old fart

Some years ago the GFA directed motor gliders to check their fire retardant coatings in engine bays. 

My factory built J160C had raw fibreglass faces on the inside of the upper and lower cowls. 

At that time I coated them with Fire Free 88 paint to possibly gain time in the event of a fire. 

Check their demo video as to the effectiveness.  Our backyard test was equally impressive. 

O F 

I tried Aldi, but never got to use one dollar out of my years package.

Just used the normal dollars untill the year ended and no recourse to stop my $100 wastage.

spacesailor

Before you go with a MVNO like Aldi check their coverage map. The test is Burketown. Telstra and Boost have it covered.

Data Usage. For in the air tracking and general aviation use of Ozrunways away from wi fi my data usage shows 1 Gb should last for about 100 hours flying

Yes have been on Samsung. Just getting to use the iPad mini. When you update on wifi does it just not do it cellular, or do you need to turn off a setting.

I certinaly like the additional features for the apple. Early days and not flown with it yet.

If on wi fi it will use that without turning off mobile data.

I am on Telstra. 1yr exp 5Gb. $50 with Data rollover if recharge before expiry. It is more than enough.

Thanks for this info.

Like you I use a 660 and Ozrunways with the 660 coupled to a TruTrak for occasional assistance assistance.

Previously I have manually entered my waypoints. From now on it is .FPL for me.

The .FPL omission of Helipad may be a good thing. They are not always where they say they are.

An example of this is if you are navigating the Univat VFR route west of Brisbane and wish to stay in the centre of the corridor. You will need to track close to the Wesley Hospital. The Wesley Hospital Helipad is on the VTC and in Ozrunways but placed .6 mile west of the Hospital in residential Toowong. Not a lot generally but the corridor is only 2 wide so at your best you are only 1 OCTA.

The method I now use to accurately set a Waypoint is to have the cursor enabled in Ozrunways settings, set the map to Apple/hybrid and with the crosshairs on the required visible ground feature create the waypoint.

You can change the ID if you wish the first 5 characters to mean something to you.

O F

Great figures OF. For years, I bragged about how  my max cht didn't exceed  150 but after  upgrading the instrumentation, I found the engine ran hotter than I thought and it can go to 160 on climb. At 160, I throttle back and speed up till it goes closer to 150. And my spread is worse than yours, numbers 2 and 4 are about 20 degrees hotter than 1 and 3.

 

Any ideas for making the port side ( 2 and 4) cooler will be most welcome.  I can't figure out why there is a difference, the ducts look the same, I have closed the gaps equally on each side, and the internal deflectors are the same on each side.

 

Strange that no 2 is hotter than 3.

 

If I saw Paul's figures going to 200 degrees, I would freak out for sure. But, as has been correctly pointed out, Lycomings allow higher figures again. I'm confused, but there is a clue in the materials. The gen 4 Jabiru and the Lycoming  use a cast alloy which appears to be similar and much harder than the old Jabiru heads. Even so, 180 would seem to be an achievable maximum.

 

Part of the rationale of the gen 4 engine was that the cylinders would expand on heating and reduce the tightening effect of an alloy piston in a steel cylinder, so I would have expected it to run cooler not hotter. 

 

The Gen 4 heads are effectively one piece thermally with the barrel and the barrel is now alloy and a far better conductor than steel, this would assist in the head at the sensor point being held cooler by the barrel than previous Generations.  A fair bit of the barrel is within the duct.

The barrel now has larger fin area. Someone may have a figure on surface areas of the gen 4 vs earlier.  There is also the relativity of a rough surface of a casting vs a shiny CNC surface of barrel and heads.

As an aside is there an advantage in black heat dispersant coating vs silver alloy finish.  Such coatings are commonly used on air cooled motorcycles.

OF

I have a 160C with a 120 hr Gen 4. Dynon probes and a TC3 gauge.  W100 +.

When first added the indicated temps were high round 180C and correct at room temp.

The correct probe type J or K type needs to be programmed.   

I do not go over 150 on takeoff and cruise round 120 at 12C OAT.

With the standard ducts I did have hotter front cylinders but added two deflectors about 70x12 mm about 45 deg to the top underside of the duct.  They are near the rear of the front cylinders and about the same relative distance as the rear of the duct is behind the rear cylinders.

The spread is now fairly tight 

Example Max figures after 1.8 hr flight at 24 C.  709 742 693 721 - 140 136 139 137

cruise CHT 123. 

O F

First time post. I'm a shy Jabiru J160 owner, looking forward to accessing site.