new Crust Heartbreaker crankset: compact double, fun colors

[Brent Knepper]

from crust bikes, the bicycle company, end'a week email:

"The Heartbreaker Crankset is our take on a slim arm compact double. We drew from the classic Ritchey Logic cranksets to get the slim arm profile with a high offset. The high offset in the arms makes it so you can run a shorter bottom bracket than with most square taper cranks."

it's a 2x 42/26 crank, 170 arm length only

the big chainring's dedicated to the inside of a 110bcd spider and a lil guy on 74bcd inner bolts. square taper and they recommend starting at 110/113 spindle length. they say forged aluminum, curious if that's cold forged or melt forged? cute heart cutouts ◡̈  silver/black, or blue splatter ano or a rich brown, and minimal branding

$240 though ¯\_(ツ)_/¯

outer chainring setup reminds me of like a mix of the Dixna LA crank spider and the Bikingreen chainrings inner offset, with added hearts, but the arm shape is hella similar to ol ritchey logiq cranks. wonder what the chainline is like on a 110 spindle? prolly can't run these as a triple but there's at least one person coming to mind who might take that as a challenge

anyway: fun! interesting! wild to think two new slim, silver, 110bcd cranks are coming out in 2024 (these crustinis and the new riv silverers)

also these are probably the antithesis of all the low-Q experimentations going on in the rbw/ibob goog-group world :)

-Brent, hudval, still chaotically puttin JIS triples on 102mm campy BBs jff

[Johnny Alien]

Thats a stellar looking crankset!!

[Bill Lindsay]

those that fret will fret about the odd big ring.  It doesn't look interchangeable with anything else, and I don't particularly trust Crust to have replacement rings years down the road.  I trust Rene Herse to stock rings.  I trust White Industries to stock VBC rings.  

BL in EC

[Russell Duncan]

Sorry Crust, but my next choice for a 110 crankset will be the TA Carmina Compact. That Crust looks good at first but I agree with Bill Lindsey, the big ring looks to be too proprietary, and probably won’t be available as time goes by. 

Russell Duncan

Connecticut River Valley, MA

[ian m]

What makes a 110bcd chainring proprietary? Is it that the stock ring seems to have shoulders pushing the chainline inbound? Do you think it is not compatible with any other 100bcd ring?

[Bill Lindsay]

Is it that the stock ring seems to have shoulders pushing the chainline inbound?  Yes, that's the main thing that I see.  Also, the countersink of any 42 "outer" will be on the wrong side.  A 42 "middle" will likely be countersunk correctly, and may have the shift aids in the right place, if the chain line and spacing work out.  This is all assuming one doesn't care about color matching.  Compatible "blue splatter" rings from other vendors are not likely.  If the inner runs on separate spacers, rather than forged-in posts, then I'd be more confident in my ability to make my own spacers to get things correct.

Do you think it is not compatible with any other 100bcd ring?  110bcd.  It's a possible maybe, in my view.  If I ever have one in my hands, it's the first thing I'd check.  If I was buying one, I'd call Crust and ask them, and maybe ask for a spare set of rings at purchase

Bill

[David Ross]

Ah to be young again. These old knees are now on 165mm cranks with 36/22 chainrings. 

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[Brent Knepper]

I dunno, I bet a normie 110 outer ring could work even with the countersink. I wonder if the extra machining, which I first speculated as an offset (ala bikingreen chainrings) to push the ring more inbound, is like actually meant to make the ring have a more "flush" look with the crank spider

I'm curious if the 110 spider configuration is more akin to the Sugino OX601D/Dixna/IRD Lobo type of cranks, where the 110 chainring just sits behind the spider, but then crust wanted to pretty it up a bit with the hearts and some bump-out material for a more flush look?

all of this is just fun conjecture that a 2 minute call to crust might wrap up- but hey, that's the innernet baby!

maybe the funniest thing to do would be: get a blue splatter crust crank. then put an ol bronze suntour 110 chainring or a biopace ring. and maybe a purple ano'd avid microdrive adapter with a 20t inner ring. I won't do this but it's humorous to me to imagine that setup

-brent, having a nice time online ◡̈ 

[Johnny Alien]

That is how I saw it when I looked at it. Thats why the description points out that the outer ring sits in a middle ring position. The ring is not inset its built up for nice appearance. I assume any standard ring will work mounted in the middle position.

[raw_meet]

Man that brown looks good, opens up some cool build possibilities. I really don't like the crust branding but it's not the most offensive i've seen from them.

[Mike Godwin]

There are some older 110/74 Suguino cranks out there that have the same arm profile as the Crust and Logic without the drip tip on the NDS arm. See 'em on fleabay, but I cannot recall the model name. I have one in the parts hoard that came off my BMC Monstercross. Spider arms are not quite as svelte, but the arms aren't "swoled" out either. 

[Kesler Roberts]

Anyone out there running these cranks?  Trying to decide between these and Rivendell Silver 1 as I move to 170mm cranks.  

[Will Boericke]

Achieve the same results with any early 90s mtb crankset....

[Garth]

Even with the any extra import fees, the Spa Cycles house brand cranks offer all that the Crust does at a fraction of the cost. Plus they're normal cranks, take any 110/74 ring. Forged 2014 alloy.  Also, you can get just the arms and they sell rings for TA, Stronglight and the own Spa brand.

https://www.spacycles.co.uk/m8b0s109p0/Drivetrain/Chainsets

In particular the TD-2 cranks, available as doubles or triples.

That gets me think, why is it the UK has some wonderful online retailers for selling the kind of parts we here use ? Spa Cycles and SJS Cycles in particular.

[Kesler Roberts]

Nice - I was not familiar with Spa cycles - may end up going that route.