Masi Coltello get a 51 or a 53
ok so i was at my lbs getting ready to order my track frame, a Masi Coltello. i had the frame size in mind that i wanted but they were suggesting another so i wanted a second opinion. im going off my road bike for sizing and it has the geo as follows
HT angle 73
ST angle 74.5
effective TT horizontal 53
ST c-t-c 52
HT length 130 and i ride with the stem slammed/no spacers
i ride with a zero offest seatpost with the seat centered in the clamp and a 120 stem. this fits me perfect!! im 5'8" and have short legs and a longer torso
the masi has the geo as follows
HT angle 74
ST angle 75.5
effective TT horizontal 52.5
ST c-t-c 51
HT length 110
HT angle 74
ST angle 75
effective TT horizontal 53.5
ST c-t-c 53
HT length 120
from what i have been reading on track geo im leaning toward the 51 being that it will be more in line with sizing off a road bike and using that for a track bike as well as on the road for sprint training for crit's. but i dont know so thats why im asking.
I'm not an expert on track by any means, but I like that my track bike is a bit smaller lengthwise than my road bike. I put a long stem and track bars (long reach) on the bike but will be reverting to something more normal for this year.
Track bars are so much longer/deeper that they make up for a good amount of TT length.
fyi I ride a 52 Cdale, 53.5 TT, 11? cm headtube, 13 cm flat/73 stem, no spacers. I'm 5'7", short legs, long torso.
My track bike has a 52 TT, I'll be putting a 14 flat stem (not track) and probably 41cm crit bars (same as road bike). If I can find a shorter stem I'll use it, maybe a 12. Right now, with a 14 track stem and 39 track bars, the seat-bar reach is 5 cm longer on the track bike. I hope to reduce it so it'll be about the same between bikes.
yes, go with the 51. it's easier to build larger rather than building the 53 smaller. also you'll have less flex and it'll be slightly lighter.