New PowerTap SL+

I recently got a new PowerTap SL+ and was surprised to find that the freehub body comes off so easily, i.e. with a gentle tug. It seems to be only held in place by the pressure of the quick release on the drop outs squeezing the hub together. The other day I removed my wheel and the outer bit just fell off onto the floor. Is all this normal or is there a bolt missing somewhere? Apart from this, the PT is working fine.

Yup noticed the same here with my SL+... (after reading manual I gather SL+ and SLC+ are that way)... other models require allen keys to come off... I guess it`s part of what they do to make these models lighter.

Something doesn't sound right to me. No hub should just fall apart.

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Nah...It does not fall apart on it`s own here ... but it is easier than other cassette body to take apart...

Here's a photo of the two bits that very easily slide off the axle.

It can't fall apart when it's in the bike, but off the bike there's not much friction holding these three parts together. I already mentioned the outer/end piece falling off when I removed my wheel. Then the other day when I was changing the cassette, I removed the lock ring and then pulled the cogs and the whole free hub and cassette came off in one lump. I then had to press the free hub through the cassette to separate them. The free hub then dropped on the floor and the greasy part picked up some crap, so I wasn't happy about that. I also wonder how easily water might get inside. I have now done 600km on the new hub without any problems, so I guess it is "normal".

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I just looked up the manual on the web (I didn't receive one with the hub) and now I see you what you mean. There is no need for an allen key and it says it can be removed with a "sharp tug". In my case it seemed more like a "gentle pull". Perhaps I'm spending too much time in the weights room...