Height adjustable seatposts

[Newboy]

Does anybody have experience with the height adjustable seatposts like the Joplin? The idea seems very good. Where do you get them and are there alternatives? Remote adjustment or lever under the saddle?

[Bakkie]

I saw one in the new bicycling mag, looks very neat. Wont mind one on my bike.

[AndreZA]

I saw some at Mikes' Bikes and Northcliff cycles. Not cheap.

 

 

[Hog_]

Also not for weight weenies.

 

 

 

[Hog_]

 

are there alternatives?

 

How about:

Drill a smallish hole through the frame a little above the front d?railleur. Put a bolt through the hole and fasten with a nut on the other side. Remove seatpost and put a long spring of same diameter as seatpost into tube. Now you just need a way to operate the seatpost clamp, as well as stop the saddle from going too high, and you're sorted!

 

 

 

 

[Velouria]

 

Does anybody have experience with the height adjustable seatposts like the Joplin? The idea seems very good. Where do you get them and are there alternatives? Remote adjustment or lever under the saddle?

 

I have a Maverick Speedball (which is now the Joplin - they sold it to them). Works wonderfully. Great for descending on my bike's geometry, or for just changing the height of the saddle a little when my legs get sore.

 

There are non remote options as well. (the lever sits under teh saddle)

 

Try give Maverick (in Natal or CT) a call - they might have some old stock of the Speedball left.

 

[KDEE]

No laughs Hog, thats a really inventive idea... Spring should be at exact height to maintain your normal seatpost and return to correct height when released.

 

Can see it, ridin along, reach down, loosen QR clamp, push down on seat with bum until desired height is reached and tighten QR clamp.. Release QR clamp when finshed jumping, etc, etc and the seatpost returns to set height!

 

You are a genius

 

Now to just get over this frame drilling move....

 

 

[SwissVan]

 

I saw one at one of the local bike shops here, this one had a long lever under the seat and not a remote. Had a close look at one off the shelf and must say that the quality looks good but it is heavy (by feel, no idea of the actual weight).

Don think Sauser and Co. will be racing with them.

Great if your'e not to stressed about a few extra grams and do a lot of steep downhill riding.

 

 

[Hog_]

 

You are a genius

 

I know.

 

 

I suppose a length of guitar string could work well to stop the seat once it gets to the desired height, if you tie it to the frame and the seat.

 

I wonder why none of the manufacturers have built a frame with a built-in adjustable seat post...

 

 

 

[MintSauce]

Have a look at the Gravity Dropper. A friend uses one and he swears by it. I have tried it briefly and love it.

 

$250 and they ship worldwide for free

 

http://www.gravitydropper.com/index.html

 

 

 

 

[Bakkie]

No laughs Hog' date=' thats a really inventive idea... Spring should be at exact height to maintain your normal seatpost and return to correct height when released.

Can see it, ridin along, reach down, loosen QR clamp, push down on seat with bum until desired height is reached and tighten QR clamp.. Release QR clamp when finshed jumping, etc, etc and the seatpost returns to set height!

You are a genius

Now to just get over this frame drilling move....

[/quote']

 

Guys guys guys....focus this is serious!

 

You don't have to drill a hole. Just make a spring and before you drop it into the tube measure it and make a spacer.... take a broomstick and cut it to size. Rather cut it too long at first as a test and go from there. The spring can then rest on the broomstick.

 

It will be lighter than the original expensive version.

[Iwan Kemp]

I've been using a Joplin R. They retail for around R3k, so yeah not cheap. PM Shamus, he is the guy to speak to. Works i'ts supposed. If you drop your saddle for sgl track, technical sections or downhill it's definately the way to go. I'd defiantely buy one again and again.

 

Joplin is not the best option though.

Edited November 24, 2010 by The Crow

[Hog_]

 

I've been using a Joplin R. They retail for around R3k' date=' so yeah not cheap. PM Shamus, he is the guy to speak to.

 

As far as using it is concerned: it's the bomb! Works exactly like it's supposed. If you drop your saddle for sgl track, technical sections or downhill it's definately the way to go. I'd defiantely buy one again and again.

[/quote']

 

I would love to get one, since right now I never drop the post, even though the saddle gets in the way. When you're having fun on the trails, it really breaks momentum so stop and drop/raise that seat all the time. I've felt a few times that my saddle is just in the way when carving through singletrack or doing drops or jumps. With my current bike though, it's not really an option: The post costs half of what my bike costs, and the bike already weighs more than a VW Beetle, so I'd rather not make it heavier. One day, when I'm building my AM bike it'll be on the shopping list for sure!

 

 

 

[Hog_]

Okay, so this morning in the shower (my best ideas always come in the shower when I don't have a pen & paper handy) I actually had quite a cool idea for a seatpost, using the spring-in-frame method, a specially shaped seatpost, and a simple clamping system.

 

I thought I could maybe register a patent and try to sell the idea, but a quick search on google patents revealed that there's already a bunch of patents out there that are based on the idea. I'd still be keen to have a few manufactured. Anyone have contacts that can work with scandium or a similar metal?

 

 

 

 

 

[Newboy]

Has anybody tried the Joplin? They are available in SA.

[TNT1]

Why would you want a height adjustable seatpost? I mean one that is more adjustable than a regular one?