Hi Folks

Firstly for Hal, if you look at the top right grey coloured hub in the image I first posted you will see that the hinge line itself is angled forward . This means there is a delta effect even with the blade fixed parallel to the tang. Using one blade bolt just means that when the rotor strikes the ground it folds up rather than just breaks. On a non delta hub I usually just angle the blades forward so it has its own delta effect then centripetal force takes care of things when it gets going. The bolt has sufficient tension in both the above cases to just remain in position without 'floating'. It works a treat.

Thanks for the incidence info Tintrax. I did the same with my own delta hub, fixing the blades directly to the tangs with no shims. I did notice though that despite having excellent lift the rotor rpm was less than that seen on the straight hinged shim mounted assembly. This gave slightly less roll response. With this in mind I am going to try a small shim on the delta hub to see what effect it has.

I started gyros as you did, all on my own except for the excellent sites you mentioned . I did however get the Simple G plan from Jim as a first model, so you could say I had a small advantage to start !

By the way, the orange blades you can see in the image I posted previously are similar to Tintrax's, doped smooth then sprayed with auto paint. Works ok but tends to crack after time. Next blades I am going to just use polyeurothane lacquer for a 'wood' effect.

Oh dear I do go on don't I

Cheerio

Sean