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New School BMX 2004 - Now => New School Park, Street & Dirt => Topic started by: BENDYCAT ELEVENTEEN on January 16, 2012, 10:39 AM
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Right gonna see what you guys know and think about pivotal seat post and seats
I guess a seat and post combo is going to be lighter - but i would like to know if you have a pivotal seat - which post to go for in length, weight and compound
if a seat is being slammed or close why are there long post - is there a prob in getting a small length post ?
disscuss please ;)
cheers B ;)
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Pivotal = easy to adjust/setup, light.
Anything will do (avoid steel tubing), just cut em down like you would normally if you want your seat slammed.
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have used em in the past, they are much lighter than railed set ups. I think the long posts are just for people who may want to have more height rather than slammed? ???
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Most (almost all) Pivotal posts are way short. You can get long ones but you have to hunt then out a bit.
Pivotal seats aint as strong as railed seats, and they are usually very small. But there are so many available you'll probably find one you like
Its way simpler, tidier and lighter than a railed set up. I prefer a railed seat but I dont think there are any nice micro adjust posts for railed seats (the "splines" are always so small and they slip when you land sitting on the seat.
I ended up using a railed seat on a pivotal post (one of the first MacNeil ones that you CANT slam! ;)).
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I just wondered if it doesn't matter if there is loads of post down the seat tube or just enough as the seat is going to sit low and not sat on till cruzing
is 75mm too short ? what would be the next size up if that is too uncool and low ? ???
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My Subrosa has a lovely seat on it, the post on that is built in so no adjustment. The pivotal seat on my Hoffman is a Hoffman one and again is padded and comfy, I can't be doing with those little plastic ones!!
75mm does seem a little short to me. :-\
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well with out givin the game away (big grin >:D) i might just have a NS that i wanted for a long time :shocked:
it has a plastic combo on it - i don't mind them, but i do have my Federal slim seat that i had from when i was going to build a WTP - so will prob put that on and get a small post
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i am a convert to pivotal.
i have been playing around with a wedge insert too. then i dont use a seatclamp.
works on the same principal as a quill stem, a longer bolt goes through the seat and down the post to a wedge, i cut 4 slots into the bottom of the post to allow for expansion, tighten up and hey presto
i use a 8mmx 125mm high tensile bolt.
:)
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mine is the integrated type at the seat post
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a 75mm post will be run slammed, or as close, you always want 50-60mm of insertion depth, the more post showing, the more you want inserted, ooer!!!
I have a deluxe combo seat on my Alone with about 3 1/2 " of post showing, leaving 2 1/2 in the pipe. Its a good height, not too high to get purple bruises up your thighs, not too slammed so if you sit down you can't get back up, and low enough to not get laughed at by the kids!!
My first piv was over a foot long, I cut it down to 7"
MM
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right chance for you lost to show the length of yer post :shocked:
got pic's of yer seats ;)
so 75 bit low (looking like that at the mo ) next size up is ?
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I've got 26mm showing and 194mm down the tube. Couldn't be arsed to trim :D
Always rode with the seat slammed anyhow, and like Alex said, railed tends to pop if you land with weight on the seat (although I've got a DK micro adjust from 1998 that's forkin good, but it's in the odd late 90's DK seat tube size - fits a General or SOB).
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Im running a 135mm seasons post and have it set just above the max height mark. Fits me just nice without looking like i'm sat on a pogo stick
(http://i1182.photobucket.com/albums/x455/oldschoolace/P1010562.jpg)
Come on then Bendy, what have you snaffled? :daumenhoch:
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gayest bike in a while that......
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(http://www.radbmx.co.uk/archive/albums/g171/jarvicseven/DSC01961.jpg)
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Always thought they should have pins on the outside of the vice part of micro-adjusts, too much insto weight on em = rails spread and pap out the sides.....
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Cheers Darksunday, from you that's a compliment :daumenhoch:
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do you ride that bike.
man them tyres are clean :)
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;D
Hoping to. Built it over christmas and got a few shots before i wreck it. Not been out on it yet as the weather is so piss poor >:(
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mine...the red one is 75mm with about 20mm showing, the gold one is 125mm with about 75mm showing
(http://www.radbmx.co.uk/archive/albums/pp169/prideofthorne/bmx/post-1.jpg)
(http://www.radbmx.co.uk/archive/albums/pp169/prideofthorne/bmx/post.jpg)
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It's not in my hands yet as jimwise picked it up for me, trying to get him off of it to send it is proving hard ;D
some may know what it is - but all i'm showing for the mo is this sneak peek :D ;D
(http://www.radbmx.co.uk/archive/albums/tt183/ELEVENTEENBENDYCAT/stereo%20bmx/BSE7-1-1.jpg)
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Here's mine:
(http://i1236.photobucket.com/albums/ff443/dannywhack/Pivotal.jpg)
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;D
Not been out on it yet as the weather is so piss poor >:(
definitely gay.
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;D
Not been out on it yet as the weather is so piss poor >:(
definitely gay.
:2funny: You know what they say about people who are always calling others gay dont you Darksunday?!
*cough* CLOSET *cough*
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This is the best pic I have on photobucket, and I can't be arsed to go in the lounge and take a new photo!!
Its not pivotal, but its what 3 1/2 inch of shaft looks like!!!
Still love my unique (cheers Ronnie) hutchesque seat clamp.
(http://www.radbmx.co.uk/archive/albums/vv320/munnyella/Bikes/P6110026.jpg)
(http://www.radbmx.co.uk/archive/albums/vv320/munnyella/Bikes/P6110022.jpg)
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i'm not showing you lot mine. it's way too long. :LolLolLolLol:
ride mainly flat these days so need a higher post. i got one of the long primo posts 300mm + long . think rad shop may have em. sure i got mine there.
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;D
Not been out on it yet as the weather is so piss poor >:(
definitely gay.
:2funny: You know what they say about people who are always calling others gay dont you Darksunday?!
*cough* CLOSET *cough*
:LolLolLolLol:
touch tails?
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I run my seat pretty high. My weak leg means I need the safety net of a seat I can actually sit on sometimes. I didn't like the positioning of a pivotal set up with it set high so I went back to a micro adjust & railed seat.
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Shadow mid pivotal seat
Can't remember the make or length of the post, it's more or less as high as it'll go (bout an inch below the bottom of the top tube)
Low enough to be out of the while riding, high enough and comfy enough for a sit down while chatting shit.... ;D
(http://www.radbmx.co.uk/archive/albums/m48/markw33/7-1-12001.jpg)
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adding a couple of questions
are the post all the same size hole ~ 25.4 ?
thermalite ? throughts
over alloy or not ?
cheers for the seat post pic's gents ;)
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Have heard that the thermalites are not too strong but unless you intend to run it really high i cant see there being an issue. I would just go with what you like/suits the bike :daumenhoch:
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a plastic fooking seatpost?
thoughts?
grow up and buy a fooking thomson.
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adding a couple of questions
are the post all the same size hole ~ 25.4 ?
most bmx frames are 25.4mm. in fact it's pretty rare to find a different sized seat tube/post, standard made some of their frames in a larger post size, macneil tried going backwards to 22.2mm last year too,
25.4mm is generally considered industry standard.
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Alert Alert - darksunday gave a solid answer :shocked: second post after the first above with no p!ss take answer :shocked:
;D
cheers mate - just didn't know if they p!ssed around like bitd
well i want it a bit higher than it is a the mo - slammed - but not too high - so some thing like a 110 /115 might just do the trick ;)
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Go for 150-175 then, you get the option then, wight difference is nothing.
MM
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Here's my seat and post. Its one of the very first pivotal posts with an old Bicycle Union railed seat. The web's at the top of the post mean you cant slam it, but the post is also a larger diameter toward the top.
A railed seat is stronger than a pivotal seat. But also, like Rob said, you can position the seat better. Pivotal seats are often a bit to far forward (although getting the cool oddy pivotal seat post helps cos it sets the seat further back)
I like the simplicity of the Pivotal system. Most micro adjust posts (thompson) look too fussy with all those bolts.
(http://www.radbmx.co.uk/archive/albums/r313/alexleech/RailPivotal1.jpg)
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Here's my Kink one, not sure on the length but it's enough so you dont feel completely squashed!
(http://i1004.photobucket.com/albums/af169/matt111074/BMX/04012012394.jpg)
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To actually answer the question; only buy a stump post if you're slamming it. Stick to alloy for reliability and it you're running the seat up a bit be sure sure leave 2-3" in the frame for strength. Cut off what you don't need if you're fussed about weight. For the odd once here and there, I really wouldn't bother. If you leave it uncut it'll be easier to sell should you ever want to.
Good shout on the Thomson Joe ;)
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Cut off what you don't need if you're fussed about weight. For the odd once here and there, I really wouldn't bother. If you leave it uncut it'll be easier to sell should you ever want to.
If you change your seat or change your frame you might have to change the height of your post (to accommodate a different standover height or different height seat) so its better to leave the post a bit long. Its not like a few inches of ally tube makes for much weight saving anyway
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Shadow mid pivotal seat
Can't remember the make or length of the post, it's more or less as high as it'll go (bout an inch below the bottom of the top tube)
Low enough to be out of the while riding, high enough and comfy enough for a sit down while chatting shit.... ;D
(http://www.radbmx.co.uk/archive/albums/m48/markw33/7-1-12001.jpg)
thats tidy :daumenhoch:
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well here is the seat /post in question
more on this bike in a new thread
cheers all for helping - the new seat will go on with about 1-2" showing or close when i get one and see how it looks
(http://www.radbmx.co.uk/archive/albums/tt183/ELEVENTEENBENDYCAT/stereo%20bmx/BSE2.jpg)
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Yeah, get rid of that pony looking thing. Get a decent seat & post on it.
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In my opinion pivotal seats/posts are massively superior to the railed seats/posts just for the fact that they just don't slip.
Check out the Eclat torch offset seat post for you guys that wanna position the seat a little further back on the post....
Cheers Paul
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http://www.eclatbmx.com/products/seats-seatposts/torch-pivotal-seatpost-offset/
I like that. I'm partial to a bit of Eclat stuff.
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look like a piece of art 8)
any one find a picture of one on a bike ?
just don't know if it would translate to look right or a bit odd ?
have seen a lay back pivotal on ebay some where ???
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Liking that eclat! :daumenhoch: Subrossa do a layback which would give you a very similar offset :daumenhoch:
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That Eclat is pretty much the same at the oddy one, but the oddy one is longer
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I would go with the mid size - seat going on is this
(http://www.radbmx.co.uk/archive/albums/tt183/ELEVENTEENBENDYCAT/stereo%20bmx/SNV10304.jpg)
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I run a Federal Pivotal Mid Size as seen in Bendy's pics, bolted to a Macneil Stump; I don't ride it fully slammed, but have about three inches showing (ohhh-err). I find it a perfect setup for slouching on in between rampwork.
I know Macniel do a full length pivotal post if you feel the need to ride with your saddle at an Old School height. :daumenhoch:
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I tend not to sit on the old school seats unless it's like on a long run like the London run
i don't mind it slammed a bit and as toy say 2-3" is ok for me - but it's not going to be OS style ;)
All i have here in my hand is my seat :'( missing a bike and a new post - now i just gotta wait a couple of weeks >:( ;D