Ultra Chainring Swap?

[DDBB]

Interesting.. I''ll email Anna to find out for sure but it sounds doable

 

[il Munduato]

Photo from gbk

 

[DDBB]

It does look like the same spider.Would be great to see the other side of one of those. Nothing back from Anna Lee yet

 

[il Munduato]

Making some assumptions here....
BCD for both is 5 bolt /130 spacing.
From the other photo the offset looks to be in the spider which also makes sense from a manufacturing perspective.

 

[DDBB]

Should be good but would be nice to hear from Ana before ordering. Eyeballing it should have it missing a chain stay with very little room to spare. TBH this is a want and not a need. It's basically going to give me one more gear which I need because I have to pedal too fast in 9th gear over 25mph. I rarely go over 25mph even though the ultra motor is more than happy to oblige

 

[il Munduato]

Silly rabbit.... that's why I suggested the inexpensive Ali' ring so that you can test fit it and sample your gearing need. I thought I wanted a 46t, but after a hundred miles I knew 44t would be a better fit for me.
I hope you don't go thru all this and it ends up it's too big. 40t to 48t is a pretty big jump and all the gearing calculators don't illustrate well (IMO) leg strength and one's cadence comfort zone.

 

[DDBB]

I'm going from 44 to 48... Ali ring was junk unfortunately but hey, it only cost $1.86

 

[il Munduato]

I'm going from 44 to 48...

Ahh... That's easier to guesstimate.

Ali ring was junk unfortunately but hey, it only cost $1.86

Maybe so... But a 50mi test ride would confirm fit and guesstimate