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

1981 & 1982 Trek 610/613/614 Ishiwata Forks

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.
View Poll Results: 1981 & 1982 Trek 610/613/614 Ishiwata Forks
1. Own one of these models and the fork has no issues
87.50%
2. Own one of these models and the fork cracked
12.50%
Voters: 16. You may not vote on this poll

1981 & 1982 Trek 610/613/614 Ishiwata Forks

Old 12-31-15, 10:47 AM
  #1  
Bruce27
Senior Member
Thread Starter
 
Bruce27's Avatar
 
Join Date: Aug 2013
Location: NJ
Posts: 350
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 25 Post(s)
Liked 85 Times in 28 Posts
1981 & 1982 Trek 610/613/614 Ishiwata Forks

I own a 1982 Trek 613 and just purchased a 1981 614. Didn't know this until recently but it's been mentioned that the Ishiwata CCL fork crown had some issues with breakage (I have not had any issues with my 1982) so, before I go off increasing my life insurance, I figured I'd get input and have the owners of these bikes weigh-in on their own experience with this fork.

So if you've rode your bike hard and believe it has in excess of 1,000 miles, are you a #1 or #2 ?

1. Own one of these models and the fork has no issues
2. Own one of these models and the fork cracked

Too soon to comment on my 1981 but, #1 for me on my 1982.

Anyone else?

Last edited by Bruce27; 12-31-15 at 11:03 AM.
Bruce27 is offline  
Old 12-31-15, 11:37 AM
  #2  
fender1
Senior Member
 
fender1's Avatar
 
Join Date: Jan 2006
Location: Berwyn PA
Posts: 6,181

Bikes: I hate bikes!

Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 330 Post(s)
Liked 285 Times in 93 Posts
How is a 30+ year old bike part considered to "failing" when it has done its job for 30+ years?
fender1 is offline  
Old 12-31-15, 11:53 AM
  #3  
jeirvine 
Senior Member
 
jeirvine's Avatar
 
Join Date: Sep 2011
Location: Bethesda/Baltimore MD
Posts: 3,801

Bikes: '72 Moto Grand Record, '72 Gitane tandem, '72 Raleigh Super Course, '73 Raleigh Gran Sport, '73 and '76 Colnagos Super, '76 Fiorelli Coppi, '78 Raleigh SBDU Team Pro, '78 Trek 930, '81 Holdsworth Special 650B, '86 Masi GC, '87 Panasonic DX5000

Mentioned: 60 Post(s)
Tagged: 0 Thread(s)
Quoted: 706 Post(s)
Liked 347 Times in 198 Posts
I have a 1980 414 with the same crown and no issues. I Voted.
__________________
The man who dies with the most toys…is dead. - Rootboy
jeirvine is offline  
Old 12-31-15, 12:21 PM
  #4  
jonwvara 
Senior Member
 
jonwvara's Avatar
 
Join Date: Apr 2006
Location: Washington County, Vermont, USA
Posts: 3,563

Bikes: 1966 Dawes Double Blue, 1976 Raleigh Gran Sport, 1975 Raleigh Sprite 27, 1980 Univega Viva Sport, 1971 Gitane Tour de France, 1984 Lotus Classique, 1976 Motobecane Grand Record

Mentioned: 70 Post(s)
Tagged: 0 Thread(s)
Quoted: 627 Post(s)
Liked 417 Times in 226 Posts
Originally Posted by fender1 View Post
How is a 30+ year old bike part considered to "failing" when it has done its job for 30+ years?
Because forks aren't supposed to break?
__________________
www.redclovercomponents.com

"Progress might have been all right once, but it has gone on too long."
--Ogden Nash
jonwvara is offline  
Old 12-31-15, 01:42 PM
  #5  
fender1
Senior Member
 
fender1's Avatar
 
Join Date: Jan 2006
Location: Berwyn PA
Posts: 6,181

Bikes: I hate bikes!

Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 330 Post(s)
Liked 285 Times in 93 Posts
Originally Posted by jonwvara View Post
Because forks aren't supposed to break?
Neither are knees, arms, hips and backs. Yet, as these "parts" get older and their use history comes into play, the can and often times do fail.
fender1 is offline  
Old 12-31-15, 02:48 PM
  #6  
elboGreaze
carpe diem
 
elboGreaze's Avatar
 
Join Date: Jan 2009
Location: Fenton, MI
Posts: 681

Bikes: CAAD 9 , Schwinn World, Prologue, Madison , Sports Tourer ; Ironman , Opus lll , Allez , Peugeot 753, Trek 531 (2) , Assenmacher ( custom)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
Liked 0 Times in 0 Posts
I have not put more than 50 miles on my '81 , during 5 yrs of ownership , but voted anyway . Had it for sale , then pulled it when this issue came up recently . I'm still going to sell it , but will either take it to the frame shop and have it modified , or get a new fork .
elboGreaze is offline  
Old 12-31-15, 03:06 PM
  #7  
Bruce27
Senior Member
Thread Starter
 
Bruce27's Avatar
 
Join Date: Aug 2013
Location: NJ
Posts: 350
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 25 Post(s)
Liked 85 Times in 28 Posts
I did this poll in the hopes of trying to find out how big an issue it really is.
Bruce27 is offline  
Old 12-31-15, 03:21 PM
  #8  
Pemetic2006
Senior Member
 
Join Date: Apr 2015
Posts: 1,117
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 377 Post(s)
Likes: 0
Liked 13 Times in 9 Posts
I have an 82 614 and I haven't ridden it much but someone appears to have for 33 years and it's fine.
Pemetic2006 is offline  
Old 12-31-15, 03:36 PM
  #9  
jonwvara 
Senior Member
 
jonwvara's Avatar
 
Join Date: Apr 2006
Location: Washington County, Vermont, USA
Posts: 3,563

Bikes: 1966 Dawes Double Blue, 1976 Raleigh Gran Sport, 1975 Raleigh Sprite 27, 1980 Univega Viva Sport, 1971 Gitane Tour de France, 1984 Lotus Classique, 1976 Motobecane Grand Record

Mentioned: 70 Post(s)
Tagged: 0 Thread(s)
Quoted: 627 Post(s)
Liked 417 Times in 226 Posts
Originally Posted by fender1 View Post
Neither are knees, arms, hips and backs. Yet, as these "parts" get older and their use history comes into play, the can and often times do fail.
Yes, things made of meat do seem to deteriorate over time. It's certainly happening to me. Steel, not so much, or so one would hope. All of my bikes are well over thirty years old. Maybe I'm living in a dream world in expecting the forks not to break.

Okay, I don't want to muddy the waters of this thread any more, so will shut up now.
__________________
www.redclovercomponents.com

"Progress might have been all right once, but it has gone on too long."
--Ogden Nash
jonwvara is offline  
Old 12-31-15, 04:06 PM
  #10  
Bruce27
Senior Member
Thread Starter
 
Bruce27's Avatar
 
Join Date: Aug 2013
Location: NJ
Posts: 350
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 25 Post(s)
Liked 85 Times in 28 Posts
It's all good jonwvara. I'm also of the opinion that steel should not crack under normal riding conditions. Granted, hitting deep pot holes does not add to bike longevity so this poll is not about extreme circumstances. I'm not going to fault a part because it didn't pass the sledge test.
Just looking to get a good consensus via the pole numbers from members who have experience riding with this fork.
Bruce27 is offline  
Old 12-31-15, 04:55 PM
  #11  
smallpox champ
Senior Member
 
smallpox champ's Avatar
 
Join Date: Apr 2009
Posts: 157

Bikes: '84 specialized expedition, '87 specialized sirrus, '84 specialized stumpjumper sport

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 32 Post(s)
Liked 56 Times in 13 Posts
I bought a 1982 311 a couple years back. It has the same CCL crown. The fork broke in short order. I noticed the bike felt off and it pulled to one side. After measuring the dropouts I found out it was the fork. I wouldn't hesitate to ride forks with the same crown, unless you ignore all the warning signs it's unlikely it will fail catastrophically.

My father bought an '81 400 with the same crown, it's served him well, but he doesn't ride it hard.

It's also worth mentioning that commonly available replacement 27" forks have an identical looking fork crown.
smallpox champ is offline  
Old 01-01-16, 04:49 PM
  #12  
Road Fan
Senior Member
 
Road Fan's Avatar
 
Join Date: Apr 2005
Location: Ann Arbor, MI
Posts: 16,071

Bikes: 1980 Masi, 1984 Mondonico, 1984 Trek 610, 1980 Woodrup Giro, 2005 Mondonico Futura Leggera ELOS, 1967 PX10E, 1971 Peugeot UO-8

Mentioned: 43 Post(s)
Tagged: 0 Thread(s)
Quoted: 1517 Post(s)
Liked 424 Times in 325 Posts
@fender1: In the parlance of modern reliability engineering, if it breaks or ceases to function, a failure has occurred. What caused it (such as long-term fatigue due to a systematic design error) or if it is unusual is step 2 of the analysis.
Road Fan is offline  
Old 01-01-16, 04:57 PM
  #13  
Road Fan
Senior Member
 
Road Fan's Avatar
 
Join Date: Apr 2005
Location: Ann Arbor, MI
Posts: 16,071

Bikes: 1980 Masi, 1984 Mondonico, 1984 Trek 610, 1980 Woodrup Giro, 2005 Mondonico Futura Leggera ELOS, 1967 PX10E, 1971 Peugeot UO-8

Mentioned: 43 Post(s)
Tagged: 0 Thread(s)
Quoted: 1517 Post(s)
Liked 424 Times in 325 Posts
1981 & 1982 Trek 610/613/614 Ishiwata Forks

I think if the bike was potholed or jumped hundreds of times and the fork was repeatedly stressed past its elastic limits, degradation and failure are normal. Moral of the story: don't jump your road bike. The break will happen sooner if the engineering contained an error caused by Trek, or if the material in the crown was deficient. Over-stress, design errors, or flawed materials.
Road Fan is offline  
Old 01-02-16, 07:26 AM
  #14  
jgcycle
Senior Member
 
Join Date: Sep 2012
Location: Ohio
Posts: 122
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Likes: 0
Liked 1 Time in 1 Post
My Trek 614 has a 1979 serial number, I bought it off CL and the Ishiwata fork was cracked bad. Both rims had flat spots so I figured it went through a nasty pothole. I can't get the bike to index shift reliably so I wonder if something else is misaligned. I friction shift with a Crane RD. Love this bike! (I voted).
jgcycle is offline  
Old 01-02-16, 07:49 AM
  #15  
katzenfinch 
Senior Member
 
katzenfinch's Avatar
 
Join Date: Apr 2010
Location: Zionsville, Indiana
Posts: 209

Bikes: Chapman Rando, Rivendell Atlantis, Trek 2100, Bridgestone MB5, Burley Duet, Trek 614

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 35 Post(s)
Liked 13 Times in 8 Posts
I no longer own my 1981 614 so I didn’t vote, but when I had it my fork did indeed fail — one of the blades broke off. Fortunately, it happened while the bike was in a workstand being tuned for an upcoming tour. For the short term I replaced it with chrome, non-crowned fork but didn’t like the way it looked. Eventually I bought another Trek frame on eBay and used the fork from it. To their credit, Trek paid for the new fork and also repaired and repainted the whole bike when a crack later appeared in one of the dropouts.
katzenfinch is offline  
Old 01-02-16, 08:32 AM
  #16  
jeirvine 
Senior Member
 
jeirvine's Avatar
 
Join Date: Sep 2011
Location: Bethesda/Baltimore MD
Posts: 3,801

Bikes: '72 Moto Grand Record, '72 Gitane tandem, '72 Raleigh Super Course, '73 Raleigh Gran Sport, '73 and '76 Colnagos Super, '76 Fiorelli Coppi, '78 Raleigh SBDU Team Pro, '78 Trek 930, '81 Holdsworth Special 650B, '86 Masi GC, '87 Panasonic DX5000

Mentioned: 60 Post(s)
Tagged: 0 Thread(s)
Quoted: 706 Post(s)
Liked 347 Times in 198 Posts
Originally Posted by katzenfinch View Post
To their credit, Trek paid for the new fork and also repaired and repainted the whole bike when a crack later appeared in one of the dropouts.
That's an interesting bit of information. How long ago did Trek do that?
__________________
The man who dies with the most toys…is dead. - Rootboy
jeirvine is offline  
Old 01-02-16, 11:15 AM
  #17  
Rodasch
Newbie
 
Join Date: Nov 2012
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I have an '81 613 with the fork crown in question. I've ridden it 3,000+ miles over the past couple of years, several hundred of those on gravel and other rough surfaces, and often with 5-20 pounds in front panniers. No problems so far. Once in a while I consider replacing the fork, but I haven't researched the options.
Rodasch is offline  
Old 01-02-16, 12:41 PM
  #18  
VictorKnox
Senior Member
 
VictorKnox's Avatar
 
Join Date: Jan 2009
Location: Milwaukee, WI
Posts: 87

Bikes: Rivendell Appaloosa, Rivendell Sam Hillborne, Surly Pugsley, Surly Big Dummy

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Likes: 0
Liked 1 Time in 1 Post
I've been meaning to post some questions about this issue for a while. I have an '81 614 and have read all the threads about these forks. In one of them it was mentioned that not all of these bikes had issues, it was only a subset of them. Is there a way to tell if yours is part of the bad batch? One particular issue I am wondering about is this: My fork, pictured below, has TREK stamped in the crown, but the pictures I've seen of broken forks do not have this. Could this mean mine won't have this issue, or is this irrelevant? Has anyone with a broken fork had the Trek logo stamped in theirs?

I just bought mine this past fall and only got about 600 miles on it before storing it for the winter. No issues so far, and I plan to use it as my main road ride this summer.





VictorKnox is offline  
Old 01-02-16, 12:49 PM
  #19  
bakes1
Banned
 
Join Date: May 2015
Location: North Jersey
Posts: 1,245

Bikes: 1975 Motobecane Le Champion lilac, 2015 Specialized Secteur Elite

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 97 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Originally Posted by jonwvara View Post
Because forks aren't supposed to break?
Nothing is supposed to break and anything can break.
What's your point?
bakes1 is offline  
Old 01-02-16, 01:12 PM
  #20  
jonwvara 
Senior Member
 
jonwvara's Avatar
 
Join Date: Apr 2006
Location: Washington County, Vermont, USA
Posts: 3,563

Bikes: 1966 Dawes Double Blue, 1976 Raleigh Gran Sport, 1975 Raleigh Sprite 27, 1980 Univega Viva Sport, 1971 Gitane Tour de France, 1984 Lotus Classique, 1976 Motobecane Grand Record

Mentioned: 70 Post(s)
Tagged: 0 Thread(s)
Quoted: 627 Post(s)
Liked 417 Times in 226 Posts
Originally Posted by bakes1 View Post
Nothing is supposed to break and anything can break.
What's your point?
That a properly engineered fork should not break. If it does break, it can be said to have failed.
__________________
www.redclovercomponents.com

"Progress might have been all right once, but it has gone on too long."
--Ogden Nash
jonwvara is offline  
Old 01-02-16, 01:25 PM
  #21  
smallpox champ
Senior Member
 
smallpox champ's Avatar
 
Join Date: Apr 2009
Posts: 157

Bikes: '84 specialized expedition, '87 specialized sirrus, '84 specialized stumpjumper sport

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 32 Post(s)
Liked 56 Times in 13 Posts
Originally Posted by VictorKnox View Post
I've been meaning to post some questions about this issue for a while. I have an '81 614 and have read all the threads about these forks. In one of them it was mentioned that not all of these bikes had issues, it was only a subset of them. Is there a way to tell if yours is part of the bad batch? One particular issue I am wondering about is this: My fork, pictured below, has TREK stamped in the crown, but the pictures I've seen of broken forks do not have this. Could this mean mine won't have this issue, or is this irrelevant? Has anyone with a broken fork had the Trek logo stamped in theirs?

I just bought mine this past fall and only got about 600 miles on it before storing it for the winter. No issues so far, and I plan to use it as my main road ride this summer.
As far as I'm aware the stamped crown was used for the '82 Trek 311, and is the same crown.
smallpox champ is offline  
Old 01-02-16, 02:39 PM
  #22  
elboGreaze
carpe diem
 
elboGreaze's Avatar
 
Join Date: Jan 2009
Location: Fenton, MI
Posts: 681

Bikes: CAAD 9 , Schwinn World, Prologue, Madison , Sports Tourer ; Ironman , Opus lll , Allez , Peugeot 753, Trek 531 (2) , Assenmacher ( custom)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
Liked 0 Times in 0 Posts
Originally Posted by smallpox champ View Post
As far as I'm aware the stamped crown was used for the '82 Trek 311, and is the same crown.
So to be clear, your 311 fork that cracked had the Trek logo stamped on the crown ? I'm asking because mine has the stamp , thanks !
elboGreaze is offline  
Old 01-02-16, 02:59 PM
  #23  
Pemetic2006
Senior Member
 
Join Date: Apr 2015
Posts: 1,117
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 377 Post(s)
Likes: 0
Liked 13 Times in 9 Posts
My 82 614 does not have "TREK" stamped on the fork crown.
Neither does my 79 910.
Pemetic2006 is offline  
Old 01-02-16, 03:32 PM
  #24  
Lascauxcaveman 
Senior Member
 
Lascauxcaveman's Avatar
 
Join Date: Nov 2011
Location: Port Angeles, WA
Posts: 7,909

Bikes: A green one, "Ragleigh," or something.

Mentioned: 189 Post(s)
Tagged: 0 Thread(s)
Quoted: 1586 Post(s)
Liked 503 Times in 294 Posts
Originally Posted by bakes1 View Post
Nothing is supposed to break and anything can break.
What's your point?
The way I look at this issue is: there are only two* really well known fork designs that have a reputation for breaking without being abused, the cast aluminum Lambert fork from the early 70s and the Trek fork that's the subject of this thread. I think the OP's poll is a good effort to try to quantify how much that reputation is deserved in the case of the Trek. I also think it's silly to say "Well, of course it broke, it's old" since there are so many hundreds of fork designs over the last 120 years which have held up to everything except really bad crashes, other serious abuse and extreme rust.

(*and yes of course there are many dozens/hundreds of truly rotten forks on cheap bikes that would be prone to failure if people actually rode them, but none from companies with the high quality standards that Trek had BITD, none from companies who designed their bikes to be raced, toured or really go a lot of miles.)
__________________
● 1971 Grandis SL ● 1972 Lambert Grand Prix frankenbike ● 1972 Raleigh Super Course fixie ● 1973 Nishiki Semi-Pro ● 1980 Apollo "Legnano" ● 1984 Peugeot Vagabond ● 1985 Shogun Prairie Breaker ● 1986 Merckx Super Corsa ● 1987 Schwinn Tempo ● 1988 Schwinn Voyageur ● 1989 Trek 400 ● 1989 Bottechia Team ADR replica ● 1990 Cannondale ST600 ● 1993 Technium RT600 ● 1996 Kona Lava Dome ●

Last edited by Lascauxcaveman; 01-02-16 at 05:11 PM.
Lascauxcaveman is offline  
Old 01-03-16, 10:26 AM
  #25  
katzenfinch 
Senior Member
 
katzenfinch's Avatar
 
Join Date: Apr 2010
Location: Zionsville, Indiana
Posts: 209

Bikes: Chapman Rando, Rivendell Atlantis, Trek 2100, Bridgestone MB5, Burley Duet, Trek 614

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 35 Post(s)
Liked 13 Times in 8 Posts
Originally Posted by jeirvine View Post
That's an interesting bit of information. How long ago did Trek do that?
It was in the 1990s. Trek guaranteed their frames for life, as long as you were the original owner. I believe they still do.
katzenfinch 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.