Could these rings have originally been produced as some of the first alloy rings for the old Stronglight cottered steel three arm cranks? One presumes then the inner ring attached to the outer ring.
In the catalog, the inner ring appears to attach to theaded holes in the outer at a larger diameter than the crank arms, but perhaps originally the three holes not used to attach the crank arms were used to mount the inner ring. Anyone have a clue why one would want to do this, when it seems easier to use longer bolts and just attach both rings to the crank arm?
I have a couple of these six hole Stronglight rings. I believe they came in a large lot I bought from Ted Ernst. The lot was a good deal, but I haven't figured out what to do with these 6 hole rings. Perhaps Ted can shed some light on when these rings were originally introduced, what crank arms they were intended for, and how the inner rings attached.
Regards,
Jerry Moos Houston, TX
John Thompson <JohnThompson@new.rr.com> wrote:
Jerome & Elizabeth Moos wrote:
> I'm a bit puzzled by 6-bolt Stronglight chainrings I see from time to
> time, like these on eBay. I'm familar with Stronglight 3-arm cranks
> and 5-arm cranks of various BCDs, but what crank arms did these
> 6-bolt rings fit?
>
>
> http://ebay.com/
Look like the one on page 4 of my Stronglight catalog:
http://www.os2.dhs.org/
It looks to be a six bolt ring on a three-arm crank!
--
John (john@os2.dhs.org)
Appleton WI USA