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Discussion Starter · #1 ·
I recently purchased a Ti seatpost from E-bay,but I wanted to see what you guys thought of something I noticed. The support bar doesn't seem to be cut at a straight angle,but I thought maybe this was to give more clearance with an allen tool. I was able to get a saddle mounted but haven't ridden it yet.

My KCNC Ti-Pro Lite also doesn't have this angle. Torontocycles also sells what appears to be the same post and judging by the pics also doesn't have the angle cut. So what do you guys think. If anyone else has this post please chime in. Thanks

Here is the post on E-bay. https://cgi.ebay.com/Only-Ti-UltraL...Cycling_Parts_Accessories?hash=item3efb052948
Really hard to tell by that picture. Here is a picture on Torontocycles website. https://www.torontocycles.com/images/UL_Seatpost_Side.jpg
 

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I bought this post also..and yes both posts are angle cut

mine came in at 212gms for the 31.6x400mm with all the clamps and screws
 

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I am running the lower hole towards the front, so the slant of the post matches the slant of the seatube

I haven't been able to ride it yet, just got it

if you get a ride in, let me know how it holds up
 

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That style can be fine, but does require some special attention.

Saddle- Needs to a be quality unit with Titanium rails (typically) and have a strong ass interface between where the rails meet the saddle portion.

That design applies pressure to an unsupported section of the seat rails, so you have to balance the torque (tightening) values so that you secure the rails but don't go too far, as you will bend the rails downward. I have seen those posts work Ok for lighter riders and with saddles like the Selle Italia Flite with Ti rails back in the 90's

Don't skimp on the saddle!

Low "bolt" goes forward.

Forgot to add- You must apply high pressure grease (like CMD #3) or some Phil's Waterproof or antisieze to all metal/metal contact surfaces, or that post will squeek you into oblivion!

Wood Hardwood Wood stain Wood flooring Plywood


Wood Hardwood Household hardware Wood stain Metal


Wood Hardwood Wood stain Metal Household hardware


Just for laughs, I used to make my own MTB components 15 years ago, this was a seatpost design that also didn't have backing support over the lower carriage (7075-T6 aluminum and titanium) and this this was a squeeker! Man, it was bad, but since I made it, I refused to swap it out, drove me bats for months until I admitted that it was a poor design- looked cool, but that is where it ended.:D
 

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that is sweet, nice work you did there

I agree, everything I put on my bikes gets extra grease or anti-seize

I hate those squeaks

and on this ti post, I agree with everything...not the greatest design but I had another one with this clamp...greased up, light torque and I am using a Avocet O2 Ti railed saddle

this is going on my weight weennie build so there should not be any problems, but I will keep an eye on it every ride anyway

I have an old campy post with almost the same design as yours...I'll see if I can find it and post a pic :)
 

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I bought one of those off of eBay. Much to my regret after I received it. Just didn't trust the clamp/seat rail interface enough to actually use it so I cut off the end & attached a clamp assembly from a seatpost I bought on sale. Admittedly didn't do the best job of fitting but so far no issues with it.

It's the one on the far left in the pic below.

The others are my other attempts at 'custom' ti seatposts. I've used the 2nd from left for over 10 years without issue. It was made from a name brand ti seatpost that had a real hokey clamp. Got the seatpost for cheap so decided what the hey, what do I have to lose? It's my first. The two on the right were made for less than $50 but they're very flexy! Very thin wall ti tubing! And definitely not recommended for hard or heavier riders!

Product Pipe Metal Household hardware Steel
 

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Discussion Starter · #9 ·
I've been using the same clamp/seat rail interface for one season now with my KCNC seatpost and haven't had any problems. Its definitely not the easiest style of post to get set-up that for sure,but the weight weenie inside just can't have a post over 200 grams. :D

I'm around 6'2" 175 lbs (hopefully 165 by summer) no drops over 2 feet,and just a XC racer,so I'm not too concerned about it. Thanks for your help guys,got it mounted and took it on its maiden voyage. Went a whole 1.5miles in -10 degree temps. It was really to cold to be enjoyable.
 

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doco said:
I am running the lower hole towards the front, so the slant of the post matches the slant of the seatube

I haven't been able to ride it yet, just got it

if you get a ride in, let me know how it holds up
so how's the eBay Ti seatpost holding up?
 

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WindWithMe said:
I've been using the same clamp/seat rail interface for one season now with my KCNC seatpost and haven't had any problems. Its definitely not the easiest style of post to get set-up that for sure,but the weight weenie inside just can't have a post over 200 grams. :D

I'm around 6'2" 175 lbs (hopefully 165 by summer) no drops over 2 feet,and just a XC racer,so I'm not too concerned about it. Thanks for your help guys,got it mounted and took it on its maiden voyage. Went a whole 1.5miles in -10 degree temps. It was really to cold to be enjoyable.
has your eBay Ti seatpost survived?
 

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I've been riding on one just like for awhile, several races, many regular rides, no problems. but it does squeak like crazy, same with my ti bars.
 

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Bump
I have heard from Doco but was wondering if the OP had anymore feedback on the Ebay Ti post.
 

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I'm not the OP but I purchased one of these posts earlier in the year and it bent on me in less than a month. I was weighing about 168lbs at the time. I ride a rigid SS so I am not sitting on the seat alot of the time. Don't know if I just got it wrong somewhere and hit a big enough bump or what. The tubing is very thin and they would not warranty the product when it bent. Personally I think you would be better off going with the KCNC Ti Pro lite post. It is made of Scandium and only weighs 150g (for a 27.2 x 350mm post. I believe that is lighter than the ti version you are looking at. KCNC also has a two year warranty on their parts from what I have read that is even extended to the second owner of the product (you know what I mean, if I were to buy it used, I could still warranty something if need be). So far I am happy with the post. I have ridden it 3 times now with no problems and currently weigh 187 lbs.

In either case, this post or the KCNC post, I would not recommend riding a carbon railed seat with them. Both of them have small clamping area that do not support the rails as good as others. The contact points where the mount meets the seat rails is very small and can generate a lot of pressure in a very small area. Some guys have gotten away with it but you must be very light on your bike if you will. I personally have a carbon seat on this post at the moment but that was only to see if I liked the seat. It will be coming off today after I weigh everything.
 

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I would probably get the post that looks like a Thomson knock off - it has a much beefier seat clamp. The seat I would be using is a brooks B-17 or a Brooks Imperial - steel rails. So no worries there.
The main reason I would be buying the post would be to dampen trail chatter, not light weight. I don't care so much about light weight as you can see with my saddle choice.

I have a carbon post but I spent the other day looking at Busted Carbon.com and now I am worried about putting it on my new Vassago BanderSnatch build.
I have a few Friends with Ti handlebars and Ti seat posts but they are super bling multi 100$ items and I just can't spend that kind of dough on a seat post.
 

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Amen to that! (not spending $10000000000)

In any case, my experience was only that the post began to bend. I had no problems what so ever with the clamp when using my normal Aliante seat. That part worked fine and still does. I bought my ti post (ebay special) for about $60 I think to replace the stock EC-30 (POS) that had also bent. Not sure if this is due to them being up fairly high and only being a 27.2 or what. None the less, I was not happy and ended up getting a Ritchey WCS alu for the time being. It works great but is heavy but no real dampening there if you will.

I know they cost more and are out of your price range but it may be worth it to save up and just buy an Erickson or Moots. I think you will be much happier and have a good company to fall back on if you run into any problems with it.

Good luck.
 

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What do you weigh and what kind of bike did you have it on? Do you ride XC or do you ride more aggressively?

I know a few people who have bent posts on full suspension bikes but not as many who have bent them on hard tails.

I am guessing on a full suspension bike you are hitting things harder than a hard tail frame just in the nature of the frame design, and then putting your weight on the post at the bottom of compression. In theory this could add higher stress to the post. As the suspension compresses it *could* increase the angle of your seat tube and thus the seat post is trying to hold up your weight at more of an angle.


*not trying to get into a discussion of which bikes are better full suspension designs and all that mess.
 

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I ride a rigid GT Peace (steel frame) SS. It is a cheap frame but it was a quick way to get me back on the bike. Since then, the only thing original is the frame. I run 2.2 Super Sonic Race King tires at about 31 lbs to give me a little cush. I will ride seated whenever on flat trail but when there are bumps, I am standing. I mean, I know when to sit and stand after years of racing road bikes and what not.

I think it was simply that the material was thin and the post has about 9" showing out of the frame. I really think it was just a leverage sort of thing.
 
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