some of you may have noticed my thread on a climber's bike... I managed to find a good deal on a Dogma F8 and am seriously considering getting the frameset...
They have both the 53 cm and 51.5cm...
I measure 175cm, have an inseam of 80 cm (converts surprisingly well to my Retul recommended saddle height of 70.6cm).
I currently ride a Giant Propel, size M. I have had a bike fit done on it and feel very comfortable on it, HOWEVER, my saddle is maxed out as far as it will go towards the stem on the rails. To get the saddle down as necessary, I had 1 cm cut off the bottom, otherwise the seatpost would hit the "wheel arc". I run a 100 mm stem, two spacers underneath, one on top atm. I have 38 cm bars.
Based on the fitment guides of the Dogma, I don't know which size would be best for me... height wise, it seems like the 53, seat height wise the 51.5...
Comparing the geo of the Propel and the Dogma, the 53 is closer - same reach, a little less stack.
From Retul below, stack and reach correspond to the Propel, on which it was done...
Any ideas as to what I would be better off with? I started riding a two years ago and have medium flexibility, I would like the frame to grow with me...
I also have a Specialized Crux, size 54, built up to be a winter training bike/gravel bike... I find it a tad big, honestly - but that is also due to the fact that I run 42 cm bars for leverage...
(on a side note - I briefly had a Giant TCX, size M, and felt waaaaaay to cramped on that in terms of my legs - my knee on the pedal stroke was aligned with the stem bolts. I would like to avoid this feeling...)
Giant dimensions are here: https://www.giant-bicycles.com/us/propel-advanced-1
Dogma F8 here: http://www.pinarello.com/en/bike-2018/road/dogma-f8
Im 175 cm, 82-83 cm inseam, and medium flexibility as well.
And this is my Retul measurements:
I was also thinking should i get 51.5 or 53 (at the end i bought Colnago C60 50S), and i was test ride 51.5 with 120mm stem. I was using 20 or 25mm spacers under the stem, and it feel comfortable as size.
In same time i tried Dogma 60.1 53 and also owning Pinarello Fp3 in 53. I had appoitment to try Dogma F8 in 53, but i decided that not needed, so did not try.
53 is more relaxed, more sluggish geometry, 51.5 is more reactive, quicker, and more agressive..
Probably if i was buying Dogma F8 ill get it 51.5 (but worried that i have only 5 mm more spacers space if its needed, and i expect in the future my flexibility to be weaker (im 42)). From the other side, i have better flexibility now, then last season
. 51.5 fell like better size for climbing, more crisp handling on downhill... Yes, probably ill bought a 51.5.
I also payed for analysis of sizes 51.5 vs 53, so if u like i can send u that as well (in pvt).
From comparation with Proper, 53 is closer match to ur M size. So maybe it's safer bet. if u get 51.5 the reach wont be a problem, but only stack. So also compare how many spacers u use on the giant u ride now, and compare how may spacers will be on Dogma F8. If's more then 30mm, then it's small, go size up..
If i can help with something else, feel free to ask