Jerry C. said:Dan,
I believe your answer is very helpful, partially because you have a similar bike, and your answer
seems to understand what the local bike shop technician was thinking (right or wrong). I'm working
under the assumption that they are not stupid and are not lying to me to coerce me to buy a new
bike. They are probably ignorant of alternative fixes or sources for parts.
Or they know full well where to get the parts, but are trying to scare you from entering into a full
replacement of your drive train? It can be a slippery slope- what starts as a new chain turns into a
new everything, and you might as well do the bottom bracket while you are at it 🙂
Price out a full drivetrain, and be prepared to spend up to that amount. If you want lower gearing,
price out new cranks and derailleurs, also.
Quoted message said:I didn't elaborate on the bike shop technicians comments, but he did mention something about how
the worn components had changed tolerances (or something like that), and he couldn't get that
chain or some other part any more. I should have remembered the specifics of what he said better.
And the wear is why you need to be prepared to change everything- chain and freewheel certainly. The
chainrings will possibly still work, but new ones will be much better.
Quoted message said:Indexing isn't an issue. I understand you to be suggesting a new front sprocket (perhaps 41/52), a
new chain, and a new bike shop. There is a chance that a new 7 speed cassette in the rear will not
fit. Due to wear on my current 6 spd cassette, will a new cassette (either 6 or 7 speed) be
required if I change the chain?
Jerry C.
---------------------------------
Yep, plan on a new chain and freewheel (Suntour Pro Winner is a freewheel, not a casette).
As to getting a lower gear, it is going to be hard if the chainrings are the old Campy 144mm.
Quoted message said:Dan Daniel said:
The problem with putting on a new chain is that the rest of the drive train is probably so worn
that nothing will work with the new chain.
The chainwheels are probably older Campy circle size- 144mm? I have a Bianchi from this time
period, and the cranks are labeled 'Bianchi' but are Ofmega copies of Campy. These could be the
most expensive part of the rebuild. 41 or 42 teeth is the smallest that will fit. A new crank
set could be the cleanest way to deal with this.
Freewheels are available, six speeds. Be careful about putting a seven speed on- I couldn't get
one to fit my Bianchi.
If indexing isn't an issue, any derailleur will work. Just check the maximum rear sprocket it
will handle.
And find another bike shop. The one you talked to is NOT the one to help you with this.
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Quoted message said:Quoted message said:On Fri, 06 Jun 2003 00:03:32 GMT, "KBH" <[email hidden]> wrote:
Hogwash. Any 7/8 speed chain will work fine. SRAM PC-48 is $10-$15. You could change that 42 to
a 39 (or 38 if its 130 BCD) for a little help.
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Quoted message said:Quoted message said:>"Jerry C." <[email hidden]> wrote in ORIGINAL message
>
>I have a Bianchi circa 1987/1988. It is in good condition save for the chain, which has never
>been replaced. My local bike shop told me that they couldn't replace the chain and it would be
>cost prohibitive to replace the other related component: rear 6 speed cassette, front dbl
>chainring. I have two questions:
>
>1) Can an appropriate chain be found to replace mine?
>2) Can more gears be economically added for climbing hills? (new rear derailleur and new rear
> cassette??)
>
>Components of my bike: front double chainring - Bianchi 42/52 rear 6 speed cassette - Suntour
>Winner Pro BJ 13/24 front derailleur - Campy Nuovo Record ??? rear derailleur - Campy Nuovo
>Record
>
>Any feedback would be much appreciated.
>
>Jerry Cipriano
