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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 01-02-06, 04:34 PM   #1
genericbikedude
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I just picked up a fuji 450 SE for a very short frind of mine. It has a 27" (630mm) wheel in the back, with a 600A ( ) (541mm) in the front. Completing its strangeness, it has those freaky suntour butterfly shifters. Sorry, no pics. Rest assured however, that this is one strange bicycle. Also! The chainrings ONLY come off from the back! They only use half of a chainring bolt for each spider-arm-thingy! I love this bicycle, and it really is a shame that I am NOT the 5'0" person who gets to ride it.

Anyway, since it is for a beginner, I was going to swap out the drop bars for some risers, swap the cracks for a single ring setup, and build a new rear wheel for it with a sturmey archer hub. Only problem: my hub is 40H. I know that CR18 40H is available in 700C, but it doesn't seem to come in 27". Anybody know where I could find something with 630mm diameter and 40H? My other option would be to bite the bullet and use a 700C, but then the brakes might not reach, (these are "long-reach" brakes, and it doesn't look like I can go down 4mm.

Secondly, can you people tell me what you know about these butterfly shifters? I've only seen them once before. Do people hate them? What kind of bikes did they come on? They are accushift-era, which means that they were not stylish compared to shimano, and may have been overlooked by many. Or they might suck. I can't decide, nor ride this bike.

Thanks!
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Old 01-02-06, 06:23 PM   #2
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The shifters on the bike are suntour command shifters.

...... you could probably sell them for $40-50 on ebay

...... you could do a search of the touring forum, and find out why you may never want to part with them

...... you could give them to me

They look funky, but that is the only complaint that I've ever heard about them. They are as simple and durable as they look.
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Old 01-02-06, 08:40 PM   #3
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The crank you have is an older Sun Tour Edge. I have one on my indoor trainer bike that was rescued from a late '80's Trek 1100. Your right, the larger two chain rings bolt onto the spider arms from the back and there are no bolts or nuts visible from the front of the crank. BTW, the BCD is 130 mm so this is really a road crank. Mine came as a triple with a 74mm BCD for the granny ring. Odd duck
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Old 01-03-06, 12:22 AM   #4
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Is this the bike that you're talking about?

http://philadelphia.craigslist.org/bik/120933092.html
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Old 01-03-06, 07:39 AM   #5
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That's the bike. I was the one selling it
How's it coming along genericbikedude?
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Old 01-03-06, 08:56 AM   #6
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I did not see anything for a 40/27" rim. Try a tandem shop, if there is one out there they will know about it. I will ask our guys when that shop opens. You might also stick a 700 wheel in there to check the reach.
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Old 01-03-06, 10:00 AM   #7
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On closer inspection, the ISO size of the front wheel is 547, not 541. Can I still use 600A (541) inner tubes?
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Old 01-03-06, 04:38 PM   #8
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Quote:
Originally Posted by genericbikedude
On closer inspection, the ISO size of the front wheel is 547, not 541. Can I still use 600A (541) inner tubes?
Sure. Inner tubes are stretchy and tolerant of minor size differences like this. The same inner tube is labeled and sold for both 700c (ISO 622) and 27" (ISO 630) rims so you have no problems.
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