Crankset with 150mm crank arms

Triathlon Forum
1

Can anyone suggest a source for a crankset with 150mm arms, square taper, 110 BCD, that can accept double chainrings? I’m experimenting with different crank arm lengths, so I don’t want to break the bank on this purchase.

2

http://www.origin-8.com/?page_id=91&short_code=Alloy+Crank+Set&cl1=CRANK+ARMS+%26+SETS

Note that although it says these are single speed, they accept double chainrings without difficulty. These are the ones that Cobb apparently suggests. I currently have them on two bikes in a 155mm.

Can anyone suggest a source for a crankset with 150mm arms, square taper, 110 BCD, that can accept double chainrings? I’m experimenting with different crank arm lengths, so I don’t want to break the bank on this purchase.

3

wow. that’s pretty cool. so are these 130 compatible? Can I put my 130 sram-aero-chainring right on these things? And, has anyone stripped these crank arms due to poor quality under high power? Are they strong?

4

I’m using the Origin 8’s also. I have two. 155 and 160.

Both are setup w/ double rings. Work great.

Tony

5

Sinz and Origin 8’s work. Both are cheap on Ebay, and more abundant in 145 and 155.

6

Thanks everyone. I was looking at the Sinz and Origin 8s, but wasn’t sure if they’d accept double chainrings. They do, so I’ll give 'em a shot. Thanks again.

7

Question:

My current FSA crankset is a “road double crankset with a 130 BCD” (Shimano, FSA and Sram) That means I can attach my aero chain ring to any 5 point 130 BCD.
Are these Origin 8’s 130 BCD or some other dimension? Track bikes tend be 110 or 115 BCD if I am not mistaken… (but I don’t know)

Anyone know if I can hook my SRAM aero 130 BCD chainring to one of these origin 8’s, 160mm crank arms???

8

Question:

My current FSA crankset is a “road double crankset with a 130 BCD” (Shimano, FSA and Sram) That means I can attach my aero chain ring to any 5 point 130 BCD.
Are these Origin 8’s 130 BCD or some other dimension? Track bikes tend be 110 or 115 BCD if I am not mistaken… (but I don’t know)

Anyone know if I can hook my SRAM aero 130 BCD chainring to one of these origin 8’s, 160mm crank arms???

They’re 110 BCD. 130 BCD chainrings won’t fit.

9

Dumb followup question – what’s the spindle length for the square taper BB to match these cranks with an existing standard double crankset (e.g. megaexo)? 68x108 maybe? Trial and error? Tried the search, didn’t find any mention of this. Thanks -J

10

I’ve used 68 x 107 and 68 x 108, both worked fine
.

11

Fantastic. Thanks! -J