wooden props

[spacesailor]

You can't ' buy '  cheaper , or made with dedication. 

Than your own work .

Expensive glue , & 3  very cheap ( by comparison ) planks of wood . Glued together. 

Then your hard work to make a $ 50 , wonder propeller. 

Even the " lofting " is simple .

spacesailor

 

[skippydiesel]

32 minutes ago, spacesailor said:

You can't ' buy '  cheaper , or made with dedication. 

Than your own work .

Expensive glue , & 3  very cheap ( by comparison ) planks of wood . Glued together. 

Then your hard work to make a $ 50 , wonder propeller. 

Even the " lofting " is simple .

spacesailor

 

Al true Spacesailer and I am all for artistry, cost savings & personal achievement/satisfaction HOWEVER this should be weighed against the benefits of a ground adjust composite propellers weather resistance, consistency, weight and ability to be optimise for the airframe/mission. 😈

[BrendAn]

2 hours ago, skippydiesel said:

Just wondering - why the fixation on a wooden propeller??

 

There are so many very nice ground adjust props on the market. I wonder would not one of these fit your purpose & achieve a more optimised/durable & weather resistant, fan at the same time? 😈

nothing to do with me.  its for a friends gazelle.  it is registered with a 2 blade wood prop. to fit anything else means a marap.

 

[kgwilson]

 

39 minutes ago, skippydiesel said:

Al true Spacesailer and I am all for artistry, cost savings & personal achievement/satisfaction HOWEVER this should be weighed against the benefits of a ground adjust composite propellers weather resistance, consistency, weight and ability to be optimise for the airframe/mission. 😈

I agree with that. I had 2 wooden props & the maintenance was ridiculous. Stone chips and dents from bugs etc. Even leading edge tape wasn't much help & no ability to tune the prop to the aircraft and flying requirements plus they are heavier than my Bolly Bos 5. The Bolly Bos 5 is carbon fibre, ground adjustable and has a duratuf toughened leading edge which can be repaired or replaced though that hasn't been necessary. I set the pitch to the type of flying I do it is at full max rpm 3300 straight & level at 5000 feet. If I am going on a long cross country trip it takes about 10 minutes to coarsen it up so I get 130 knots TAS at 8000 feet & 2950 rpm. The only maintenance is cleaning splattered bugs off it & rain doesn't bother it. It also has a torus curve on the inboard trailing edge of each blade which aids in pushing more air in to the intake nacelles improving cooling.

 

Absolutely no contest.

[skippydiesel]

22 minutes ago, BrendAn said:

nothing to do with me.  its for a friends gazelle.  it is registered with a 2 blade wood prop. to fit anything else means a marap.

 

There is no second guessing/logic in some bureaucratic decisions but I can't see making your own wood prop being okay and the fitting of a good quality/well tested composite ground adjust, being not okay😈

[Thruster88]

The only legal wood prop would be the one that was initially fitted. A wood prop by another manufacturer would require a maarup. RAAus already have a maruup for a bolly on the Gazelle. 

[BrendAn]

2 minutes ago, Thruster88 said:

The only legal wood prop would be the one that was initially fitted. A wood prop by another manufacturer would require a maarup. RAAus already have a maruup for a bolly on the Gazelle. 

i don't even know what brand it was and why a 912 would have one.   he has a bolly so is going to pay the marap. 

[spacesailor]

" no adjustments " .

To ' adjust ' a wooden prop . You simply , remove a tiny piece of ' leading ' edge ' to increase pitch .

Or remove a tiny piece of ' trailing edge to decrease pitch .

try that on any composite prop that is fixed pitch .

And there was/is " ground adjustable " wooden props ! . That are a fraction of the weight and cost of ' plastic fantastic props .

spacesaiilor

PS. : my aircraft was registered as ' fitted with a home-made wooden prop ' .

So any wooden prop could be fitted . but a composite prop couldn't.  Without a " maruup " as stated previously. 

The weight difference would is huge .

Edited Thursday at 06:30 AM by spacesailor
PS added

[facthunter]

That also happens when your voice breaks.. There's also a thing known as a SALES PITCH. A CRICKET Pitch and "pitching" in . I wooden like an adjustable pitch wood prop. It's getting away from the simplicity. Even the Schneider Trophy Planes had fixed pitch props and they went much faster than anything we fly.  Nev

[Red]

They also had huge 'runways' to get off

[danny_galaga]

I didn't know about marap for props 😞

 

If I keep my plane, and the prop isn't ideal, I had my eye on a Sensenich ground adjustable. So is it the case that to do that is going to be very expensive? 

[BrendAn]

9 minutes ago, danny_galaga said:

I didn't know about marap for props 😞

 

If I keep my plane, and the prop isn't ideal, I had my eye on a Sensenich ground adjustable. So is it the case that to do that is going to be very expensive? 

What rego are you. 19 doesn't need one as far as in know. Certified do.

[Blueadventures]

2 hours ago, danny_galaga said:

I didn't know about marap for props 😞

 

If I keep my plane, and the prop isn't ideal, I had my eye on a Sensenich ground adjustable. So is it the case that to do that is going to be very expensive? 

Being 19 and your the owner builder and any prop change won't need a MARAP.  If you change prop just record the weight of what you take off and put on.  The percentage weight change shouldn't require another w&b.

[danny_galaga]

Phew! I was beginning to think I'd picked an expensive hobby 😅 

[kgwilson]

There is a RAA Tech form 019 that you complete when changing the prop on an owner build aircraft & it needs to be signed off by a L2 or L4 regarding whether test flying is required or not. There is no charge unless the L2 or L4 is a money grubber.

[spacesailor]

Anything for the ' older ' 95-10 registration. 

Just asking ! .

spacesailor

Edited yesterday at 01:58 AM by spacesailor

[BrendAn]

5 hours ago, spacesailor said:

Anything for the ' older ' 95-10 registration. 

Just asking ! .

spacesailor

i looked up the casa website for 95.10, it has been removed and says no longer supported.

then i looked up 95.10 in the raaus portal and it has been removed from there too. click on 95.10 and it goes nowhere.

turbo has some illusion that its still valid but it is not. we need part 103.

[facthunter]

Nice if that information had been notified by those who changed it?   Nev

[turboplanner]

40 minutes ago, BrendAn said:

i looked up the casa website for 95.10, it has been removed and says no longer supported.

then i looked up 95.10 in the raaus portal and it has been removed from there too. click on 95.10 and it goes nowhere.

turbo has some illusion that its still valid but it is not. we need part 103.

Quote your own rubbish.

[Thruster88]

1 hour ago, BrendAn said:

i looked up the casa website for 95.10, it has been removed and says no longer supported.

then i looked up 95.10 in the raaus portal and it has been removed from there too. click on 95.10 and it goes nowhere.

turbo has some illusion that its still valid but it is not. we need part 103.

Interesting, I just looked at the latest, 2 month old tech manual and the section about 95.10 refers to CAO 95.10

[BrendAn]

1 hour ago, turboplanner said:

Quote your own rubbish.

Stop all your cryptic rubbish and point me to the information that says we have a part 103 equivalent. 

[BrendAn]

1 hour ago, Thruster88 said:

Interesting, I just looked at the latest, 2 month old tech manual and the section about 95.10 refers to CAO 95.10

Cao95.10 is up to 300 kg single seat.

But you have to have an raaus certificate and the aircraft has to be raaus registered. 

The old 95.10 was not under raaus .

Cao95.10 started in 1990.

[spacesailor]

My 95-10 registration was  on the raaus list of registered aircraft .

As they tookover AUF  . with my rego on their list .

18 in a builder's list . One is registered in the 19 category. 

Then removed for being out of " wing load factor"  .

spacesailor

Edited 14 hours ago by spacesailor

[Red]

I used to think we had an over abundance of bureaucracy here in the UK, but reading the machinations on here makes me almost feel blessed

[BrendAn]

4 hours ago, Red said:

I used to think we had an over abundance of bureaucracy here in the UK, but reading the machinations on here makes me almost feel blessed

I read once that we are the most governed country on the planet. More restrictive laws here than communist countries.. here in Victoria it is the nanny state. We get told how to do everything yet we have the highest crime rate in the country.