Recently I had run into an inquire from the togoparts forum, and I guess it would be nice to share my view on it:
Hey guys i am new to road riding, so just want to ask, i did my body measurement at bike labz a few weeks ago, then it was measured that i am suitable for frame size of top tube 53cm.
But currently i am interested in a frame but that frame’s smaller and the top tube is only 51.5cm.
Will it matters a lot if i use a smaller frame as compared to the measurements i was given? Has anyone tried using a smaller bike frame? Should i still buy the bike frame?
Yeah a lot of qns so thx for yoru advice! (:
So, the question in simple is should he purchase a smaller frame and use a longer stem to make up the overall length OR getting a larger frame with standard stem length.
My 2 cents was to look at the situation in 2 dimensions if getting the smaller frame was his decision. The first one is in related to the saddle-to-bar drop, it is obvious the height of the saddle will always be the same no matter which wise of the frame that is being chosen. However, the smaller frame size will lead to a shorter head tube. That shorter head tube will lead to a greater saddle-to-bar drop.
If the riders’ flexibility is not enough, the rider will have a hard time on the bike. So, considering the flexibility is important. Knowing where the rider stands on the effective padding range/angle between the legs and body is critical.
Secondly, its the clearance between the tip of the cycling shoes and the front wheel. For the really some size frame, the tip of the shoes that is mounted on the clip-less pedal can run into the front wheel when a sharp turn is being made. It could cause some problem here.