When I got to Teknik’s to drop Fish’s head as I walked into the workshop I could here this god awful noise it turned out to be a 2010 Husky TC450 shock running in the Roehrig shock dyno. The bike has done less then 5 hours, shock had never been apart. The noise is cavitation from a few sources Nick tells me poor factory bleeding, poor pressure balance and the Sachs rebound check ball design all contibute to it.
The dyne doesn’t start properly until the 1 minute mark but when it does listen to the noise of the air in the system
http://www.youtube.com/watch?v=wqVOycJGktc&feature=youtube_gdata_player
BTW the reservoir got that hot in that short time it melted the Sachs sticker on the reservoir :ohmy:
When I went back later Pauly had rebuilt it he and Nick had replaced the stock piston in the Sachs with one of their own t-valves and a different setting to suit. They also removed the stock Sachs check valve assembly. You can no longer hear the wildly cavitating shock and it takes much longer to heat up as a by product of cavitation is heat.

Pauly setting up the 2nd dyno run with the rebuild shock

http://www.youtube.com/watch?v=REIxHx9Qv_I&feature=youtube_gdata_player
That’s a 5 hour old shock :ohmy: Imagine what some of the shocks are like that are being ridden around 3 or 4 years old. How is your shock?
TB