Go Back  Bike Forums > Bike Forums > General Cycling Discussion
Reload this Page >

Is this adequate tire clearance?

General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

Is this adequate tire clearance?

Reply

Old 11-23-16, 11:27 PM
  #1  
Soundtallica
Senior Member
Thread Starter
 
Soundtallica's Avatar
 
Join Date: Feb 2011
Posts: 61
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Is this adequate tire clearance?

Would you guys say that my frame has sufficient enough clearance to run this tire? It's close, but I couldn't detect rubbing on my shakedown ride. I'm just worried that hard, high torque efforts like sprints will flex the frame enough to have it rub.

As for my riding style, I like to ride fast and hard at times, and have no reservations taking this cross bike on pretty gnarly terrain.
Attached Images
File Type: jpg
IMG_20161123_220211668.jpg (97.8 KB, 224 views)
Soundtallica is offline  
Reply With Quote
Old 11-24-16, 02:31 AM
  #2  
canklecat
Me duelen las nalgas
 
canklecat's Avatar
 
Join Date: Aug 2015
Location: Texas
Posts: 8,314

Bikes: Univega Via Carisma, Globe Carmel, Centurion Ironman Expert

Mentioned: 139 Post(s)
Tagged: 0 Thread(s)
Quoted: 2511 Post(s)
Are those Continental Speed Rides, or Cyclocross Speed tires? If those are the 700x42 Speed Rides, you can try the Cyclocross Speeds at 700x35 and get a little more room. Same tread pattern. The wider Speed Rides are great tires, I run 'em on my mountain bike for mixed pavement and gravel. I'd like 'em even wider but there's only a 1/4" clearance with the front derailer as it is now.

If those are Clement LAS 700x33, that's probably about as narrow as you can find in that tread style.
canklecat is online now  
Reply With Quote
Old 11-24-16, 06:02 AM
  #3  
OldTryGuy
Senior Member
 
Join Date: Jun 2013
Location: SW Fl.
Posts: 4,204

Bikes: 1981 Custom Touring Paramount, 1983 Road Paramount, 2013 Giant Propel Advanced SL3, 2018 Specialized Red Roubaix Expert mech., 2002 Magna 7sp hybrid, 1976 Bassett Racing 45sp Cruiser

Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 603 Post(s)
No
OldTryGuy is offline  
Reply With Quote
Old 11-24-16, 06:23 AM
  #4  
elcruxio
Senior Member
 
elcruxio's Avatar
 
Join Date: Jul 2011
Location: Turku, Finland, Europe
Posts: 1,797

Bikes: 2011 Specialized crux comp, 2013 Specialized Rockhopper Pro

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 300 Post(s)
Yeah no. That's way inside the flexability of the both the frame and the wheel, not to mention that if you get mud on the tire you'll be looking at a hole in the frame real soon. I usually like 10mm on both sides, but that's just me.
elcruxio is offline  
Reply With Quote
Old 11-24-16, 06:26 AM
  #5  
10 Wheels
Galveston County Texas
 
10 Wheels's Avatar
 
Join Date: Nov 2007
Location: In The Wind
Posts: 30,995

Bikes: 2010 Expedition, 03 GTO

Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 709 Post(s)
Double No
__________________
Fred "The Real Fred"
10 Wheels is offline  
Reply With Quote
Old 11-24-16, 07:15 AM
  #6  
HvPnyrs
Senior Member
 
Join Date: Jan 2011
Location: In The Middle Of "Out There" / Downtown "Lost Angels"
Posts: 259

Bikes: 2001 Trek 520 - Hvy Hauler, Epic Adventure Bike / 2011 Fuji Newest 1.0 - Sporty Quick Bike

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 16 Post(s)
Minimum tire clearance is "FAIL" (worst case: Dangerous)

It is Best to Always have enough clearance between the tires, forks, frame, rim brake mechanism, Chainrings etc. So that bike is still Ridable should you break a Spoke, or two.

... This is of EXTREME IMPORTANCE for bikes taken OFF road. Where even * IF * you have Cell Phone Coverage, your " Call Of Shame " may NOT do you much good. Unless " Homebase " has access to a 4 wheel drive. Or, worst case, a Rescue Helicopter ( if in boondocks single track ).

... Looking at your Picture. YOU Could be facing a long hike (best case), packing your bike out, if You do suffer a 'Popped Spoke' or two.

... Never forget the Outdoors Persons adage. It's good to ' Hope For The Best '. Much better to Always be prepared for " Murphy's Law " to Open Wide It's Fang Lined, Rabies Foam Covered Jaws, to bite you in the ass..
... ... ... cue: Darkening forest scene, ... cue: light drizzle of sleet/snow, ... cue: middle distance Coyote Pack howls, ... Coming closer. .. ... ...Fade to Black




/
HvPnyrs is offline  
Reply With Quote
Old 11-24-16, 08:06 AM
  #7  
bulldog1935
Banned.
 
Join Date: Jul 2016
Location: downtown Bulverde, Texas
Posts: 2,721

Bikes: '74 Raleigh International utility; '98 Moser Forma road; '92 Viner Pro CX upright

Mentioned: 44 Post(s)
Tagged: 0 Thread(s)
Quoted: 939 Post(s)
I'm running about the same on two bikes. 32mm tires on Raleigh International, and 38mm tires on Viner CX frame.
here's a parallel thread on C&V - http://www.bikeforums.net/classic-vi...ce-needed.html

Originally Posted by ThermionicScott View Post
It's really simple: all you need is more than zero clearance. My 650B conversion had a millimeter (or less, with tire variance) to the chainstays and I never had any evidence of tire rub in the first 600 miles. I only dimpled the stays recently because I was bored and wanted to try it.
bulldog1935 is offline  
Reply With Quote
Old 11-24-16, 01:11 PM
  #8  
Wileyrat
Senior Member
 
Join Date: Mar 2013
Location: Tucson Az
Posts: 1,219

Bikes: 2015 Ridley Fenix, 1983 Team Fuji, 1985 Novara Strada, 2013 BD Motobecane 650ht, 90 Trek 850

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 215 Post(s)
Hit a pothole hard enough to knock the wheel out of true and you're going to have a problem.
Wileyrat is offline  
Reply With Quote
Old 11-24-16, 01:15 PM
  #9  
BobbyG
Senior Member
 
BobbyG's Avatar
 
Join Date: Jan 2009
Location: Colorado Springs, CO
Posts: 4,112

Bikes: 2015 Charge Plug, 1997 Nishiki Blazer, 1984 Nishiki International

Mentioned: 31 Post(s)
Tagged: 0 Thread(s)
Quoted: 744 Post(s)
Try it. If it works, it works. I went from 23s to 32s on my '83 Nishiki International, and they occasionally scrape the fork "crotch" and whatever that bridge thing is in the rear between the seat stays. I'm noticing it more and more as the tires get older and possibly more pliable. Twenty-eights next time.
BobbyG is offline  
Reply With Quote
Old 11-24-16, 05:19 PM
  #10  
SkyDog75
Senior Member
 
Join Date: May 2011
Location: Upstate NY
Posts: 3,818

Bikes: Bianchi San Mateo and a few others

Mentioned: 18 Post(s)
Tagged: 0 Thread(s)
Quoted: 632 Post(s)
Too little clearance for my comfort.
SkyDog75 is offline  
Reply With Quote
Old 11-24-16, 06:49 PM
  #11  
Kedosto
Ambulophobic
 
Join Date: Nov 2008
Location: San Leandro, CA
Posts: 913
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 327 Post(s)
Are you prepared to CARRY your bike if/when you have a problem? Because you sure as hell won't be able to roll it. You could let some air out of the tire to get it to rub it's way past the stay, but you won't be able to ride it like that. How comfortable are your riding shoes? You might have to walk a long way.


-Kedosto
Kedosto is offline  
Reply With Quote
Old 11-24-16, 06:56 PM
  #12  
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 36,049

Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

Mentioned: 121 Post(s)
Tagged: 1 Thread(s)
Quoted: 4331 Post(s)
Close only counts in horseshoes. If it clears, there's enough clearance. The only way to know if it will clear in hard cornering is to ride it as hard or harder than you plan to.

Of course, more clearance is helpful in that it gives you added room for error. That can come in handy if you break a spoke, or otherwise have the front wheel go untrue. But that's not something I tend to lose sleep over. (except when planning for long distance, multi-day touring).
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is offline  
Reply With Quote
Old 11-24-16, 08:35 PM
  #13  
drlogik 
Senior Member
 
drlogik's Avatar
 
Join Date: Mar 2016
Location: North Carolina
Posts: 996

Bikes: '87-ish Pinarello Montello; '89 Nishiki Ariel; '85 Raleigh Wyoming, '16 Wabi Special, '16 Wabi Classic, '14 Kona Cinder Cone

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 364 Post(s)
In my opinion no. A small twig or stone could really cause a problem. Hit a bump and get it a little out of true same deal. If you only ran it on the road, maybe....maybe.
drlogik is offline  
Reply With Quote
Old 11-25-16, 01:31 PM
  #14  
rmfnla
Senior Member
 
rmfnla's Avatar
 
Join Date: May 2005
Location: La La Land (We love it!)
Posts: 6,330

Bikes: Gilmour road, Curtlo road; both steel (of course)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 267 Post(s)
Open it up a drop with a rounded rasp...
__________________
Today, I believe my jurisdiction ends here...
rmfnla is offline  
Reply With Quote
Old 11-25-16, 01:38 PM
  #15  
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 36,049

Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

Mentioned: 121 Post(s)
Tagged: 1 Thread(s)
Quoted: 4331 Post(s)
Originally Posted by rmfnla View Post
Open it up a drop with a rounded rasp...
That looks like CF. If so, then filing might be problematic. If not, then filing the sides won't be an option either.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is offline  
Reply With Quote
Old 11-25-16, 01:40 PM
  #16  
rmfnla
Senior Member
 
rmfnla's Avatar
 
Join Date: May 2005
Location: La La Land (We love it!)
Posts: 6,330

Bikes: Gilmour road, Curtlo road; both steel (of course)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 267 Post(s)
Originally Posted by FBinNY View Post
That looks like CF. If so, then filing might be problematic. If not, then filing the sides won't be an option either.
I think it's CF as well but don't think it would hurt down there.

Just touch up the clear coat and you are good to go...
__________________
Today, I believe my jurisdiction ends here...
rmfnla is offline  
Reply With Quote
Old 11-25-16, 01:49 PM
  #17  
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 36,049

Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

Mentioned: 121 Post(s)
Tagged: 1 Thread(s)
Quoted: 4331 Post(s)
Originally Posted by rmfnla View Post
I think it's CF as well but don't think it would hurt down there.

Just touch up the clear coat and you are good to go...
Not having any idea of the thickness there, nor how close to the surface critical structural plies are, I wouldn't advise filing blindly. The benefit gained will be minimal and meaningless unless at least 1mm is removed from each side, and that 1mm may be critical to the bike.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is offline  
Reply With Quote
Old 11-25-16, 04:00 PM
  #18  
Kedosto
Ambulophobic
 
Join Date: Nov 2008
Location: San Leandro, CA
Posts: 913
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 327 Post(s)
If you've ever broken a spoke miles from anywhere you'll get the gist of my earlier post.

Filing the stay for clearance?! Seriously? Riiiiight.


-Kedosto
Kedosto is offline  
Reply With Quote
Old 11-25-16, 06:40 PM
  #19  
canklecat
Me duelen las nalgas
 
canklecat's Avatar
 
Join Date: Aug 2015
Location: Texas
Posts: 8,314

Bikes: Univega Via Carisma, Globe Carmel, Centurion Ironman Expert

Mentioned: 139 Post(s)
Tagged: 0 Thread(s)
Quoted: 2511 Post(s)
If those are the tires I'm thinking of -- Continental Cyclocross Speed or Speed Rides (nearly identical tread, just different widths) -- it might be more practical to file down the side knobbies and leave the frame alone.

Those Contis have a peculiar design. It's mostly a shallow diamond or file pattern tread. It does most of the work on pavement, trails and grass when not making tight turns. Good compromise between grip and smooth rolling.

There's a single row of knobbies along the edges, which come into play only on hard cornering. Unless you're riding cyclocross with tight turns on mostly dry grass you'll probably never miss the knobbies. I've dug into the knobbies once or twice on tight turns on pavement and they feel squirmy.

So if you don't mind taking a rasp to the knobbies you can knock 'em down a bit to provide more clearance.

Or go ride round and round and round in really tight curves on some abrasive terrain for a few hours, first NASCAR style, then the unAmerican direction.


Continental Cyclocross Speed 700x35


Continental Speed Ride
canklecat is online now  
Reply With Quote
Old 11-25-16, 06:49 PM
  #20  
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 36,049

Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

Mentioned: 121 Post(s)
Tagged: 1 Thread(s)
Quoted: 4331 Post(s)
All these suggestions to modify either the frame or tire, are (IMO) too much work for not enough benefit.

I think this is a case where the OP needs to decide for himself whether he can live with this or not. If not, the right solution is a tire that's narrow enough to give him the clearance he believes he needs.

If all else fails, then the best answer is a frame with enough room to give the OP the clearance he wants with the tires he prefers.

So in the words of the canal boatmen, either raise the bridge or lower the water.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service