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Maximum seat post extension???

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Maximum seat post extension???

Old 09-21-15, 04:00 PM
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bikerwannabe
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Maximum seat post extension???

New to folding bikes. The Downtime NOVA seatpost is listed as 550mm long. How much of that can be used/extended? What I am really asking is what is the minimum amount that should remain unextended.

I don't see any minimum/maximum marked on the post itself, as I have seen on other bikes.

So I'd like to mark it myself to avoid any issues as multiple people may be riding/adjusting this bike to their size.

thanks
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Old 09-22-15, 08:52 AM
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fietsbob
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IDK Yours ,(ask the dealer?) Brompton's seat post is Flared at the end It wont come out pulling it Up

so that is the Maximum Height .

The Bushing width is where the support Is ..

Last edited by fietsbob; 09-22-15 at 01:17 PM.
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Old 09-22-15, 11:14 AM
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In general, the seat post must be in the seat post tube for a length equal to at least 2.5 x the diameter of the seat post. If the seat post diameter is 33.9mm, then at least 85mm should be in the tube.
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Old 09-22-15, 11:19 AM
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Originally Posted by Pinigis View Post
In general, the seat post must be in the seat post tube for a length equal to at least 2.5 x the diameter of the seat post. If the seat post diameter is 33.9mm, then at least 85mm should be in the tube.

Thank you- That is very helpful!
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Old 09-22-15, 01:22 PM
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I wouldn't mark an aluminum seat post with anything more than a Sharpie.
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Old 09-22-15, 02:02 PM
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bikerwannabe
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Originally Posted by fietsbob View Post
I wouldn't mark an aluminum seat post with anything more than a Sharpie.

okay - good to know. (I was going to use nail polish or tape)
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Old 09-22-15, 02:09 PM
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sliding to fold seat posts will wipe off most marks I just pull my Brompton (extended) post up High enough to Ride ,

and its the same every time , because The height of my needs is unchanged ..
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Old 09-22-15, 02:57 PM
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Originally Posted by bikerwannabe View Post
okay - good to know. (I was going to use nail polish or tape)
Silver or Gold sharpies work well on black anodized aluminum seat posts.
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Old 09-24-15, 02:41 AM
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Maybe there are some after market markers that can mark aluminium?
Mezzo and birdie got this right by anodising increments. They stay on for years.
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