[Closed] Boostvalve tune on fox shocks?

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haha

I think (prepares to be corrected) that Velocity Tune is what used to be called Compression tune.

Boost Valve relates to a speed (not position) sensitive resistance valving on the shock - so a higher number tune will be more resistant to hits.

I think...

The Marketing bollocks.

http://www.ridefox.com/technology.php?m=bike&t=bv&ref=lnav_tech

cheers guys so does that mean in simple terms that a higher boost tune and firmer velocity tune better for heavier riders?

Boost Valve relates to a speed (not position) sensitive resistance valving on the shock - so a higher number tune will be more resistant to hits.
I think...

No it's the other way round - boost valve is a position sensitive compression damping that adds more resistance asthe shock gets deeper into its travel. According to Avalanche the problem with this occurs when you get a succession of big high speed hits. Just when you're wanting the shock to actually use its travel the boost valve is preventing this. From personal experience it can be a problem on some bikes and not others. My Nicolai Helius with RP23 was very harsh over successive hard hits and the shock virtually locked up. I reckon that a much much lower boost valve tune would've helped this but I went the whole hog with Avalanche and had it removed and tunes by them with their Speed Sensitive Damping (SSD) - it's now totally cured of its harshness - at some cost though as it had to be sent to the States.

As yours is an Orange 5 - I've had numerous Orange 5 (sub 5s too), and patriots and 224, so loads of experience on single pivots. Put simply, I've found that the rear end locking (what some folk call suspension Jack, which is some thing a bit different) is exaggerated by using Fox shocks with high boost tunes. I don't think it's a coincidence that they ride extremely well/betterer on Cane Creek Double Barrels.