From what i have read on other forums they are really stiff so in the that regard quite good. Their weight is getting close to the light spinner and rock shox forks AFAIK. Another one is called the Kilo. www.starbike.com
sells them. Their biggest problem is they are taller/longer then the standard sus fork so it would change the geometry of an existing frame or you would want to get a custom frame. Other than that crucial issue I think they are supposed to be really really good. Don't know for sure, but if I were getting a custom made frame I would seriously consider the kilo and perhaps one of those others. I would be surprised if anyone here uses them since they are kind of a weird Euro thing (not considering the AMP - my friend has one BTW)
correct - there's the Look/Fournales and the German-a Kilo. and for sure older AMP forks.
i have ridden the AMPs and with the Look. with the Look icouldn't find a setting i liked. it would either bob and blow through the travel or be too stiff and use only half of the travel. we weren't able to find the right mix.
now to the Kilo which in my eyes is a faulty construction:
the fork might have a perfect damper, it's stiff and all BUT the overall lenght is MUCH bigger than comparable forks. it measures 48cm which is the lenght of 120mm forks. on the other side it offers just 78mm of travel!!
so put tthat fok into a any crosscountry bike and you offset your geometry by 2 degrees (slower steering that is). it not only changes your steering angle but also raises your BB height, it also affects your seat angle as well as the center of gravity. any technically oriented guy understands that these numbers alone make that fork useless.
now another fact: you don't see any linkage forks in motorsports! if this system would have any advantage over a telescopic fork you bet it would be used in motorcycles as well. several manucfacturers tried for years but as we all know the telescopic fork is the one that's used by ALL manufacturers. the manufactiurers of linkage forks always praise how their forks remain up when braking into corners not giving away any valuable travel...well - the fact that a telescopic fork compresses is also a welcomed feature to some degree. a compressed fork makes for steeper head angle and thus allows sharper steering. it moves the center of gravity forward and thius makes for more grip on the front wheel....
anyway - you realize i don't like the Kilo at all. however the carbon prototype shown at Eurobike had a super-low weight. it wasn't raceable yet...
anyway - the only bikes i see that could accept a German-A fork would be 100mm XC-fullys. but then you give up 22mm of travel...
hey - have we ever talked about the cost of these? we better dont!