Bicycle TutorBicycle Tutor

Show off your bike!

Related video tutorials:
Chain snags on rear-wheel

Long story short, I bought a vintage bicycle and am fixing it up.

So far so good, but after adjusting the rear-derailer to take full advantage of the fifth sprocket I find that the chain will get caught on the frame and freeze both the chain and the pedals.

Thankfully, I managed to free it up without destroying anything. I also adjusted the screws on the derailer to prevent shifting past fourth.

Not that I have a problem with an eight-speed road bike, the gears that work do so well enough for me, not to mention the life of my drive-train is greater than a modern store-bought road bike. But I was wondering if anyone has experienced this kind of problem before.

I want to adjust the frame so that I can use my highest gear without problem, but at the same time I am timid about loosening anything holding the rear-axle to the frame.

Any ideas?
The only thing I can think of is are you using just one chain ring in the front for all five gears? Take a look at this and let me know?
Good maintenance to your Bike, can make it like the wheels are, true and smooth!
I'm not quite sure of the problem but I assume the chain snags the "seat stay" ??
If so I would think either the frame isn't true or the sprocket is too near the stay.
Is the tyre in the middle of the chainstays or is the wheel twisted in?
It may require the hub centering, by moving a spacer (washer) over from the left side to the right on the hub axle.
[font=Trebuchet MS]Ride hard or ride home alone![/font]
To clarify, regardless of what chainring I am on, if I shift into the highest sprocket the chain will get stuck on the frame and freeze the pedals.

The bike needs a lot of work before I will be satisfied with it, but re-centering the wheels sounds reasonable enough.

Say, do either of you know if one could adjust a frame to allow for a freewheel with more gears? I was thinking of upgrading to a seven-speed when I replace the chain but right now it is mostly hypothetical...

Thanks again!
Steel frames can be "cold set" to a larger width.
Alloy frames? I don't know about but would be dubious.
Carbon definitely not.

I have had a steel frame set by a professional frame builder which I would recommend if you want to do this.

If your frame is 126mm spacing then you only need to go up to 130mm for 7-10 speed gears.
Most frames will spring the 4mm required without a problem. Just makes it awkward to fit the wheel and you have to watch out for your fingers Sad.
[font=Trebuchet MS]Ride hard or ride home alone![/font]

Possibly Related Threads...
Thread Author Replies Views Last Post
  Chain wheel broke somehow off lapka 2 4,017 09-13-2015, 09:51 PM
Last Post: lapka
  Chain comes off the rear small sprocket on back peddling? elmore leonard 7 6,400 04-06-2015, 07:56 PM
Last Post: elmore leonard
  Rear wheel won't engage billbr 18 53,407 02-16-2014, 08:49 PM
Last Post: nadaleko
  Broken sprocket on rear wheel rbain13 4 7,229 04-03-2013, 04:38 AM
Last Post: DaveM
  Chain wheel and rear sprocket unaligned. Help? CustomStolen 4 5,153 02-11-2013, 09:03 PM
Last Post: 1FJEF
  Newbie: Rear wheel not moving. Only Chain moves. pradpat 11 20,609 10-11-2012, 03:31 PM
Last Post: Bill
  Looking for some general advice on replacing chain, rear cassette tuco 2 6,755 11-24-2011, 07:49 PM
Last Post: nfmisso
  How to remove rear wheel and replace freewheel cassette? Toby83 6 15,607 10-26-2011, 02:59 PM
Last Post: NewtonSquare
  Schwinn S-25 rear wheel Sprockets daredrackereer 8 15,392 07-04-2011, 10:51 PM
Last Post: daredrackereer
  Rear wheel will not roll backwards - at all! (brand new bike) loveletter 18 19,647 01-22-2011, 01:59 AM
Last Post: X-RAY

Forum Jump:

ISSN 1918-3445 © Copyright 2007-2010 Bicycle Tutor / Privacy Policy / Created by Alex Ramon