Bike Forums - Brifter question.

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o0adam0o

08-23-10 05:33 PM

Brifter question SOLVED

solved thanks!

operator

08-23-10 05:38 PM

7 clicks is 8 speed.

o0adam0o

08-23-10 05:41 PM

Hahah nice... i actually thought thats what was going on. I assume the same applies for the front? 2 Clicks 3sp?

Thanks!

CACycling

08-23-10 06:23 PM

2 clicks = 3spd (unless there is a trim function which isn't the case for Sora).

o0adam0o

08-23-10 08:16 PM

solved thanks!

wrk101

08-23-10 08:23 PM

7 speed bike usually means 126mm rear spacing. 8 speed requires 130mm spacing. So unless you have a seven speed cassette on a 8 speed wheel (with a spacer behind it), you are not going 8 speed.

o0adam0o

08-23-10 08:31 PM

solved thanks!

Al1943

08-23-10 08:37 PM

The 8-speed shifter won't work well with a 7-speed cassette (or freewheel) because the cog spacing is different. The derailleurs should be compatible except that you need triple derailleurs for a triple crankset, if you do that.

o0adam0o

08-23-10 08:41 PM

solved thanks!

Al1943

08-23-10 09:37 PM

Quote:

Originally Posted by o0adam0o (Post 11341885)

You sure about that? Theres numerous threads about people using 8sp shifters on 7sp cassettes...

Shimano 7-speed cog spacing center to center is 5.0 mm. Shimano 8-speed cog spacing is 4.8 mm. Campagnolo 8-speed cog spacing is 5.0 mm.
An 8-speed cassette will not fit on a 7-speed freehub.

http://www.ctc.org.uk/DesktopDefault.aspx?TabID=3946

o0adam0o

08-23-10 09:50 PM

solved thanks!

operator

08-23-10 09:51 PM

Quote:

Originally Posted by o0adam0o (Post 11341885)

You sure about that? Theres numerous threads about people using 8sp shifters on 7sp cassettes... as far as the cranks well its no biggie i can sell the triple and get a double if they dont work or buy a triple derailleur. My mechanic said he can do it so we shall see.

There are numerous threads because they are idiots.

8 speed shifters will not reliably shift 7. Unless you count half assed shifting as 'working'. No

cyclist2000

08-23-10 10:26 PM

Quote:

Originally Posted by operator (Post 11342304)

There are numerous threads because they are idiots.

8 speed shifters will not reliably shift 7. Unless you count half assed shifting as 'working'. No

That was good for a laugh before bed :thumb:

o0adam0o

08-23-10 10:30 PM

I came here to learn and didnt think people would actually get upset and insult. I guess ill just forget about all this. Thanks to everyone who took time to comment!

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