I just installed a bottom bracket on a brand new frame. Putting the cranks on and I noticed the spindle doesn’t go all the way through the non-drive crank. Is that normal? It’s a Shimano GRX crankset and Origin8 68mm BSA bottom bracket. It appears I can still thread on the end cap, maybe this is just how it’s supposed to be? I followed the instructions that came with the bottom bracket to install one 0.5mm spacer in each side of the bottom bracket for Shimano road sizing. It’s a Lynskey GR200 gravel bike frame. 68mm BSA English bottom bracket is what it said on the website.
by sk8klown88
4 Comments
Dude i had the same thing with the same BB. I ended up ditching the spacers, and my cranks fit perfect. I would seek a second opinion, though!
There’s a small hole in the spindle, you can see it in the first photo. There’s a corresponding plastic tab between the bolts on the NDS crank arm that will drop into that hole if the arm is far enough onto the spindle.
I would not ride this spacing. I’m guessing the pin on the safety clip no longer drops into the hole on the spindle, which is what’s supposed to indicate sufficient engagement.
Try removing the spacers and seeing what happens, though I’m not sure I’d be comfortable running 1mm more engagement either.
On another note, why didn’t you just get a Shimano bottom bracket? You’d at least know for sure you’d avoid compatibility headaches like this.
no, road bike bb doesn’t need any spacer by default.
although i m not sure what is the origin8 bb, but if it’s bsa 68mm for road crank, it doesn’t need the spacer.