Originally Posted by
SaikyoSenpai
For a Mini Velo or BMX conversion as mentioned above, what's the largest chainring anyone has been able to place on their bike. I'm thinking of a singlespeed version of something similar to OP but still want the gear ratio to be similar to a 700c bike. Aiming for 80 gear-inches or so.
Also, for something like a bmx conversion or similar, has anyone had trouble sourcing longer stems and seat posts? Anytips on where to get these?
Also, Also, Does having a different crankset style on BMX bikes create problems with compatability? i.e. Not a square taper like most road bikes. Is this the limiting factor for chainring size potentially?
A 56T chainring will get you in the low 80s GI range on 16", ISO305 wheels. Higher than that is, of course, possible, but imo an fool's errand as these things ain't meant for speed and the rotational losses of these small wheels becomes increasingly apparent.
56T