Suntour Accushift Barcon: how to get friction mode?
05-07-14, 08:31 PM
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Suntour Accushift Barcon: how to get friction mode?
I was delighted to find a pair of these at my local co-op, but less delighted when I got home and found that switching from "7" to "F7" (I thought it was "FR") on the right lever doesn't seem to switch to friction mode, but rather to a sort of "softer indent" mode.
Am I right in thinking these aren't going to work with Shimano freewheels?
Any ideas?
Am I right in thinking these aren't going to work with Shimano freewheels?
Any ideas?
05-07-14, 10:45 PM
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I was delighted to find a pair of these at my local co-op, but less delighted when I got home and found that switching from "7" to "F7" (I thought it was "FR") on the right lever doesn't seem to switch to friction mode, but rather to a sort of "softer indent" mode.
Am I right in thinking these aren't going to work with Shimano freewheels?
Any ideas?
Am I right in thinking these aren't going to work with Shimano freewheels?
Any ideas?
1. Twist the metal loop a couple times until it is loose
2. turn the black dial from index to friction
3. Tighten the metal loop back up.
Not sure what the F/7 is. It's not on my 7speed accushift barcons. Perhaps some paint has chipped?
In my experience, they do not work well with Shimano freewheels and I run mine in friction. But I have read some people have had luck getting them to work. IMO, I think you should try it out and see. If you start getting stuck between gears, then switch it over to friction.
Last edited by spencewine; 05-07-14 at 11:18 PM.
05-07-14, 11:08 PM
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I've seen Suntour indexed shifters with 3 modes, for 1) index, 2) friction, and for the worst of both worlds, 3) F7, which is an index mode that is plagued by friction and weak indexing.
Never turn the selector ring/bezel forcefully, it should only be turned after the screw is loosened.
Never turn the selector ring/bezel forcefully, it should only be turned after the screw is loosened.
05-07-14, 11:47 PM
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If there is not an external friction shifting setting, you might be able to just open them up and gut the index mechanism. I seem to remember that suntour index shifters used small ball-bearings and a notched plate to create the index clicks, removing the bearings should disable the clicks.
05-08-14, 03:30 AM
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Thanks everyone for the info. I did loosen the machine screw before twisting the ring. There only seems to be 2 modes: 7 and F7.
Hmm..I be happy to gut the mech, but I can't see any way to open it up. Any clues?
I've attached pics. There seems to be a sort of spring clip around the central tube: Is that the way in? If so, I'll need some tips on removing and replacing the clip. I don't know how to work with those.
Hmm..I be happy to gut the mech, but I can't see any way to open it up. Any clues?
I've attached pics. There seems to be a sort of spring clip around the central tube: Is that the way in? If so, I'll need some tips on removing and replacing the clip. I don't know how to work with those.
Last edited by John Nolan; 05-08-14 at 03:56 AM.
05-08-14, 03:32 AM
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I have a 6 speed version that has that problem too. I loaded a 7spd freewheel on my hub and thought I could use the friction mode for shifting. The soft indent existed between the extremes of the lever range that made shifting problematic. Ended up putting the 6spd back on. I would like to have a 7spd Accushift BarCon but the prices are too extreme. I may replace them with the standard Suntour friction BarCons, which I have a couple of extra pair, and sell them for a ridiculous price they appear to bring.
05-08-14, 06:40 AM
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Are you saying you wish you had the barcons I have? If so, pm me: I'd be more than happy to trade for friction barcons!
05-08-14, 06:41 AM
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I was delighted to find a pair of these at my local co-op, but less delighted when I got home and found that switching from "7" to "F7" (I thought it was "FR") on the right lever doesn't seem to switch to friction mode, but rather to a sort of "softer indent" mode.
Am I right in thinking these aren't going to work with Shimano freewheels?
Any ideas?
Am I right in thinking these aren't going to work with Shimano freewheels?
Any ideas?
There was recently a thread on Accushift compatibility- this post talks about Accushift 7 speed:
https://www.bikeforums.net/classic-vi...l#post16607207
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05-08-14, 06:43 AM
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I'm wondering if I might get lucky swapping the shifters. The left would probably work for rear friction shifting; I'm wondering: out of the 7 indexed positions on the right, might I find 3 positions that would shift the front rings?
05-08-14, 07:43 AM
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@John Nolan Maybe but they might not be consecutive sequence. My left shifter changes rings at about 2 clicks between outer and middle and all the way for the inner.
05-08-14, 10:43 AM
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Anywhoo, I want to try an arrangement where I'd have the normal right-hand shifter shifting the front anyway, so maybe I'll try it with the XC-LTD Accushift and see if it won't be good enough in the kinda-sorta-friction mode it does have available.
05-08-14, 10:46 AM
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You will probably have to open up the shifters and remove some parts to make them work in friction. I've done this to two sets of SunTour Command shifters and it's worked out well. There's a tutorial on this subforum with pictures, etc. that I followed.
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