Chalo
100 TW
-dg said:Chalo said:Don't use more than one cross on a hub motor. Your spokes will break at the threaded end if you do.
What about two cross on a small geared hub motor (113mm spoke hole diameter) in a 700c (sun cr-18) rim? Is that a practical combination? Kinda late to be asking since I already built it and it looks ok but this is outside my experience so I don't really know.
That's "maybe, maybe not", depending on the specifics of the nipple diameter, rim hole diameter, flange lateral spacing, etc.
You can tell whether you are likely to have problems by looking at the fully assembled and tensioned wheel. if the nipples sit in the rim at a different angle than the spokes emerging from them, then stress will concentrate at that bend and some spokes will eventually break there. If the nipps are aligned with the spokes, then you have no problem.
The last wheel I had with that problem was a 7-speed gearhub of about 90mm pattern diameter that I laced cross-four on a 700c rim. It was the companion to my X5305 hub motor which was laced cross-one on the same rim, which did not have the same issue with occasional spoke breakage.