so guys help me making decision, for a newbie a little bit sprinter in making which would be best to go with? standard T or compact one?
Standard=faster sprinting but harder uphills
Compact=slower sprint but easier uphills
@Torvi I think you just answered your own question about triples there, I think your missing the point, what
@Big_Dave and I are saying is that with a 10sp triple you have a normal double i.e. 39/52 (or various combinations I have a 38/50) and also an inner ring to help with the hills, and don't view solely as a last resort, I went up a steady climb this evening on the 26th inner ring but using the middle of the cassette opposed to the 38th middle and the 21/24/27 area as I have a better choice of gear ratios.
To get a low gear on a compact you need a 34x30 to give 29.8" this on a Tiagra 12-30 cassette (12/13/14/15/17/19/21/24/27/30) your 50x12, the same as I have is 109.6" so a range of 29.8-109.6" which will get you up most things, you may be able to fit 34/52 chainrings to get 114" but that is a bloody big jump if it works, I have never come across anyone doing as yet.
The next thing is the gaps on the cassette after the 15th start to get wider and sometimes when your are battling that head wind you will never find the right gear, now take the triple I have a 12-13-14-15-16-17-19-21-24-27 on a 26/38/50 chainset a gear range of 25.3-109.6", I personally hate that gap from 17 to 19, but I almost always ride on the middle ring a range from 37-83.3" I have to change to the 50th outer ring when the grade gets to say -1% and steeper or about 23-24mph, my range on the middle and outer is 37-109.6" your compact double going of the previous numbers i.e. 34/50 and a 12-30 cassette you would be on the 34x24 combination 37.3" leaving you two gears with quite big gaps, now take my low inner ring 26x19=36" plus three more gears.
More importantly I can with a 12-13-14-15-16-17-18-19-21-23 get the same gear range as a compact 34/50 with a 12-30 cassette 29.7-109.6" in fact its still very slightly lower, but look how close the gears are, plus because the cassette cogs are smaller the weight might actually be less.
Two charts for you
Your typical compact
My current set up
and what I am think of.
I very rarely use the 38x27 combination through choice to see how I get on with the 38x24 being my lowest gear on the 38 ring, if I think its viable for my fitness levels and where I ride I might well go with 12-23 cassette.
Next thing spinning, I spin usually between 90-100rpm and to keep this in that range the choice of close gears but the wide range a triple gives out weighs the compact double.