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@Greasy_Paws
I am planning to get a El Mariachi 2007 frame to build my first SS 29er.
I am bit confused about which size to choose as I am in between the Small and the Medium.
My measurements are 5'8" tall and 32" inseam.
The ETT (Effective Top Tube) from the 26" MTB frames I have are just either 1cm up or down from El Mariachi ETT.
Nothing too extreme that cannot be corrected with a different stem / saddle positioning
In relation the Stand Over Height, the Small size gives a gap of 10cm and the Medium of less than 4cm.
I am pretty confident I will be able to fit both sizes but not sure yet which one to choose.
My main concern about getting a Small is the 5cm of difference in Seat Tube Length in relation to Medium. This may result in the seatpost having to stick out too much from seattube.
In relation to the Medium size, I am not sure whether the frame is going to feel 'too big' with just 4cm between inseam and SOH. It might also feel a bit 'unweildy' for technical tracks for my height.
The seller (I am buying it online) suggested a Small and told me that the Medium is only recommended for people taller than 5'9".
Other bike-friends who already have 29ers have pointed out that a Medium would fit me better.
So I am in a kind of frame sizing dilemma as I really do have no experience with a 29er frame geometry.
Any tips or help to choose the frame size of 29er are really appreciated -not asking to size it for me.
Regards
Geometry chart for this model here