Cranks.....

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1/11/2018 5:36 AM
Edited Date/Time: 1/11/2018 5:37 AM

So, what are everyone's thoughts on the differences in 3-piece chromoly cranks.... particularly, aftermarket? As there is a large range of prices with the lower end being a pinch bolt type for around $50-$60 up to around $300 for "top-of-the-line" cranks. Back in the day, you couldn't touch Redline Flight Cranks. They were the undisputed champs. But, by today's standards, they are closer in design to lower level cranks.

Annnnnnd... DISCUSS!

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1/11/2018 6:21 AM

I think parts really depending on your level of riding. If you are doing big stair sets etc, then I would invest in the best cranks possible. But if don't do anything too gnarly, then I reckon a budget set of cranks will do the job no problem.
Back in the day for me, the only cranks you got were either Profile or Primo powerbite, but now every company out there make cranks and they all have completely different set ups.

Have you bent or wrecked cranks before?

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If I could go a tenth as high as Larry Edgar goes, then I would still be blasting super high.

1/11/2018 6:35 AM
Edited Date/Time: 1/11/2018 6:37 AM

Aitkenisgod wrote:

I think parts really depending on your level of riding. If you are doing big stair sets etc, then I would invest in the best ...more

No, Ive never destroyed a set of "3-piece" chromoly cranks. It's just that in looking around you see a lot of completes (especially older & now lower end) with 8-spline axle & pinch bolts around & now your "higher end (ish)" completes come with 48-spline non-pinch cranks. Just wondering if the quality is that much better between a Rant 48-spline crank setup v. Animal Akimbo Cranks v. FIT v. Profile, etc...; And where to those stock 48-spline heat-treated cranks on completes rate in that mix?

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1/11/2018 6:47 AM

the only cranks that matter are profile. all other 48 spline cranks are just copies made in the same chinese factory with different paint/logo.

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It’s all bmx

1/11/2018 6:53 AM

adamnmexican wrote:

the only cranks that matter are profile. all other 48 spline cranks are just copies made in the same chinese factory with ...more

But then, check these:

http://www.easternbikes.com/reynolds-853-cranks

Made from Reynolds 853. I just wonder how much better these could be compared to Profile. Or how much better any crank is over another overall. Or are you just paying for the warranty?

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1/11/2018 7:09 AM
Edited Date/Time: 1/11/2018 7:27 AM

I guess I have just been unlucky. I bent my 3 peice crankset after a few hard crashes. I ran with it like that for a week or two but then it annoyed me so much I replaced them. Sold the bent cranks for like 15 bucks and looked for the best cranks I could buy and chose the thunderbolts. Very happy.

When I started getting to the point where I was breaking and bending low end parts frequently, I told myself Im not going cheap on the stuff thats keeping me off the ground.

I do have those mongoose bikes, but I bought those to be cheap on purpose.

I also have bought a salt 3 peice crankset for 70 bucks and had no real problems. Sold them to my friend for cheap and he still beats the shit out of them. 70 bucks was the cheapest I have found for new heat treated cranks. Non-heat treated cranks are not worth my time anymore, even though I am still a beginner.

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1/11/2018 7:22 AM

Bulletpup wrote:

I guess I have just been unlucky. I bent my 3 peice crankset after a few hard crashes. I ran with it like that for a week or ...more

What did you bend... the crank arm or the axle?

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1/11/2018 7:24 AM

Bulletpup wrote:

I guess I have just been unlucky. I bent my 3 peice crankset after a few hard crashes. I ran with it like that for a week or ...more

Mishinn_Control wrote:

What did you bend... the crank arm or the axle?

Crank arm. It was twisted a bit and was touching my chainstay. Had to put more spacers to keep riding it.

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1/11/2018 7:29 AM

Bulletpup wrote:

I guess I have just been unlucky. I bent my 3 peice crankset after a few hard crashes. I ran with it like that for a week or ...more

Mishinn_Control wrote:

What did you bend... the crank arm or the axle?

Bulletpup wrote:

Crank arm. It was twisted a bit and was touching my chainstay. Had to put more spacers to keep riding it.

What make were they?

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1/11/2018 7:40 AM

Mishinn_Control wrote:

What did you bend... the crank arm or the axle?

Bulletpup wrote:

Crank arm. It was twisted a bit and was touching my chainstay. Had to put more spacers to keep riding it.

Mishinn_Control wrote:

What make were they?

I think they were failure. A bike company that is now out of business.

They were pretty new looking when I first had them. No scratches, not even the wear marks on the side from pedaling.

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1/11/2018 7:48 AM

Of course Animals or Profiles are gonna be much better than your run of the mill stock 48s. Its about engineering and material quality.

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1/11/2018 8:07 AM

Super-Pawl wrote:

Of course Animals or Profiles are gonna be much better than your run of the mill stock 48s. Its about engineering and material ...more

I would agree... but let's assume that the chromoly used in both the Profiles/Animals and that of a complete is relatively similar. For instance, the cranks on my Shovelhead are "3-Piece, Tubular Heat-Treated Chromoly, with a 48-Splined Spindle". Do you think their chromoly (that of companies that aren't aftermarket) is that much more inferior (although it could be that it isn't true 4130....)?. What sort of engineering could they be employing that is far superior to that other the other designs (assuming they are all 48-spline, etc...)?

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1/11/2018 8:18 AM

Super-Pawl wrote:

Of course Animals or Profiles are gonna be much better than your run of the mill stock 48s. Its about engineering and material ...more

Mishinn_Control wrote:

I would agree... but let's assume that the chromoly used in both the Profiles/Animals and that of a complete is relatively ...more

"Chromoly" is pretty vague, and is why so many "chromoly" parts are available now, without specifically stating they're 4130. Also, how the joints are made matters. Does the material wrap around the bosses? Are the mitres cut within similar tolerances? Is the weld as good quality? The answer is something we'll never know for definite. But the only cranks I've bent were chromoly 3 piece from a complete

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1/11/2018 8:23 AM

Good stuff, everyone! Great info! I think those differences are definitely worth mentioning (Not everyone knows that "Chromoly" isn't necessarily the same thing as "4130 Chromoly").

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1/11/2018 8:29 AM
Edited Date/Time: 1/11/2018 8:30 AM

The difference comes from design and material.

Pinch bolt cranks are prone to failing at the spindle boss when challenged with significant abuse.

Non-heat treated cranks are going to flex more and likely won't last like heat treated cranks will.

Bigger spindles are generally stronger and lighter (though they call for weaker bearings.)

Titanium spindles for weight weenies with money to blow.

Square body cranks instead of tubular for locking into crank arm grinds

Some cranks even have gussets on them..

I could go on all day. Basically, as far as chromo cranks go, you get what you pay for. My advice is to read up on the details before buying cranks.
If you ride hard core street, you might want something like the Subrosa Big Bitchins, that are Post-weld Heat Treated and feature "beefed up" crank arms. Or some Powerbites/Mavericks with no welds.
If you ride super smooth and aim to have a light bike, maybe some Profiles with a Ti spindle will fit you.


This thread makes me want to write a Crank buying guide but I still gotta finish the Fork guide haha..



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Refs : SnM An1mal, GThompson121, Chuck8273, blizzbikes, bmxsteve99, kevin.brock.338, zinum, Brian_Griffin, billyhandyjunior, riverM, tomdon
Instagram : @timhankinsbmx


1/11/2018 8:38 AM
Edited Date/Time: 1/11/2018 8:52 AM

HardBMX_Tim wrote:

The difference comes from design and material.

Pinch bolt cranks are prone to failing at the spindle boss when challenged ...more

Ha! I JUST posted to your buyers guide (complete) about the 4130 thoughts since I didn't see it mentioned there & would be helpful for those looking at bikes & seeing a Mongoose L100 & thinking it's the same quality as a 4130 Chromoly framed complete from another manufacturer.

Also, great info! Some stuff I didn't even know in there!

Keep it coming guys.... you too Bulletpup (didn't want to exclude you with the term "guys".... yeah, I saw those bike porn pics!)

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1/11/2018 8:44 AM

HardBMX_Tim wrote:

The difference comes from design and material.

Pinch bolt cranks are prone to failing at the spindle boss when challenged ...more

Mishinn_Control wrote:

Ha! I JUST posted to your buyers guide (complete) about the 4130 thoughts since I didn't see it mentioned there & would be ...more

Lol

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1/11/2018 8:52 AM

My next set is going to be the Odyssey Calibur cranks.

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"Hey anybody ever make that mistake like right when you wake up in the morning and you believe in yourself?" -Kyle Kinane

"BIKES!" -Tom Segura

1/11/2018 8:56 AM

dave lawrence wrote:

My next set is going to be the Odyssey Calibur cranks.

My friend has em. They're so nice! Look good & feel better. I might grab a pair if I have to return these United cranks.

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Refs : SnM An1mal, GThompson121, Chuck8273, blizzbikes, bmxsteve99, kevin.brock.338, zinum, Brian_Griffin, billyhandyjunior, riverM, tomdon
Instagram : @timhankinsbmx


1/11/2018 8:58 AM

What size cranks are you guys all using, why & how tall are you?

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1/11/2018 9:01 AM

Mishinn_Control wrote:

What size cranks are you guys all using, why & how tall are you?

170mm cuz it feels good grin 6'1" and sz13 shoes wink

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Refs : SnM An1mal, GThompson121, Chuck8273, blizzbikes, bmxsteve99, kevin.brock.338, zinum, Brian_Griffin, billyhandyjunior, riverM, tomdon
Instagram : @timhankinsbmx


1/11/2018 9:04 AM
Edited Date/Time: 1/11/2018 9:07 AM

Mishinn_Control wrote:

What size cranks are you guys all using, why & how tall are you?

Im using 170mm on both my fancy bikes.

I went from 175's and the only reason I switched was they were cheaper than all the other deals. Ended up liking them although it makes it a bit harder to pedal. Makes it feel like you have one more tooth on your sprocket.

I do like them though, slightly more clearance, lighter, stiffer, you dont feel as wide-footed.

Seems to make hops a bit easier.

I think im 5'11 or 5'10 maybe in between.

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1/11/2018 9:30 AM

dave lawrence wrote:

My next set is going to be the Odyssey Calibur cranks.

Just grabbed a pair in 170mm (from 175mm), put them in easy with no Crank install tool just used lots of Grease(which comes included with the cranks if you don't have any, also comes with a BB which is nice) and they feel really good! I don't know if I can really compare cause I upgraded from Mission Transit, 8-Splines & Pinch Bolt. No Matter how tight you pinch that bolt or what grease I put on the splines they always ended up squeaking after a week, was constantly rotating them (I'll update my Bike Check when I put my new frame, wheel and Sprocket together next week)

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1/11/2018 9:46 AM

Yeah... I'm really digging those odyssey caliber cranks! Any thoughts on the larger spindle/ smaller bearing? Any concerns?

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1/11/2018 9:53 AM

Mishinn_Control wrote:

Yeah... I'm really digging those odyssey caliber cranks! Any thoughts on the larger spindle/ smaller bearing? Any concerns?

I've rode 24mms and the bearings lasted a good year of daily intermediate riding before needing replaced. They were also significantly stiffer than my 19mm Profiles I switched from, and I didn't even think those flexed until I got the 24s haha.

At the end of the day, they're cheap bearings, so it's no biggie to replace them 1 or 2 times a year if necessary.

I've been running 22s for the past couple years. Good sized spindle, good sized bearings. Can't go wrong. (Well unless you buy United bossless cranks..)

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Refs : SnM An1mal, GThompson121, Chuck8273, blizzbikes, bmxsteve99, kevin.brock.338, zinum, Brian_Griffin, billyhandyjunior, riverM, tomdon
Instagram : @timhankinsbmx


1/11/2018 10:03 AM

Mishinn_Control wrote:

Yeah... I'm really digging those odyssey caliber cranks! Any thoughts on the larger spindle/ smaller bearing? Any concerns?

22mm bearings seem to be fine. I even install mine with a hammer and get them out with a socket wrench head and 3lb sledge. No wobbles.

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1/11/2018 10:06 AM

Mishinn_Control wrote:

Yeah... I'm really digging those odyssey caliber cranks! Any thoughts on the larger spindle/ smaller bearing? Any concerns?

HardBMX_Tim wrote:

I've rode 24mms and the bearings lasted a good year of daily intermediate riding before needing replaced. They were also ...more

(Well unless you buy United bossless cranks..)

LOL.... sorry man. That sucks.
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1/11/2018 10:38 AM

I ride 175mm profiles, with the gdh axle. I'm 6' and have bad hips and knees. I think I like the flex feel of profiles and don't do anything too nuts. If I were to change size I'd go for 180mm, which I'm tempted to go for on my steadfast build

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1/11/2018 10:52 AM

grumpySteve wrote:

I ride 175mm profiles, with the gdh axle. I'm 6' and have bad hips and knees. I think I like the flex feel of profiles and ...more

Why the 180's... for the added flex?

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1/11/2018 10:53 AM

I had profile race cranks with a ti spindle for 13 years then I sold them and the guy who has them now still hasn’t broke them , you can’t go wrong with profiles , had 1664 cranks wich I though looked like profile knock offs they where solid and a heck of a good price , then I’ve had fit 24mm indents those where tanks they felt indestructible , now trying some snafu mayweather cranks looking forward to those they look very similar to profiles , I’ve heard demolition rig cranks are great those I will probably try next after these snafu cranks

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