Touring - Do Chainrings Really Need Ramping and Pinning?
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05-09-12, 02:00 AM
So I need to replace my chainrings on my Long Haul Trucker, 9speed, triple (48, 36, 26). I want to stay with the same teeth count. I was thinking about maybe going with the Salsa Chianrings (http://salsacycles.com/components/chainrings1/), or maybe even the Surly Stainless Steel Chainrings (http://surlybikes.com/parts/stainless_steel_chainrings).
It's a touring bike and will never need to quickly change gears in front, as well I am using friction bar end shifter in the front. I know bikes in the past didn't have ramps and pins and worked fine. Will it be that much slower and difficult to shift? Does anyone else use non-ramped and pinned chainrings here?
I do, with STI no less. No shifting problems here. Ramps and pins certainly aren't bad to have, but they aren't a necessity.
05-09-12, 02:50 AM
I have an old tourer with friction shifting and no ramps or pins. Shifts like butter.
05-09-12, 10:40 AM
I think it helps alot when you have indexed shifting,you don't need them with old style shifters.
05-09-12, 10:50 AM
In most cases ramps and pins smooth out shifting and an old school trick with non ramped rings was to put a little tiny bend in a small number of chain ring teeth... a small bend inone tooth at 90 degree intervals helps pick the chain up and can smooth out the shift.
05-09-12, 11:12 AM
The surly rings should last a long long time but assuming I read it correctly you will only be able to replace your middle ring as they do not make sizes that will fit your granny or big ring.
It will shift slower but on a touring bike it should certainly be tolerable.
05-09-12, 11:16 AM
+1, with the Left Bar end shifter on Shimano's index being friction,
the traditional overshift and trim back shifting worked fine, for decades,
before they came up with the ramp and pin thing.
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