Sprint derailleur help needed


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Jay81

Cruisin' on my Bluebird
Apr 26, 2015
2,280
3,046
Roseville MI
#1
Been tinkering with this 66 Collegiate I picked up the other day. Trying to get it dialed in so it shifts properly and now it won't shift out of first gear. The cable moves as it should. Wondering if this spring is broken? See where I'm pointing with the screwdriver, the spring hooks onto that little tab that sticks out. There another tab facing the other way, that looks like it should have the other end of the spring hooked onto it.

20180708_170424.jpg


20180708_170524.jpg


20180704_155412.jpg
 

GTs58

Riding a '38 Autocycle Deluxe
Sep 2, 2012
7,883
5,271
Central Arizona
#2
Most common error is letting the jockey wheel cage rotate when removing the wheel or chain. No tension on the spring then. This has to be done when reinstalling the wheel. Looking at the bike picture this is what I'm seeing.

The derailleur should be positioned like this.

62 Continental 009.JPG
 

Jay81

Cruisin' on my Bluebird
Apr 26, 2015
2,280
3,046
Roseville MI
#3
Most common error is letting the jockey wheel cage rotate when removing the wheel or chain. No tension on the spring then. This has to be done when reinstalling the wheel. Looking at the bike picture this is what I'm seeing.

The derailleur should be positioned like this.

View attachment 836109
Thank you, I'll try repositioning it. May have gotten moved out of place when I removed and reinstalled the wheel because it was shifting before that.
 

vincev

I'm the Wiz, and nobody beats me!
Nov 2, 2008
11,145
6,574
crown point<indiana
#4
GT is correct.I dont see any tension on the spring. Cage is horizontal and should be vertical.
 
Likes: Jay81

Metacortex

Wore out three sets of tires already!
Sep 22, 2012
830
453
The Matrix
#5
How long is your chain? I ask because the chain appears to be far too short. From some Schwinn bulletins I have a 1970 and later 5-speed Collegiate chain should be 57" (114 links) long, however that bike had a 14-32T freewheel while the '69 and earlier Collegiate came with smaller 14-28T cogs. The 1970+ Suburban 5-speed had the same 14-28T freewheel as the '69 and earlier Collegiate and that bike had a 55" (110 link) chain. Yours should probably be close to that.
 

Jay81

Cruisin' on my Bluebird
Apr 26, 2015
2,280
3,046
Roseville MI
#6
How long is your chain? I ask because the chain appears to be far too short. From some Schwinn bulletins I have a 1970 and later 5-speed Collegiate chain should be 57" (114 links) long, however that bike had a 14-32T freewheel while the '69 and earlier Collegiate came with smaller 14-28T cogs. The 1970+ Suburban 5-speed had the same 14-28T freewheel as the '69 and earlier Collegiate and that bike had a 55" (110 link) chain. Yours should probably be close to that.
That's interesting that you mentioned the chain, I was thinking it seemed a little short too. I'll take a look at the chain length later when I address the derailleur.
 

Jay81

Cruisin' on my Bluebird
Apr 26, 2015
2,280
3,046
Roseville MI
#7
Ok, finally had time to mess with it. Got the jockey wheel cage vertical, and it upshifts and downshifts fine between 2nd and 5th gear.
Before I couldn't get it out of 1st gear, now it won't go into 1st. When I try to shift into 1st, something is binding up, and the jockey wheel cage wants to go horizontal again.
I have not measured the chain yet but I assume this is the original chain, as there is no master link.
Everything seems to be adjusted properly, as far as I can tell.
Any other ideas with this new information? I can usually figure this stuff out but this one is puzzling me.

5th gear:
20180711_182353.jpg


4th gear:
20180711_182420.jpg


3rd gear:
20180711_182435.jpg


2nd gear
20180711_182452.jpg


Trying to shift into first it does this:
20180711_182506.jpg
 

GTs58

Riding a '38 Autocycle Deluxe
Sep 2, 2012
7,883
5,271
Central Arizona
#8
Is your pivot bolt to tight and the derailleur fixed in one position? The whole derailleur should also pivot on the hanger. Can't tell in your pics, but the jockey wheel cage is in a different position in each pic but the derailleur itself did not move.
 

Jay81

Cruisin' on my Bluebird
Apr 26, 2015
2,280
3,046
Roseville MI
#12
Is your pivot bolt to tight and the derailleur fixed in one position? The whole derailleur should also pivot on the hanger. Can't tell in your pics, but the jockey wheel cage is in a different position in each pic but the derailleur itself did not move.
I vote for an overtight pivot bolt also.or it could be jammed somehow.
The pivot bolt was too tight, I cracked it loose and I can pivot the derailleur by hand. It still stays in the same place while shifting through the gears and I still can't shift into 1st. It has a little stop on it where it can't pivot toward the front of the bike, only toward the rear. I tried to manually pivot the derailleur rearward to see if it would shift into 1st, and it still just pulls the cage horizontal, starts binding up and won't go into 1st gear.
Maybe I need a 114 link chain?

20180712_074141.jpg
 

GTs58

Riding a '38 Autocycle Deluxe
Sep 2, 2012
7,883
5,271
Central Arizona
#14
The Corvette 5 and early road bikes with a 25T first gear uses a 112 link chain. Your running three more gears on the large sprocket so a longer chain might fix the problem. Did you try to adjust the limit screw to see if that did anything? The low gear adjusting screw on the bottom of the derailleur.

62om09ab.jpg




The derailleur has pivot stops so don't force it.

5 speed parts 2.jpg
 
Likes: Jay81

Jay81

Cruisin' on my Bluebird
Apr 26, 2015
2,280
3,046
Roseville MI
#15
Pretty sure I already adjusted the limit screw, but I will double check. I will try either adding some links, or get a longer chain, and see if that makes a difference.
 

Jay81

Cruisin' on my Bluebird
Apr 26, 2015
2,280
3,046
Roseville MI
#16
How long is your chain? I ask because the chain appears to be far too short. From some Schwinn bulletins I have a 1970 and later 5-speed Collegiate chain should be 57" (114 links) long, however that bike had a 14-32T freewheel while the '69 and earlier Collegiate came with smaller 14-28T cogs. The 1970+ Suburban 5-speed had the same 14-28T freewheel as the '69 and earlier Collegiate and that bike had a 55" (110 link) chain. Yours should probably be close to that.
I counted the teeth and first gear is a 32T cog. Thinking someone either switched out the wheel or freewheel at some point and didn't use a longer chain. Thinking 114 links might solve the issue.
 

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