S-Works Tarmac Stack & Reach
Moderator: robbosmans
Hey guys,
I am hoping for some advice on comparing a few different bikes. Am I right in saying that I should ignore top tube length as when looked at without considering seat tube angle mis dimension can be misleading. To get a more practical idea of what my position will be I should be comparing stack & reach therefore?
The bike I am considering is a 2015 Specialized S-Works Tarmac in either a 56cm or 58cm (note I am 187cm tall, 79kg, 78.3cm bb venter-saddle top), flexible, have put in 7000km so far this year).
Currently I have 2 bikes & happy with fit on both:
Scott CR1SL (2012) 58cm
Stack 603mm (no spacers under stem & could comfortably drop 1-2cm further tomorrow).
Reach 394mm + 110mm stem= 504mm
Canyon Inflite AL (2014) 58cm
Stack 590mm (ride with 25mm of spacers as that is how the bike came set up & it's my winter bike)
Reach 388mm + 120mm stem= 508mm
& now it is between the 2 sizes of Tarmac I need help with:
Specialized S-Works Tarmac (2015) 56cm
Stack 564mm
Reach 395mm + 110mm stem= 505mm
58cm
Stack 591mm
Reach 402 + 100mm stem= 502mm
So, when you look at it I could ride the 58cm with the stem slammed & a 100m stem (is that so short as to muck up the handling)
or
Ride the 56cm but with probably 2cm of spacers under the stem.
Thoughts?
Cheers!!
pete
I am hoping for some advice on comparing a few different bikes. Am I right in saying that I should ignore top tube length as when looked at without considering seat tube angle mis dimension can be misleading. To get a more practical idea of what my position will be I should be comparing stack & reach therefore?
The bike I am considering is a 2015 Specialized S-Works Tarmac in either a 56cm or 58cm (note I am 187cm tall, 79kg, 78.3cm bb venter-saddle top), flexible, have put in 7000km so far this year).
Currently I have 2 bikes & happy with fit on both:
Scott CR1SL (2012) 58cm
Stack 603mm (no spacers under stem & could comfortably drop 1-2cm further tomorrow).
Reach 394mm + 110mm stem= 504mm
Canyon Inflite AL (2014) 58cm
Stack 590mm (ride with 25mm of spacers as that is how the bike came set up & it's my winter bike)
Reach 388mm + 120mm stem= 508mm
& now it is between the 2 sizes of Tarmac I need help with:
Specialized S-Works Tarmac (2015) 56cm
Stack 564mm
Reach 395mm + 110mm stem= 505mm
58cm
Stack 591mm
Reach 402 + 100mm stem= 502mm
So, when you look at it I could ride the 58cm with the stem slammed & a 100m stem (is that so short as to muck up the handling)
or
Ride the 56cm but with probably 2cm of spacers under the stem.
Thoughts?
Cheers!!
pete
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- Posts: 683
- Joined: Wed Apr 11, 2012 3:40 am
Slam the 58. I wouldn't worry about the handling.
100 mm stem won't affect handling.
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- Posts: 85
- Joined: Wed Jun 02, 2010 7:00 am
Rides 7000km so far this year. Wants to ride a bike with a lower bar drop than 180cm Chris Horner who rides a H2 Madone 56cm. 17cm head tube on that bad boy + spacers.
http://www.bikeradar.com/au/gear/articl ... toc-30223/
Get the 58 or 61cm. You will breathe better on the climbs.
http://www.bikeradar.com/au/gear/articl ... toc-30223/
Get the 58 or 61cm. You will breathe better on the climbs.
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Chris Horner, the same guy who rides with a full size pump and saddle bag on training, is not exactly a benchmark for a fit. He is on the top edge of the comfort fit scale. That said, there is a large gap between the 56 and 58 stack on the tarmac. I agree that you will breathe easier with a more open and upright fit, but making it a reach can really numb the handling. Not just because of the stem length, but the overall length, wheelbase, slacker STA, etc. It's like driving a caravan vs. a sports car. I think I'd go with the 58 if I were you and that will leave you some wiggle room up or down.
Btw, durianrider - I get a huge kick out of your videos. Also good job on the strava distance challenges.
Btw, durianrider - I get a huge kick out of your videos. Also good job on the strava distance challenges.
I actually saw a 56cm & knew the minute I clapped eyes on it that it would be too small. It's coming into winter bike season here in Europe so I have some time to deliberate on my decision. After all, that's more than half the fun.
I'll get 10,00km this year. I have 2 kids & a demanding career. Anymore kms & I'm facing a divorce.
Irrespective of my short km I have been riding for less than 2 years & have a FPT of 320w & it keeps on increasing. So I can bring a little heat!
I'll get 10,00km this year. I have 2 kids & a demanding career. Anymore kms & I'm facing a divorce.
Irrespective of my short km I have been riding for less than 2 years & have a FPT of 320w & it keeps on increasing. So I can bring a little heat!
58cm. Without knowing your arm length, 58cm with 120mm stem. You are likely riding too cramped.
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