Seatpost rattles in frame (w/o clamping)

[ABogle]

Hi all, I've ordered a frameset, it takes a standard 27.2mm seatpost.

I bought a Prime Primavera Inline Carbon Seatpost. It fits fairly snuggly in the seat tube at the clamping area (without actually tighening the clamp).

However if I insert the post before clamping I can still wiggle it and I can hearit rattle against the inside of the seattube (lower down not at the clamp area). Tighening it of course remove the ability to rattle it around, but I haven't built up and ridden the bike yet.

Is this normal for seatpost post or is there something wrong here and is it likely to creak once built up and ridden?

Apologies if this is a moronic question. I haven't owned for a bike w/ a round seatpost for years.

[AJS914]

It doesn't sound like a problem at all. Use carbon paste for your installation. You should not have any rattling.

[Nickldn]

If the seatpost is too far inside the seat tube it may rattle, even if clamped in tightly.

If this is the case, even after using carbon paste and tightening to the right torque, then the only remedy may be to cut a few centimetres off the seatpost.

[ms6073]

If the seatpost is too far inside the seat tube it may rattle, even if clamped in tightly.

then the only remedy may be to cut a few centimetres off the seatpost.

Not sure I am following the logic there as that seems counter intuitive. Most seat posts require at least 90-100 mm of the post to be inserted into the seat tube and once inserted to the manufacturers minimum insertion line, then the seat tube really should only allow rotational motion and not much if any lateral play/woble. If insertion further beyond the manufacturers minimum insertion point starts to allow for increased woble/lateral play, then I would suspect there is something wrong with the seat tubes internal bore.

[ms6073]

Deleted

[ABogle]

Thanks for your responses guys, everything I described is w/ the post inserted between the min/max insertion depth.

I volunteer at a bike hire on weekends, all dirt cheap bikes, I will see how they compare when I get a chance. Although normally if I completely loosen the clamp to adjust the saddle height for someone, the post will just drop all the way into the seat tube without any reistance.