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It's an interesting question.
<span style="-webkit-text-size-adjust: 100%;">As RyanW brought up on the first look (FB comments) it could potentially have more of a effect than a non-instant hub. The thing is that effect would be consistent (rear suspension pulling against drivetrain vs. instant hub engagement.</span>
The more degrees of engagement - say a Turbine wheel at 3-degrees, an Aeffect wheel at 10-degrees and a DT wheel at 20-degrees the farther - based on his theory - the wheel could Potentially move rearward without the hub engaging and the drivetrain exerting a force on the suspension that could potentially disrupt traction.
The issue I have is where the ~ instant engaging hub (Stealth, Onyx, King, I9, Turbine, etc) is consistent that DT hub could be anywhere in the 20-degrees. So it could rotate 20-degrees before the hub engages or 10, or five, or it could engage instantly depending on where it is in the rotation --- one of the things I dislike about pedalling hubs without rapid engagement is the randomness of them.
<span style="-webkit-text-size-adjust: 100%;">It's probably easy for an engineer (not me) to predict an effect that an instant engaging hub would have on a suspension design with an initially rearward axle path (chaingrowth) but I'd like to see the model to map it against a hub with a wide degree of rotation and variance between engagements. </span>
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