Origin8 MT-3100 100 mm Endcaps

thingiverse

I acquired an Origin8 MT-3100 hub, which is equipped with a front 15mm thru-axle hub. This hub is unique in that it features a "flush-axle" design, where the hub axle is nearly flush with the end faces of the hub. The effective OLD (Overlocknut Diameter) measures 78mm, making it impossible to use without the endcaps. Fortunately, I didn't have the endcaps initially, but Origin8 kindly sent me some replacements. However, my bike is currently equipped with a 12 x 100mm TA in the front, so I wanted to take the dimensions down and create my own 12mm endcaps. This posed some challenges, as the o-ring is quite buried in the hub. Unfortunately, I still haven't received the o-ring specs from Origin8, which makes it difficult for me to measure them accurately. Installing new o-rings would be less of an issue than removing the old ones, but honestly, I'm not sure how useful they would be. On the non-driveside, the o-ring contacts the hub axle, which protrudes beyond the bearing face. On the driveside, however, the o-ring is present but has no contact with the hub-axle, suggesting that Origin8 may have repurposed the endcaps from another hub. The only retention mechanism on this side is a minuscule lip on the driveside face and friction/contact with the bearing face and hub axle. I believe Origin8 is the only manufacturer of flush-axle hubs like this, and I'm struggling to understand why anyone would purchase such a product except by mistake. The driveside endcap will likely fall out every time you remove the skewer, and there are no forks in existence that can accommodate an OLD of 78mm. I will upload the full STLs and updated models once I receive the o-ring specs from Origin8. You can find more information about the product at http://www.origin8.bike/product-description/?prod_model_uid=14344. For reference, here are the corresponding endcaps: http://www.jbi.bike/site/product_details.php?part_number=370597. These endcaps come in 100 and 110mm Boost configurations.