Seatpost Help

James_Russell

Hey all,
I'm rebuilding my scott scale 50 from the frame up (due to getting hit by a car in january) and its nearly finished. I've refinished the frame and replaced forks, rims, headset and saddle and most other parts have been re-sprayed. Its done 5000 miles now and looks like new, but the cheap ITM carbon/ally seatpost lets it down so I'm after a new one.
I use the bike for road and commuting, so I have fitted Pace RC31s, slick tyres etc so basically the seatpost needs to be light and 300mm+ in length. It also needs around 20mm setback and 31.6mm diameter.
So far I'm considering either the 'Deda Magic stick'
http://www.wiggle.co.uk/ProductDetail.aspx?Cat=cycle&ProdID=5360034662&n=Deda%20Magic%20Stick
or the Easton EA50 Road
http://www.wiggle.co.uk/ProductDetail.aspx?Cat=cycle&ProdID=5360012505&n=Easton%20EA50%20Road%20Seat%20Post
Any advice? I'm thinking about the carbon post because its prettier and lighter but I know easton are class leaders.

Also, one other reason I want a new seatpost is because the old one is full of zig-zag scratches (me lowering the saddle to let a mate have a ride :x bad idea. I know this is normal, but the scratches are quite deep and defined. It looks as though I have a high point inside the seat tube which is leaving these gouges. Is there anything I can do to minimise this on my new seatpost?
To help you advise me, I'm 88kgs (pure fat), 6'1" and the bike is used for very light XC, but mostly endurance rides and commutes.
Thanks in advance for your help,
-James

supersonic

The Easton is heavy for what it is, but solid. As for the gouges, they usuallu come from around the clamping area - check for burrs.

Also consider the SMICA Pro seatpost, and the Easton carbon ones.

James_Russell

Thanks for the reply,
My budget is no more than £60, so the easton carbon posts are out of the question. Has anyone here used the Deda post (i've never heard of deda, but the post looks well spec'd) or the Smica pro (again, never heard of!). Also, are the carbon posts with alloy clamps bonded on generally no good?
It would be foolish to buy a smaller dia. post and use a shim to avoid scratches presumably?
I had my new saddle delivered literally half an hour ago (Selle Italia Signo Gel Flow)and its beautiful like al the other S.I saddles I've used. Ludicrously light by my standards, 30%carbon shell and 230g. Looking forward to seeing how it compares to my old X2 Trans am which was damaged in the accident. I'll be sure to review as I imagine lots of people will look at this saddle! First impressions- good packaging, lovely perforated leather and smooth groove!
-James

dunker

Thomson Elite Layback Seatpost £60
http://www.chainreactioncycles.com/Mode ... delID=8569

7degree layback would be about ??mm setback? dunno, looks a nice post though.

James_Russell

I'd be able to figure out the setback if I know where the 7 degree bend in the post was, but no-where seems to say. Some of the reviews say that the post feels simular to a straight post, which is discourgaing for me. Quality looks great and its only 30g heavier than the two carbon posts!
-James

dunker

bend at 100mm? looks about that to me.

ride_whenever

thomson layback from aspire velotech or merlin, much cheaper. get the really long one.

James_Russell

I'm afraid a seven degree layback (based on a 100mm hyp) would only equate to a 12mm setback, and I think (by the looks of the photo) the hyp could be more like 85mm, which would mean only 10mm. Even the 10 degree layback model is less than 18mm setback.
Looks like the thompson won't do it, so what about the carbon ones? I need to find more stretch in the frame, and the stem is already 120mm so I need a setback post.
-James

James_Russell

Shameless bump

supersonic

It sounds like the frame maybe the wrong size. You may get the position you want eventually, but sounds like it will be compromised, esp with a stem that long.

James_Russell

The stem is the standard stem, and is quite long already. The bike is an XL frame which is to fit anyone up to 6'3" ish (I'm 6'0"), it is my preference to sit quite far back on the bike with the pedals slightly ahead of my saddle. Also means the saddles out of the way when standing in the bike. My new saddle has made me all the more eager to sort this out as, although its very comforable, I feel the widest point of it too far forward, placing all my weight on the base of my pelvis.
-James

supersonic

If you are happy with the size, then cool, though to me I would say anXL is rather large!

This is the SMICA pro:

http://www.ukbikesdepot.com/products.ph ... 1202&rs=gb

Light, cheap and strong, and very well made. No silly bends in the seatpost either!

batch78

Smica and Deda apparently good posts, not used either myself unfortunately! You can always move the saddle further back on its rails to get that kind of spacing. First thing to do though is check for burrs on the inside of your seat tube to prevent more damage, especially if your going to use a carbon post. File if its severe, paper if not.

At 14st your lighter than me! But I'd still consider strength over weight in the seat tube espicially if your running it high out of the frame.

James_Russell

Yes supersonic, I think your right about the SMICA, it looks the part, its cheaper than the (ugly red graphics and heavy IMO) easton and according to the bikeradar review, there is 20mm of setback. And it'll be more robust than the carbon/alloy posts, which is important as I might one day need to clamp a trailer hitch to the post. Thanks for showing me the SMICA as I probably wouldn't have looked at it twice (brand snobbery).
I know the XL seems big, but my old bike was a scott tampico in large which was almost the same geometry, which I rode since I was under 5'4" (14 years of age). I just like a frame with a long top tube stretch! both bikes were fitted as standard with a 120mm stem (which is obvioulsy quite long).
I will buy the post and let you know how it goes.
other than that this thread can R.I.P
Thanks again!
-James
P.S sorry batch78, I was just submitting this post as you were writing yours. Thanks for the advice, I loved the looks of the deda but I think I'll go for the SMICA. I'll use the old post to determine where exactly that burr is, and then file/paper accordingly!

batch78

Sounds good, nothing wrong with a long low riding position I started out very much like that but have slowly had to become more upright as the old back slowly gives up

James_Russell

Oh dear is that what I have to look forward too!? :roll:
-James

batch78

Hope not mate! Think the childrens 'sledging' incident may have played a part but hell I was the don of the slope till inevitable wipe out occured! :oops:

James_Russell

Lol I think kids may be a while away....
that means I'll have to go and get one of those....



...



..Oh, what do you call them..?







....WOMEN!