46-30 crankset options

[PaMtbRider]

After the Farmer's Daughter ride this weekend my lovely wife has requested some lower gears. What are my option for a 46-30 crankset? The main caveat being a threaded bottom bracket with non oversized spindle. Her bike is Di2 and there isn't clearance for wires and a 30mm spindle. Would prefer to avoid square taper if possible. The only thing I've come up with so far is the just released Shimano FC-RX600 crank.

[bicycletricycle]

sugino OX901

[Billybob62]

https://www.somafabshop.com/shop/product/sugino-crank-arm-set-ox901-w-bb-2794?category=973

[NHAero]

There's a thread on here titled, What are the big 3 waiting for to go sub-compact? which has a great deal on this topic. And Mark McM wrote more detail about using a SRAM Force cranks with the removable spider to swap in a MTB spider to run lower gears in a thread titled - Subcompact gearing.... that I started a while back. I've done that on my Litespeed, running 42-28. Haven't looked for rings to do 46-30.

[djg21]

Praxis makes nice sub-compact cranksets that are reasonably priced.

https://praxiscycles.com/product/alba-m30/

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[bicycletricycle]

Praxis makes nice sub-compact cranksets that are reasonably priced.

https://praxiscycles.com/product/alba-m30/

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as long as 32t is small enough for you.

[jtbadge]

Praxis makes nice sub-compact cranksets that are reasonably priced.

https://praxiscycles.com/product/alba-m30/

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Great cranks (I have Zayante subcompact on my cross bike), but doesn't satisfy the need for a non-oversized spindle.

[PacNW2Ford]

It’s not cheap, but the Rotor Aldhu comes in a 46/30 with a 24mm spindle. I’m running the 30mm version with a CX70 FD and 11-speed, works great.

[PaMtbRider]

I like the Sugino, but does anybody ever have them in stock? The Rotor also is kinda cool and I wasn't aware of it.

[AngryScientist]

Dan - Absolute Black makes some 46/30 chainrings that bolt directly to standard shimano 4-arm cranks. i have a set and confirm they shift really well.

https://absoluteblack.cc/oval-road-chainrings-30-46-and-32-48-for-110-4bcd/

[mhespenheide]

Why the reluctance for square taper? There's 94mm BCD square taper cranks out there that you can use as a double, just leaving off the inner ring.

Otherwise, SRAM has a variety of cranks with removable spiders. Buy the crank you want, then swap in a "mountain" spider.

[SlowPokePete]

Dan - Absolute Black makes some 46/30 chainrings that bolt directly to standard shimano 4-arm cranks. i have a set and confirm they shift really well.

https://absoluteblack.cc/oval-road-chainrings-30-46-and-32-48-for-110-4bcd/

This is what I put on my Ultegra crankset...was perfect for the Farmer's Daughter
giving me a nice 30-34 for those rough hills.

SPP

[PaMtbRider]

Why the reluctance for square taper?

Good question that I don't have an answer for. Maybe a white industries crank would be a nice option.

[sparky33]

The Easton SL90 crank arms can be coupled with either single ring or double, direct mount. They offer 47/32, 46/30 and other road combos. bb options for almost all threaded or non threaded standards.

Super nice cranks.

[Lovetoclimb]

Is the new Shimano GRX available?

[oldpotatoe]

Good question that I don't have an answer for. Maybe a white industries crank would be a nice option.

Or find a nice older square taper, triple, shimano or Campag...use 'short'/track CR bolts, use the middle position and small and you can go down into the mid-high 20s for the small ring...

[Jaybee]

The Easton SL90 crank arms can be coupled with either single ring or double, direct mount. They offer 47/32, 46/30 and other road combos. bb options for almost all threaded or non threaded standards.

Super nice cranks.

Are the Easton cranks 24mm spindle? If yes, they also have a lower cost alloy version out now.

[Clancy]

are the easton cranks 24mm spindle? If yes, they also have a lower cost alloy version out now.

30

[fried bake]

FSA make several. Or search eBay for seller bikinGreen who makes 5 bolt 110 bcd chainrings for $69. I have a NIB gossamer 46/30 I’m selling if interested PM me. $75


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[CNY rider]

sugino OX901

Like fine jewelry.
I keep looking for an excuse to buy them.

[sparky33]

Are the Easton cranks 24mm spindle? If yes, they also have a lower cost alloy version out now.
Yep. Easton makes the EC90 and EA90....Carbon and alloy. Same basic concept. direct mount Cinch interface, 30 spindle and a Easton bb for almost all the common standards.
White Industries makes a compatible T47, and there are others too - I have the WI T47 and an Easton 68mm threaded bb for another bike.


sugino OX901
These are also very nice cranks. Sugino knows a thing or two about cranks.

[NeauDL]

Question for Angry Scientist and SlowPokePete re Absolute Black 46-30 chainrings: Are you using these chainrings with 5 mm spacing between the front derailleur cage and the top of the 46 at maximum diameter as suggested in the installation video on the Absolute Black website? Is the shifting optimal with this much space? Or were you able to lower the front derailleur enough to reach the usual recommended 1 mm spacing between the front derailleur and 46-tooth chainring? My 2015 Domane front derailleur mounting bracket allows 1 mm spacing for a minimum 50-tooth round chainring or 48-tooth Absolute Black oval. I noticed that Absolute Black only recommends 5 mm spacing for the 46, and not for any other size, presumably because many older bikes simply don't allow putting the front derailleur in a lower position.

[AngryScientist]

Question for Angry Scientist and SlowPokePete re Absolute Black 46-30 chainrings: Are you using these chainrings with 5 mm spacing between the front derailleur cage and the top of the 46 at maximum diameter as suggested in the installation video on the Absolute Black website? Is the shifting optimal with this much space? Or were you able to lower the front derailleur enough to reach the usual recommended 1 mm spacing between the front derailleur and 46-tooth chainring? My 2015 Domane front derailleur mounting bracket allows 1 mm spacing for a minimum 50-tooth round chainring or 48-tooth Absolute Black oval. I noticed that Absolute Black only recommends 5 mm spacing for the 46, and not for any other size, presumably because many older bikes simply don't allow putting the front derailleur in a lower position.

I have my FD adjusted to just clear the big chainring at the top of the oval, maybe 1mm spacing. obviously, since it's oval, there is more spacing at the "skinny" side of the chainring, but with the above mentioned FD position, shifting is great.

[dogrange]

Absolute Black makes a 46-30 chainring set that will install in a Shimano road crank. They are oval, which put me off at first, but after using them they are great. Shift just fine BTW


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[Mark McM]

Or find a nice older square taper, triple, shimano or Campag...use 'short'/track CR bolts, use the middle position and small and you can go down into the mid-high 20s for the small ring...

This can work, but in order to get a good chainline, you may have to use a wider spindle, resulting in a wider Q factor. That may not be ideal for smaller riders.

Why the reluctance for square taper? There's 94mm BCD square taper cranks out there that you can use as a double, just leaving off the inner ring.

This can also work, but unfortunately most of these cranks were MTB cranks, and therefore made in longer sizes (175mm or more). These cranks also often have wider Q factors than road cranks.

Otherwise, SRAM has a variety of cranks with removable spiders. Buy the crank you want, then swap in a "mountain" spider.

This is the option I eventually ended up with, due to the issues mentioned above (and for compatibility with press-fit bearing frames).

[Clean39T]

After the Farmer's Daughter ride this weekend my lovely wife has requested some lower gears. What are my option for a 46-30 crankset? The main caveat being a threaded bottom bracket with non oversized spindle. Her bike is Di2 and there isn't clearance for wires and a 30mm spindle. Would prefer to avoid square taper if possible. The only thing I've come up with so far is the just released Shimano FC-RX600 crank.Wolf Tooth roadlink and an 11/36 cassette? Works great for me w a Centaur RD so far.

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[Kirk007]

Wolftooth just announced AXS 12 chainrings for Easton crank and with more to come. I have the easton crank and like alot. If per chance you need a 177.5 I have a nice Speciaties TA crank - currently with 47-32 but that's easy to change that I need to move on, along with bottom bracket....

[2metalhips]

Gravel cyclist has answers....

https://www.youtube.com/watch?v=6aSoS_K7adQ

[eddief]

won't that do the job?

https://praxiscycles.com/product/zayante/

I have a barely used alloy Zyante 48/32, 172.5 available, just the crankset.

Let me know if you have interest.