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Messages - learzi

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Cyclocross Frames, Wheels & Components / Re: LightCarbon Gravel bike build
October 07, 2026, 06:11:53 AM
Quote from: Nilist on May 25, 2026, 05:23:23 AM
I'm doing almost exactly the same build currently  ;)
Groupset: Wheeltop GeX (12-speed Wireless) - Same (but I use Ultegra calipers)
Crankset: Senicx GR3 - Went for Thinkrider PP5 carbon with powermeter
Bottom Bracket: ZTTO T47-24i - same

Hi! I'm actually very interested in your Senicx GR3 + ThinkRider PP5 setup.

I'm currently running a Shimano GRX FC-RX610-2 (172.5 mm, 46/30), which has a 47 mm chainline and Q-factor of 151 mm. I'm considering switching to a dual-sided PP5 power meter, but I don't want to significantly change the GRX geometry.

Could you clarify a few things about your setup?


  • Which exact Senicx GR3 model/version and crank length are you using? Is it the GR3-B1 2x version?

  • Are you using the Senicx crank arms with the PP5 spider, or are you using the ThinkRider carbon crank arms that come with the PP5?

  • What bottom bracket and spindle/axle length are you using? I would prefer to stay with a 24 mm Shimano-style spindle/BB if possible.

  • Did you need any spacers/washers? If so, where exactly did you put them (drive side, non-drive side, between the crank and spider/chainrings, etc.)?

  • Do you know the actual chainline of your finished GR3 + PP5 setup? Even an approximate measurement would be very useful. I'm specifically trying to get close to 47 mm.

  • What is the resulting Q-factor? If possible, could you also tell me the distance from each crank arm to the frame? I'm trying to retain approximately the GRX 151 mm Q-factor rather than ending up with a narrower road-bike stance.

  • What chainrings are you using with the PP5? I'm looking for either 46/30 or 46/32, preferably a 110 BCD 4-bolt set.

  • Did the front derailleur require any adjustment, and does shifting between 46T and 30/32T work normally?

Basically, I'm trying to figure out whether I can build a PP5 + compatible 170 mm crank + 46/30 or 46/32 setup with approximately the same 47 mm chainline and 151 mm Q-factor as GRX, rather than simply accepting the PP5's narrower geometry.

Any measurements or photos of the crank installed, especially around the bottom bracket and PP5 interface, would be hugely helpful. Thanks!
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