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Max obtainable speed JF Archer III

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jcorstjens View Drop Down
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    Posted: 30 Oct 2018 at 10:08pm
Immediately upon release I did buy the Archer III from JF, and indeed this is a very nice aircraft inside and out. It flyes gorgeously and all systems work as intended.
I however only have one issue when flying it:
Whatever I do, I never can get a speed above 110 kts which is far too low for a 185HP engine.
Even at max RPM, at optimal leaning and horizontal flight, and flaps fully retracted 110 kts is all I will get!
Can somebody help me out here with an explanation or solution? 
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Delta558 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Delta558 Quote  Post ReplyReply Direct Link To This Post Posted: 31 Oct 2018 at 12:35am
There are two parts to this - firstly, I've just taken it up to check and hit 120 at less than max throttle in FSX-A, so I don't think the problem is entirely due to the aircraft.
Secondly, max structural cruise speed is 125, so whilst I'll accept it's a touch on the slow side (old engine?) and I was told that despite the difference in engine size there was only about a 5 knot gain over the Warrior (heavier engine, spats on the wheels) it's actually not as far off as it may seem.

I think the first thing we need to sort out is why you are only seeing 110 at max throttle when I'm getting 120 at less than max. Could you check our calibrations and make sure you have realism sliders all to max, also which sim are you using?

Cheers,
Paul.
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jcorstjens View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jcorstjens Quote  Post ReplyReply Direct Link To This Post Posted: 31 Oct 2018 at 7:24pm
Hello Paul, thanks for your feedback.

FYI only, I have a PPL SEP and did fly, amongst others, the Piper Arrow II. Currently I fly mostly the French Robin DR400 (Diesel with FADEC).

I am working with the P3Dv4 simulator.
I again tested the Archer today, with autopilot engaged at HDG (co-ordinated flight) and Alt (no climb).
RPM was 3000 RPM (300 > red line) after leaning and speed achieved was 122 kts.
I feel it is too low, so I will need to study the POH to verify.
Hope this info is of use to you also.

With best regards,

Jan


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Wiggi001 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wiggi001 Quote  Post ReplyReply Direct Link To This Post Posted: 04 Nov 2018 at 10:23am
Good Morning

Having had a little flit around in the long awaited Archer, I have to say I'm a little disappointed with the flight characteristics. The JF archer is definitely about 6-10 kts slow at 2400 RPM and more so at 2700 RPM. The engine RPM runs away in level flight to 3000 rpm which is just wrong! EGT seems wrong and doesn't vary with leaning or RPM but the biggy for me is the frame rate hit- its a monster out eating some very complex systems in other aircraft. Having said that JF have modelled a nicely fitted out GA favourite that I'm sure it will be will be improved upon to become a great FS aircraft, but for now back to my doctored Dreamfleet Dakota
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