PLANET3 compatibility guide (hubs, break rotors, frame clearance)

Hub compatibility for now includes the following:

• Specialized stock hubs (2018 – 2019, also known as Formula, HiLo, Stout XC Pro, XLC Evo)
• Specialized stock hubs (2020, Formula E-bike hub)
• Roval SL hubs (DT Swiss re-brand featured on top models; both 6-bolt and Center Lock variants)
• DT Swiss hubs (including new Hybrid; both 6-bolt and Center Lock variants, EXP has to be replaced with the regular end cap)

• Hope Pro4 and Pro5 148 boost (only 6-bolt hubs are compatible and they require a modified end cap provided by PLANET3 – 10 EUR extra)
• Syntace HighTorque MX (MicroAdjust has to be replaced with the regular end cap)
• SRAM 746 (same as Specialized hubs, featured on Rocky Mountain e-bikes)
• NOVATEC D162SB (featured on most Focus e-bikes, requires a modified end cap provided by PLANET3 – 10 EUR extra)
• Giant eTracker Boost (requires a modified end cap provided by PLANET3 – 10 EUR extra)

• Giant e-TRX, e-TR1, eTRX DBL, eTR1 DBL
• Bontrager Line Elite 30/40 (hub seems to be the same on Pro/Comp)

• Shimano MT400, MT501, SLX and XT Center Lock hubs (require a modified end cap provided by PLANET3 – 10 EUR extra)
• Shimano MT410-B garbage version (requires a modified end cap provided by PLANET3 – 10 EUR extra)

If you have upgraded your stock wheelset to ANYTHING else (Industry9, Newmen, Chris King, Superstar Components, Nukeproof etc etc.) please contact us first! (and only if this seems to be a popular hub option that many people might find themselves on and you’re willing to do some measuring with Vernier calipers)

Brake rotor compatibility notes – We’ve tried to make PLANET3 compatible with as many 6-bolt rotors as possible. This includes any flat 1-piece rotor on the market (Shimano RT66, SRAM Centerline, many others) and Shimano RT76 & RT86 2-piece rotors. However, here are some exceptions and combinations which we know CAN’T FIT (due to room constraints on the frame):

• older version of Hope Saw rotor (2,9 mm thick center) on almost any Specialized bike
• newer version of Hope Floating rotor (2,6 mm thick center) on almost any Specialized bike
• most AliExpress rotors such as SNAIL / mi.Xim or other re-brands of the same (4 mm thick center) – it’s like they forgot certain steps during machining of these and through luck alone can you fit them on most bikes. They are also horribly tolerated dimension wise and vary in thickness of the braking surface (causing terrible pulsations under braking as the thicker part goes through the calipers)! You should not be riding these anyway.
• Center Lock rotors note: all center lock rotors are compatible with PLANET3 since it mounts on the lock ring itself and not the rotor. Each PLANET3 center lock version will come equipped with a Shimano SM-RT30/70 steel lock ring (included in the price).

General compatibility rules. These are the questions to ask yourself if you’d like to know if PLANET3 can be made compatible with your e-bike:

• Does my bike feature a wheel speed sensor at the dropout with the magnet being mounted on the 6-bolt or Center Lock rotor?
  This is the ideal scenario; only remaining constraints are space on the frame and the braking side hub end cap. These we can check with the simple test. Find yourself a 6 mm allen key or 7 mm drill bit (even better because installed PLANET3 device is about 6.8 mm thick) and place it inbetween the brake rotor and the speed sensor (flat against the brake rotor) just like so:

• Does my bike feature a wheel speed sensor on the chainstay and a SPOKE magnet?
  Actually, PLANET3 can help here, too. The constraints are: space on the frame AND length of sensor cable. For example, this is how GIANT Trance E+ is configured but there’s plenty of sensor cable around the motor for it to reach the rear hub where it is then mounted on the PLANET3’s ring gear.

• How does my 6-bolt hub profile look on the braking side? Does it have any flanges or protrusions inside the 6-bolt hole pattern? How does the braking side end cap look? Is it tapered, staggered or straight?
  Best you can do is send a picture of the hub for us to have a look as there are certain geometric conditions that have to be satisfied in order for the PLANET3’s sun gear to be compatible with your hub.

So, measure if the sensor cable can reach the hub and if there is room on the frame for a saucer of ~7 mm thickness and ~60 mm diameter. In this case, almost any bike can have a PLANET3 on it!