Go Back  Bike Forums > Bike Forums > Road Cycling
Reload this Page >

How much top tube slope is too much?

Notices
Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

How much top tube slope is too much?

Old 04-04-19, 07:02 PM
  #1  
fuji_owner
Senior Member
Thread Starter
 
Join Date: Mar 2012
Posts: 186

Bikes: 2012 Seven Axiom SL; Surly Cross Check

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 73 Post(s)
Liked 13 Times in 10 Posts
How much top tube slope is too much?

So I've had my custom Seven Axiom SL titanium road bike for a few years now. It's been the best bike I've ridden so far. I've already posted on this forum before about how perfect my Ti bike is.

However, a recurring thought nags me. It's about the aesthetics of the bike. I chose a slightly sloped top tube because I felt the standover height would be too high if the top tube were level. But then I've always felt the slope ended up a little too much on the "ugly" side. The spec sheet says it's estimated to be 5 degrees. Here's a picture.

How much top tube slope do you guys have on your bikes, and what do you think is the acceptable limit beyond which it starts to look uncool?

fuji_owner is offline  
Old 04-04-19, 07:17 PM
  #2  
Dean V
Senior Member
 
Join Date: Oct 2009
Posts: 2,853
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 1067 Post(s)
Likes: 0
Liked 259 Times in 153 Posts
Aesthetically I think the sloping top tube is fine.
A bigger fail is the extended head tube and headset spacers but if that is your fit requirement there isn't much to do about it.
For a new frame I would keep the top tube slope similar but raise it around an 1 1/2".
Dean V is offline  
Old 04-04-19, 07:17 PM
  #3  
datlas 
Should Be More Popular
 
datlas's Avatar
 
Join Date: Dec 2007
Location: Malvern, PA (20 miles West of Philly)
Posts: 43,027

Bikes: 1986 Alpine (steel road bike), 2009 Ti Habenero, 2013 Specialized Roubaix

Mentioned: 560 Post(s)
Tagged: 2 Thread(s)
Quoted: 22571 Post(s)
Liked 8,918 Times in 4,152 Posts

I love a top tube parallel to the ground but it’s just aesthetics. Yours is fine.

Ride more. Worry less.

__________________
Originally Posted by rjones28
Addiction is all about class.
datlas is offline  
Old 04-04-19, 07:18 PM
  #4  
Marcus_Ti
FLIR Kitten to 0.05C
 
Marcus_Ti's Avatar
 
Join Date: Sep 2014
Location: Lincoln, Nebraska
Posts: 5,331

Bikes: Roadie: Seven Axiom Race Ti w/Chorus 11s. CX/Adventure: Carver Gravel Grinder w/ Di2

Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 2349 Post(s)
Liked 406 Times in 254 Posts
Originally Posted by fuji_owner
So I've had my custom Seven Axiom SL titanium road bike for a few years now. It's been the best bike I've ridden so far. I've already posted on this forum before about how perfect my Ti bike is.

However, a recurring thought nags me. It's about the aesthetics of the bike. I chose a slightly sloped top tube because I felt the standover height would be too high if the top tube were level. But then I've always felt the slope ended up a little too much on the "ugly" side. The spec sheet says it's estimated to be 5 degrees. Here's a picture.

How much top tube slope do you guys have on your bikes, and what do you think is the acceptable limit beyond which it starts to look uncool?

Would help if you leveled your camera when taking photos, just saying.
Marcus_Ti is offline  
Old 04-04-19, 07:44 PM
  #5  
fuji_owner
Senior Member
Thread Starter
 
Join Date: Mar 2012
Posts: 186

Bikes: 2012 Seven Axiom SL; Surly Cross Check

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 73 Post(s)
Liked 13 Times in 10 Posts
Originally Posted by Dean V
Aesthetically I think the sloping top tube is fine.
A bigger fail is the extended head tube and headset spacers but if that is your fit requirement there isn't much to do about it.
For a new frame I would keep the top tube slope similar but raise it around an 1 1/2".
Yeah, custom fits are always a compromise between different needs, so it is what it is. Like I said, it's perfect fit for riding. I just don't like the slope top tube on road bikes... makes them look like they're going to morph into a mountain bike.
fuji_owner is offline  
Old 04-04-19, 07:45 PM
  #6  
fuji_owner
Senior Member
Thread Starter
 
Join Date: Mar 2012
Posts: 186

Bikes: 2012 Seven Axiom SL; Surly Cross Check

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 73 Post(s)
Liked 13 Times in 10 Posts
Originally Posted by datlas

I love a top tube parallel to the ground but it’s just aesthetics. Yours is fine.

Ride more. Worry less.

Wow, you must be super tall with really long legs Nice bike though!
fuji_owner is offline  
Old 04-04-19, 07:46 PM
  #7  
fuji_owner
Senior Member
Thread Starter
 
Join Date: Mar 2012
Posts: 186

Bikes: 2012 Seven Axiom SL; Surly Cross Check

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 73 Post(s)
Liked 13 Times in 10 Posts
Originally Posted by Marcus_Ti
Would help if you leveled your camera when taking photos, just saying.
Ha, it's probably just an optical illusion.
fuji_owner is offline  
Old 04-04-19, 07:58 PM
  #8  
Marcus_Ti
FLIR Kitten to 0.05C
 
Marcus_Ti's Avatar
 
Join Date: Sep 2014
Location: Lincoln, Nebraska
Posts: 5,331

Bikes: Roadie: Seven Axiom Race Ti w/Chorus 11s. CX/Adventure: Carver Gravel Grinder w/ Di2

Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 2349 Post(s)
Liked 406 Times in 254 Posts
Originally Posted by fuji_owner
Ha, it's probably just an optical illusion.
(cough) bottom line of the pillar (cough) bottom of the photo.

(Hint: +4 degrees of skew)
Marcus_Ti is offline  
Old 04-04-19, 09:23 PM
  #9  
joe4702
Newbie
 
Join Date: Dec 2008
Location: San Diego, CA
Posts: 42
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
My old Felt Z35 looks like a mountain bike with drop bars and skinny tires. Much more steeply slopped than yours. Doesn't look as good as level but the standover height is nice when commuting.
joe4702 is offline  
Old 04-04-19, 09:35 PM
  #10  
fuji_owner
Senior Member
Thread Starter
 
Join Date: Mar 2012
Posts: 186

Bikes: 2012 Seven Axiom SL; Surly Cross Check

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 73 Post(s)
Liked 13 Times in 10 Posts
Originally Posted by Marcus_Ti
(cough) bottom line of the pillar (cough) bottom of the photo.

(Hint: +4 degrees of skew)
The right end is farther than the left end, so wouldn't it make the slope angle appear less? In any case, I don't think that makes too much difference
fuji_owner is offline  
Old 04-04-19, 09:36 PM
  #11  
fuji_owner
Senior Member
Thread Starter
 
Join Date: Mar 2012
Posts: 186

Bikes: 2012 Seven Axiom SL; Surly Cross Check

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 73 Post(s)
Liked 13 Times in 10 Posts
Originally Posted by joe4702
My old Felt Z35 looks like a mountain bike with drop bars and skinny tires. Much more steeply slopped than yours. Doesn't look as good as level but the standover height is nice when commuting.
Can you post a pic?
fuji_owner is offline  
Old 04-04-19, 09:54 PM
  #12  
Marcus_Ti
FLIR Kitten to 0.05C
 
Marcus_Ti's Avatar
 
Join Date: Sep 2014
Location: Lincoln, Nebraska
Posts: 5,331

Bikes: Roadie: Seven Axiom Race Ti w/Chorus 11s. CX/Adventure: Carver Gravel Grinder w/ Di2

Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 2349 Post(s)
Liked 406 Times in 254 Posts
Originally Posted by fuji_owner
The right end is farther than the left end, so wouldn't it make the slope angle appear less? In any case, I don't think that makes too much difference
Little things make huge differences in composition....and composition is all about making a given thing look good not just to yourself, but to others.

A flat TT is a bit easier to work with when photographing, not better just easier.... Your photo in the OP, playing with it in PS....no matter what you get clashing conflicting lines that are probably what are bothering your eye. Level the column--you get an even more unlevel bike (now that I do it) as well as a very tilted column, level the bike you get an even more skewed horizon and column. Also having the photo taken from above the bike (even slightly) makes the TT sloped more than it really is (a 5 degree slope isn't that much)
Marcus_Ti is offline  
Old 04-04-19, 09:58 PM
  #13  
fuji_owner
Senior Member
Thread Starter
 
Join Date: Mar 2012
Posts: 186

Bikes: 2012 Seven Axiom SL; Surly Cross Check

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 73 Post(s)
Liked 13 Times in 10 Posts
Originally Posted by Marcus_Ti
Little things make huge differences in composition....and composition is all about making a given thing look good not just to yourself, but to others.

A flat TT is a bit easier to work with when photographing, not better just easier.... Your photo in the OP, playing with it in PS....no matter what you get clashing conflicting lines that are probably what are bothering your eye. Level the column--you get an even more unlevel bike (now that I do it) as well as a very tilted column, level the bike you get an even more skewed horizon and column. Also having the photo taken from above the bike (even slightly) makes the TT sloped more than it really is (a 5 degree slope isn't that much)
Hmmm... ok, good points...make sense. Hey, I see you have a Seven with Campy Chorus, same as mine! Can you share a pic?
fuji_owner is offline  
Old 04-05-19, 01:30 AM
  #14  
50PlusCycling
Senior Member
 
50PlusCycling's Avatar
 
Join Date: Mar 2018
Posts: 1,118
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 548 Post(s)
Liked 792 Times in 403 Posts
None. A friend of mine used to be an engineer and Cannonade, and they were quite annoyed at the trend toward bikes with sloping top tubes. The sloping tubes mean longer seat posts, and more seat flex, meaning a longer and thicker seat post was needed, the extra length and thickness actually made their prototype stope tube bikes heavier than their standard top tube design. The sloping top tube phenomena was form over function, which Cannondale disliked, Cannondale were the last to get on the sloping tube band wagon, and their current bikes have as little slope as possible.

Personally, I have never paid any attention at all to standover height, as I seldom stand when I'm out riding. If I stop, I keep my butt on the seat, and put a foot on the curb, or keep both feet clipped in, and put my hand on a sign or traffic light post or poll, if there is no curb or pole, I keep one foot clipped in, put the other on the ground, and keep my butt over the right side of the top tube.
50PlusCycling is offline  
Old 04-05-19, 04:34 AM
  #15  
Marcus_Ti
FLIR Kitten to 0.05C
 
Marcus_Ti's Avatar
 
Join Date: Sep 2014
Location: Lincoln, Nebraska
Posts: 5,331

Bikes: Roadie: Seven Axiom Race Ti w/Chorus 11s. CX/Adventure: Carver Gravel Grinder w/ Di2

Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 2349 Post(s)
Liked 406 Times in 254 Posts
Originally Posted by fuji_owner
Hmmm... ok, good points...make sense. Hey, I see you have a Seven with Campy Chorus, same as mine! Can you share a pic?
Sure, both my Seven and my groading rig have sloping TT, even.


Marcus_Ti is offline  
Old 04-05-19, 04:39 AM
  #16  
nomadmax 
Senior Member
 
Join Date: Jun 2018
Location: SW Ohio
Posts: 2,397
Mentioned: 93 Post(s)
Tagged: 0 Thread(s)
Quoted: 1104 Post(s)
Liked 1,824 Times in 878 Posts
OP if that bike gets you down the road then it's a beautiful bike, sloping top tube or parallel.
nomadmax is offline  
Old 04-05-19, 07:37 AM
  #17  
mstateglfr 
Sunshine
 
mstateglfr's Avatar
 
Join Date: Aug 2014
Location: Des Moines, IA
Posts: 16,604

Bikes: '18 class built steel roadbike, '19 Fairlight Secan, '88 Schwinn Premis , Black Mountain Cycles Monstercross V4, '89 Novara Trionfo

Mentioned: 123 Post(s)
Tagged: 0 Thread(s)
Quoted: 10947 Post(s)
Liked 7,473 Times in 4,181 Posts
All my drop bar bikes(road, touring, gravel) are level top tube. The gravel frame I am going to build late this year will most likely have 6 degree of slope to help reduce the number of spacers. Instead of a 65cm seat tube, i could have a 63cm seat tube and still have the top tube set to where I could remove a 5mm spacer or so.
There is no real need, but its something I want to try and see how it ends.
mstateglfr is offline  
Old 04-05-19, 07:53 AM
  #18  
base2 
I am potato.
 
base2's Avatar
 
Join Date: Jun 2015
Location: Pacific Northwest
Posts: 3,104

Bikes: Only precision built, custom high performance elitist machines of the highest caliber. 🍆

Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Quoted: 1782 Post(s)
Liked 1,621 Times in 927 Posts
Horizontal & vertical skew (crudely) corrected. Leaving the tilt alone. This accentuates the slope right to left...So it could be worse.

BF-Bike by Richard Mozzarella, on Flickr

Here is your bike tilt corrected, then the skew touched up. The top tube slope is minimized.
BF Bike2 by Richard Mozzarella, on Flickr

I guess what I'm saying is it's all in your perspective.

Last edited by base2; 04-05-19 at 08:13 AM.
base2 is offline  
Old 04-05-19, 08:06 AM
  #19  
datlas 
Should Be More Popular
 
datlas's Avatar
 
Join Date: Dec 2007
Location: Malvern, PA (20 miles West of Philly)
Posts: 43,027

Bikes: 1986 Alpine (steel road bike), 2009 Ti Habenero, 2013 Specialized Roubaix

Mentioned: 560 Post(s)
Tagged: 2 Thread(s)
Quoted: 22571 Post(s)
Liked 8,918 Times in 4,152 Posts
Originally Posted by fuji_owner
Wow, you must be super tall with really long legs Nice bike though!
Thanks! I am not super tall but all legs with 38 inch cycling inseam. Hence, custom geometry.
__________________
Originally Posted by rjones28
Addiction is all about class.
datlas is offline  
Old 04-05-19, 08:35 AM
  #20  
Iride01 
I'm good to go!
 
Iride01's Avatar
 
Join Date: Jul 2017
Location: Mississippi
Posts: 14,949

Bikes: Tarmac Disc Comp Di2 - 2020

Mentioned: 51 Post(s)
Tagged: 0 Thread(s)
Quoted: 6177 Post(s)
Liked 4,794 Times in 3,306 Posts
Too much for me would be when I can no longer fit a 24oz bottle on my seat tube.
Iride01 is offline  
Old 04-05-19, 09:45 AM
  #21  
Gconan
Senior Member
 
Join Date: Apr 2018
Posts: 659

Bikes: Norco search xr

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 198 Post(s)
Liked 146 Times in 90 Posts
Sloping top tubes are smart for standover height and they look good. The more the better.
Gconan is offline  
Old 04-05-19, 01:13 PM
  #22  
69chevy
wears long socks
 
Join Date: May 2015
Posts: 1,614
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 503 Post(s)
Liked 19 Times in 11 Posts
Originally Posted by Gconan
Sloping top tubes are smart for standover height and they look good. The more the better.
I couldn't disagree more.

They hurt my eyes and my soul.

Spacer stack, stems pointing up, sloping top tubes, SMP flaccid seats, all make me cringe.

But tastes differ, and mine is mine.
69chevy is offline  
Old 04-05-19, 01:35 PM
  #23  
indyfabz
Senior Member
 
indyfabz's Avatar
 
Join Date: Jan 2010
Posts: 39,214
Mentioned: 211 Post(s)
Tagged: 1 Thread(s)
Quoted: 18397 Post(s)
Liked 15,492 Times in 7,316 Posts
Hard to tell from the angle, but there is some. Just not a lot.

indyfabz is online now  
Old 04-05-19, 01:37 PM
  #24  
indyfabz
Senior Member
 
indyfabz's Avatar
 
Join Date: Jan 2010
Posts: 39,214
Mentioned: 211 Post(s)
Tagged: 1 Thread(s)
Quoted: 18397 Post(s)
Liked 15,492 Times in 7,316 Posts
Originally Posted by datlas
I am not super tall but all legs with 38 inch cycling inseam. Hence, custom geometry.
Did you customize your calves?
indyfabz is online now  
Old 04-05-19, 02:24 PM
  #25  
MoAlpha
• —
 
Join Date: Jun 2015
Location: Land of Pleasant Living
Posts: 12,215

Bikes: Shmikes

Mentioned: 59 Post(s)
Tagged: 0 Thread(s)
Quoted: 10148 Post(s)
Liked 5,841 Times in 3,145 Posts
Originally Posted by indyfabz
Did you customize your calves?
Guy like that would have to. Stock don’t come that long.
MoAlpha is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.