2018 S-Works Tarmac Sizing 49cm Vs 52cm

Discuss light weight issues concerning road bikes & parts.
sychen
Posts: 348
Joined: Thu Apr 24, 2014 1:06 pm

by sychen

Here is the current setup with stem down to the headset cap.

If I was to go lower then it bigger neg stem/flat headset cap is needed.

Drop to handlebars is 70cm.
Don't think my dodgy shoulder can take more in its current state.

I would get toe overlap in any frame around this size.. Not sure if that's avoidable unless you go larger.

Image

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by Weenie


shimmeD
Posts: 443
Joined: Thu Jun 28, 2012 10:52 pm
Location: eNZed

by shimmeD

sychen, your setup looks great :thumbup:
Sorry I shouldn't have stated the obvious, toe overlap is unavoidable in small sizes, and us shorties just have to live with it.
Less is more.

charitv1906
Posts: 2
Joined: Tue Apr 10, 2018 10:14 pm

by charitv1906

Currently I have a tarmac SL5 size 54 and after a bike fit (the one of specialized) I changed the stem from 100mm to 80mm.

I am 1.75 with center of BB to saddle top currently 72.7cm

The truth is that I do not like my bike with such a short stem.....

Although I used to ride 54 size specialized bikes with 100mm stems after a surgery on my lower back (from a crash) I started feeling too stretched.

My question is:

If I move to Sl6 (which has slightly different geometry compared to sl5 ) in order to keep a stem of minimum 100mm which size do I have to choose? 54 again or 52??

Thank you!!

shimmeD
Posts: 443
Joined: Thu Jun 28, 2012 10:52 pm
Location: eNZed

by shimmeD

Without looking at charts/specs and therefore not giving you the answers per se, look at Reach figures. You need the Reach to be 10mm shorter to use a 10mm longer stem.
Less is more.

charitv1906
Posts: 2
Joined: Tue Apr 10, 2018 10:14 pm

by charitv1906

the 52 Sl6 has a 38cm reach vs 38.7 of SL5 54size

The top tube (horizontal) is 53.1 for 52 SL6 vs 54.8 of SL5 54

slowK
Posts: 42
Joined: Wed Apr 23, 2014 5:04 pm

by slowK

Sychen - are you in Sydney? Looks like a Sydney ferry wharf and Gladesville Bridge in the background. Maybe Chiswick wharf at a guess?

sychen
Posts: 348
Joined: Thu Apr 24, 2014 1:06 pm

by sychen

Yes I am,, and yes that is Gladesville bridge and yes that is Chiswick wharf! good eye.

slowK
Posts: 42
Joined: Wed Apr 23, 2014 5:04 pm

by slowK

sychen wrote:
Tue Apr 24, 2018 5:50 am
Yes I am,, and yes that is Gladesville bridge and yes that is Chiswick wharf! good eye.
:thumbup:

LegPower
Posts: 7
Joined: Sun Jun 17, 2018 8:10 pm
Location: San Francisco

by LegPower

I have a 52cm, but should have bought a 54 (I'm 5' 10"). Let me know if you're interested in buying my SL6 Disc!
charitv1906 wrote:
Tue Apr 10, 2018 10:32 pm
Currently I have a tarmac SL5 size 54 and after a bike fit (the one of specialized) I changed the stem from 100mm to 80mm.

I am 1.75 with center of BB to saddle top currently 72.7cm

The truth is that I do not like my bike with such a short stem.....

Although I used to ride 54 size specialized bikes with 100mm stems after a surgery on my lower back (from a crash) I started feeling too stretched.

My question is:

If I move to Sl6 (which has slightly different geometry compared to sl5 ) in order to keep a stem of minimum 100mm which size do I have to choose? 54 again or 52??

Thank you!!

thegeekycyclist
Posts: 2
Joined: Tue Nov 07, 2017 11:44 am
Contact:

by thegeekycyclist

I'm 170cm with a saddle height of 690mm. I'm on a SL5 size 52 with 5mm spacer and 110mm stem.
I'm The Geeky Cyclist where I write about many things cycling.

LegPower
Posts: 7
Joined: Sun Jun 17, 2018 8:10 pm
Location: San Francisco

by LegPower

I'm 178cm with a saddle height of 72cm and have 40mm in spacers and a 120mm stem...

Js2
Posts: 23
Joined: Mon May 08, 2017 6:55 pm

by Js2

5'10 Frame size 54
Saddle to BB - 73.5
Stem Length -10 120mm
Handle Bar has a 80mm reach 130 drop
Saddle to bar drop 10 cm (with the shortest conical spacer provided with the frame)

I have minor toe overlap because my cleats are setup more on the back.

kurte28
Posts: 2
Joined: Fri Aug 17, 2018 8:34 am

by kurte28

Hi,

nice thread. I have a question in this regard.
I don't know which frame fits better to me, 52 or 54.

Here my measurements:
Height: 174cm
Inseam: 79cm
Saddle-BB (Seat-Height): 69cm
Saddletip-Bar (Seat-Length): 53cm
Saddle-Bar (Drop): 6cm
Setback: 5,7cm

what do you think...thx

sychen
Posts: 348
Joined: Thu Apr 24, 2014 1:06 pm

by sychen

Your measurements are similar to mine just 4 cm taller overall and justb2cm longer at Inseam. Drop and saddle height is very similar too.

I ride a 52 with 90mm stem.. I think you can get away with 52 with a longer stem.

That said.. Would depend on how your body fits the current setup. Just because you have this measurement doesn't mean you need to have it identical for the new bike... Just saying
kurte28 wrote:Hi,

nice thread. I have a question in this regard.
I don't know which frame fits better to me, 52 or 54.

Here my measurements:
Height: 174cm
Inseam: 79cm
Saddle-BB (Seat-Height): 69cm
Saddletip-Bar (Seat-Length): 53cm
Saddle-Bar (Drop): 6cm
Setback: 5,7cm

what do you think...thx
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by Weenie


User avatar
taodemon
Posts: 61
Joined: Tue Aug 29, 2017 2:04 pm
Location: Massachusetts

by taodemon

I was on a 56 SL5, and moved to a 56 SL6 without realizing they had slightly altered the geometry. I guess that explains why I felt a little more skrunched and find myself trying to slide back on the seat all the time. How would I solve this, just add a slightly longer stem? Maybe drop a spacer?

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