a/rowers/models.py
+++ b/rowers/models.py
@@ -2536,6 +2536,7 @@ class Workout(models.Model):
                                 max_length=100)
     distance = models.IntegerField(default=0,blank=True)
     duration = models.TimeField(default=1,blank=True)
+    dragfactor = models.IntegerField(default=0,blank=True)
     trimp = models.IntegerField(default=-1,blank=True)
     rscore = models.IntegerField(default=-1,blank=True)
     hrtss = models.IntegerField(default=-1,blank=True)
@@ -2960,6 +2961,7 @@ class WorkoutForm(ModelForm):
                   'distance',
                   'workouttype',
                   'boattype',
+                  'dragfactor',
                   'weightcategory',
                   'adaptiveclass',
                   'notes',
diff --git a/rowers/templates/workout_form.html b/rowers/templates/workout_form.html
index 047a8a2c..40346ee1 100644
--- a/rowers/templates/workout_form.html
+++ b/rowers/templates/workout_form.html
@@ -32,7 +32,18 @@ $( document ).ready(function() {
         } else { 
             $('#id_boattype').toggle(false);
             $('#id_boattype').val('1x');        
-        }
+}
+        if (
+            $(this).val() == 'rower'
+            || $(this).val() == 'dynamic'
+            || $(this).val() == 'slides'
+        ) {
+            $('#id_dragfactor').toggle(true);
+        } else { 
+            $('#id_dragfactor').toggle(false);
+            $('#id_dragfactor').val('0');        
+}
+
 });
 $('#id_workouttype').change(); 
 });
diff --git a/rowers/tests/test_uploads.py b/rowers/tests/test_uploads.py
index b691dcb7..27264a58 100644
--- a/rowers/tests/test_uploads.py
+++ b/rowers/tests/test_uploads.py
@@ -100,6 +100,7 @@ class ViewTest(TestCase):
             'adaptiveclass':'PR1',
             'workouttype':'rower',
             'boattype':'1x',
+            'dragfactor':'112',
             'private':True,
             'notes':'noot mies',
             }
diff --git a/rowers/tests/testdata/testdata.csv.gz b/rowers/tests/testdata/testdata.csv.gz
index f6dfa2b2..c1c85bf9 100644
Binary files a/rowers/tests/testdata/testdata.csv.gz and b/rowers/tests/testdata/testdata.csv.gz differ
diff --git a/rowers/views/workoutviews.py b/rowers/views/workoutviews.py
index d5ca9e42..c95cfdda 100644
--- a/rowers/views/workoutviews.py
+++ b/rowers/views/workoutviews.py
@@ -3345,6 +3345,7 @@ def workout_edit_view(request,id=0,message="",successmessage=""):
             distance = form.cleaned_data['distance']
             private = form.cleaned_data['private']
             notes = form.cleaned_data['notes']
+            newdragfactor = form.cleaned_data['dragfactor']
             thetimezone = form.cleaned_data['timezone']
 
             try:
@@ -3416,6 +3417,11 @@ def workout_edit_view(request,id=0,message="",successmessage=""):
             row.timezone = thetimezone
             row.plannedsession = ps
 
+            dragchanged = False
+            if newdragfactor != row.dragfactor:
+                row.dragfactor = newdragfactor
+                dragchanged = True
+
             try:
                 row.save()
             except IntegrityError:
@@ -3427,6 +3433,12 @@ def workout_edit_view(request,id=0,message="",successmessage=""):
             # change data in csv file
             
             r = rdata(row.csvfilename)
+            if dragchanged:
+                try:
+                    r.change_drag(newdragfactor)
+                except AttributeError:
+                    pass
+                    
             if r == 0:
                 return HttpResponse("Error: CSV Data File Not Found")
             r.rowdatetime = startdatetime