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Rear hub choice for heavy touring tandem with Arai brake

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Danneaux:
Happy, safe travels, Marcus; may your trip be full of only the "right" kinds of Adventure!

All the best,

Dan.

mumford:
So I've finally got round to opening up the hub after a lengthy search for new cones and bearings (I think I found the last two sets in the whole of the UK and got them shipped to Greece!). Its not a pretty sight though (see attached). The drive side is heavily pitted, the bearings were in a terrible state and the cone has begun disintegrating.

With the new parts fitted I have two options:
Tighten it so that there is no play but it feels a bit stiff and you're can feel a slight grinding on the beating surface. Or allow a tiny amount of play so that it runs smooth.
I've opted for the latter but suspect it'll loosen up more quickly so will require some frequent care and attention.
With another set of cones and bearings on standby the hope is we should be OK for a good free thousand kms yet but we'll have to wait and see.
is there anything that can be done to revive a pitted hub?

Danneaux:

--- Quote ---is there anything that can be done to revive a pitted hub?
--- End quote ---
In this case, the answer is "Yes, perhaps".

On a freehub, the right-side bearing race is contained in the freehub body. If you can find a replacement freehub body, it can be screwed onto your hub and the wheel would not even need to be rebuilt. SJS Cycles has some. See: http://www.sjscycles.co.uk/page/find/?geoc=us&name=freehub%20body&page=1

Cassette-side bearings wear more because they are under higher loads from drive torque, especially on a tandem. Replacing the freehub body should see you good to go.

Best,

Dan.

mumford:
Ah yes, of course! That's great news thanks Dan. Hopefully there won't be too much damage to the new bearings before I can fit a new freehub. Also need to find a free hub from somewhere... I'm sure there will be one in Istanbul though.

Jack_Luke:

--- Quote from: Danneaux on November 09, 2014, 07:52:17 PM ---For awhile, I was in negotiations to have an adapter made to go from a 6-bolt disc hub to a threaded Arai mount. Things looked promising for awhile, but fell through. I'm now looking at the problem anew and wondering if the Arai's backplate could be modified for a 6-bolt disc hub. I've found the Arai to be really helpful on long, steep descents. With its SunTour bar-con actuator at full lock as a drag brake, it keeps the speed down to around 68kph/42mph. Without it, I commonly hit speeds over 101kph/63mph with a stoker aboard on the steep hills surrounding Eugene on three sides. I use SunTour and Scott/Pedersen SE cantilevers along with the Arai. Drums can absorb a *lot* of heat and still work well. I've seen mine glow quietly after long nighttime descents.

--- End quote ---

Hello Dan. Apologies for dredging up such an old thread but I'm keen to hear more about this proposed 6-bolt to Arai thread adaptor.

I'm committed to using an Arai drum brake in the long term (we've only just had our Orbit repainted with the Pac-Man mount intact!). I'm very happy with my DCR Arai-threaded hub, but spares are patchy. The ability to swap to more widely-available hubs would put my weary mind at ease.

The link you have shared no longer works and isn't available on the Wayback Machine. I don't suppose you have any notes, discussion or drawings of the adaptor? It is something I would consider having made one-off, if so.

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