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3
votes
3answers
46 views

Suspension seat post is loose

Is it ok that a suspension seat post like the one shown below (source: cyclande.com) is actually a bit loose (moves a bit left-right and probably also up-down). The vendor told that for such seats ...
0
votes
1answer
63 views

Will slightly slimmer seatpost make a difference?

I have an old Peugout bike that needs a 23.8 (to the best of my measuring abilities) seat post. I can't find such a seatpost in all the obvious shopping places, but I did find a 23.4mm one. I'm just ...
0
votes
2answers
78 views

Seatpost Overextension

I've been riding with my very short seat post extended well past its maximum extension line for quite a while now. Looking at the seat post itself I don't see any signs of deformation or damage other ...
0
votes
1answer
54 views

Help me buy a bike seat post

I know that my bike has a 25.4 mm diameter seat post. So can I purchase any old 25.4 mm diameter seat post from eBay and expect it work with my existing bike seat? Here are some pictures of my ...
1
vote
2answers
107 views

Will bending the seat post two inches forward cause any unforeseen structural issues?

My current bicycle is a 2013 Specialized Allez C2. I'm thinking of using a conduit bender to bend the angle of the seat post two inches forward. A conduit bender can bend one inch for every 3 inches ...
2
votes
4answers
235 views

How to remove completely stuck saddle post from frame [duplicate]

I am helping a friend fix his bike that he got for free. Everything went well, except that I cant raise the saddle. The seatpost is really stuck in the frame. The clamp was easily removed. When I ...
0
votes
1answer
44 views

Quick-release seat slipping down [duplicate]

My bike's quick release seat has been slipping down recently. I noticed when my (pro) biker friend remarked how low down the seat on my bike was, and helpfully readjusted it for me. Biking became ...
1
vote
1answer
93 views

Problem during installation of Rockshox Reverb Stealth product

I am following the SRAM official procedure on a very similar bike to the one reviewed. However, I am stuck at this part: unthread the hose from the remote's barb. I just can't. I am holding the hose ...
2
votes
2answers
304 views

Bicycle Seating Posture Ergonomics

Road bikes have a forward bent seating posture, mountain bikes have a straight seating posture. I was wondering which of the above seating postures (of road bikes or mountain bike) is better for ...
2
votes
1answer
246 views

How can I mount a 25.4 mm seat-post on a frame that needs a 27.2 mm seat-post

My bike has no rear suspension. So I thought of putting a suspension seat-post on it. Unfortunately the only suspension post available in my city is a 25.4 mm one. I have added some scrap metal to fix ...
2
votes
1answer
210 views

Riding bicycle without using seat

I've almost always rode on a BMX, so I've never been sitting while riding because of how low the seat is.Now I've had a chance to try out a more normal bike but I found sitting on the seat to be very ...
10
votes
3answers
519 views

Why do some triathlon seatposts go straight up and down instead of at an angle?

Why is it that some triathlon bikes have a seat post that adjusts straight up and down instead of the more standard axis that aims at the bottom bracket? This means that if you raise (or lower) the ...
0
votes
1answer
52 views

Dropper seat post with 150 mm of travel

Are there dropper seat posts with 150 mm of travel on the market other than Rock Shox Reverb Stealth and Kind Shock (LEV & Supernatural)?
5
votes
2answers
1k views

Is it possible to compensate a short sized frame by adjusting seatpost and stem?

Could you achieve the same position you would have on a bigger frame by raising seatpost and stem? And how could I adjust those to "simulate" a bigger sized frame?
2
votes
2answers
212 views

Remote drop seatpost cable route

What are some options for a seatpost remote cables on frames without a pre designed route? I'm considering a dropper post but would only do this if I was able to mount a remote as I like the ...
4
votes
2answers
108 views

Daily Adjusted Seatpost for Trainer Bike

I just got Nashbar's Ascent Fluid trainer and put an old big-box store bike on it that nobody was using, so now I've got kind of a permanent trainer bike which is nice. The problem: me and my partner ...
8
votes
2answers
3k views

Benefits and drawbacks of Dropper posts?

From what I've seen, the last couple of years saw a new product type come into light, and since its inception it has started to appear on bikes (such as this one, this one, or this one) as a stock ...
6
votes
4answers
931 views

Which way should a seat post clamp be oriented?

I heard somewhere (I don't remember where) once that a seat post clamp should be oriented with the gap at the front of the seat tube, opposite of the gap in the top of the seat tube. The logic behind ...
1
vote
1answer
87 views

Where can I find a replacement part for a seatpost collar?

I have a foldable bike and I need to constantly adjust the height of my bike seat, the problem is that one of the pieces of the seatpost collar is totally worn out and needs replacement. The part ...
2
votes
1answer
163 views

Seat clamp tolerance

Manufacturer specifies a seat clamp/collar size of 36.6mm. I was wondering if a 36.4mm clamp will work? How much tolerance is there with a seat clamp?
3
votes
3answers
2k views

How can I use a bent seatpost to move my cruiser's seat farther back?

I realize this isn't everyone's taste, but indulge me for a moment... I just bought a beater cruiser bike on craigslist, and I'm trying to move the seat farther towards the rear of the bike for a ...
2
votes
2answers
344 views

Removing old fashioned saddle from seatpost

I've been searching for instructions on how to remove my old saddle from my seatpost. All the videos/guides I've seen have been about the newer kind of clamping mechanism where just one bolt needs to ...
10
votes
2answers
669 views

Is a seat post with an integrated pump a good idea?

I saw this http://www.premiumbikegear.com/biologic/convenience/postpump-seatpost.html and thought it seemed like a cool idea. But if it was really such a great idea, I would have expected to see more ...
3
votes
1answer
2k views

How to calculate bike stand-over height using frameset geometry and wheel radius?

While it's best to buy through fitting a bike in store, it's not always possible (discussed here). On some websites, the stand-over height of a bike may not be listed as part of the specifications. ...
4
votes
2answers
189 views

Seatpost maintenance : removing rust

I have an aluminum seat post in a steel frame. The post was really hard to extract and I don't want this thing corroding on me. You've discussed how to take care of the rust on a steel frame and on ...
3
votes
4answers
2k views

Getting the right cockpit position. Sliding forward. What should I adjust to keep my sit bones on the seat?

I am experienced rider and I'm looking for some advice on how to adjust my cockpit position. I am a daily commuter, and do regular 40-50k rides on the weekends, and with the warmer weather will work ...
4
votes
1answer
425 views

Can i stop my frame scratching my seatpost?

I have an On-One Scandal aluminium frame, into which i have put a carbon seatpost. I have been adjusting it to find the right height, and i have noticed that it is getting seriously scratched - see a ...
2
votes
2answers
535 views

Folding Bike Seat Post Replacement

I have a folding bike (basically this Origin8 model) and the seat/seat post got stolen. I haven't replaced a seat post before, but this is the only replacement post I could find, and I'm not sure ...
1
vote
1answer
173 views

What is the stem/seatpost thing on the Bicymple?

Anybody know if that's a pre-existing part that's been repurposed or if it's something that they've had custom fabricated? There are more pictures on their kickstarter page.
0
votes
2answers
365 views

Extending integrated carbon seat tube

Can I just cut the carbon seat tube, cut a vertical slot for compression and use a conventional seat clamp to hold a seat post in it?
2
votes
2answers
322 views

Joe Breeze HiteRite altenative… ideas before I get hacking!

I think the old HiteRite seat dropper springs are excellent for cost and simplicity, but of course they are like hen's teeth now. I've been looking at torsion spring suppliers and adapting seat ...
7
votes
3answers
819 views

Does anyone make a split seat clamp?

I built an 'Urban Mountain Bike' and I sometimes like to take it off drops. Accordingly, I cut the 'nub' that sticks up above the top tube so that the seat can be removed without a scary open pipe ...
2
votes
2answers
210 views

What Seatpost Is This?

I saw a picture of a seatpost that I'd like to buy but cannot find after much browsing. Unfortunately I no longer have a photo but have this information about it. Can someone identify it? Black. Not ...
6
votes
0answers
618 views

Trading out folding bike seat post

I currently have an older Dahon Mariner with a Telescope seat post. The third wheel that functions as the "third leg" (when the bike is folded) has broken off. To compensate, could I switch out the ...
1
vote
1answer
350 views

Anyone make a 31 or 31.1 mm seatpost?

Some time ago, I bought a used Giant full suspension MTB. The guy cut the original seatpost too short for me, so I needed a new one. The post was some weird size, either 31 or 31.1 mm. Closest I ...
1
vote
3answers
311 views

What is the diameter of the seat post on Citizen folding bikes?

I have searched and cannot find the diameter of the seat post. I would like to get their Miami or Gotham model, but I know I'll need a seat extension as a 6'2" rider. Dahon and others make longer ...
3
votes
2answers
3k views

Aluminum seatpost stuck to a steel frame

I'm trying to free my aluminum seatpost corroded to a CrMo frame. One of the methods is to heat the aluminum seatpost and then to let it cool. In theory, the aluminum will expand twice as fast as ...
0
votes
1answer
949 views

How to avoid or reduce back-pain by adjusting the handlebar and seat of 19.5" MTB?

I'm 6' 3" long, having 45 inches of waist-Toe length. I bought Trek 3500, 19.5" sized frame bicycle two months ago. I've been experimenting with the handlebar and seat positions(Forward n Backward) to ...
4
votes
5answers
1k views

Why did the bike shop put grease on my seatpost?

When I bought a new bike my LBS put grease on the part of the seatpost that inserts into the frame. Why is this? Surely it can't seize?
1
vote
2answers
7k views

How do I install a bike seat clamp properly?

I recently moved, and had to take off the seat to my bike while I moved. I was surprised to find when I arrived and settled that I couldn't find the clamp to my bike seat. I managed to find a new bike ...
3
votes
1answer
322 views

Seatpost of a folding bike is always dirty, filed down by frame?

I fold and unfold my Dahon Speed D7 at least four times a day, and each time its seatpost is being pulled up or pushed down the frame tube. Problem is that the seatpost becomes dirty really quickly ...
4
votes
4answers
742 views

Safe child seat attachment

I was told by my bike shop that the bike I have can only mount a child seat at the seatpost. My son is 2 and I need a safe child seat for him. I have been having great difficulty finding one that ...
3
votes
1answer
754 views

Remote rising seat posts and heavier rider

I am looking at remote adjustable seat posts that I can adjust the height of using a lever on my handle bar. They have a high price tag. Examples are Rock Shox Reverb Seat Post and Crank Brothers ...
5
votes
4answers
4k views

Does seat post suspension reduce efficiency?

I have a hybrid bike with front and seat post suspension. It's easy to see how front suspension reduces pedaling efficiency by using some of the power for compressing the shocks, so I keep it locked ...
9
votes
4answers
16k views

Is it worth getting a suspension seat post as a cheap alternative to full suspension bike?

I'm planning a ride from Birmingham to London on the Grand Union Canal (UK), which will be quite bumpy for most of the 145 mile distance. I have a front suspension bike and can't afford a new full ...
2
votes
1answer
360 views

Seatpost won't let me set my saddle “level”

I recently changed my saddle and I've found I'm unable to get my new saddle level (as measured with spirit level). The problem is the seatpost clamp - it has teeth on both the concave top of the ...
5
votes
5answers
5k views

Problems with a slipping seatpost

I got a Cannondale Quick1 2010, with the seatpost made with aluminium carbon-wrapped. The problem is that the seatpost tends to slide downwards, even if I squeeze a lot the snap ring; if the ground ...
3
votes
2answers
2k views

Tight Seatpost Installation

I'm having a bit of a problem installing my seatpost. I have a 31.6mm carbon-wrapped aluminum seatpost which fit perfectly fine in my previous aluminum frame. Unfortunately, that frame cracked, ...
3
votes
3answers
1k views

Can I use normal grease for a car on the surface of carbon bike?

Helo Guys, I want to know your experience about carbon material and grease Can I use normal grease with carbon ? I want to put grease onto fork and stem.... Or WD-40 or silicone penetrant would be ...
1
vote
2answers
357 views

Carbon seatpost dip in?

Can I insert a carbon seatpost up to 20cm deep into seat tube? The seattube is carbon as well. Total length of the seatpost is 35cm. The shape of the seatpost is aero seatpost (tear drop shape). It's ...