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Just Flight PA28R Arrow III released

Thanks for the HU Martyn.

And I just got my discount voucher which I'm gonna have to use!

(A very nice gesture to all the existing Arrow III customers btw).

Cheers

Paul
 
Just purchased (thanks for the wonderful discount) and downloaded and did my first flight. Performs as advertised except for one item which is interesting. During run up at 2000 rpm I got a 200+ rpm drop on both mags. Did rest of checks then re did the mag check and accidently put rpms 2100 and mag drop was less than 175 for both. It doesn't bother me at all but just found it interesting. Would that be sign of fouling the plugs maybe? Otherwise awesome product and thank you for producing such quality aircraft!
 
aussieman said:
the electronics and avionics should turn on when you flick the battery switch.
Click to expand...
i agree. Should be two start ups simple stupid or real world..not unlike many models DC-3 comes to mind.. Yer mouse pointer is not a finger..turning knobs with it?..would not like it in weather and ifr..some you click some you attempt yo roll a knob..in any event one should not have to become a start up engineer..with out a check list...thnx
 
RKinkor said:
Just purchased (thanks for the wonderful discount) and downloaded and did my first flight. Performs as advertised except for one item which is interesting. During run up at 2000 rpm I got a 200+ rpm drop on both mags. Did rest of checks then re did the mag check and accidently put rpms 2100 and mag drop was less than 175 for both. It doesn't bother me at all but just found it interesting. Would that be sign of fouling the plugs maybe? Otherwise awesome product and thank you for producing such quality aircraft!
Click to expand...

It could be a symptom of plug fouling but I'll try to reproduce the issue here just in case it's something that needs addressing.

Thanks
Martyn
 
Cees Donker said:
I didn't get an e-mail yet? I read that I should have gotten one by now, but alas.

:dizzy:

Cees
Click to expand...

Hi Cees,

Please send me a PM with your email address and I'll ask our marketing chaps to look into it. Everyone who purchased the Arrow III should have received emails yesterday (unless spam filters intercepted them etc).

Thanks
Martyn
 
Martyn said:
It could be a symptom of plug fouling but I'll try to reproduce the issue here just in case it's something that needs addressing.

Thanks
Martyn
Click to expand...

Not a big deal but thanks for looking into it. In case it helps FSX Boxed with Acceleration Windows 10 professional was running with Automixture enabled at the time as I wanted to test altitude performance of the turbo. Also realworld weather was in use.
 
Last edited:
Martyn said:
Hi Cees,

Please send me a PM with your email address and I'll ask our marketing chaps to look into it. Everyone who purchased the Arrow III should have received emails yesterday (unless spam filters intercepted them etc).

Thanks
Martyn
Click to expand...




Hi Martyn,

Got it now after contacting JF support. I looked in my spam folder, but it wasn't there. These things happen. We're all human.


Cheers,


Cees
 
Martyn said:
It could be a symptom of plug fouling but I'll try to reproduce the issue here just in case it's something that needs addressing.

Thanks
Martyn
Click to expand...

I just flew the T-Tail just now and while run up mag drop is normal with the T-Tail there are some issues with power produced by the engine. Gauges show full power but it can barely climb to 2500 feet leaning or running automixture has no effect on the performance. Straight Tail Arrow is fine climbs to 20000 to 21000 just like in real life with same real life performance fall above 12000. Again Thanks for the wonderful aircraft!
 
RKinkor said:
I just flew the T-Tail just now and while run up mag drop is normal with the T-Tail there are some issues with power produced by the engine. Gauges show full power but it can barely climb to 2500 feet leaning or running automixture has no effect on the performance. Straight Tail Arrow is fine climbs to 20000 to 21000 just like in real life with same real life performance fall above 12000. Again Thanks for the wonderful aircraft!
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Obviously the Arrow IV has no power(I didn't try the III but everybody say it's fine). Couldn't get 500 fpm at 97kt and fuel flow is very low , the mixture has almost no effect. I opened a ticket at Justflight few minutes ago!

Cheers

Pat
 
Unfortunately nothing changed with new release, the T-Tail still has power issues and the III still has the mag drop issue. There is improvement with the T-Tail though I can get her up to about 7500 ft before losing power. The fuel flow still seems to be off.
 
We are currently working with the FDE developer to identify the cause. I'll keep you updated.

Thanks
Martyn
 
Martyn said:
We are currently working with the FDE developer to identify the cause. I'll keep you updated.

Thanks
Martyn
Click to expand...
Was just flying around in the t tail some more and discovered if set the prop rpm to 85% very soon after take off i can get full book value climb performance at 89 knots all the way to 12000ft then as per spec power falls off and I was able to reach 20000 ft. I hope this helps with tracking down the issue. Climb rate on the sim straight tail is a lot higher than book. Real world climb is 1000 fpm to 10000 the straight tail in sim is more than that at 97 kts. On the fuel burn on the t tail was really low just over a gallon used to climb to 20000 ft.
I am sorry about earlier posts today with the updated version. I may have had you guys chasing the wrong version for issues. I apologize I didnt know the climb rate was only supposed 1000 ft per minute.
 
Are you making sure not to overboost the engine? Here is some info from the FDE developer:


The first point is, with this aircraft you NEVER firewall the throttle. If you use full throttle, you will overboost the engine (Hg of roughly 46 at sea level - that is correct, confirmed by multiple real-world Turbo Arrow pilots). You should see the little square (greenish yellow at the top right of the panel) light up - that is the overboost warning light. You will also hear a kind of bubbling sound, which is the onset of detonation - the result of which is a loss of power, lower fuel flow and eventually complete failure of the engine.

Please try the following:

Full RPM and Mixture.
Throttle - advance slowly to just below the red line on the Manifold Pressure gauge (so roughly 40 - 41 Hg, you'll be able to take off as low as 38, but the red line is critical)
Carefully creep it briefly over the red line, check that the overboost light comes on (you may also hear the noise change with the detonation) then bring it straight back below.
Take off and fly around, try some climbs but keep the Hg at all times below the red line. You can use your mixture and RPM as normal.

You will find that, as pressure decreases with altitude, you will need to gradually increase the amount of throttle used to keep a given Hg, so that around the critical altitude for the turbo (12,000ft) you will probably have full throttle or somewhere near.
Click to expand...
 
Martyn said:
Are you making sure not to overboost the engine? Here is some info from the FDE developer:
Click to expand...
Yes I am not familiar with flying the turbo arrow but I was avoiding having the overboost light come on. That was how I would set power for take off. Smooth application of power to until the light comes on, pull back a few inches mp and continue with take off roll. I have them figured out well enough for myself. Sorry for any hassle and have a nice day!
 
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