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Anyone using a 46/30T crank on a road bike?

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Anyone using a 46/30T crank on a road bike?

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Old 12-24-16, 11:36 AM
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Originally Posted by IK_biker View Post
Took a triple, and a 46t "inner" chainring from TA Specialites installed the middle position, the 28t ring is in the granny position (74 mm BCD).
A decorative lightweight bashring in the large ring position takes care of the aesthetics aspect. The resulting chainline is precisely where I want it.

A single ring, Centered on chainline, with the bail out low gear, is what that result is, I Expect.
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Old 12-24-16, 04:00 PM
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Originally Posted by Mark Manner View Post
Here is the final build, with 46/30 up front, 11-40 rear, mid-cage rear ultegra di2 derailleur with a Wolftooth Roadlink. Shifting is very good, not really noticeably different from the 11/32 or 11/36 setup I have used before (without a Roadlink).

Attachment 546756
Mark,

Looks great

I am thinking of following the same path for my new bike, thus re-assuring that the shifting meets your expectations

Sounds like you are well placed to have some enjoyable riding in 2017

Keep safe

Peter
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Old 12-25-16, 06:01 PM
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Originally Posted by wgscott View Post
I'm 53, live in a very hilly area (Santa Cruz mountains), and am in the late stages of recovering from a nasty ankle break. Currently I have an Ultegra 50/34T 11-speed crank and a 11-32T cassette (Di2, which was bundled with my hydraulic discs as the time). On some hills I could use a lower gear, and realized that replacing a 50T ring with a 46T ring would only entail losing the 50/11 combination, which I very seldom use. (50/12 = 46/11 0.01).

Has anyone here switched over to a 46/30T crank? I have a conventional BB shell, so I can't use BB30, and my Di2 system limits me to a double chain ring and a difference of 16T. My absolute ideal would be a drop-in replacement for my hollotech Shimano Ultegra 6800 crank.

On most climbs, the 34T front with the 32T rear is fine. We have one road around here (called Alba Road) with some 15% to 18% grades, and even with this low combo, it nearly put me in the coronary care unit. Having entered my declining years about a quarter of a century ago, this will only get worse I suppose.

The main problem seems to be limited options, which in turn is probably driven by consumer interest (and the idea that you are a wuss if you have an expanded range of gearing). People get old, get injured, carry loads, go off-road, climb very steep hills, etc, so the prejudice is in my opinion not entirely justified.

Here are some examples I have been pondering, just to get a conversation going.

I've come across a few options, and experimented with one on an old bike. I'd love to see other options, and hear about other's experiences, especially with Di2.

Defiant Wide Compact Road Crank Set (50/34T square taper, about $200)

Defiant Wide Compact Road Crank Set: IRD



I purchased this for my 1987 Bianchi renewal project. My original crank is a Gippeme 52/42, which combined with a corn-cob freewheel, was fine when I was 25. Now I am 53 and am riding the steepest hills of my life, I thought this was worth a try. The crankset is silver-colored and looks like a classic crankset that complements Campy parts if you don't look very closely. It is nominally rated for 10sp. (I have a 7 speed, and I have also heard it works ok on an 11-speed.) The crank arms are very pretty. The chainwheels are very basic but functional. Seems to ride ok.

White Industries VBC Crank (many gearing options, square taper, $250 crank + $150 for two chainrings = $400 ( + $125+ bb ) = expensive

ROAD CRANKS: White Industries



These look like a thing of beauty in the website photospread. I have not seen them in person. These also seem to be by far the most versatile option, and with both black and sliver-colored options, could complement either a classic or modern look. The negatives I have heard mentioned are clunky shifting compared to Ultegra, the requirement for a square-taper bb (although a BB30 version is said to be in production -- no use to me but perhaps to others), and cost (although it is said you get what you pay for in terms of manufacturing quality with this. Made in CA.) I've been very close to pulling the trigger on this, but having broken a square taper bb axle 25 years ago (and when I was 20lbs lighter), I worry about the bb. I would love to have more feedback on this option.

Middleburn 'Super-Compact' Crank 46/30T 24mm axle 417.00.

ROAD CHAINSETS EXTERNAL BB | Middleburn Shop

[image no longer available]

This looks like it could be a drop-in replacement for my Ultegra 6800 crank. The price (> $600) and shockingly ugly appearance keep me from pulling the trigger, but otherwise this is ideal from my point of view. The website has a bunch of other options. I would love to hear about other's experiences.

FSA Omega MegaExo (48/32T and 46/30T and more standard options, BB30 and 'MegaExo' versions).

FSA Omega MegaExo - Full Speed Ahead



(This is an older 50/34T. FSA's Website won't allow display of image)

I just found this (with help) on the FSA website, but I haven't seen it offered for sale anywhere. I don't know anything about their cranks or bb, but there seems to be a lot of negativity on the internet. The standard-size version seems quite inexpensive. I don't understand what 'MegaExo' means, but I am hoping it means it could fit my conventional bb shell.


Praxis Works Alba Crankset 48/32T, BB30 only (?), $175

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



This is named after the road that is inspiring me to find a solution. If I could fit it on the bike, I would buy this, as it is local, named Alba, and the company is well-regarded. Alas, it seems they only make bb30 stuff, unless I really missed something.


More Info
I found this link with some similar listings last night:
Low Gear Range: Road Shifters & Gears For Easier Hill Climbing - CyclingAbout CyclingAbout
I use a velo orange grandcrue and. My sprockets are 40 and 26. With a 11-32 cassette I can do pretty much anything I need to. Frankly I may switch to 12-34 because I rarely use the 11. I know it sounds li!e a really low geared drive train but as long as top gear is in the 90 inch range I am happy. Plus 26-32 or 26-34 will get you up lots of hills.
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Old 12-28-16, 06:52 PM
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I have been running a Stronglight 110 mm BCD 46/34 crankset on my bike for the last two years, along with 9-speed Shimano Ultegra STI shifters and a customized 13-32 cassette (13-15-17-19-21-23-25-28-32). The front derailleur is a Shimano CX-70, and rear derailleur is a Shimano Tiagra with the "GS" mid-length cage to handle the largest 32t cog. I find the 46t chainring is ideal for most of my riding, in the middle of the cassette with a perfect chainline when on the flats. In other words, I basically have a "1x9 plus granny" setup, since I only use the small chainring when climbing.

I decided I wanted one more lower climbing gear, which meant changing to a 46/30 setup. Since I like to tinker and experiment, I have started with the dirt-cheap Spa Cycles "TD-2 Super Compact" crankset. This is a 110 mm / 74 mm triple crank converted to a double, with a bash guard in the outer ring position. The cranks are a low-end Sugino copy with a low finish level, but the Spa brand chainrings are quite impressive: precise CNC machining of the teeth and ramps combined with a utilitarian bead-blasted anodized finish. The shift up from the 30t to the 46t is impressively good - crisp and flawless in half a rotation of the cranks, actually much better than the shifting was on the former 46/34 setup.

I may upgrade later to a better-finished 110/74mm triple crank (Stronglight or Sugino), but I'm going to stick with the Spa Cycles chainrings. Impressive quality and very modestly priced.
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Old 12-28-16, 07:31 PM
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ajp- when you used the 46-34, did you always have the CX70 FD or did you try a standard double first?
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Old 12-28-16, 07:51 PM
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I haven't posted to my thread in awhile.

Although I liked the gearing with the IRD crank, I eventually replaced it (along with other components) with a Campy Athena-11 speed triple on my old Bianchi. I don't know whether it was the IRD crank itself, or the square taper bottom bracket I had, but it would flex enough when I would stand up on the pedals to rub on the FD. The Athena-11 crank and new BB are rock-solid.

I haven't done anything yet with my other bike, which has the Di2 restriction. (I found I could make it up Alba Rd with what I have, albeit struggling.) I had my eye on the newer White Industries 30mm crank, but now I am afraid there might not be enough room for it and my Di2 wire in the BB shell. I've decided to hold off until I find the perfect solution.

Anyone need an almost new 46/30 IRD crank?
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Old 12-29-16, 10:51 AM
  #82  
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I am waiting for the OMEGA MEGAEXO 46-30 to be released so I can use it on my commuter bike (currently running a Gossamer Compact 50x34T with Ultegra 11 speed)
The front Derailleur is a clamp on, so I THINK it will work.

But for my road bike I'd LOVE to switch to SRAM e-tap and run the considerably lighter SL-K MODULAR ADVENTURE BB386EVO. But it isn't out yet either. And I don't know that I can make it work on my Roubaix. But I'm hoping.

If anyone hears that either of these are available please post!

Don't bike makes and component makers realize their gearing is stupid high for the people (read 50s forum) with enough money to buy their stuff?
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Old 12-29-16, 12:31 PM
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shelbyfv:
Yes, on this bike (Black Mountain Cycles monstercross frame), I started with the CX70 front derailleur, so I didn't try it with a standard road FD.

However, I've also set up my old Trek 850 mountain bike commuter with a 46/34 crankset. This is a true Frankenbike setup:
-- Shimano Sora crankset (9-speed) on Hollowtech II bottom bracket
-- Customized 9-speed cassette (a 12-25 changed to a 13-29)
-- KMC 10-speed chain
-- The original 6-speed Shimano Deore derailleurs
-- Shimano Deore 9-speed trigger shifters from eBay
The FD is designed for a triple crankset (profiled inner cage), and at first it would jam the chain against the inside of the 46t big ring and refuse to up-shift. But I raised the FD until the inner cage profiling lined up with the top of the 34t in the way it used to with a 28t inner chainring. It took a little fine-tuning, but now the cage profile helps squirt the chain up to the 46t, and it up-shifts quite nicely. A different scenario, perhaps, but at least it tells you that there are lots of ways to adjust non-standard combinations to make them work fairly well.

Also, the dramatically better up-shifting with my new 46/30 setup compared to the original 46/34 setup shows how much difference the ramp and pin design on the bigger ring can make.
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Old 12-29-16, 12:51 PM
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Thanks. I'm about to replace the 50 on a 50-34 with a 46. I think I'll just leave the FD where it is to start with, rather than lowering it for the 46.
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Old 12-30-16, 05:49 PM
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Originally Posted by shelbyfv View Post
Thanks. I'm about to replace the 50 on a 50-34 with a 46. I think I'll just leave the FD where it is to start with, rather than lowering it for the 46.
Why? I think it would shift better with the derailleur at the specified 1mm above the large ring. I think that going from a 50 to a 46 will open that clearance by quite a bit (about 8mm by my calculations).
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Old 12-30-16, 06:07 PM
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Yes it should if the FD will clear the 34 after it is moved down. It's set now for the 50, I'll leave it there until I can get an idea of how it will act with the 34 if moved. I don't want to mess up the paint by moving the FD unless I have to. I can get a CX70 if I need to but my current 7800 is so purty.
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Old 12-31-16, 06:54 AM
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I think you'll be a lot happier with it moved down. I went from a 53 to a 50, and I didn't move the FD. When I finally decided I was unhappy with the shifting, I moved it and shifting got a lot better. But I could tell on the stand that the shifting wasn't good, so trying it isn't going to hurt anything. Just recognize that shifting that's a little slow on the work stand is going to be more of a problem on the road.
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Old 12-31-16, 09:39 AM
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Yeah, it sure won't get better out on the road! I'll move it down if it clears the 34.
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Old 12-31-16, 03:12 PM
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Originally Posted by shelbyfv View Post
Yeah, it sure won't get better out on the road! I'll move it down if it clears the 34.
I bet it will clear the 34. Most front derailleurs seem to work fine with 53/39, a 14 tooth drop, and I have some triples that work aok with 50/40/30, a 10 gap, so since your new 46/34 is a 12 I would guess it will be ok. Let us know, as I am curious.
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Old 01-04-17, 09:56 AM
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I just noticed a newer 11=speed compatible SUGINO OX901D Compact Plus Crankset is now available, and I think it could be a drop-in replacement for my 11-speed Ultegra crank. Both black and silver-colored are available, in two different styles. If so, I think I finally found my answer:

https://alexscycle.com/products/sugi...-plus-crankset

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Old 01-04-17, 07:58 PM
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This is a really smart crank and Alex tends to have good prices on sugino stuff. I'm going to do something similar with a vintage bike--a 1978 Trek TX 900--that I want to build up for a really hilly ride I do in the fall (the Dairyland Dare, usu. north of 6,000 ft. of climbing over a metric century). I'm going to use a vintage stronglight 99 crank with 47/32 rings and a 13/30 in the rear for that ride.
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Old 01-06-17, 09:27 PM
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Let me know if you want my IRD 46/30T (square taper).
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Old 01-06-17, 09:30 PM
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Originally Posted by wgscott View Post
Let me know if you want my IRD 46/30T (square taper).
The mods don't like any selling/buying outside the proper subforums and that requires an upgraded membership (around $10 a year).

How the heck did you set up your account so that no one can PM you? I'm impressed, .
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Old 01-06-17, 09:35 PM
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Sorry. Anyway, I was offering to give it to you.

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Old 01-06-17, 09:59 PM
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Originally Posted by wgscott View Post
Sorry. Anyway, I was offering to give it to you.

wgscott AT me.com

e mail sent!
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Old 01-09-17, 08:07 PM
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[QUOTE=wgscott;19290299]I just noticed a newer 11=speed compatible SUGINO OX901D Compact Plus Crankset is now available, and I think it could be a drop-in replacement for my 11-speed Ultegra crank. Both black and silver-colored are available, in two different styles. If so, I think I finally found my answer:


Hi, I thought I had posted about this some time ago here. I have two of them now, and they permit Di2 internal routing through the bottom bracket (fits in a standard ultegra road threaded bottom bracket). Works great.
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Old 01-09-17, 08:15 PM
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@Mark Manner

Sorry, somehow I missed all of your very informative posts after Dec 2nd. But I am grateful for your input!

BTW, your trailing [/QUOTE] tags often seem to get amputated.

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Old 01-09-17, 08:46 PM
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Originally Posted by Mark Manner View Post
Originally Posted by wgscott View Post
I just noticed a newer 11=speed compatible SUGINO OX901D Compact Plus Crankset is now available, and I think it could be a drop-in replacement for my 11-speed Ultegra crank. Both black and silver-colored are available, in two different styles. If so, I think I finally found my answer
Hi, I thought I had posted about this some time ago here. I have two of them now, and they permit Di2 internal routing through the bottom bracket (fits in a standard ultegra road threaded bottom bracket). Works great.
Mark
The one thing that is giving me pause is that the Q-factor is very slightly smaller than the Ultegra. I sometimes hit my heal on the right chainstay. Do you notice any difference?
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Old 01-09-17, 11:55 PM
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Originally Posted by wgscott View Post
The one thing that is giving me pause is that the Q-factor is very slightly smaller than the Ultegra. I sometimes hit my heal on the right chainstay. Do you notice any difference?
Hi, I haven't noticed any issue with the Q-factor difference with the Sugino crankset. I may not be sensitive to it, as a result of riding 3 or 4 different road bikes with slightly different Q-factors. I will think about it when I ride it next time, if the weather ever gets better for an outside ride (riding on trainer bike now using Zwift for the first time. To my surprise it seems to actually make the time go by faster).
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Old 01-11-17, 07:10 AM
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I'm still waiting for a crank from FSA that will swap right into my BB386EVO BB. It's been on their web page for months, but I was just informed by FSA that they're "hoping" to have it generally available by the "end of February." :-(
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