Re: [Flightgear-devel] C172P Model Year?

2004-12-20 Thread David Luff
On 12/18/04 at 7:15 PM Dave Martin wrote: While you're there, is there any chance of a magneto-related performance loss? ie: when you run left mags only you get a power loss. Cheers :) Hmm, I thought I already had, but it seems I'm mistaken. It's in the LaRCsim code (IO360.cxx), but never

Re: [Flightgear-devel] C172P Model Year?

2004-12-20 Thread David Luff
On 12/20/04 at 11:41 PM David Luff wrote: Of course, oversights like this would get picked up more easily if an adept 3D modeller added a magneto switch to the 3d C172 Oops, found it, bottom left! and pa28-161 :-) It is missing from that though. Cheers - Dave This message has been

RE: [Flightgear-devel] C172P Model Year?

2004-12-20 Thread Jon Berndt
Hmm, I thought I already had, but it seems I'm mistaken. It's in the LaRCsim code (IO360.cxx), but never made it over to JSBSim's FGPiston.cpp. I believe I was gunning for about 25 rpm drop on one vs. two magnetos in the original code. I'll port it over... Dave: There are two active

Re: [Flightgear-devel] C172P Model Year?

2004-12-18 Thread David Luff
Dave Martin writes: On Friday 17 Dec 2004 22:27, David Megginson wrote: Totally up to you, but my 172P POH is for the 1981 model However, I also discovered that the early 172s had more dihedral and a slightly different shape to the aerofoil. Comparing this the FG 172P, which has

Re: [Flightgear-devel] C172P Model Year?

2004-12-18 Thread David Megginson
On Sat, 18 Dec 2004 15:27:09 +, David Luff [EMAIL PROTECTED] wrote: I've always assumed that it's a fairly late model injected 172, in order to justify the current lack of carb heating in the engine model ;-) The 172P is carbureted, unfortunately. All the best, David --

Re: [Flightgear-devel] C172P Model Year?

2004-12-18 Thread Dave Martin
While you're there, is there any chance of a magneto-related performance loss? ie: when you run left mags only you get a power loss. Cheers :) On Saturday 18 Dec 2004 17:37, David Luff wrote: David Megginson writes: On Sat, 18 Dec 2004 15:27:09 +, David Luff [EMAIL PROTECTED] wrote:

Re: [Flightgear-devel] C172P Model Year?

2004-12-18 Thread David Megginson
On Sat, 18 Dec 2004 17:37:35 +, David Luff [EMAIL PROTECTED] wrote: Ah! Carb heating has just moved several places up my TODO list! I'm not sure that the engine model should even be dealing with carb heating -- it would be just as easy for something else to tell the engine the temperature

Re: [Flightgear-devel] C172P Model Year?

2004-12-18 Thread David Megginson
On Sat, 18 Dec 2004 19:15:46 +, Dave Martin [EMAIL PROTECTED] wrote: While you're there, is there any chance of a magneto-related performance loss? ie: when you run left mags only you get a power loss. It would be nice to see that generalized a bit, so that we can eventually model fouled

Re: [Flightgear-devel] C172P Model Year?

2004-12-18 Thread Dave Martin
Simulated carb icing might be exciting too (coupled to weather, of course :-) ) It would certainly make you remember to pull the lever ;) On Saturday 18 Dec 2004 19:39, David Megginson wrote: On Sat, 18 Dec 2004 19:15:46 +, Dave Martin [EMAIL PROTECTED] wrote: While you're there, is

Re: [Flightgear-devel] C172P Model Year?

2004-12-18 Thread David Megginson
On Sat, 18 Dec 2004 20:20:37 +, Dave Martin [EMAIL PROTECTED] wrote: Simulated carb icing might be exciting too (coupled to weather, of course :-) ) It would certainly make you remember to pull the lever ;) Some day, we might model then entire air induction system, the way that we model

[Flightgear-devel] C172P Model Year?

2004-12-17 Thread Dave Martin
Just wondering if the C172P is supposed to represent a specific model year? I've come to the point of placing a landing light on the aircraft but the location is different between early 172s; in the wing with a taxi light and late 172Ps (early 80's) where it is located in the nose with no taxi

Re: [Flightgear-devel] C172P Model Year?

2004-12-17 Thread Curtis L. Olson
Dave Martin wrote: Just wondering if the C172P is supposed to represent a specific model year? I've come to the point of placing a landing light on the aircraft but the location is different between early 172s; in the wing with a taxi light and late 172Ps (early 80's) where it is located in the

Re: [Flightgear-devel] C172P Model Year?

2004-12-17 Thread David Megginson
On Fri, 17 Dec 2004 20:38:33 +, Dave Martin [EMAIL PROTECTED] wrote: Just wondering if the C172P is supposed to represent a specific model year? Totally up to you, but my 172P POH is for the 1981 model, for what that's worth. I cannot even remember the light positions on the planes I

Re: [Flightgear-devel] C172P Model Year?

2004-12-17 Thread Dave Martin
On Friday 17 Dec 2004 22:27, David Megginson wrote: Totally up to you, but my 172P POH is for the 1981 model As it happens I did a bit more research and discovered that the in-wing (landing+taxi) lights were a factory option to the end of the P's production run. So no clues there ;) However,