> He will do single e-shafts but needs a minimum of ten to make it cost
> effective  'economy of scale' etc. He is currently setting up for a
'single' dyno run.
> He explained there are enormous torque reversals ( term?) in the
> single rotor, so balancing is critical. The advice I posted previously
> on
balancing
> is supported by Guru and the US experts.
> Hope this helps some!
> George ( down under)

 

Hi George,

 

I seem to be coming into this thread in the middle.   Were there other posts to flyrotary about this, or was this message cross posted from somewhere else?  I saw the name Paul, so maybe it was posted "over there". 

 

Cheers,

Rusty

Rusty,

I thought I removed all the reference to Paul, but yes! it was posted to both discussion groups as PL is interested in GURU products.

I know you and maybe others are interested in single developments, so I spread the information.

I only just recently discovered they were looking at the single and I offered to help, but their well down the track as they have done a couple before for people, but they had none of the problems you are seeing - I still feel it's fundamentally a problem with balancing of the rotating components, but it could be a need for a heaver flywheel and I suggested that to GURU. As they build for all manual applications it's something they may not see.

George (down under)