Help!! Is my Sestpost long enough?? 🤕

So I may have now acquired an older steel Kona frame. How much safer does everyone think this seatpost is in a steel frame as although I’d prefer to sell it - I’m worried no one will buy it as it’s so short!!!
 
Roadies love a short post.

If you're worried, sell it and get a longer one.
A steel frame will take more cycles before failure, but you really want a couple of inches snug fit below the bottom of the weld.
Everything breaks eventually, but we can make things live longer with more care.
It's a balance.
 
Roadies love a short post.

If you're worried, sell it and get a longer one.
A steel frame will take more cycles before failure, but you really want a couple of inches snug fit below the bottom of the weld.
Everything breaks eventually, but we can make things live longer with more care.
It's a balance.
Ok I’ll try and sell it. If anyone is interested or knows anyone who is interested please let me know. It’s a 27.0mm obviously being for old Kona’s!
 
Loads of old road frames take 27dead - and the posts of the 70s were about 120mm long, whereas modern ones are 400, so there should be demand for this one👍
 
Joininig discussion with the same question: is my seatpost long enough? From my perspective and my knowledge it's ok, but it will be pleasure to read another users opinions.
So violet is for length above top of seat tube, green for seatpost insertion and yellow for insertion above the bottom edge of top tube. All dimensions in cm.
This is a steel frame with ritchey logic (non-prestige) tubing and bike purpose will be regular country and trail riding.
IMG_20250206_210932_064.jpg
 
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That's fine.
Your insertion below the reinforced section of tube is enough to avoid the rocking around the welds.
Just check the post is a snug fit.
Slack posts kill frames 😪

Obviously if you are a larger person with long arms who loves nothing more than riding down long flights of steps whilst seated, you might outlast the frame, as long as you don't crash😉
 
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