Dave

Just had a thought (painful!). Do Festo make a nipple that will fit the retract unit with a 3mm nipple on as standard? I think that it is similar to the one that JetCat supply with there turbines for use with the gas quick connect? M5 thread?

Just to keep everyone in the loop the supplied retract units have a 4mm nipple so I fitted 4mm tubing on the original Hawk. We used a UP3 valve so had to reduce the tube sizing to 3mm at some point in the line. On the ground the gear worked fine but in the airflow the gear clearly unlocked and started to move but would not retract all the way. Both Dave & myself flew a circuit and rolled inverted to put the gear and doors away but this is where Simon came unstuck.

Dave has seen this on some of the Comp-ARF Hawks where builders had also used 4mm-3mm tubing. Dave managed to force 3mm tubing onto his units after a lot of swearing by the sounds of it!


Steve