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Swapping Out Groupset on '73 Schwinn Super Sport

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Swapping Out Groupset on '73 Schwinn Super Sport

Old 09-13-17, 09:58 PM
  #26  
Metacortex
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Originally Posted by BocaJr View Post
The current conversion spindle listed now on ebay is for a 137mm spindle. Will this one still work on the Super Sport? The conversion spindle was referenced above as being 128mm, but maybe this was for an older/expired ebay listing.
All I can say is that the Schwinn specified conversion spindle for a double plateau JIS taper crank was 128mm. I've seen them made by Shimano and SR. The longer one may be good for a triple?
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Old 09-13-17, 10:26 PM
  #27  
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"I'm not sure of what a cartridge-type spindle is, however"

Most newer bicycles use cartridge bottom brackets, which are modular assemblies. These are normally not adjustable or serviceable; but intended to be replaced as a unit when the bearings become worn out or contaminated. Cartridge bottom brackets are much cleaner and easier to work on than cup-and-cone bottom brackets -- grease and bearing balls are entirely enclosed inside the sealed cartridge.

The older style is a cup and cone plus bearings and spindle assembly. They can be cleaned, lubed and adjusted. Don

Last edited by ollo_ollo; 09-13-17 at 10:42 PM. Reason: add quote and info
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Old 09-15-17, 10:54 AM
  #28  
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Thanks again all,

To make this a bit easier, I like the chrome adapter presented by Bianchigirl. Having said that, knowing I'm using a '73 SS frame, can anyone simply suggest, or point out on eBay, a reasonably priced crankset and spindle/ BB that will work on my bike with that adaptor?

I'd like to stay with a double but a triple isn't out of the question. I think I'll have a better understanding by looking at the parts and going through the install process.
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Old 09-18-17, 12:17 PM
  #29  
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Update. I bought a Dura Ace FC7200 crankset with pedals from fellow member LarryBSky and Mr. Larry and the kind folks at Harris Cyclery identified the correct cartridge spindle: Shimano BB-UN55 (107mm spindle length). It looks like I'll need to use the TruVativ adapter (does anyone know if they make one with a chrome finish?)

I picked up the Park Tool BB installer/ remover as well.

I pulled the Ashtabula off the SS. Can anyone tell me if I need to punch out the old cups on the frame shell?

Thank again to all for your help!
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Old 09-19-17, 11:11 AM
  #30  
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Originally Posted by cqlink View Post
Update. I bought a Dura Ace FC7200 crankset with pedals from fellow member LarryBSky and Mr. Larry and the kind folks at Harris Cyclery identified the correct cartridge spindle: Shimano BB-UN55 (107mm spindle length). It looks like I'll need to use the TruVativ adapter (does anyone know if they make one with a chrome finish?)

I picked up the Park Tool BB installer/ remover as well.

I pulled the Ashtabula off the SS. Can anyone tell me if I need to punch out the old cups on the frame shell?

Thank again to all for your help!
Yes, you will need to pop out the old cups. A blunt punch from the inside should do the trick. I'm not aware of any chrome plated adapters, but the bare aluminum ones can be polished to an appearance that's close to chrome.
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Old 07-30-19, 01:59 PM
  #31  
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Originally Posted by cqlink View Post
Update. I bought a Dura Ace FC7200 crankset with pedals from fellow member LarryBSky and Mr. Larry and the kind folks at Harris Cyclery identified the correct cartridge spindle: Shimano BB-UN55 (107mm spindle length). It looks like I'll need to use the TruVativ adapter (does anyone know if they make one with a chrome finish?)

I picked up the Park Tool BB installer/ remover as well.

I pulled the Ashtabula off the SS. Can anyone tell me if I need to punch out the old cups on the frame shell?

Thank again to all for your help!

Hi there! I'm in the exact same build spot as you were here. Mind if I ask how much the crankset was?

How'd the finished project turn out here? Happy with everything? Worth the trouble?
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Old 07-31-19, 07:48 AM
  #32  
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Originally Posted by teamtarrant1 View Post
Hi there! I'm in the exact same build spot as you were here. Mind if I ask how much the crankset was?

How'd the finished project turn out here? Happy with everything? Worth the trouble?
Can't recall the price but I got a great deal. The end result was TOTAL overkill on my end but I always liked that frame and went way over budget on the build.

Here's a few pics:



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Old 07-31-19, 07:52 AM
  #33  
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Which reminds me...I'm going to start a thread on builds that make absolutely NO financial or labor sense. I know there are plenty others out there that have $600 into a bike that's likely worth $200 in today's market!

The $600 doesn't include beer cost either!
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Old 07-31-19, 09:39 AM
  #34  
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Originally Posted by cqlink View Post
Which reminds me...I'm going to start a thread on builds that make absolutely NO financial or labor sense. I know there are plenty others out there that have $600 into a bike that's likely worth $200 in today's market!

The $600 doesn't include beer cost either!
Haha! Beautiful ride man. Love that Blue. In great condition.
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