mtb layback seatpost

ellis said:

Any layback seatpost other than Thomson? Love to get a Thomson, but it's
for a backup bike (a size too small, hence longer stem + layback seatpost)
and I don't wan to shell out $80. TIA.

Thomson from eBay?

"ellis" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Any layback seatpost other than Thomson? Love to get a Thomson, but it's
for a backup bike (a size too small, hence longer stem + layback seatpost)
and I don't wan to shell out $80. TIA.

Ellis,

Thomson makes seatposts with no setback (straight post, with saddle head
centered over the post). This is an inherently stronger design, but it
effectively puts the saddle forward of where it will be with most other
seatposts, because the saddle head on most seatposts is offset about one or
two centimeters behind the axis of the seatpost. I use a straight Thomson
"Elite" seatpost on my roadbike and couldn't be happier with the selection,
but the zero-setback design works well for me. Also available from Thomson
are seatposts with setback. http://www.lhthomson.com/gallery.htm

Thomson also makes seatposts where the head is effectively setback from the
axis of the seat tube by putting a 10 degree bend near the top of the post.
This design retains the same mechanical positioning of the head on the post
(centered over the top of the post, rather than offset to the rear). The bent
post -- when all other settings are the same -- effectively sits the rider
rearward about one or two centimeters (16 mm, according to Thomson) just like
most saddles do. Thus, the setback version of the Thomson post provides the
same fit that most seatposts provide. Of course, the rider's fore-aft seating
position can be altered by repositioning the saddle rails in the clamp, but
only the bent Thomson post will allow the saddle to go as far back on the
bike as it can on most other seatposts.

What I'm saying is your Thomson seatpost with so-called "layback" is the same
as other seatposts on the market, in terms of how it will fit the rider to
the bike for a given position of the saddle rails in the seatpost clamp.
Therefore, in your quest to stretch a too-small frame to fit the gap imposed
by your undersized budget, I think the best you can do in the way of seatpost
selection is to just get an ordinary cheap seatpost of sufficient length and
correct diameter.

Because you are already using a post with a head that is setback from the
seatpost axis, all you can do to increase the setback of the saddle at a
given saddle height is to move the saddle as far back in the clamp as
feasible. Be aware, however, that excessive setback of the rider will put the
center of gravity behind the bottom bracket and create a number of comfort
and handling problems.

For any extensive riding, your backup bike may prove unsatisfactory to you
unless you use a frame that fits you. My own backup bike is way too small for
me, but I generally never ride it more than a few miles, greatly preferring
the city bus over a bike that doesn't fit right.

--
Mykal Crooks
Seattle, WA

ellis said:

Any layback seatpost other than Thomson? Love to get a Thomson, but it's
for a backup bike (a size too small, hence longer stem + layback seatpost)
and I don't wan to shell out $80. TIA.

Standard Ritchey (20mm seatback) and *most* of the RaceFace (25.4mm
setback)seatposts have more setback than a Thomson 10° layback (18mm
setback) and are much cheaper. Get the Thomson if you can - great
seatposts. I have them on all my rides.

-n

--

Llatikcuf-at-gmail-dot-com

Eat the meek!

MattB said:

ellis said:

Any layback seatpost other than Thomson? Love to get a Thomson, but it's
for a backup bike (a size too small, hence longer stem + layback
seatpost)
and I don't wan to shell out $80. TIA.

Thomson from eBay?

Seen people take them from ebay for ~$35! Great Deal!

--

Llatikcuf-at-gmail-dot-com

Eat the meek!

(PeteCresswell) said:

Per ellis:

Quoted message said:

Any layback seatpost other than Thomson?

HellBent from Titec gives considerably more setback than Thompson's.

Dunno from cost comparison though...

50mm setback on a HellBent. The retail price is going to be about 90% of a
Thomson.

--
Phil, Squid-in-Training

Per ellis:

Quoted message said:

Any layback seatpost other than Thomson?

HellBent from Titec gives considerably more setback than Thompson's.

Dunno from cost comparison though...
--
PeteCresswell

Per Phil, Squid-in-Training:

Quoted message said:

50mm setback on a HellBent. The retail price is going to be about 90% of a
Thomson.

Also, HellBent's saddle clip seems a lot more user-friendly than Thompson's.
My experience with Thompson's clip is that it's right on the edge of it's
adjustment range limit with certain saddles (like Brooks' B-17).
--
PeteCresswell

Wow. Is the the longest post in history on seatposts? Wheres the
sarcastic 'Getta bike that fits' ? Get with the program man, this sort
of well thought out and informative posting just doesn't cut it here.

Llatikcuf said:

ellis said:

Any layback seatpost other than Thomson? Love to get a Thomson, but it's
for a backup bike (a size too small, hence longer stem + layback seatpost)
and I don't wan to shell out $80. TIA.

Standard Ritchey (20mm seatback) and *most* of the RaceFace (25.4mm
setback)seatposts have more setback than a Thomson 10° layback (18mm
setback) and are much cheaper.

The Salsa Shaft post is cheap, has 23mm setback, and I've found it
to be a good, durable post for the money. Clamp style is good too.
Nice wide (fore and aft) clamping area, which helps reduce the
stress on saddle rails if you wind up using a layback post and
then sliding the saddle back as far as it will go too. I mention
this because I've broken too many WTB saddle rails to mention
using an old-style Synchros post with a little narrow clamp area.
And I like to have my saddle pretty far back.
----
Tom Purvis - http://www.arkansasvalley.net/tpurvis/

"Tom Purvis" <[email hidden]> wrote in message
news:[email hidden]...

Llatikcuf said:

ellis said:

Any layback seatpost other than Thomson? Love to get a Thomson, but
it's
for a backup bike (a size too small, hence longer stem + layback
seatpost)
and I don't wan to shell out $80. TIA.

Standard Ritchey (20mm seatback) and *most* of the RaceFace (25.4mm
setback)seatposts have more setback than a Thomson 10° layback (18mm
setback) and are much cheaper.

The Salsa Shaft post is cheap, has 23mm setback, and I've found it
to be a good, durable post for the money. Clamp style is good too.
Nice wide (fore and aft) clamping area, which helps reduce the
stress on saddle rails if you wind up using a layback post and
then sliding the saddle back as far as it will go too. I mention
this because I've broken too many WTB saddle rails to mention
using an old-style Synchros post with a little narrow clamp area.
And I like to have my saddle pretty far back.
----
Tom Purvis - http://www.arkansasvalley.net/tpurvis/

You should see how poorly a few of them mentioned actually stand up to
stress tests as performed by Thomson at their factory...

Dave

ellis said:

Any layback seatpost other than Thomson? Love to get a Thomson, but it's
for a backup bike (a size too small, hence longer stem + layback seatpost)
and I don't wan to shell out $80. TIA.

See if there's a layback bmx post that will fit; you'll need to use
the clamp from a cheap cruiser seat to mount the saddle, though, and
you might have to use an adapTer bushing. (And with that lashup, I
would expect some other problems to crop up after a while, too.)
--
Typoes are a feature, not a bug.
Some gardening required to reply via email.
Words processed in a facility that contains nuts.