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Suntour Barcons- how many gears?(7 posts)

Suntour Barcons- how many gears?bk19
Sep 15, 2003 12:09 PM
I have seen a number of folks using older Suntour barcons on their cross bikes and was wondering if anyone knew how many speeds they can handle (7? 8? 9?) I know you can get a little more out of them because of the friction shifting, but what is the most anyone has tried?

I am hoping to get it to handle 8sp Shimano setup. The bike is primarily a commuter/ touring setup, so I don't mind not having the indexing.
bar consctisevn
Sep 15, 2003 2:33 PM
its my understanding that because its a friction (actually ratcheting) shifter most any derailer should work. Ill know for sure in about a week, I bought a pair that will be replacing my ergo levers on my 9 speed drivetrain.
re: Suntour Barcons- how many gears?flyweight
Sep 16, 2003 9:32 AM
The determining factor in how many gears it can shift is the derailleur, not the shifter. Specifically, it's the length of the side plates. These plates and the front and rear body parts form a parallelogram. The longer the side plates, the longer the throw and thus the wider a cassette it can travel across. This is also one of the primary reasons why you can't mix and match derailleurs and shifters (such as Campy shifters with a Shimano derailleur)

As for the old SunTour barend shifters, they can cover todays casettes with no problem. I've used them on 8 and 9 speed systems with no problem so long as I used a reasonably modern deraileur.
Thanks!bk19
Sep 16, 2003 11:07 AM
That's just what I was looking for. By side plates, do you mean the derailleur body itself (the two plates that "sandwich" the spring) or the cage plates that house the pulleys?

I had a nearly new RSX derailleur in my parts bin (short cage) that I was thinking of using, but if that doesn't work I will just throw on the cheapy Acera until I pick up something nicer.
Thanks!flyweight
Sep 16, 2003 3:56 PM
The two plates that sandwich the spring, the ones that usually have the group name printed on them.
How many ya got?triangleforge
Sep 16, 2003 11:05 AM
I've used Bar-cons on Shimano 8 cassettes, so they should be able to handle 9 just fine -- or even Campy 10 if you so desire.

If you don't have a pair lying around, you can find Shimano bar ends for about the same price on E-bay, and those will have the option of index shifting (either 8 or 9, depending on the model you get) or friction shifting.

Cheers!
re: Suntour Barcons- how many gears?ctisevn
Sep 20, 2003 12:33 PM
installed mine this morning/last night. handles my campy 9spd cassette/derailer perfectly. and its very smoooth!