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Schwinn MTB Project. Some help needed...

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Schwinn MTB Project. Some help needed...

Old 04-06-20, 04:59 PM
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tincup
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Schwinn MTB Project. Some help needed...

I just picked up what I think is a 1980's era Schwinn mountain bike for...well, $0, it was on the curb. You can see why, it was severely disrespected! I'm planning on completely stripping it down and turning it into a 1x cyclocross bike. But this is the first time I'm actually diving into surgery on a bicycle; have been a rider for a while but just little repairs here and there are the extent of my mechanic knowledge, so I'm going to need a little help. Goes without saying that during this quarantine I'm going a little mad and need a deep project to occupy myself with.

Now the first thing is, can anyone help me definitively identify this bike? It has no markings or badges of any kind. The serial number is SA8700008, which I have not found in any database, and seems to correspond to a 1980s Schwinn Sierra, but some things throw me off, so I can't say for sure.

Here are the first things I plan to do: replace the handlebar/stem setup, to add drop bars. Does anyone know the sizing on these 80s Schwinns? I've not experienced these "all in one" style handlebars. Would a 22.2 stem fit here? I can do quill or threadless, I don't think I have a preference here, just need to figure out rise and angle (for the record I am 6'1")
Second, I want to replace the crankset. However I've never removed or even tinkered with this kind of crankset, how would I remove it, and are modern cranksets even compatible with it? Once we get these details sorted I can start buying some parts and we'll really start dancing as each part added will link the next, and so on. So let's get started! Here are some pics of the poor boy...




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Old 04-06-20, 05:19 PM
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I might be wrong, but I don't think Schwinn MTBs had one piece cranks in the eighties. That might make crankset choices a little limited although I do think there were (still are ?) Conversion BB kits.
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Old 04-06-20, 05:23 PM
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The good news: That’s a cool lugged fork. Interesting camo paint job!
The bad news: That bike is radically too small for you at 6’1” plus it’s quite low-end and not worth sinking time and resources into unless you’ll do the minimum and give it away to a neighborhood kid. Keep looking!
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Old 04-06-20, 05:30 PM
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Originally Posted by nlerner View Post
The good news: Thatís a cool lugged fork. Interesting camo paint job!
The bad news: That bike is radically too small for you at 6í1Ē plus itís quite low-end and not worth sinking time and resources into unless youíll do the minimum and give it away to a neighborhood kid. Keep looking!
This is good advice.
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Old 04-06-20, 05:39 PM
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Originally Posted by nlerner View Post
The good news: Thatís a cool lugged fork. Interesting camo paint job!
The bad news: That bike is radically too small for you at 6í1Ē plus itís quite low-end and not worth sinking time and resources into unless youíll do the minimum and give it away to a neighborhood kid. Keep looking!
now that you mention it... the tires were flat so i never bothered to mount it... damn. Now the search is on for a good frame to make my build. I really liked the idea of bringing a vintage one back to life.
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Old 04-06-20, 05:51 PM
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This one is bigger and cheap, but probably still on the small side:
https://newjersey.craigslist.org/bik...081293468.html

Or offer this guy half of his asking price:
https://newjersey.craigslist.org/bik...087446917.html
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Old 04-06-20, 06:26 PM
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Personally I'd put it back. The lack of a rear derailleur hanger points to this being a HiTensil frame.
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Old 08-07-20, 02:40 AM
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That's not a Schwinn.
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Old 08-07-20, 10:28 AM
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Originally Posted by kjaioqhbkqb View Post
That's not a Schwinn.
To paraphrase Paul Hogan's Crocodile Dundee character, "That's not a Schwinn. That's a Schwinn!"
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