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3pc & 2.5pc BMX cranks on Dartmoor 26player?

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3pc & 2.5pc BMX cranks on Dartmoor 26player?

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flag Nikolaialipon
Posted: Nov 25, 2017 at 12:15 Quote
Am still in the process of building my 2017 Dartmoor 26player. Does anyone know if the spindle length of any bmx 3pc or 2.5pc cranks will fit the frame? I’m in doubt whether the spindle length is enough or not. I tried to purchase a Deity Vendetta 3.0 cranks with a 6 inch spindle, unfortunately my order didn’t push through. I hope someone can clarify this to me. Thanks!8)
flag cmc4130
Posted: Nov 27, 2017 at 7:09 Quote
Nikolaialipon wrote:
Am still in the process of building my 2017 Dartmoor 26player. Does anyone know if the spindle length of any bmx 3pc or 2.5pc cranks will fit the frame? I’m in doubt whether the spindle length is enough or not. I tried to purchase a Deity Vendetta 3.0 cranks with a 6 inch spindle, unfortunately my order didn’t push through. I hope someone can clarify this to me. Thanks!8)

You can choose a 6 inch spindle (or "axle") with Profile BMX cranks: https://www.profileracing.com/product/rhd-3-piece-chromoly-race-crankset-2/

I don't know about the Dartmoor, but this is my Black Market Mob. It needs a 6 inch spindle to get crank arm clearance.
photo

Bmx Crank on Dirt Jump MTB
https://www.pinkbike.com/forum/listcomments/?threadid=195676&pagenum=1#commentid6378453
flag Nikolaialipon
Posted: Nov 28, 2017 at 8:08 Quote
cmc4130 wrote:
Nikolaialipon wrote:
Am still in the process of building my 2017 Dartmoor 26player. Does anyone know if the spindle length of any bmx 3pc or 2.5pc cranks will fit the frame? I’m in doubt whether the spindle length is enough or not. I tried to purchase a Deity Vendetta 3.0 cranks with a 6 inch spindle, unfortunately my order didn’t push through. I hope someone can clarify this to me. Thanks!8)

You can choose a 6 inch spindle (or "axle") with Profile BMX cranks: https://www.profileracing.com/product/rhd-3-piece-chromoly-race-crankset-2/

I don't know about the Dartmoor, but this is my Black Market Mob. It needs a 6 inch spindle to get crank arm clearance.
photo

Bmx Crank on Dirt Jump MTB
https://www.pinkbike.com/forum/listcomments/?threadid=195676&pagenum=1#commentid6378453



What cranks are you using? I can purchase profile race cranks with 6 inch spindle locally. Is it rigid or stiff enough to be used on street/dj? I’m quite hesitant to purchase one because I don’t know if it will survive the abusive use of the ride. As far as I know the cranks are used for racing only, and not on jumping. Correct me if I’m wrong.
flag cmc4130
Posted: Nov 28, 2017 at 10:03 Quote
Nikolaialipon wrote:
cmc4130 wrote:
Nikolaialipon wrote:
Am still in the process of building my 2017 Dartmoor 26player. Does anyone know if the spindle length of any bmx 3pc or 2.5pc cranks will fit the frame? I’m in doubt whether the spindle length is enough or not. I tried to purchase a Deity Vendetta 3.0 cranks with a 6 inch spindle, unfortunately my order didn’t push through. I hope someone can clarify this to me. Thanks!8)

You can choose a 6 inch spindle (or "axle") with Profile BMX cranks: https://www.profileracing.com/product/rhd-3-piece-chromoly-race-crankset-2/

I don't know about the Dartmoor, but this is my Black Market Mob. It needs a 6 inch spindle to get crank arm clearance.
photo

Bmx Crank on Dirt Jump MTB
https://www.pinkbike.com/forum/listcomments/?threadid=195676&pagenum=1#commentid6378453



What cranks are you using? I can purchase profile race cranks with 6 inch spindle locally. Is it rigid or stiff enough to be used on street/dj? I’m quite hesitant to purchase one because I don’t know if it will survive the abusive use of the ride. As far as I know the cranks are used for racing only, and not on jumping. Correct me if I’m wrong.

They are Profile Race w/ 6 inch spindle.

I know they're called "race" but that is what most BMX'ers (even street/park/trails riders) are using. So, "race" doesn't mean just for bmx race bikes.

I think maybe they called them "race" originally, to distinguish them from the burly "SS" ["super strong"] model that were more popular in "mid school" BMX when all bikes were tanks. https://www.profileracing.com/product/ss-3-piece-crankset/ These ones are also heavier duty: https://www.profileracing.com/product/dj-crankarm-set/
flag rusty-shackleford
Posted: Nov 29, 2017 at 20:18 Quote
best all around cranks out there. had them on my street, dirt, race and will be buying another set for my 26dj
flag adrennan
O+ FL
Posted: Nov 30, 2017 at 7:44 Quote
i will fly out to you and buy you a beer if you break profile cranks.
flag Nikolaialipon
Posted: Dec 11, 2017 at 12:13 Quote
Is it heavy to pedal a 28 / 13 gear ratio with a 165mm arm length if I will use my bike for street/dirt and commuting? Or would you prefer a 170mm / 175mm arm length? Thanks guys!
flag adrennan
O+ FL
Posted: Dec 11, 2017 at 12:40 Quote
Nikolaialipon wrote:
Is it heavy to pedal a 28 / 13 gear ratio with a 165mm arm length if I will use my bike for street/dirt and commuting? Or would you prefer a 170mm / 175mm arm length? Thanks guys!

I am rocking 25/11 with 165 cranks and wouldnt want much easier of a gear.
flag cmc4130
Posted: Dec 11, 2017 at 12:56 Quote
Nikolaialipon wrote:
Is it heavy to pedal a 28 / 13 gear ratio with a 165mm arm length if I will use my bike for street/dirt and commuting? Or would you prefer a 170mm / 175mm arm length? Thanks guys!

28/13 is a very normal gear ratio for 26" wheels.

Crank length doesn't change your "gear ratio" at all. Gear ratio is literally just a fraction comparing a front gear chainring to a rear gear cog.

It does change your "gearing" though--i.e. long cranks do make a particular gear ratio easier to turn. But, I'm not quite sure exactly how much easier. This article below says a change from 170mm to 175mm cranks makes it 3% easier. Not a huge difference.

Then there are other issues like, for not-tall riders, long cranks may be more cumbersome and end up being slower... I think it's better to pick a crank length based on your height, stance, style of riding etc., THEN pick your gear ratio. The trend in BMX right now is shorter crank arms for a more feet-together stance. I think that makes sense in DJ as well. But, not too short, so you feel like you're on a little-kid bike. So, like 165, 170, and 175 are the most popular. People seem to be moving away from 180's. (I used to run 180's, and now I definitely like 170 and 175 better).


https://www.momnium.com/impact-crank-length-gear-ratios/

https://www.bicycling.com/bikes-gear/components/what-you-need-to-know-about-crankarm-length

http://www.bentrideronline.com/messageboard/showthread.php?t=47407

photo
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