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Is this possible?(10 posts)

Is this possible?Matno
Jan 18, 2002 10:12 PM
I've got an old Schwinn Super Sport that I'm interested in upgrading. I bought it used in 92 (I think it's a 91 model) and it has served me well. I'm just wondering, is it possible to upgrade this frame to a 9 spd setup or is it a waste of time? It's currently got a 6 spd Shimano 600 setup. I would like to put STI shifters on it and have been offered a good deal on a set of 105's. Would I have to get a new rear wheel? Is my frame even wide enough? Any info would be greatly appreciated. (If this won't work, my current setup still works).
you can make it work butnaff geezer
Jan 18, 2002 10:35 PM
from the componentry you have you will be spending a whole lot on replacing stuff (levers, derailleurs, cranks-bb, hubs, chain the list goes on).

spreading the frame is easy. unless the frame is super special to you or you cant afford any other way around i would keep it as it is as you will likely lose money on it.

with judicious browsing im sure you can likely find a bike with at least 105 9 speed on a bike as least as good if not better than your super sport for around $500.
there are plenty of good used bikes out there.

dont go chasing parts around. your wallet will hate you.
You're probably right...Matno
Jan 19, 2002 7:41 AM
The only thing I really would like is a set of STI shifters. I don't believe they ever made any of those that would be compatible with my 600 rear derailleur. My buddy has a pair of 105's that he'll basically give me, but as you pointed out, that's probably just one step of many that I would have to take. Considering that I bought the bike virtually new in 92 for $200 (what a deal at the time!), it's probably not worth it. Too bad since I love building up bikes, but right now the budget is shot - especially the bike budget, according to my wife... (To her credit, she did buy me some aerobars for the bike last year, which I love since I mostly use it for long rides).

Just out of curiosity, what's the difference in frame width between a 6 speed hub and a 9 speed? I've already got the biggest tires I can fit on this frame (with virtually no clearance), so I'm wondering if widening the frame would also tighten that measurement?
It's only 4mm wider at the drop outs.nee Spoke Wrench
Jan 19, 2002 9:33 AM
Won't change significantly at all near the bb where the tire goes. Bigger tires aren't going to fit.
re: Is this possible?willingtobuy
Jan 19, 2002 6:36 AM
Why don't you sell the old schwinn to fund a new purchase?? What size is it? I may just be interested in buying it from you.

Thanks, :)
Why?nee Spoke Wrench
Jan 19, 2002 6:55 AM
What you are talking about is putting a Porsche transmission into a Volkswagen because you can buy the transmission cheap. You can do it but you will have to replace a bunch of other stuff and, in the end, you really won't be improving it very much. You will still only have a 91 Schwinn Super Sport with some different components.
Why?Matno
Jan 19, 2002 7:45 AM
That would be sweet, although I think I'd go for the Porsche engine first. My '87 Vanagon Synchro would love me! I would rather have that than a full-on Porsche any day of the week. (Little cars are worthless unless you've got time and money to burn, IMHO. My van, on the other hand, can hold 7 passengers AND their bikes and gear!) Of course, you're right that there's little point to it. I really don't need more horsepower than I've already got. 90hp is more than enough for New York City.
Why?grzy
Jan 21, 2002 5:49 PM
What he's saying is that you'll be shocked at how much of the componentry needs to be swapped and when you look at the price of parts it doesn't take long to realize that you can sometimes buy an entire modern bike for the same amount of money. The list of things that have to be changed in no particualr order: STI shifters, crank, bottom bracket, front der., rear der. rear cog set, rear wheel, chain. You can keep the brake calipers and the front wheel, but you may not be happy with how they work and look in comparison. The rear dropouts will need to be spread and aligned. Now, knowing that you run a VW synchro I realize that you are somewhat used to paying $90 for an air filter and may not be as cost sensitive. Also remember that the power from that Porsche motor is going to raise hell with your CV joints, bearings, tires and motor mounts. In the end you'll have around $700 in new parts (Ultegra level) on a heavy old frame (which may not fit as well) and this doesn't include the tools/labor to do the work - a shop will typically want $100 to $200. The cheapest way to buy new parts (short of "midnight supply") is to buy them attached to a new bike. Plus you get all of the improvements in the last 10 years. You can keep you older bike as a beater, or maybe sell it and get some cash for the new ride. If you're really savy you could probably score a super sweet deal on a nice used bike (w/low miles) or even something left over from last year's line up. A few years ago I sold my OCLV with all Ultegra for around $1,000, having bought it for around $1,600 after the model year end . This bike now sells for around $2,500 although there are some improvements, it's still the same basic bike.

Go to one of the many sites on line and see what you're looking at in terms of cost - even if it comes in a kit.
Not worth the time & $ except as a winter project, IMOcory
Jan 21, 2002 8:29 AM
But you already knew that, right? I don't have any five-speed freewheel bikes left, but I do have a six-speed I use as a commuter, so I can compare it to the eight- and nine-speed stuff. For ordinary riding, which to me is everything but racing, having nine cogs in the back is a tradeoff at best. It's fussier, harder to keep running, jams up if a piece of grass goes through it. The six-speed setup just motors along, never misses a shift, gets a squirt of cleaner about once a year and lasts forever. The only drawback is that sometimes I'm not in precisely the right gear...but it's close enough to get up the hill.
upgrade... to a fixed gear.ohio
Jan 22, 2002 2:18 PM
If it's got semi-horizontal rear drops, its itching to become a fixed gear bike. The only cost is a track cog (or a freewheel if you just want a single-speed). Just take off the freewheel, redish, and remove unnecessary mechanical gizmos. Then you're ready to roll...

Bonus: you'll drop at least a pound off the bike, and never ever have mechanical problems/maintenance ever again.