Re: [CR]27.2mm seat post - how close should it be?

Example: Events:Eroica

Date: Thu, 28 Feb 2008 16:43:21 -0700
From: "John Wood" <>
To: "dan kasha" <>
Subject: Re: [CR]27.2mm seat post - how close should it be?
In-Reply-To: <>
References: <>
cc: CR <>

Dan, I see no one has piped up, so I'll give 'er a shot. I'd say the proof is in the pudding. Normally the first negative side effect of an undersized seatpost is the unwillingness to stay where you put it. If it's not slipping I'd say you're fine. I have noticed that posts do seem to vary a bit in snugness in the frame, and I've had 'em to the point where they won't stay put. Obviously then you need to try a different post. And I'd also add that slightly undersized is a whole lot better than slightly over-sized!

John Wood Red Lodge, MT

On Wed, Feb 27, 2008 at 12:18 AM, dan kasha <> wrote:
> I have a frame that takes a 27.2mm seatpost, and I
> just replaced the old post with an SR 27.2mm seatpost
> with a clamp similar to the old Simplex posts. I
> really like that design.
> But it feels loose in the frame. I measured it with
> good calipers. And while the old post measures pretty
> much at 27.2, the new one measures more in the range
> of 27.08 to 27.12. Though the post is clearly stamped
> saying 27.2mm.
> It tightens up fine in the frame, and everything felt
> great on my ride. Should I be at all concerned about
> this?
> Thanks
> Dan Kasha
> Seattle, Wa - was a perfect day to ride today.
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