strongest cassette body?
Opinions are welcome, empirical data is what I am seeking. Thanks in advance.
Questions for your question:
- Cassette carrier (the part that sits in the hub) or cassette (the thing with the sprockets that sits on the carrier)?
- What brand of hub?
- How many cogs?
- Narrow or wide range gearing?
All that said, the Shimano LX (11x32 / 12x34) are pretty robust when it comes to quasi typical wide range tandem cassettes.
The cassette body is also known as the freehub body, and it looks a lot like this
As for brand, I would like to stick with something Shimano compatible, 9 speed wide range.
This a cassette carrier (sorry, I'm really bored and not too good at photoshop)
Shimano's HF08 rear tandem hubs are probably the most durable, best value and use a steel body.
White Industries use steel for tandems and offer an optional titanium body.
Phil Wood uses steel for its tandem hub bodies and axles,
Chris King also uses steel bodies and axles.
Aluminum and hard-anno aluminum will deform unless you use a cassette where at least the 5 largest sprockets sit on a carrier.