Downunder

30 minutes ago, waraton said:

Thanks Skippy, Rotax forum has U.S. products, was hoping for a locally available item (ie Repco etc) so I am not paying Rotax prices with postage on top. 

 

Hi Mike, SILCHEM are closed permanently apparently.

https://www.ebay.com.au/p/610820399

This company has 3 Sopwith 2 seat models...... 

https://airdromeaeroplanes.com/

I was getting this when it was getting too hot.

Is it in a ventilated position?

They are called "nut plates" https://en.m.wikipedia.org/wiki/Plate_nut

I've also found them tight at times. I think the threads on the end are crimped as a locking/anti vibration measure.

I usually run a tap down them.

I was advised by a bloke who built his own aircraft to use nylon washers on screws that have no positive locking measure.

Helps to prevent loosening from vibration apparently.......

Run a tap down the threads.....?

This one may have been the prototype.....

3 hours ago, eightyknots said:

A 2000 foot airstrip is probably too long.

It's only 600 metres....

It's not meant for members.

It's a management box ticking exercise to achieve KPI's or whatever metric they're chasing. 

So MM can go to one of the 20 organisations he's a part of and say "Sh!t yeah bro, we got the best reporting system eva...".

On 14/11/2020 at 5:56 AM, Bruce Tuncks said:

Doe anybody know why RAAus ( and GFA too ) do not put the expiry date on their cards?

I recently found out that the GFA card , which has a date on it, records the date at which you paid. Then I checked the RAAus card. It tells me the date at which I first joined ( for historical interest, this was 1999 according to the card ) but not the date at which the card expires.

There must be a reason in favor of the organizations, but I can't figure it out.  It sure buggers me up, my membership to GFA had actually expired and I didn't know.

Bang your rego (or anyones) into this and Bruce's-your-uncle...😁

https://www.raa.asn.au/our-organisation/registration-search/

I think 5500 wot/flat/level is too low. It leaves no spare power margins.

If set "light" on a cold day at sea level, on a hot day at altitude it will be less and a take off "heavy" on a hot and high strip is where you want power.

If set to 5500 there is also no alowance for altitude degradation.

I set to 5650 wot/flat/level, get 5320 at a good climb and this alows for high density altitude operation, mtow operation and a margin to increase throttle at altitude....

I'll add that in an emergency go-around situation the extra power would be welcomed as well....

Landing Port Augusta in a massive cross wind.

Decided to take off on the taxi way to depart.

No one else was flying and the airport deserted and the taxi way was directly into wind.

I was pretty heavy but off the ground in a couple of meters.....

Some people are getting 4000 hrs with the heads being done at 2000 on a 912...

That's probably going to be my plan .....

Gearbox overhauls can be expensive.

I'm told keeping the oil clean (ulp and frequent oil changes) can reduce this cost significantly.

DO NOT BUY UNCHECKED AND SIGHT UNSEEN.

If the owner wanted that, I would see big red flags!

Treat it as a business transaction and remove emotion.....

Fair enough he wants the money before you take it, but NOT before checked and flown.

Don't get sucked in....

Second hand 912's are eagerly sought after..... no matter the hours and condition.

So as a replacement, this figure comes off of your new engine price.

If buying a straight out new one..... something else would probably be sought by me. 35k.....(with carbs..lol) nah, I'll take a pass on that.

It's just taking the p!ss.....

8 hours ago, Thruster88 said:

A factor of about 1.17 applies to turbo normalized aircraft. 90kias @ 9500 = 108tas x 1.17 = 126knots true airspeed. 

Thanks for that. I should have qualified the 90 kts as being TAS, not IAS at 9500.

I habitually just read off the TAS.....

To what degree does turbo normalizing assist? Is it able to be calculated?

Atmospheric pressure at 10 000 is about 2/3 that of sea level.

So turbo normalizing would boost me 1/3 more power than I would be getting normally aspirated.

I hit an aerodynamic wall at about 90 kts at sea level (I can get 100 kts with alot more fuel burn)so I'm guessing that barrier would be increased in thinner air higher up.

Currently, I'm still able to get about 90 kts at 9500 WOT with the lower power/rpm available, but I'm guessing it's a power level restriction rather than an aerodynamic restriction keeping my speed low.

It can't be as simple as my aerodynamic wall being 1/3 higher if atmospheric pressure is 1/3 less can it?

I'm wondering what speed gain I would get At 10 000 with a turbo normalized engine?

I also imagine going higher again (16 000) would yield far better performance gains if the turbo can keep up with the compression requirements?

There's one for sale at Serpentine, WA. $45 000.

AoA/stall warning indicators.....

Do they allow for weight, barometric pressure and temperature? 

4 minutes ago, 440032 said:

VH aircraft do not get renewed each year, it's a one off cost.

I gathered the rego cost for RAA aircraft was to cover the cost of a person managing renewals, registration and the cost of a plastic card.

We now have a reduced service (with no card) but I bet that reduced cost does NOT flow on to members with a reduced rego fee!

If they made registration "in perpetuity" then they could remove the rego fee and as there would be no need to manage registrations, and no loss to RAA.

The RAA used to extort money for a rego card...... now they just extort money!

I really couldn't care less about a card or not. 

On my list of priorities and problems this comes in at about zero.

ANYONE can bang your rego into this to see if your registered or not. Takes about 3 seconds...

https://www.raa.asn.au/our-organisation/registration-search/

On 02/11/2020 at 1:56 AM, Jerry_Atrick said:

Glad to hear pilot will be (or should be) OK...

 

Noted that the ATSB were informed.. Do they investigate such actions for RAAus aircraft?

No, tax paying Australian citizens are a low priority.

They are only interested in showboating to foreign countries.

$90 mill spent on MH370. More millions spent on ILLEGAL immigrant drownings.....

Seems like Australians mean nothing to Australia...... 

4 hours ago, Yenn said:

All the self righteous rage about the Qatar airport episode. Nobody has come out and saud what the Qatari authorities should have done

Yes, what about the duty of care the airline has to the baby and the responsibility the mother has to the child.... 

4 hours ago, Yenn said:

All the self righteous rage about the Qatar airport episode. Nobody has come out and saud what the Qatari authorities should have done

Yes, what about the duty of care the airline has to the baby and the responsibility the mother has to the child.... 

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