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Old 02-13-10, 07:05 PM   #1
andrewxcastro
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chain keeps slipping?

i just put my bike back together, 1963 schwinn varsity. i got a new chain for it and everything. the chain was the same size as my old one. now that i have put the shifters back on and adjusted the derailleurs, the chain keeps "slipping". it feels like its popping off and catching again every time i start to pedal real hard/moderate in 10th gear. i dont know what can be causing this. it shifts fine and everything (thanks to all that helped with the last post!).

this chain thing is killing me here though. help!?

andrew
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Old 02-13-10, 07:07 PM   #2
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Did you install a new chain on old worn cogs? That's about the most common cause of chain skip.
It's normal practice to replace the cogs with the chain if there was a lot of wear on the chain.
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Old 02-13-10, 07:07 PM   #3
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..
Steev beat me to it

Last edited by cnnrmccloskey; 02-13-10 at 07:08 PM. Reason: too slow
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Old 02-13-10, 07:08 PM   #4
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ugh! yes i did.


do i have to get new ones? or is there something else i can do?
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Old 02-13-10, 07:13 PM   #5
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Did you install a new chain on old worn cogs? That's about the most common cause of chain skip.
It's normal practice to replace the cogs with the chain if there was a lot of wear on the chain.
oh ok. well when the older chain was on, it wouldnt slip like that. so it slips now due to the new chain vs. old cassette?
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Old 02-13-10, 07:15 PM   #6
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oh ok. well when the older chain was on, it wouldnt slip like that. so it slips now due to the new chain vs. old cassette?
worn freewheel teeth (and chainring teeth) Will also wear your chain faster, and vice versa
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Old 02-13-10, 08:43 PM   #7
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You need a new freewheel. The days of replacing individual cogs is long gone. If you will replace the chain when a foot of chain measures 12 1/16" the cogs will last longer.
Another thought. If you can take the cogs off of the freewheel you may be able to reverse them. It will take two chainwhips to remove the locking cog.
Here's some general onfo. http://draco.acs.uci.edu/rbfaq/FAQ/8d.2.html
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Old 02-13-10, 08:52 PM   #8
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Your freewheel teeth and chain wear together and should be replaced together.
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Old 02-13-10, 09:20 PM   #9
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Your freewheel teeth and chain wear together and should be replaced together.
Well you should replace your chain far more than your freewheel.
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Old 02-13-10, 09:25 PM   #10
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Well you should replace your chain far more than your freewheel.
Depends on the freewheel

5/6 and low end 7 speed is about the same price as a chain, if not less
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Old 02-13-10, 09:26 PM   #11
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Probably slipping because u put all that lube on it.
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Old 02-13-10, 09:26 PM   #12
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Probably slipping because u put all that lube on it.
Uh, no
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Old 02-15-10, 12:53 PM   #13
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Depends on the freewheel

5/6 and low end 7 speed is about the same price as a chain, if not less
so im still new to all this, i can replace the cassette to this, but i just want to make sure i get the right one for my bike. i found this:

http://www.e-bikekit.com/shop/index....424b2d35475243

im not sure if it will work though, it says its for an electric bike. all the ones im finding online are 7 speed cassettes. does anyone know where i can get one for a decent price?
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Old 02-15-10, 12:55 PM   #14
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i rode the bike this weekend, and i noticed it only slips on certain gears... like the ones that would be most used it seems like. i just remembered i have another 5 speed cassette from the original bike. this one was less used i think cause the bike was in storage... anytips for maybe switching them out?

thanks in advance.
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Old 02-15-10, 01:43 PM   #15
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Try walking over to your LBS they probably have a couple sitting around that they'll sell you

It doesn't look like anything is different about that freewheel specific to an "electric Bike"
And if you don't have the right tool have your LBS do it, it can get darn tight on there, speaking of which when you install be sure to grease the threads, past that its a very simple process
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Old 02-15-10, 07:44 PM   #16
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awesome, i might just end up getting a new rather than going back and forth and switching the old for old.
thanks for the help everyone.

man, im loving this site more and more....
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Old 02-16-10, 03:06 AM   #17
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awesome, i might just end up getting a new rather than going back and forth and switching the old for old.
thanks for the help everyone.

man, im loving this site more and more....
Don't worry that will get better, you'll learn to hate us
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Old 02-16-10, 04:11 AM   #18
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Sort of related to this thread, I hope..
.......Yesterday on my Fuji tourer, I had the opposite problem to slippage..... that has not happened in a long time.. The chain kept getting jammed causing me to be unable to peddle .. Each time, I was in the process of shifting.. I had to stop and get off the bike to correct the problem..
. Each time I discovered that the derailleur hanger( guide pulley) was completely extended. How does that happen.?. .. My shifting or does the derailleur need some kind of adjustment...
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Old 02-16-10, 07:01 AM   #19
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i have another 5 speed cassette from the original bike.
That's not a cassette, it's a freewheel.



A freewheel includes the ratchet assembly. When you replace a cassette, you're only switching the cogs.

If you have a squiz at that diagram, and in particular at the extreme crapness of the placement of the right-hand bearing in the freewheel hub, you can see why cassette hubs (except Campagnolo ones) are much better.

In fact, it's prolly a worthy upgrade to find a nice old rear wheel with a 6spd cassette hub and make some Hyperglide cogs fit.
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Old 02-16-10, 01:29 PM   #20
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That's not a cassette, it's a freewheel.



A freewheel includes the ratchet assembly. When you replace a cassette, you're only switching the cogs.

If you have a squiz at that diagram, and in particular at the extreme crapness of the placement of the right-hand bearing in the freewheel hub, you can see why cassette hubs (except Campagnolo ones) are much better.

In fact, it's prolly a worthy upgrade to find a nice old rear wheel with a 6spd cassette hub and make some Hyperglide cogs fit.
----------

oh ok, so if i want to replace just the cogs then, cause thats what sounds like is causing my problem, do i just purchase a new cassette and attach it to the freewheel? i mean i thought it was just that the cogs were worn out and thats why the new chain was slipping on them? please remember im a little of a newbie at the bike mechanics and parts. i appreciate all the help and patience.

ill tryn take pictures of the two rear cassettes i have with the hubs and see if maybe that helps with describing my situation.

also, you said i could get one with a 6 speed cassette on it... i was looking into seeing what i need to do if i got a 6 or 7 speed cassette and "adapt" it to my 5 speed? that might be a whole new thread entirely though...
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Old 02-16-10, 09:22 PM   #21
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You have two freewheels, as I said. Parts aren't interchangeable between freewheel and cassette hubs.

If you want to be able to swap just the cogs, you need a cassette hub. Which would be a good idea.
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Old 02-19-10, 12:24 PM   #22
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You have two freewheels, as I said. Parts aren't interchangeable between freewheel and cassette hubs.

If you want to be able to swap just the cogs, you need a cassette hub. Which would be a good idea.
oh ok, i actually have two cassette hubs, i wouldnt be able to take one off the other and change it?
i have two wheelsets with cassette hubs on them.
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Old 02-19-10, 12:33 PM   #23
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You have freehub wheels on a 1963 Schwinn Varsity? I don't think so. I bet you have 2 gears in front and 5 in back. Am I right?

Between two freehubs you can sometimes exchange sprockets. Not always. Between two freewheels you can sometimes exchange sprockets. Not always.
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Old 02-19-10, 01:16 PM   #24
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oh ok. well when the older chain was on, it wouldnt slip like that. so it slips now due to the new chain vs. old cassette?
Yup. The old chain and cogs had worn toghether so they still meshed properly, even though both were worn out. A new chain on an old cogset won't mesh properly, nor will a new cogset with an old chain.
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Old 02-27-10, 03:51 PM   #25
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oh ok, so im ordering a new cassette freewheel from the internet and will attempt to install it myself.
looks like it might be easy, so far so good with all the repairs ive been doing.

thanks for all the info and help guys!
awesome.
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