Chopper,
Yep, to slow and over rotored at 26 ft, agreed.
Chuck,
Thanks for your input.
Mate, I checked the track when I conducted a couple of pre-flight spinups, with the MLS belt drive pre-rotator. From my eyes, they looked good. One blade end is red the other white. They could have been within an inch or two.
I did string the blades and the string went thru the middle of the block.
I have the hub bar centred in the towers, better tolerances than I have with the glass blade set-up. So I believe the thing is geometrically centred(?)
I had to whack on taller towers which Larry Neal had sent me. I had originally decided to buy DW's. Sad but true.
The towers being taller, required a temporary strike plate/teeter stop arrangement to be made.
The interesting thing was THE 2 FOOT HUB BAR HAS A TALLER HUB, THAN THE 3 FOOT HUB BAR, BY .200THOU.
Neither Hub Block suited or worked with my existing Bensen Head/Patroney Blades. ( These are 23 1/2' Blades, weighing 76 lbs and have a 8H12 profile.)
Chuck, I understand what you say about pitch now.
I had to keep forward pressure on the stick and it seemed well forward of it's normal position for straight and level.
This caused me some concern in flight at the time, as we use a stick forward rotor brake set-up and noting the position of the stick, I was worried that the brake was close to being engaged. I know auto-rotative forces can overcome the brake, though at a very low minimum rrpm, I wasn't so sure.
It occurred to me to slacken off the trim spring but did not. I was more interested in noting the differences, than fixing anything at the time. Further the trim spring is already bunched up with full back stick. Someone else on this forum mentioned previously how little trim spring tension is required on the Monarch MLS setup.
Definitely heavier stick forces and the blades seemed to resist or were a lot slower to move to their new position. I was very much a different beast alltogether.
The blades hung on during the flare, though I am not sure if that is simply because I had more wing or the tip weighted addition.
There was a lot going on during those two flights. Lots of thought processes rushing through my head. I understand now just because these 26 footers are spinning so slow, it relates to pitch more so and far less to the mean lift coefficient of the blade....in general as the load is also factored.
So Chuck, do you think these blades are pitched up to much, that's why they are spinning so slow, not withstanding being over-rotored at 26 ft? How much faster do you estimate they will spin at 25 ft disc?
Perhaps if I had the 'new bar' I would find it has less pitch and perhaps then my new 25 ft tip weighted fence picketts would be the Ducks Nuts. Perhaps!
Appreciate the advice from all.
Mitch