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Post by ozflyer on May 8, 2021 18:01:37 GMT
I see in the handling notes it says :
- B707-320C - 4X P&W JT3D-7 fan-jet engines e/a rated at 19,000 LBS thrust - MGW 335,000 LBS - PAX configuration.
I it possible to use the JT3D-3B with the -320C? I may be wrong, but I think Qantas (and some other operators) had the -320 with the Dash 3B engines as opposed to the -7.
Any help greatly appreciated.
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Post by aerofoto - HJG Admin on May 8, 2021 21:24:30 GMT
Yes you can do that .... use the JT3D-3B sound pack with the -320C. Some -320C's "were" powered by -3B series (usually to standardize engineering and maintenance within operator fleets .... QF's 138B's were already powered by the similarly engineered -D1 so the airline may have selected the -3B for it's -320C's and for that reason), but, not many .... since the -D7 was most common among these heavier aircraft. The primary difference between the -D1 through -3B series and the later -D7 is "engine thrust rating" .... and there was "a slight tonal difference" between both engine types too .... and which Benoit has successfully reproduced within our new -3B and -D7 sound packs for the B707's (and DC-8's too). I assume you already have our -320C aircraft base pack installed .... and with textures other than QF. If you're going to add our -3B sound pack to our -320C aircraft base pack then you can and I suggest you do so as follows .... 1. You'll likely already have our -D7 sound pack installed in our -320C base pack .... named "SOUND". 2. Download and unzip our -3B sound pack to desktop or to a temporary folder .... and rename it "SOUND.3B". 3. Add this new "SOUND.3B" sound pack to your -320C aircraft base pack. 4. For each of your QF textures (only) .... identify and SOUND= data line within the ADD/TO AIRCRAFT/FLTSIM.XX data for each of your QF -320C textures .... and edit this line to read SOUND=3BThis action will ensure your QF B707 textures (only) use the -3B sound pack whilst others within the same base pack will continue to use the -D7 version .... I've been doing "precisely this"/routinely for donkeys years  One can add more than one panel or sound pack to any base pack .... provided these files are each independently named .... and so long as their respective different files names are then edited into the PANEL= and and SOUND= data lines within the ADD TO AIRCRAFT/FLTSIM.XX data. Normally this's "not recommended" in the case of our other simulations .... simply because the audio we provide is compiled in accordance with "certain AIR.FILE based thrust curving" and because this particular data often varies too much between aircraft types/versions even within the same aircraft type family. In the case of our B707-138B, -320B, -320B ADV, -320C, and B720-B (and DC-8-50/F, 61/F, -62/F, and -63/F also) either our -3B and -D7 sound packs can be used with each of these simulations .... simply because the thrust curving data for each of these simulations (only, but, not in regard to any of the others) is "almost" identical. Mark C AKL/NZ |
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Post by ozflyer on May 9, 2021 1:39:55 GMT
OK thanks.
Is this only a sound difference? I wonder if its possible to change the engine performance thrust ratings as well?
Although I'm guessing the difference between 18,000lbs and 19,000lbs thrust as far as performance wasn't that great?
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Post by aerofoto - HJG Admin on May 9, 2021 3:48:01 GMT
Where the sound packs are concerned .... it's "a slight tonal difference" only. If you want an authentic QF -320C engine thrust rating then .... you'll have to adjust "STATIC THRUST" value within the CFG (TURBINE ENGINE DATA section) for your -320C to read precisely as follows .... static_thrust=18000.000000I purposely didn't release a separate JT3D-3B version B707-320C base pack .... simply because the D-7 is far more common among this B707 version .... although I've created one for my own personal use and as I'll describe below. There "IS", as you say, a 1,000 LB difference between the static thrust rating of the -3B (18,000) and the D-7 (19,000), but remember, that's 1,000 LBS more, or less, thrust "per engine" and accordingly .... or a total difference of 4,000 LBS thrust accumulatively .... and which (I assure you) is more than sufficient to make a difference .... "TRUST ME" Remember also the -320C is certified for up to 4,000 LBS more weight than the -320B ADV (so far as I'm aware QF's -320C's were built in accordance with the standard/higher -320C weight certification and not that for the standard/lower -320B ADV certification despite their -3B engine configuration) .... the combined effect (weight and thrust) of which "IS" once again enough to slightly influence performance .... especially if your going to reduce the static thrust rating for your -320C. FYI .... just 500 LBS more/less virtual thrust (and which is then multiplied by the number of engines simulated) and 1,000 LBS more/less virtual weight "IS" more than sufficient to start resulting in slight performance differences (and is why we usually do this .... given it makes for improved accuracy within the finite limits of what can easily be achieved within FS .... and "does" work or we simply wouldn't bother doing it at all) .... BUT .... such performance variations really only become evident when/if one flies each simulation properly/as recommended per the guides we've compiled .... otherwise one's not really going be much-the-wiser. Reducing the -320C's thrust rating to "18,000" LBS will "slightly degrade" it's performance .... though not adversely .... so just fly it in accordance with our recommended -320B ADV handling rather than what's stated for the -320C. Now I'm more precisely aware of what you're actually intending to do I'd recommend you do the following .... 1. Keep your B707-320C aircraft base pack intact .... as supplied by us. 2. Make a 2nd copy of the same B707-320C aircraft base pack .... but .... rename it "B707-320C QANTAS" or "B707-320C JT3D-3B" (perhaps) .... and edit it's STATIC THRUST value accordance with the -3B thrust rating of 18,000 LBS. 3. Use or alias the same B707-320B ADV/C panel assignment as applied to your other B707-320C base pack .... assuming you have the other base pack installed. 4. Add our QANTAS textures and -3B sound pack to this new -320C QANTAS aircraft base pack. 5. Identify the ADD TO AIRCRAFT/FLTSIM.XX stated UI TYPE data lines for each selected QANTAS texture and edit these lines to read "B707-320C QANTAS" or "B707-320C (JT3D-3B)" .... this action will separate these subjects from other 320C's when viewed within your FS Aircraft Selection Menu thereby enabling each to be more quickly identified and selected. Such will ensure you then have the authentic airline/aircraft type/engine type configuration you're obviously wanting .... certainly in terms of both weight and engine thrust. Mark C AKL/NZ |
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Post by ozflyer on May 9, 2021 15:05:26 GMT
Awesome thanks, I'll try that.
Edit : Worked perfectly. Thanks!
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Post by aerofoto - HJG Admin on May 9, 2021 18:55:49 GMT
Glad that worked out for you. It's "a very easy" alternative expansion that can be performed .... "once people know what they want and are doing". "IF" .... you wanted to be pedantic you could do the similar in regard to the B707-320C FREIGHTER base pack too. After serving QANTAS it's B707-320C's went on to fly with other airlines/operators around the world and for many more years .... both as PAX and as freighter configured aircraft. In regard to the freighters we offer -338C (ex QANTAS aircraft) textures for each of the following .... ANGLO AIR CARGO 1986 CF AIR FREIGHT 1987 KOREAN AIR CARGO 1987 ONTARIO WORLD AIR 1979 RAAF 1979/1991/2006/2008 SINGAPORE AIRLINES CARGO 1979 TAMPA COLOMBIA 1986 TRAIN PERU 1983 If you decide upon doing this then all that needs being done is as follows .... 1. Keep your B707-320C FEIGHTER aircraft base pack intact and as supplied by us (it's -D7 configured) .... if you have one at all. 2. Make a 2nd copy of our B707-320C FREIGHTER aircraft base pack .... rename it "B707-320C FREIGHTER JT3D-3B" (perhaps). 3. Edit it's CFG stated STATIC THRUST value to read 18,000 LBS .... after QF service these aircraft remained -3B powered. 4. Use or alias the same -3B sound and B707-320B ADV/C panel assignments as applied to your B707-320C QANTAS or B707-320C JT3D-3B base pack. 5. Add whichever of the above freighter specific texture files that appeal to this new "B707-320C FREIGHTER JT3D-3B" base pack .... if any do appeal 6. Identify the ADD TO AIRCRAFT/FLTSIM.XX stated UI TYPE data lines for any/each of the above selected textures and edit these lines to read "B707-320C (freighter JT3D-3B)" .... this action will separate these subjects from other 320C's when viewed within your FS Aircraft Selection Menu thereby enabling each to be more quickly identified and selected Other PAX version -338C textures you could (perhaps) consider adding to your already established B707-320C QANTAS or JT3D-3B base pack are as follows .... AIR NIUGINI 1985 BMA 1984 KOREAN AIR 1985 LAM 1980 MALAYSIA AIRLINE SYSTEM 1977 ONTARIO WORLDAIR 1979 RAAF 1979/1991/2006/2008 "again" .... these 4 subjects can be assinged to either PAX or cargo specific base packs or even both SOMALI AIRLINES 1982 TAAT 1990 UGANDA AIRLINES 1982 WORLDWAYS CANADA 1982 ZAMBIA AIRWAYS 1980 Again .... it's "a very simple" and alternative expansion that can be performed .... "once people know precisely what they're doing". It's something I've been applying among my own installations too .... and as such I know it works well .... and are therefore content recommending it "for those comfortable enough to want to try it". Mark C AKL/NZ |
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Post by ozflyer on May 10, 2021 15:45:13 GMT
Ok, sounds like a plan to try that with the freighter versions as well. Thanks!
Loving the 707 right now!
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Post by aerofoto - HJG Admin on May 10, 2021 19:15:16 GMT
Hope so (or rather glad to know you apparently are) .... because throughout 2020 and prior to their re-release last December Benoit, George, Mike, and myself did "quite a bit" of work on them (and the -135's too) in order to correct much of what was previously deficient.
Mark C
AKL/NZ
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Post by ozflyer on May 12, 2021 2:23:29 GMT
Hope so (or rather glad to know you apparently are) .... because throughout 2020 and prior to their re-release last December Benoit, George, Mike, and myself did "quite a bit" of work on them (and the -135's too) in order to correct much of what was previously deficient. Mark C AKL/NZ Yeah I’m having a blast using it! I’ve already completed SYD - PER. Then onto MRU. 8 hours or so. Now on my way to JNB, And good thing I work from home. Living the dream.  |
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Post by aerofoto - HJG Admin on May 12, 2021 3:36:41 GMT
That's certainly some "serious" FS/virtual air mileage .... avoid potential for insufficient virtual crew rest though and/or the added risk of exceeding your virtual hours for the month In "AOTEAROA" we call that "retirement" .... the added advantage of which (for me) is that I now get "PAID" for it ... or rather .... they give me back some of what they "ROBBED" from me over the past 41 years  Mark C AKL/NZ |
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