What the fork?
#1
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From: Santa Fe, NM
Bikes: Trek tandem, Specialized road bike, Specialized cyclocross, Schwinn Varsity, Schwinn Jaguar, Schwinn Frankenbike Commuter,Fixie of unknown origin
What the fork?
Howdy;
I'm overhauling an old bike. The forks on the bike have a lot of play in them, even though everything is tight. I plan on pulling it apart, cleaning and greasing everything, but before I do, what should I look for? What would cause the forks to be so loose?
Thanks
I'm overhauling an old bike. The forks on the bike have a lot of play in them, even though everything is tight. I plan on pulling it apart, cleaning and greasing everything, but before I do, what should I look for? What would cause the forks to be so loose?
Thanks
#2
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From: New Rochelle, NY
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
Howdy;
I'm overhauling an old bike. The forks on the bike have a lot of play in them, even though everything is tight. I plan on pulling it apart, cleaning and greasing everything, but before I do, what should I look for? What would cause the forks to be so loose?
Thanks
I'm overhauling an old bike. The forks on the bike have a lot of play in them, even though everything is tight. I plan on pulling it apart, cleaning and greasing everything, but before I do, what should I look for? What would cause the forks to be so loose?
Thanks
Seriously, the likeliest cause is a loose headset. Less common, is a sloppy fit on the crown race, or headset cups, both of which need to be tight press fits. Least likely, but not heard of, is a braze failure at the fork crown.
Years ago a friend had a fork that drove him crazy, always feeling a trace of play no matter how he adjusted the headset. This lasted a month or so, until one day he removed the front brake to work on it and the crown and blades fell off the steerer. One more reason to always use a front brake.
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FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“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.
#4
Thread Starter
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Joined: Sep 2011
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From: Santa Fe, NM
Bikes: Trek tandem, Specialized road bike, Specialized cyclocross, Schwinn Varsity, Schwinn Jaguar, Schwinn Frankenbike Commuter,Fixie of unknown origin
Good question. I'll reply tomorrow after I pull it apart. It's a 1958 Schwinn Jaguar that sat out in the weather for years and years. I'm almost scared to take apart the headset.
#5
Hmm, You have a threaded headset, but it worries me you did not know that. You should read up headsets before you pull it apart https://sheldonbrown.com/headsets.html
#7
As mentioned, read up on headsets on Sheldon Brown and the Park websites. The next step is to disassemble and inspect the headset, fork and headtube. Assuming the headtube and fork are in good shape, I would think it highly likely that you will need to replace the headset. That old and having sat outdoors chances are that the headset is corroded. If it was heavily greased in days gone by, there is a chance you could get by with cleaning it up, putting in new bearings and grease, and properly adjusting it. Since the headset is that loose and it was left outdoors, I'm guessing this bike was not that well cared for.
New headsets can be purchased for anywhere from $15-45 at your LBS or online. My suggestion is to get it at the LBS, both to support local business and to assure you get an appropriate headset.
New headsets can be purchased for anywhere from $15-45 at your LBS or online. My suggestion is to get it at the LBS, both to support local business and to assure you get an appropriate headset.
#8
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From: Santa Fe, NM
Bikes: Trek tandem, Specialized road bike, Specialized cyclocross, Schwinn Varsity, Schwinn Jaguar, Schwinn Frankenbike Commuter,Fixie of unknown origin
Hmm, You have a threaded headset, but it worries me you did not know that. You should read up headsets before you pull it apart https://sheldonbrown.com/headsets.html
#9
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From: Santa Fe, NM
Bikes: Trek tandem, Specialized road bike, Specialized cyclocross, Schwinn Varsity, Schwinn Jaguar, Schwinn Frankenbike Commuter,Fixie of unknown origin
#10
It would have been better to tell is this to begun with. We have all made mistakes, but if you are asking for help we need to know all the relevant information; and certainly this was relevant. But keep at it, there is nothing better than finally getting it right!
#11
#12
those things were made from gas pipe gauge steel. sandblast the frame til its shiny on the outside, if you don't see any actual perforated holes, primer and spray it with color of choice, slap parts back on and ride it for another 50 years.
#13
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From: Santa Fe, NM
Bikes: Trek tandem, Specialized road bike, Specialized cyclocross, Schwinn Varsity, Schwinn Jaguar, Schwinn Frankenbike Commuter,Fixie of unknown origin
Old Schwinns are tanks, yes, but they're fun to work on.
Thanks
#14
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From: Santa Fe, NM
Bikes: Trek tandem, Specialized road bike, Specialized cyclocross, Schwinn Varsity, Schwinn Jaguar, Schwinn Frankenbike Commuter,Fixie of unknown origin
I'll get around to that eventually. One of the previous owners spraypainted it red and did a horrible job of it. That's too bad, because the original color was a beautiful blue. And you're right.....It should hold up for another 50 years.
#15
Having worked with galvanized gas pipe I doubt a bike would have tubes that thick. As with cars the worrisome rust works it's way from the inside out toward the painted side.
#16
you ever ride one of those 1950s Schwinn cruisers? 60 lbs, easy. we wrecked many of them rattling down fire roads in teh early 1970s. the frames were nearly indestructable but the solid blade forks, and the wheels, were awful
#17
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From: Santa Fe, NM
Bikes: Trek tandem, Specialized road bike, Specialized cyclocross, Schwinn Varsity, Schwinn Jaguar, Schwinn Frankenbike Commuter,Fixie of unknown origin
BTW....60 pounds is an exaggeration, although not much of one. There's a reason people call these old Schwinns "anchors."
#18
the Schwinn 'inch-pinch' tanker bike with a springer fork that I had circa 1970 was just about 60 lbs with balloon white sidewalls and fenders. after a few crashes on the fire roads of Mt Tam, I stripped off the mangled tank with its silly buzzer-horn, and the fenders, and the bad springer forks were exchanged for a blade fork (that I think came from a Higgins or something), and then it was probably 50 lbs.
what I would have given for a decent front brake on that bike, hahahahaah.
what I would have given for a decent front brake on that bike, hahahahaah.
#19
Thrifty Bill

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If the beautiful blue paint is under the spray paint, I have had good luck removing spray paint with acetone (nail polish remover). Try an inconspicuous area first.
#20
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From: Santa Fe, NM
Bikes: Trek tandem, Specialized road bike, Specialized cyclocross, Schwinn Varsity, Schwinn Jaguar, Schwinn Frankenbike Commuter,Fixie of unknown origin
Thanks. I'll give that a try. Right now I'm waffling between leaving it as it is, or completely stripping it down to the metal and having it professionally repainted. If I can use acetone to get the spray paint off of the factory paint, then all the better. I'll rub some on the bottom bracket and see what happens.
#21
Thread Starter
Senior Member
Joined: Sep 2011
Posts: 184
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From: Santa Fe, NM
Bikes: Trek tandem, Specialized road bike, Specialized cyclocross, Schwinn Varsity, Schwinn Jaguar, Schwinn Frankenbike Commuter,Fixie of unknown origin
the Schwinn 'inch-pinch' tanker bike with a springer fork that I had circa 1970 was just about 60 lbs with balloon white sidewalls and fenders. after a few crashes on the fire roads of Mt Tam, I stripped off the mangled tank with its silly buzzer-horn, and the fenders, and the bad springer forks were exchanged for a blade fork (that I think came from a Higgins or something), and then it was probably 50 lbs.
what I would have given for a decent front brake on that bike, hahahahaah.
what I would have given for a decent front brake on that bike, hahahahaah.







