Best way to spread seat rails a mm or two

[54ny77]

I need to spread an Aliante seat rail by a couple of mm to fit the seatpost cradle of a Nitto seat post. I'd prefer this route vs. hoping the clamping/pull force of the single binder bolt will "pull" the rails apart just slightly, i.e., spread them.

Suggestions?

[54ny77]

Edit: nevermind. Turns out it didn't need much tightening force on the post bolt to spread the seat rails apart. Fits just right in the cradle.

Learned something new today....:cool:

[ntb1001]

I’m assuming that “special” build is almost done??

Looking forward to the finished pics!!




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[54ny77]

hey there ntb....yeah i'm getting there. bit by bit...

had to file off the little tab on the problem solver seatpost binder bolt today, which i bought as a test case (to ensure right sizing). the right size is 8x19mm, so now i can hunt for a real n.o.s. campy bolt and pay 5x as much for basically the same thing....:p

[ultraman6970]

Thats the way,,, just force it in ;P

Edit: nevermind. Turns out it didn't need much tightening force on the post bolt to spread the seat rails apart. Fits just right in the cradle.

Learned something new today....:cool:

[pdmtong]

I need to spread an Aliante seat rail by a couple of mm to fit the seatpost cradle of a Nitto seat post. I'd prefer this route vs. hoping the clamping/pull force of the single binder bolt will "pull" the rails apart just slightly, i.e., spread them.

Suggestions?

Edit: nevermind. Turns out it didn't need much tightening force on the post bolt to spread the seat rails apart. Fits just right in the cradle.

Learned something new today....:cool:

typically just tightening the bolt will pull the rail into the cradle if its at least 1/3-1/2 way there already. might need help pulling the rails closer if the gap is more. basically just tighten and see how its going...help as needed.