Tony Harrison Posted March 23, 2010 Report Share Posted March 23, 2010 At least I think it's 22mm - I'm yet to measure it - but on the Curtis website the next option is 25mm, and mine is definitely smaller than that. Anyway, I'm after something small and light - in theory it could be a pivotal post, since this is a kind of 24-style bike, except it's a 26, if you see what I mean. Any suggestions appreciated. So far a lot of shops don't stock anything less than about 27mm diameter. Thanks. Quote Link to comment Share on other sites More sharing options...
monkeyseemonkeydo Posted March 23, 2010 Report Share Posted March 23, 2010 Best bet is to get a 25.4 pivotal BMX (standard BMX size) one and get someone to turn it down to 22/22.2 for the Curtis. Quote Link to comment Share on other sites More sharing options...
Mark W Posted March 23, 2010 Report Share Posted March 23, 2010 Those pivotal posts are so soft you can file them down really, really easily. I made an old school one become a new school one with a file really quickly - I'd imagine you could get it to the right size relatively quickly if you cut it down a bit (which I'm assuming you could do anyway as you'd most likely be running it slammed?). Someone with tools could obviously do it a bit faster, but it shouldn't be a problem either way... Quote Link to comment Share on other sites More sharing options...
Al_Fel Posted March 23, 2010 Report Share Posted March 23, 2010 You up for a bit of riding soon then sunshine? Me and the mong have been hitting the streets quite a bit lately. Quote Link to comment Share on other sites More sharing options...
jt123 Posted March 23, 2010 Report Share Posted March 23, 2010 Or you could just cable tie a railed seat to your frame. Simple, cheap & light. Quote Link to comment Share on other sites More sharing options...
monkeyseemonkeydo Posted March 23, 2010 Report Share Posted March 23, 2010 Or you could just cable tie a railed seat to your frame. Simple, cheap & light. Bodgetastic . Edit: Just a quick thought- the 22.2mm posts are the standard size for those kids BMX racers which used to come with the mini seats that were then used in trials. I have no idea, however, if you can now get these kids bikes with pivotal posts... if so there may be someone producing 22.2mm pivotal posts for them. Long shot though! Quote Link to comment Share on other sites More sharing options...
Al_Fel Posted March 23, 2010 Report Share Posted March 23, 2010 http://www.tartybikes.co.uk/product.php?product_id=11022&category_id=91 Be a man. Quote Link to comment Share on other sites More sharing options...
Tony Harrison Posted March 23, 2010 Author Report Share Posted March 23, 2010 Ha ha, classic! Thanks for all the ideas. I have access to a lathe, so I could easily turn down a 25mm post, providing there's enough 'meat'. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted March 23, 2010 Report Share Posted March 23, 2010 I've got a 25.4mm pivotal post here in work, the internal profile of the tubing is elliptical and at it's thinnest point is 2.35mm. You'd need to take off 1.6mm to get it to fit so it'd be pretty slim there, but you could always whack some extra tubing or something in there to sort of buffer it? They get thicker towards the top too, get up to about 2.5mm, so it'd be less drama there. The thicker sides of the post are about 3 inches thick so you shouldn't have a problem there. /\ That was me (Mark), I'm just rinsing Premiere on Adam's computer... Quote Link to comment Share on other sites More sharing options...
monkeyseemonkeydo Posted March 23, 2010 Report Share Posted March 23, 2010 The thicker sides of the post are about 3 inches thick so you shouldn't have a problem there. Now that's some beefy tube . Quote Link to comment Share on other sites More sharing options...
jambo Posted March 23, 2010 Report Share Posted March 23, 2010 I had the exact same problem with my curtis i found a steel seat post and clamp got my mate to cut off the old post and weld a new 22mm post onto the clamp works a treat now. Quote Link to comment Share on other sites More sharing options...
Tony Harrison Posted March 24, 2010 Author Report Share Posted March 24, 2010 Thanks Mark, I reckon I'll do that, turn down a pivotal. Next thing, choice of saddle - maybe an Inspired perhaps... Quote Link to comment Share on other sites More sharing options...
Mark W Posted March 24, 2010 Report Share Posted March 24, 2010 Best part about the Inspired is the pretty much wipe clean seat cover. I had a Federal one on before, and as soon as I rode anywhere that wasn't clean tarmac it seemed to absorb any mud or dirt within about a 6 foot radius. Another one to look for is the Eclat Gonzo seat - slightly nicer looking pan (IMO, obviously), and a bit different... Quote Link to comment Share on other sites More sharing options...
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