I noticed the dual shock setup on the karpiel in the 'post your frame/ bike!!!' thread and i wonder if the Fox air shock there is to help resist bottoming after the main shock has bottomed out? If it is thats an awesome concept!!
Dual Shock Karpiel
Mozo
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I noticed the dual shock setup on the karpiel in the 'post your frame/ bike!!!' thread and i wonder if the Fox air shock there is to help resist bottoming after the main shock has bottomed out? If it is thats an awesome concept!!
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It looks like that bike has a 24in. front wheel and a 26 in. rear! Thats interesting...
actually the shock is only there for rebound damping purposes. When Josh Bender was riding Karps, he kept blowing his shock, but then would get thrown over the bars since theres no more rebound control. The depressurised (or low pressure) air shock would not blow, but control the rebound damping duties. Its basically a safety mechanism.
Its not such a great concept because its actually a band-aid solution to a bad design for what they were trying to do with it.
Its not such a great concept because its actually a band-aid solution to a bad design for what they were trying to do with it.
This bike is a custom build that go-ride.com built for a customer. That is a 12" avelanche and 13" in the back. The handlebars were sitting almost a foot higher (with riser stem) than a normal bike.Mozo said:
BTW Zedro is correct the shocks work simultaneously. My first inclination was that the second shock was for bottming out but that just isn't the case.
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When the Apocalypse was originally designed the concept was for the air shock to kick in as the coil shock was bottoming or nearing bottom. It adds about 2” of additional travel for a total of 13”. I do believe it was developed for Bender, who was having a problem with being bucked over the bars on big landings. In Benders mind it may have been developed for increased rebound effectiveness, but in reality it is the extra travel that makes the big difference.
However, for riders that aren’t pushing the world big drop record, setting the bike up so that both shocks work simultaneously seems to be the best. This is how Jan Karpiel has his Apocalypse set up. I got a chance to test ride the Apocalypse pictured, parking lot only, and the rear suspension was by far the deepest feeling suspension I have ever ridden. Additionally, the progression rate felt very good too. As for actual usability, that is up to the individual rider. My 9” travel DH bike is plenty for my DH needs.
However, for riders that aren’t pushing the world big drop record, setting the bike up so that both shocks work simultaneously seems to be the best. This is how Jan Karpiel has his Apocalypse set up. I got a chance to test ride the Apocalypse pictured, parking lot only, and the rear suspension was by far the deepest feeling suspension I have ever ridden. Additionally, the progression rate felt very good too. As for actual usability, that is up to the individual rider. My 9” travel DH bike is plenty for my DH needs.
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