Originally Posted by w3bby
Sorry txt you are incorrect, not all ferrules are round and need to be soldered.
As stated by idoc try the Warehouse Hobbies site. The XP2C
propshaft has a square drive connection. Aeromarine do a solderless ferrule as well
with square drive
which then connects to a standard prop shaft.
If you are regularly breaking flex cables then you need to find the underlying cause and rectify it.
The standard is round and requires it to soldered. If some manufacture chooses to make it different then the price goes up. Round cost me nothing but time. That equals FREE!: including the flex cablesD