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anyone with a *silent* drivetrain?(8 posts)

anyone with a *silent* drivetrain?joe friday
Dec 21, 2003 11:30 AM
i'm talking about NO noise? my chainline is only 0.5mm off
and is all new and the same size, but it makes a 'rattling'? noise. it doesn't seem like it would be from the chainline, i'm wondering if the chain itself just has
a resonant frequency? it's an aluminum frame so maybe that's
possible? any help? thanks!!
What size chain?Dave Hickey
Dec 21, 2003 5:10 PM
I've noticed a 1/8 BMX chain was much louder than a road chain.
One idea...........Len J
Dec 22, 2003 7:43 AM
is to check that the cog is straight up the chainline, centered in the rear dropouts.

I have noticed that if I don't get my rear wheel perfectly centered, the chain "rattles" as it crosses onto the cog. I have begun to notice this noise on other riders bikes, I always want to stop them and fix it for them.

There is a "sweet spot" where the cog is perfectly aligned with the chainline where the noises disappear.

One idea...........joe friday
Dec 22, 2003 11:57 AM
it's a 1/8" Izumi V chain, i will try to get it centered,
I thought it was but it's not easy to know for sure--
I guess i'll know when it stops rattling :)
If, like mine, the chain line is less than perfectdzrider
Dec 23, 2003 9:03 AM
Should I continue to compensate by using the dropout screws to aline the cog with the chain? It's quieter if I do.
re: anyone with a *silent* drivetrain?PaulNYC
Dec 22, 2003 12:04 PM
I think mine is silent, but I cannot be sure, because my seat spings queek. I agree with what the others have said.
Mine isDave_Stohler
Dec 23, 2003 9:06 AM
My chainline is dead-nuts on (both on fixed and free sides), and I'm using a KMD track chain-the cheap one that costs $15. My ring/cog combos are as follows:

fixed: Salsa 45 and Surly 16

free: Shimano 600 and Shimano 18 BMX

I regularly scare the bejeezus out of people by silently overtaking them on the local MUT. My big 38 Nimbi tires are also very quiet. I sometimes scare crackheads down at the local park by approaching silently under the bridges there. The bike cops really should look into riding something like this!
1/8 chain, 3/32 cog would do it.Alex-in-Evanston
Dec 23, 2003 10:02 AM
Since it doesn't fit snugly on the teeth, the chain will "pop" back and forth, alternately resting on the inside plate and the outside plate.

It's very annoying.