Long 25.4mm Seatpost needed

Hi, I've been looking for a 25.4mm seatpost longer than 400mm for my folder as i'm currently way past the limit line! Appreciate it's a bit of a long shot but figured someone on here would have some tips. I've done a quick UTFS and couldn't find much.

I've looked into getting a 500mm long unicycle seatpost but the end is built for the directly bolt fixed unicycle seat. http://www.unicycle.uk.com/udc-heavy-duty-chrome-seatpost-500mm-25-6.html/?___store=default

Also thought about getting a 22mm post and using a shim but can't find a 22mm tube longer than 400mm. Any ideas would be very helpful

The seats for an ikea folding bike, needed a cheap folder when my office stopped providing cycle parking, it's fun to ride but I don't want to wreck the frame by ignoring the limit line

Thanks!

I have long 25mm seatpost. Not sure how long. Will come back later.

25.4 is BMX size.

Before the current wave of slammed seats and pivotal setups, BMXers rolled with pretty long orthodox seat posts in 25.4 - just a lead for you to follow.

Also, you could potentially use a modest 25.4 length post as an "extender" like bromptons have. Just lop the end off, cut a slot, then find a clamp. You could then insert a 22mm seatpost in the top.

That's great thanks EEI, I'm in Manc so I'd pay postage if that'd be no hassle to you.

DFP good idea thanks, I've got a spare 25.4 knocking around so I'll have a go at 'bromptoning' it later. I'll post the results once I've got a 22 to fit into it.

cool, im in the same position. i think im going to go for the full unicycle setup inc unicycle saddle. archi come play polo in manc

I've got an old mountain bike I could polo on - not got much coordination though!- where do you play?

Sorry, mate. Measured it and it's also around 40cm.

Can't help with the seatpost but that bike looks wicked fun!

EEI - thanks for checking, got the 22.2mm post ordered now so I'll post the results.

Thanks! It's good fun for getting around town - I'm going to add a 3 speed rear hub as it's a bit too spinny at the moment - not sure how it'll handle at speed!

Resurrecting this from the depths. I see @Archigeek hasn't been online for over a year... but I'm wondering if anyone has any good leads for a super long seatpost?

I am looking into the unicycle route, but I think the folding bike would look even more stupid if I tried a unicycle seat on it (so far found only proprietary mount).

Okay, found that SJS have one, but also the same stuff on the auction site. Longest I could find is 410mm from the UK. A 450mm was available from China, but is out of stock. Got a 410mm on the way.

i'm looking for a cheap or free 25.4 seatpost, average length, so if you guys have any let me know please