I have a KH hub from around maybe 2005 (+/- 2 years) with the splined, non-ISIS interface on my 24". I only ride my 24" occasionally and I’m looking for cranks that aren’t 170mm. I use my 24" as a loaner from time to time and the cranks throw everyone off. I seem to be the only person who would ever consider 170mms on a 24" a good idea.
I’m assuming someone has some old cranks laying around that don’t get much use, now that ISIS (the interface) took over. I’m in no rush at all. Don’t be afraid to reply if this post is years old, I’ll probably still have this wheelset regardless.
I do have 170’s. I do enjoy them and they are hard to come by these days, so I’m not certain if I want to part with them, but I’m also not a fan of them sitting around barely being used. Let me get back to you, once I find shorter cranks.
This 8-spline interface is the one used on the very first KH hubs and on the Qu-ax splined hubs (before ISIS).
Usually, they are listed as Qu-ax as they kept it way longer in the catalog than KH do.
Unfortunately, like the KH/Onza 48-spline (don’t remember the exact count), they are harder to find in shops (as most had limited stock) or second hand.
But the odds are higher as it was sold longer on production unicycles.
I believe its the same as the summits, but I’ll measure to double check. How does one measure the spline? I’ll post an image with a ruler in case I’m off.
I measure splines with a dial caliper. Major diameter (across opposing splines) and minor diameter (smallest reading when caliper jaws are in line with splines).
On my summit the major is .742" which is a hair under 19mm. Minor is .632" which is a bit over 16mm.
I lack a caliper, but My measurements appear very similar. A conservative error for my measurements would be ± 0.5mm. The 17mm OD definitely would not fit.
Unfortunately there isn’t a large selection of cranks out there that fit these hubs.
While looking for a different set for my summit I kept coming across the same problem you have. The most common cranks I found available were 165-175mm haro “78” cranks but these are too long. A not so common option is the haro sub C cranks. These are 140mm and have read on here they fit great and are plenty stout.
