I have a question about the roller-gear for a Universal-I. I recently purchased a pair of new cores/rollers for a Uni-I. However, when they arrived I noticed the new cores are different from the existing cores/rollers, and thus the old roller-gear cannot fit to the new cores. The old core is hollow and has a inner small rod, while the new core is completely solid. Here is a comparative photo (with a larger version on Flickr).
– Roller (A) is the old back roller with the gear removed.
– Roller (B) is the old front roller with the bearing block removed.
– Roller (C) is a spare that shows a hollow core. (Same as A and B).
– Roller (D) is the new core/roller (solid metal core).
Here is the old/original roller-gear:
Here is a photo of the complete old core and gear:
My question: I’m now looking for a roller-gear that would fit the new solid core (D). Should I be looking for a Uni-III roller-gear that has a larger hole compared to the original Uni-I roller-gear?
Any advice/guidance would be appreciated. Thanks in advance.