last minute maintenance of a 3x Dual Drive hub
Peter Stock
why not.
question. is there anything I can do / should do at this late stage to improve the likelihood that my SRAM 3x dual drive pullrod hub will perform well?
is there any simple lubrication I should do?
Ken Preston
On May 2, 2024, at 7:52 AM, Peter Stock <lug...@gmail.com> wrote:
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another great conversation from the Bike Friday Yak!
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John Thurston
That's kind of a big question, Peter. You don't tell us how much
distance or time has elapsed since your hub was last serviced. How
it has been used, or if you are seeing any oddities with it. So
any answer you receive is going to be of dubious relevance.
But let's say this is a hub which has been ignored for five years and 3,000KM. I'd give it an overhaul before heading out. That means pulling the guts out, cleaning everything, oiling the gearbox and greasing the wheel bearings. But that's a lot of work, and you have only a few days before packing up to get it done.
I suggest the only thing worth doing is dribbling a little oil
into the gearbox. Do this by laying the bike/wheel on its side,
unthreading and removing the pull-chain, cleaning any dirt from
the exposed hole, and dribbling in about 5cc of 30-weight motor
oil. I wouldn't send in more than that, and if the hub isn't
giving you any trouble, I probably wouldn't even do that. You run
the risk of supplying too much oil (which will wash the grease out
of the wheel bearings), or drawing road dirt and sand down into
the gearbox with the fresh oil.
My page laying out the hub overhaul is still out there https://bicycles.thurstons.us/
-- John Thurston Juneau, Alaska