Showing posts with label comparison. Show all posts
Showing posts with label comparison. Show all posts

Monday, January 29, 2018

Comparison of weight of groupsets for the weighty weenies

Wheels of Happiness

Rizal Philippines
January 29,2017

Image result for sram groupset weights
                                            Magaan subalit mahal   mga P140,000 php Red 22




Image result for sram groupset weights

I compiled a list of the weight  of the groupsets. I am repeating that if you want to a have light bike (a light bike translates into an efficient and sometimes fast bike)  If you must upgrade, its not only the looks or the brand but consider  the weight:(cost to weight ratio)

        1.    Frame sets

          Not all carbon frames are light review of a carbon frame circa 2011 showed a carbon built bike
          weighing 8kg +.  The Bianchi of some of RBP are said to be tipping the scales at 8.5 kg.  Some alum
          bikes by Cannondale, Giant Merida are light.

     2.  Wheelsets

         Typical wheelsets weigh over 2 kg.  Some more expensive branded weigh over 1.85 kg, those over
         P15,000 tip the scales at 1.7 kg.   Most carbon frames are 1.5 kg.   The branded ones are at 1.5kg.
         Am Cla came out with 1.4+ kg alum wheelsets.  The 350 and 420.   Light bikes.   Even Ursu, the
         Italian company have wheelsets weighing in at 1.6 kg.  But they have beautiful wheels   Aero wheelsets
         are expensive but their wind cheating features are what you pay for.  at 30+ kph, your ability to cut
         through the air is what counts, not the weight.

         Orig 450 carbon wheelset weighs 1,500 grams. SRP is at P30 k.

       Novatec Jetfly (which I bought) weighs 1,435 gtrams making my Freccia really sub 8 kg alum bike.

       Some Italian carbon fiber wheelsets weigh 1,300 grams and cost over P130K.

   3.  Group sets:    Component Weight Comparison from Total Cycling

        There are three major manufacturers:  Shimano, Campagnolo and SRAM. Their average weight is
        2 kg;   Shimano group sets are heavier, Campy is lighter than Shimano, and SRAM is the lightest.
        SRAM was the first with SRAM red 22 to be sub 2 kg.  (1.7kg)

        Weight comparison

        1. Shimano                                                                     PHL price

           105                               2.498 grams                         P18,000

           Ultegra 6800 8000        2,294 grams                           30,000

           Durace   9000               1,998 grams                           64,000

Thursday, March 30, 2017

Difference between MTB and road bike riding

Wheels of Happiness

Rizal Philippines
March 30, 2017

I was in several conversations about the advantage and disadvantage of using Road Bike and MTB.

1.  MTBs are definitely heavier, have more friction on the road, and more wind resistance.  Definitely not for long distance riding.

2.  You tend to be lazier when on MTB;  you use lower gears, (very low low gears, even the granny)

3.  You cant finish a 100 km ride on MTB unless you are super strong.

4.  With a road bike you tend to be more patient, you less low gears, stand up and seek for your strength.

From my conversation with Alex Castillo who says he works at Tokyo Tokyo at Pasong Tamo, and Bert, who is from Marinduque, who recently went on night riding from Angono to Dalahican to go home to Marinduque for a high school reunion

Wednesday, December 23, 2015

Versatility of MTB gear ratios (inches)

Wheels of Happiness

December 23, 2015


It will be Christmas in one days time.  Merry Christmas

I looked again at the gear ratios of the MTB vs the compact (50 x 34) chain sets and found the versatility of modern MTB cogs and chain sets.  As I mentioned earlier, for the 44 largest chain set x  11 to 32  cogs, the  biggest gear inches and the smallest would cover the gear inches for a 50 x 34 chain set

Roadie      50 x 34 chain set

                              50                       34

11                          112                     76

12                          103                      70

13                            96                      65

14                            90                      61

15                            84                      57

17                             79                    54

19                             71                    48

21                             64                    43

23                             58                    39

25                             54                    36.7