Go Back  Bike Forums > Bike Forums > Classic & Vintage
Reload this Page >

Bent or Not Bent..?

Notices
Classic & Vintage This forum is to discuss the many aspects of classic and vintage bicycles, including musclebikes, lightweights, middleweights, hi-wheelers, bone-shakers, safety bikes and much more.

Bent or Not Bent..?

Old 11-18-20, 09:48 PM
  #1  
randyjawa 
Senior Member
Thread Starter
 
randyjawa's Avatar
 
Join Date: Apr 2007
Location: Thunder Bay, Ontario, Canada - burrrrr!
Posts: 10,580

Bikes: 1958 Rabeneick 120D, 1968 Legnano Gran Premio, 196? Torpado Professional, 2000 Marinoni Piuma

Mentioned: 182 Post(s)
Tagged: 0 Thread(s)
Quoted: 1020 Post(s)
Likes: 0
Liked 749 Times in 462 Posts
Bent or Not Bent..?

Several handlebars that looked to be bent in have come my way, over the years. The bars seemed to be symmetrical, meaning the ends were bent in an even amount. This most recent set came fitted to a completely, though well used, Torpado...


I should add that the Universal brake levers were broke. And I do mean broke. Broken into several pieces, both sides (that Duct tape is there for a reason!). Never seen such brake lever damage before and, funny thing, hardly any lever rash. Pics might follow.
__________________
"98% of the bikes I buy are projects".
randyjawa is offline  
Old 11-18-20, 10:03 PM
  #2  
Russ Roth
Senior Member
 
Join Date: Dec 2019
Location: South Shore of Long Island
Posts: 1,475

Bikes: 2010 Carrera Volans, 2015 C-Dale Trail 2sl, 2017 Raleigh Rush Hour, 2017 Blue Proseccio, 1992 Giant Perigee, 80s Gitane Rallye Tandem

Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 539 Post(s)
Liked 397 Times in 304 Posts
Measure from the end of the bar to the headtube on each side, its unlikely they would be the same and the bar be bent, if one of closer then the other, they're bent. Can also run a straight edge across the open end and see where it touches the headtube, both sides should hit the mirror opposite location, if one hits further forward or back from the other then also bent.
Russ Roth is offline  
Old 11-18-20, 10:03 PM
  #3  
noobinsf 
Senior Member
 
noobinsf's Avatar
 
Join Date: Sep 2005
Location: Oakland, CA
Posts: 2,361

Bikes: CURRENT: '82 Univega Competizione, '72 Motobecane Grand Record, '74 Campania Professional, '83 Mercian KOM Touring, '91 Univega Alpina Comp PAST: '72 Puch Bergmeister, '72ish Peugeot UO-8, '86 Univega Gran Premio, '85 Univega Viva Touring

Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
Quoted: 741 Post(s)
Liked 499 Times in 336 Posts
I’ve heard that the clamps on Universal levers can be delicate and prone to damage if overtightened. I have no personal experience with them, but it looks like that happened here.
noobinsf is online now  
Old 11-18-20, 10:06 PM
  #4  
3speedslow
Senior Member
 
3speedslow's Avatar
 
Join Date: Oct 2010
Location: Jacksonville, NC
Posts: 8,617

Bikes: A few

Mentioned: 111 Post(s)
Tagged: 0 Thread(s)
Quoted: 1697 Post(s)
Liked 490 Times in 353 Posts
I have a Bergmeister with French bars that look bent but were made that way.


I forget the model name, velobase will tell me. During the resto...
3speedslow is offline  
Old 11-18-20, 10:10 PM
  #5  
3speedslow
Senior Member
 
3speedslow's Avatar
 
Join Date: Oct 2010
Location: Jacksonville, NC
Posts: 8,617

Bikes: A few

Mentioned: 111 Post(s)
Tagged: 0 Thread(s)
Quoted: 1697 Post(s)
Liked 490 Times in 353 Posts
Azureen by Ava.
3speedslow is offline  
Old 11-18-20, 10:56 PM
  #6  
thook
Senior Member
 
Join Date: Aug 2009
Location: Winslow, AR
Posts: 1,608

Bikes: '83 univega gran turismo x2, '85 schwinn super le tour,'89 miyata triple cross, '91 GT tequesta, '90 yokota grizzly peak, '94 GT backwoods, '95'ish scott tampico, '98 bonty privateer, '93 mongoose crossway 625, '98 parkpre ariel, 2k'ish giant fcr3

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 360 Post(s)
Liked 222 Times in 164 Posts
i have had two different sets of cinelli's in the past....one crit' bar and the other a 64 (maybe?). both had that kind of inward bend. never could like them
thook is offline  
Old 11-19-20, 04:34 AM
  #7  
oneclick 
Senior Member
 
Join Date: Feb 2020
Posts: 1,006
Mentioned: 17 Post(s)
Tagged: 0 Thread(s)
Quoted: 349 Post(s)
Likes: 0
Liked 336 Times in 216 Posts
I think they're bent. I had a pair of bars like that that I knew were bent, because I bent them. It happened slowly over a few years; I wasn't big but I liked hills, they were skinny cheap aluminium ones on a cheap french bike, of the same period and price level as this Torpado. How thick are the walls?
oneclick is offline  
Old 11-19-20, 06:18 AM
  #8  
jethin
Senior Member
 
jethin's Avatar
 
Join Date: Oct 2009
Posts: 878
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 187 Post(s)
Liked 91 Times in 52 Posts
Bent. I have some nice bars that Im 95% sure are slightly bent. It drives me crazy that Ill never be 100% sure.
jethin is offline  
Old 11-19-20, 07:34 AM
  #9  
Classtime 
Senior Member
 
Classtime's Avatar
 
Join Date: Jan 2015
Location: Los Angeles
Posts: 2,725

Bikes: 81 Medici, 2011 Richard Sachs, 2011 Milwaukee Road

Mentioned: 29 Post(s)
Tagged: 0 Thread(s)
Quoted: 1023 Post(s)
Liked 412 Times in 289 Posts
Some folks say they start drooping from use. I doubt it. I was concerned about the bars on my rescued PX-10 but eventually convinced my self that they were designed like that.
__________________
I don't do: disks, tubeless, e-shifting, or bead head nymphs.
Classtime is offline  
Old 11-19-20, 07:48 AM
  #10  
SurferRosa
Seor Member
 
SurferRosa's Avatar
 
Join Date: Dec 2018
Location: Pac NW
Posts: 4,005

Bikes: Old school lightweights

Mentioned: 55 Post(s)
Tagged: 0 Thread(s)
Quoted: 1635 Post(s)
Liked 1,669 Times in 948 Posts
My old bars almost never measure perfectly c-c. Like, the 38s are 39s, etc.

As long as they look good and feel right, I'm ok with it. One of 'em, I put in a bench vise to make more right.
SurferRosa is offline  
Old 11-19-20, 08:03 AM
  #11  
Spaghetti Legs 
Senior Member
 
Join Date: Dec 2014
Location: Central Virginia
Posts: 4,104

Bikes: Numerous

Mentioned: 96 Post(s)
Tagged: 0 Thread(s)
Quoted: 1256 Post(s)
Liked 740 Times in 346 Posts
Can’t say for sure but I will say I have a set of Cinelli 64-40’s with one side appearing bent from the end of the center sleeve. I have applied all kinds of torque and beat downs to try bending it back straight and it hasn’t budged. Lesson learned is that, at least for Cinelli, it takes a serious force to bend.
__________________
N = '96 Colnago C40, '04 Wilier Alpe D'Huez, '10 Colnago EPS, '85 Merckx Pro, '89 Merckx Century, '86 Tommasini Professional, '04 Teschner Aero FX Pro, '05 Alan Carbon Cross, '86 De Rosa Professional, '82 Colnago Super, '95 Gios Compact Pro, '95 Carrera Zeus, '84 Basso Gap, 89 Cinelli Supercorsa, 83 Bianchi Specialissima, 85 Pinarello Record, Ritchey Breakaway Steel, '84 Paletti Super Prestige, Heron Randonneur
Spaghetti Legs is offline  
Old 11-19-20, 08:19 AM
  #12  
SurferRosa
Seor Member
 
SurferRosa's Avatar
 
Join Date: Dec 2018
Location: Pac NW
Posts: 4,005

Bikes: Old school lightweights

Mentioned: 55 Post(s)
Tagged: 0 Thread(s)
Quoted: 1635 Post(s)
Liked 1,669 Times in 948 Posts
Originally Posted by Spaghetti Legs View Post
I have applied all kinds of torque and beat downs to try bending it back straight and it hasn’t budged.
Try the stem in a bench vise with cheater bar (like a long piece of wrought iron) in the bar-end. Might want to wrap both in something like a rag.
SurferRosa is offline  
Old 11-19-20, 08:33 AM
  #13  
Wildwood
Veteran, Pacifist
 
Wildwood's Avatar
 
Join Date: Dec 2004
Location: Seattle area
Posts: 10,811

Bikes: Bikes??? Thought this was social media?!?

Mentioned: 243 Post(s)
Tagged: 0 Thread(s)
Quoted: 2699 Post(s)
Liked 1,515 Times in 895 Posts
Handle bars are one of the components where I am careful about re-use of old, old, and well used bars. Bends or grooves (beyond superficial) usually inspire me to render them useless for any future bicycling purpose other than 'vintage wall hanger'. I may have erred on one or two handlebars, but given the downsides of a failure = No Regrets.

Last edited by Wildwood; 11-19-20 at 08:37 AM.
Wildwood is offline  
Old 11-19-20, 09:20 AM
  #14  
BFisher 
Senior Member
 
BFisher's Avatar
 
Join Date: Aug 2013
Posts: 1,525
Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 456 Post(s)
Liked 895 Times in 461 Posts
I'm with Wildwood. Bar failure is catastrophic, and replacement is easy.

The bars in question look bent downward on both sides from the center point out to the first bend.
BFisher is offline  
Old 11-19-20, 10:20 AM
  #15  
Sluggo
Senior Member
 
Sluggo's Avatar
 
Join Date: Oct 2005
Location: Left bank, Knoxville TN
Posts: 562
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 29 Post(s)
Liked 64 Times in 27 Posts
I have experienced handlebar failure that happened soon after a minor shape adjustment, and they were similar bars (Ava or equivalent). I agree with Wildwood and BFisher -- don't try to correct the shape.

I am not certain that these bars are bent, but that looks really uncomfortable to me. And I can imagine scenarios that would bend them symetrically without marking up the brake levers. Say the bike was on a rack on the back of a car, and the driver backs into something. It would take only a touch from a car driver's perspective.
Sluggo is offline  
Old 11-19-20, 01:31 PM
  #16  
randyjawa 
Senior Member
Thread Starter
 
randyjawa's Avatar
 
Join Date: Apr 2007
Location: Thunder Bay, Ontario, Canada - burrrrr!
Posts: 10,580

Bikes: 1958 Rabeneick 120D, 1968 Legnano Gran Premio, 196? Torpado Professional, 2000 Marinoni Piuma

Mentioned: 182 Post(s)
Tagged: 0 Thread(s)
Quoted: 1020 Post(s)
Likes: 0
Liked 749 Times in 462 Posts
This is the third or even fourth set of bars that have showed up looking like this. The others were all on French bikes and all fooled me into thinking that the design was intended. None the less, I will be using the handlebar that came with the Torpado and with no attempt to change the shape. The Universal brake levers - well, that is another story. Toast, to say the least(cracked, broken, corroded and falling apart...


But why are the levers so rash free..?
__________________
"98% of the bikes I buy are projects".
randyjawa is offline  
Old 11-19-20, 02:06 PM
  #17  
79pmooney
A Roadie Forever
 
79pmooney's Avatar
 
Join Date: Oct 2014
Location: Portland, OR
Posts: 9,387

Bikes: (2) ti TiCycles, 2007 w/ triple and 2011 fixed, 1979 Peter Mooney, ~1983 Trek 420 now fixed and ~1973 Raleigh Carlton Competition gravel grinder

Mentioned: 102 Post(s)
Tagged: 0 Thread(s)
Quoted: 2787 Post(s)
Likes: 0
Liked 1,282 Times in 875 Posts
Originally Posted by Wildwood View Post
Handle bars are one of the components where I am careful about re-use of old, old, and well used bars. Bends or grooves (beyond superficial) usually inspire me to render them useless for any future bicycling purpose other than 'vintage wall hanger'. I may have erred on one or two handlebars, but given the downsides of a failure = No Regrets.
My rule of thumb is to replace bars and stems before they break. Since I am not in on the info loop, that means as soon as I have any doubts.
79pmooney is offline  
Likes For 79pmooney:
Old 11-19-20, 02:29 PM
  #18  
SJX426 
Senior Member
 
SJX426's Avatar
 
Join Date: May 2008
Location: Fredericksburg, Va
Posts: 7,710

Bikes: '73 Bottecchia Giro d'Italia, '83 Colnago Superissimo, '84 Trek 610, '84 Trek 760, '88 Pinarello Veneto, '88 De Rosa Pro, '90 De Rosa Professional, '91 Pinarello Montello, '94 Burley Duet, 97 Specialized RockHopper, 2010 Langster, Tern Link D8

Mentioned: 55 Post(s)
Tagged: 0 Thread(s)
Quoted: 971 Post(s)
Liked 608 Times in 386 Posts
Originally Posted by randyjawa View Post
The Universal brake levers - well, that is another story. Toast, to say the least(cracked, broken, corroded and falling apart...

But why are the levers so rash free..?
The PO turned the bike upside down to fix flats!
__________________
Bikes don't stand alone. They are two tired.
SJX426 is offline  
Old 11-19-20, 02:40 PM
  #19  
thook
Senior Member
 
Join Date: Aug 2009
Location: Winslow, AR
Posts: 1,608

Bikes: '83 univega gran turismo x2, '85 schwinn super le tour,'89 miyata triple cross, '91 GT tequesta, '90 yokota grizzly peak, '94 GT backwoods, '95'ish scott tampico, '98 bonty privateer, '93 mongoose crossway 625, '98 parkpre ariel, 2k'ish giant fcr3

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 360 Post(s)
Liked 222 Times in 164 Posts
Originally Posted by SJX426 View Post
The PO turned the bike upside down to fix flats!
and then proceeded to jump on it...lol

maybe it was dropped. or maybe ran into something with it on a roof rack. i've done the latter
thook is offline  
Old 11-19-20, 02:57 PM
  #20  
randyjawa 
Senior Member
Thread Starter
 
randyjawa's Avatar
 
Join Date: Apr 2007
Location: Thunder Bay, Ontario, Canada - burrrrr!
Posts: 10,580

Bikes: 1958 Rabeneick 120D, 1968 Legnano Gran Premio, 196? Torpado Professional, 2000 Marinoni Piuma

Mentioned: 182 Post(s)
Tagged: 0 Thread(s)
Quoted: 1020 Post(s)
Likes: 0
Liked 749 Times in 462 Posts
The PO turned the bike upside down to fix flats!
That was my first thought, also. But look at where the levers are placed on the handlebar. Would the brake adjusters even touch the ground, if the bike were turned upside down? If it is possible that the rider was strong enough to bend the handlebar, then it would be possible for him or her (gotta be fair) to crack up the levers also?

Not sure how others feel, but one would have to be pretty strong just to make use of the drive/transmission (52/47 driving a five cog 14-22). Hard for an old guy like me to push these tight gears...


This is not the first cracked Universal lever to come my way. I am guessing, but at least half a dozen, and probably more, have showed up cracked. This is the first set that came my way with adjuster barrels actually broken completely free. Other levers have sported barrels that were not solid, though. Pretty sure that I have a spare set at the lake cottage. Also got a spare little black hoodie also (I hope).
__________________
"98% of the bikes I buy are projects".
randyjawa is offline  
Old 11-19-20, 02:59 PM
  #21  
non-fixie 
Shifting is fun!
 
non-fixie's Avatar
 
Join Date: Aug 2009
Location: South Holland, NL
Posts: 9,358

Bikes: Yes, please.

Mentioned: 236 Post(s)
Tagged: 0 Thread(s)
Quoted: 1590 Post(s)
Liked 1,248 Times in 666 Posts
Pity about the levers. I like those. They are cheap, fit my hands well and replacement hoods are readily available.

__________________
It was the last one ...
non-fixie is online now  
Old 11-20-20, 05:37 AM
  #22  
Markeologist
Senior Member
 
Join Date: Jun 2020
Location: Marin County, Alta California
Posts: 212

Bikes: Since new: 85/86 Rodriguez Tandem, wife's 87 Gitane Team Pro, 92 Burley Rock-n-Roll, 85 Fisher Comp, 88 Puch Pro, two 92 Bridgestone X0-1s; later: 66/67 Gitane Champion du Monde, late 60s/early 70s B.Carre, my 87 Gitane Team Pro, 77/78 Ritchey Tandem

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 76 Post(s)
Liked 130 Times in 73 Posts
Originally Posted by randyjawa View Post
This is the third or even fourth set of bars that have showed up looking like this. The others were all on French bikes and all fooled me into thinking that the design was intended. None the less, I will be using the handlebar that came with the Torpado and with no attempt to change the shape. The Universal brake levers - well, that is another story. Toast, to say the least(cracked, broken, corroded and falling apart...


But why are the levers so rash free..?
Looks like classic bad casting, metal is just rotting away.
Markeologist is offline  
Old 11-20-20, 05:52 AM
  #23  
T-Mar
Senior Member
 
Join Date: Nov 2004
Posts: 20,894
Mentioned: 562 Post(s)
Tagged: 1 Thread(s)
Quoted: 3767 Post(s)
Likes: 0
Liked 1,180 Times in 877 Posts
They are almost certainly bent. I've never seen handlebars with a bulge formed centre section that wasn't straight. The fact that these start drooping within the span of the bulge, tell me they are bent.
T-Mar is offline  
Old 11-20-20, 06:05 AM
  #24  
Murray Missile 
Bike hoarder.
 
Murray Missile's Avatar
 
Join Date: Jun 2013
Location: 700 Ft. above sea level.
Posts: 2,411

Bikes: Just as many as there were awhile ago.

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 343 Post(s)
Liked 376 Times in 208 Posts
Regarding the brake levers, having worked in Quality Assurance for 42 years I would suspect a "flaw" in the chemistry of the aluminum from the supplier leading to age embrittlement. They probably cheapened the alloy up a bit to save a few Francs not anticipating a bunch of eccentrics like us trying to still use them 5 decades in the future. Or not.
__________________
".....distasteful and easily triggered."
Murray Missile is offline  
Old 11-20-20, 08:02 AM
  #25  
randyjawa 
Senior Member
Thread Starter
 
randyjawa's Avatar
 
Join Date: Apr 2007
Location: Thunder Bay, Ontario, Canada - burrrrr!
Posts: 10,580

Bikes: 1958 Rabeneick 120D, 1968 Legnano Gran Premio, 196? Torpado Professional, 2000 Marinoni Piuma

Mentioned: 182 Post(s)
Tagged: 0 Thread(s)
Quoted: 1020 Post(s)
Likes: 0
Liked 749 Times in 462 Posts
Though I have no proof, I would have to agree with Murry Missle regarding the makeup of the metal. To that add that the design, with the brake adjusting barrel swagged into place on a flat plate all but invites failure. Just a couple more examples of Universal levers in failure mode...

__________________
"98% of the bikes I buy are projects".
randyjawa is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.