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Replacing just crank arms

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Replacing just crank arms

Old 03-12-14, 01:39 PM
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Replacing just crank arms?

I recently got a Fuji 2.3 Absolute hybrid road bike after 13 years with my Iron Horse MTB. I really like everything about the Fuji, but there's just one minor thing that bothers me. I wish the crank arms were black instead of silver. Is there a way I can replace just the arms on both sides and keep the chain ring and not have to use a crank puller?

If possible, what do I need to look for to make sure my replacement arms would fit OK? I don't need super expensive arms as I mostly ride around my neighborhood with the occasional long trek around town. I just wan them black

Here's a picture of the bike (please click on pic to enlarge):

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Old 03-12-14, 01:52 PM
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I wish the crank arms were black instead of silver. Is there a way I can replace just the arms on both sides and keep the chain ring and not have to use a crank puller?
Emphatic No ,

get out a spray can. or live with it.[/COLOR]
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Old 03-12-14, 01:52 PM
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Originally Posted by Hank3 View Post
I recently got a Fuji 2.3 Absolute hybrid road bike after 13 years with my Iron Horse MTB. I really like everything about the Fuji, but there's just one minor thing that bothers me. I wish the crank arms were black instead of silver. Is there a way I can replace just the arms on both sides and keep the chain ring and not have to use a crank puller?

If possible, what do I need to look for to make sure my replacement arms would fit OK? I don't need super expensive arms as I mostly ride around my neighborhood with the occasional long trek around town. I just wan them black

Here's a picture of the bike (please click on pic to enlarge):
You will have to pull the crank arms off. Changing rings isn't hard if the rings are bolted on but I'm not sure (and can't tell) if that is the case with your bike. Often times, it's cheaper to buy the whole crankset as well. Assuming that the crank is a square taper, you can get an Altus in the same ring combination for as little as $24. Just Google "48/28/28 crankset black" and you'll get lots of hits.
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Old 03-12-14, 01:54 PM
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those may even be riveted together , its a pretty low cost component.
chosen to keep the whole-bike cost down ..
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Old 03-12-14, 01:58 PM
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Thanks for the quick responses and info. Will I also need to purchase a new BB?

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Old 03-12-14, 02:05 PM
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Originally Posted by Hank3 View Post
Thanks for the quick responses and info. How do I know if it's a 170mm or 175mm. Doesn't seem to stae that on Fuji's website. Will I also need to purchase a new BB?
Look at the back of the crankset. It's usually stamped on the arm somewhere. You can measure the arm as well from the center of the bottom bracket spindle to the center of the hole for the pedals. 175mm = 6.89" while 170mm = 6.80"

You may or may not need a new bottom bracket. Get the new arms, install them and see if they work.
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Old 03-12-14, 02:12 PM
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Originally Posted by cyccommute View Post
Look at the back of the crankset. It's usually stamped on the arm somewhere. You can measure the arm as well from the center of the bottom bracket spindle to the center of the hole for the pedals. 175mm = 6.89" while 170mm = 6.80"

You may or may not need a new bottom bracket. Get the new arms, install them and see if they work.
Thanks! I think I'll go with this one on Amazon in Black:

Amazon.com: Shimano M361 Hybrid Crankset (Black): Sports & Outdoors

Are chain guards usually easy to remove?

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Old 03-12-14, 02:22 PM
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Originally Posted by Hank3 View Post
Thanks! I think I'll go with this one on Amazon in Black:

Amazon.com: Shimano M361 Hybrid Crankset (Black): Sports & Outdoors

Are chain guards usually easy to remove?
Isn't the crankset in the link similar with black gears and silver crank arms?
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Old 03-12-14, 02:39 PM
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Originally Posted by RPK79 View Post
Isn't the crankset in the link similar with black gears and silver crank arms?
I don't think the picture is accurate. There's an option to get black, but it only comes in 175mm so I'll need to check to see what size my current ones are.
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Old 03-12-14, 02:43 PM
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Originally Posted by Hank3 View Post
Thanks! I think I'll go with this one on Amazon in Black:

Amazon.com: Shimano M361 Hybrid Crankset (Black): Sports & Outdoors

Are chain guards usually easy to remove?
I would suspect they are removable. Without seeing them, I don't know how but the guard is plastic and the crank is aluminum so they are either bolted on or snap into place.
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Old 03-12-14, 02:51 PM
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or swaged , the arm of aluminum becomes pressed to itself be a rivet.. in the stamped piece that is the chainring.

a fully automated production , ..


Even Brompton did that on all their cranksets until this past year .



I may look at the entry price bikes next time in in the LBS.. and confirm
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Old 03-12-14, 02:52 PM
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Originally Posted by Hank3 View Post
I don't think the picture is accurate. There's an option to get black, but it only comes in 175mm so I'll need to check to see what size my current ones are.
I recently bought that crank to replace stock crank on my Trek Verve. I purposely went with the longer crank arm for more torque, but I have long legs (34" in-seam). I am very happy with the result.
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Old 03-12-14, 03:23 PM
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Originally Posted by Hank3 View Post
Thanks for the quick responses and info. Will I also need to purchase a new BB?
Can't tell ahead of time unless you have a way to find out what length spindle is required by the new arms and compare it to the length of your current spindle.
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Old 03-12-14, 04:35 PM
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Originally Posted by Hank3 View Post
Thanks! I think I'll go with this one on Amazon in Black:

Amazon.com: Shimano M361 Hybrid Crankset (Black): Sports & Outdoors

Are chain guards usually easy to remove?
You could do like I did and get an Origin8 crank that come in black, no chain guard and is much lighter that most stock cranks.
I replaced the bottom bracket on my hybrid so I decided to go ahead get the Origin8 crank to replace the extremely heavy stock cranks that came on the bike while I was at it.
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Old 03-12-14, 07:11 PM
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I went ahead and purchased the black version of the Shimano one I linked to on Amazon. I purchased a Park Tools Crank Puller and some grease as well. Seems pretty straightforward from what I've seen on YouTube as far as removing a crankset goes. I'll be sure to remove the pedals first

Hope everything goes smoothly.
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Old 03-12-14, 09:21 PM
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I strongly recommend studying first several text versions of any repair procedure, especially on parktool.com/blog and sheldonbrown.com, before referring to videos. Yes, videos make it look easy - because there is a necessity of not adding in all the boring (but important) if's and's and but's. Videos in most cases are helpful to show the dynamics of the process, not so much for covering all the details.
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Old 03-12-14, 10:17 PM
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Originally Posted by Hank3 View Post
Are chain guards usually easy to remove?
They are usually just screwed into the big ring with 4 screws but many chaingaurd equipped cranksets are missing the chain drop pin.
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Old 03-13-14, 11:25 AM
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Moot point since the online buy from the job killing warehouse was already made ..

Are chain guards usually easy to remove?
depends on the pieces bought .
you are at the basic level http://www.sjscycles.co.uk/shimano-t...24593/?geoc=us


As I said , at lower price points the whole thing is one piece ,
so if you want a removable chainguard,

you may have to start from scratch at removing the whole crank and BB.

and moving up the price plateaus of parts.
this chainguard disc costs more than that whole crankset.

this http://www.sjscycles.co.uk/thorn-hig...11082/?geoc=us

goes on this sort of crank http://www.sjscycles.co.uk/fsa-alpha...26340/?geoc=us.

will it pop right on your existing BB , ? the Ouija board is not answering that one .

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Old 03-13-14, 09:01 PM
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Original crank looks a lot like a FSA job.

I replaced two Shimano cranksets with this sort yesterday; the FSA cranks required a ~100mm BB, and the Shimano ones used 118mm, IIRC.
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Old 03-17-14, 02:44 PM
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Just a quick update: I was able to change out the OEM crankset with the Black 175mm Shimano Acera M361. I purchased a used set, but it looked brand new to me. All of the protective wrapping was still on it.

Anyways, the Park Tool Crank Puller for square taper cranks worked liked a charm. I was able to remove the chain guard as well. It was secured with 4 small Phillips screws on the backside. Haven't been able to ride the bike yet. Curious to see if I'll be able to feel a noticeable difference with the 175mm crank arms. The OEM ones were 170mm.
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