On Fri, 06 Jun 2003 20:28:20 GMT, "Jerry C." <
[email protected]> wrote:
>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.
> 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.
>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.
>Dan Daniel wrote:
> >
> > 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.
>----------------------------------------
>>> On Fri, 06 Jun 2003 00:03:32 GMT, "KBH" <
[email protected]> 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.
>
>---------------------------
>>>>"Jerry C." <
[email protected]> 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