Reading AOPA mag last month on Airships in Australia and in 2 last paragraph it says "Using the reliable Limbach engine". Interesting Ian McPhee
On 22 June 2015 at 18:49, Ian Mc Phee <[email protected]> wrote: > Changing the system can be a big issue and have gone that with fixed > wooden Bishton Props (was approved CASA prop maker) on VW and that went on > for 5 years or more. > > The worst prop you can have is metal and then glass. The good thing > nearly always after a prop strike with wooden prop there is no damage to > the engine at pull down. > > The other issue is people leaving glider outside in bad weather and > letting prop base get wet. I have seen wooden prop covers which are > ripstop nylon top and nylon mesh bottom for prop to breath. I am not sure > where to buy same but would be a good idea for trips away. > > The paying $5000 each 6 yrs 11 months is about $700 a year which is > bearable. > > re MT vs Hoffmann. As I see it the main visual difference is s/s leading > edge (MT) and brass (Hofmann). I have been recently told brass is the > better as is softer and damage is done where the stone hit in a smaller > area is where as s/s dents over a bigger area and S/s can lift off prop. > What do others know? > > Ian McPhee > 0428847642 > Box 657 Byron Bay NSW 2481. > > On 22 June 2015 at 16:25, Nigel Baker <[email protected]> wrote: > >> Hi All. >> Mt prop is due at the end of the year and I am not looking forward to the >> expense and hassles of the 6-7 year routine. >> I have spoken to Bolly Props about a solution. >> Thus I am looking for interest. >> My thought is FRP blades to replace our timber units and run the same >> design hub. >> In other words a FRP copy. >> To do this would mean testing and CASA assessment for certification. >> There would be a significant cost but spread over at least 24 users in >> Australia alone likely worth while. >> My suggestion is a TBO of at least 1000 hours. No calendar life and the >> leading edge strips would be able to be replaced in OZ instead of going >> back to Germany. >> Comments please. >> Nige. >> >> > >
