Author Topic: Bigrock lefty  (Read 2009 times)

svedkoko

Bigrock lefty
« on: November 12, 2025, 02:41:38 PM »
I am slowly building up a race gravel bike based on mtb xc frame so it can fit 2.25 tires.

I had an idea recently, what if you use a Cannondale lefty, but rigid. Would reduce the resistance quite a bit having only one leg. Unfortunately, there seem to be no mtb rigid lefty from Cannondale.

I found this bad boy
https://www.aliexpress.com/item/1005008869260998.html?spm=a2g0o.productlist.main.1.61251f68DaDFuL&algo_pvid=804d8e0e-3aea-4840-b6cc-94a89a55e3fc&pdp_ext_f=%7B%22order%22%3A%225%22%2C%22eval%22%3A%221%22%2C%22fromPage%22%3A%22search%22%7D&utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A1005008869260998%7C_p_origin_prod%3A

Although i have seen none of the reviews, zero builds with this on google. Absolutely no information.  What do you think of this? Bigrock frames have some good reputation out there.

Thanks

Crash217

Re: Bigrock lefty
« Reply #1 on: November 12, 2025, 03:02:40 PM »
i say go for it

pmark

Re: Bigrock lefty
« Reply #2 on: November 12, 2025, 03:13:49 PM »
It seems quite heavy compared to a normal carbon fork.  You would probably be better just getting a lightweight suspension fork with only a few cm of travel.  Or a suspension stem. 

svedkoko

Re: Bigrock lefty
« Reply #3 on: November 12, 2025, 10:28:22 PM »
It seems quite heavy compared to a normal carbon fork.  You would probably be better just getting a lightweight suspension fork with only a few cm of travel.  Or a suspension stem.

It is heavier, yes. Although resistance reduction dues look like tempted trait. 98% of the time gravel races have flats where im from, so weight is less of an issue)