Post to flatmount adapters

Gari · Post by **Gari** » Wed Apr 07, 2021 12:24 pm

Has anyone got first hand experience of these adapters? I’m looking at some Force brifters, the are post mount while the frame is flat mount. They’re a bargain, but only if the will work well!
Thanks in advance!

In Reverse · Post by **In Reverse** » Wed Apr 07, 2021 12:36 pm

I've used one on the rear for several years on an old hardtail. Can't imagine you'd have any issues with either tbh.

Gari · Post by **Gari** » Wed Apr 07, 2021 12:38 pm

Thanks in reverse. Bargain ahoy then

In Reverse · Post by **In Reverse** » Wed Apr 07, 2021 12:46 pm

How much are the brifters?

faustus · Post by **faustus** » Wed Apr 07, 2021 12:56 pm

Been using TRP ones on my Camino for the past year or so, all good and trouble free

Gari · Post by **Gari** » Wed Apr 07, 2021 12:59 pm

£300

Lazarus · Post by **Lazarus** » Wed Apr 07, 2021 1:05 pm

I thought you could not do post to flat - ie if the caliper is POST it wont go on a flat frame- there is no adapter for this
You can do a flat mount calipe ron to a post mount frame with an adapter
As in reverse has an old hardtail i assume its post mount FRAME and flat caliper

Google seems to agree with this assesment but i have no real world experience of this

Gari · Post by **Gari** » Wed Apr 07, 2021 1:07 pm

So I can and I can’t!!
Schrodingers brake mount adapter then

That said, I’m pretty sure I read it’s the opposite to what I now can’t do!!

sean_iow · Post by **sean_iow** » Wed Apr 07, 2021 1:26 pm

Lazarus wrote: ↑Wed Apr 07, 2021 1:05 pm I thought you could not do post to flat - ie if the caliper is POST it wont go on a flat frame

So did I so I googled it

https://www.merlincycles.com/trp-flat-m ... source=PHG

Post caliper to flat mount frame adapters.

In Reverse · Post by **In Reverse** » Wed Apr 07, 2021 1:28 pm

Lazarus is right, sorry Gari. Just looked back through some old photos and that's confirmed I was talking through a hole in my hat.

edit - this thread is a real voyage of discovery now...

Gari · Post by **Gari** » Wed Apr 07, 2021 1:38 pm

https://www.bikehugger.com/posts/road-d ... ost-mount/

https://www.merlincycles.com/trp-flat-m ... 89957.html

Seems it can be done either way then:)
Rear might be an issue on a small frame52)
I might send Mason an email to check!!

sean_iow · Post by **sean_iow** » Wed Apr 07, 2021 1:44 pm

In Reverse wrote: ↑Wed Apr 07, 2021 1:28 pm edit - this thread is a real voyage of discovery now...

I looked into it years ago when flat mount frames were a new thing and it wasn't possible. The adapter manufactures seem to have caught up now, which is good.

They say you learn one new thing a day... I wasted today's new thing on adapters for a frame I don't own

Gari · Post by **Gari** » Wed Apr 07, 2021 1:46 pm

glad to be of service!!

faustus · Post by **faustus** » Wed Apr 07, 2021 7:50 pm

Thems the trp ones I've been using with post mount calipers and flat mount frame...

Edit: should clear fine still, and I guess you could use a 140mm rotor if you needed to for a smaller adapter

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