24" vs. 26" Donor

[Biscuit]

I ordered my conversion kit and am trying to find a frame that is low enough.
The frames I have measured so far are about 28" to 29" from the floor to the crossbar.
From what I understand the measurement from the crossbar to the floor should be about 25".
All these have been on 26" bikes. Will a 24" bike be better, or should I continue to look for the elusive frame that measures 25" that is on a 26" bike.
I guess I have not found a 17" frame with 26" wheels.

Thanks in advance for you assistance.

Rod

 

[pablo6276]

I could be wrong, but most of the photos of conversion bikes I've seen seem to have 24" wheels.

 

[defjack]

All my bikes have been 26in except for the 20in. folder.Look for small frames 15-16in. 17 is more of a med. Jack