Junkers Ju-52/3m

Hello Ivan,
Water-cooled car engines of the time, with similar cylinder displacement, had higher compression ratio, developing twice the power with the same fuel consumption. The VW engine couldn´t resist the temperatures and pressures involved and would have blown its cylinder heads. I was under the impression that the reasoning behind it followed your line of argument as regards heat dissipation and the engine mass (not the methanol-water injection aspect, of course), quite apart from the weaker and cheaper materials used compared to radial aircraft engines, but then, I´m not a mechanical engineer, so I won´t insist.

As regards the reason for the sim´s shortcomings as regards the simplification of the only few different types of supercharging offered, I was actually just trying to be diplomatic and not blame it on the programmers, although they maybe couldn´t do any better as they weren´t aircraft-engine engineers, and although they must have had some advisors in this field, they perhaps couldn´t apply all the details because they possibly a) didn´t understand them completely, or b) thought it wasn´t necessary and just didn´t want to so many in, so as not to complicate their lives). Thus, we get an approximation of what it should be, and must make do with it! Such is life... Anyway, this is only my impression, as I am neither a programmer nor a computer engineer, so I won´t insist on this either.

Cheers,
Aleatorylamp
 
Last edited:
CFS1 bomb dropping - Visual display problems.

Hello Smilo, hello Ivan,
I´m working on the bomb-aimer´s panel and its workings, but I´m
having some on-and-off problems with the CFS1 bombing feature:

Sometimes the graphic bomb-dropping-and-exploding visual display
from the outside view works, and sometimes it doesn´t - you just
hear their release.

The bombs are defined in the Dp files, and show up as loaded at the
start in the aircraft choice window together with ammo and fuel, and
after being released they always disappear as expected from this load
menu, even though they are often invisible during a flight.
Perhaps it´s a bug in the graphics card.

It happens both in Freeflight mode and in Quick Combat, and I´ve been
trying to figure out what it depends on, to no avail, so I was wondering
if you could perhaps suggest something.

Cheers,
Aleatorylamp
 
Hello Aleatorylamp, Smilo,

I believe the issue with bombs displaying probably has something to do with the model format that is generated by AF99.
The loads do not show up visually and landing gear and propellers do not display properly in AI aircraft nor in multiplayer.

Regarding air cooled automotive engines, there are other examples such as some of the early Porsche 911's and Chevrolet Corvairs that are not exactly low powered. The turbo Corvair actually made pretty good power though I don't really consider any version of the Corvair to be a particularly good car.
By the way, I am not saying your conclusion about the VW is incorrect. I don't know much about the VW.... Though I was actually thinking about building one to drive around in CFS.

By the way, it is a little late, but yesterday I found some very good dimensional drawing for the Tante Ju.

- Ivan.
 
duh...it just dawned on me...
maybe, it would be a good idea
for you to send me the latest bomber version beta,
including, dp, air and aircraft cfg files.
 
New WIP: Ju52 + Guns + Bombs

Hello Smilo,

Here´s the latest Ju52 "Gunship" WIP.
Thanks for your offer to help with the bombs!

The Bomb Aimer´s panel is still in the adjustment stage:
I was more or less getting the scale on the panel for map view correctly
placed for 500 metres = 1600 ft at cruise speeds between 140 and 160 mph
but could only do so intermittently because the sim kept making the
explosions invisible. Then, I haven´t adjusted the 1000 metre (3200 ft) scale yet.

Also, machine-gun option No. 1 defined by the Dp files leaves machine-guns (key 1)
inaudible in my sim, so I´ve got all guns are defined as cannon, option No. 2 in the
Dp files, (Key 2), so at least I can hear them. With a bit of luck you can discover a
possible mistake on my part.

The .air file is the new one, and F10 gives you full WEP power for 5 minutes:
830 Hp at Sea Level with 184 mph at 2300 RPM.

Without WEP you get 658 Hp, 171.4 mph and 2133 RPM, which isn´t bad either,
and it´ll take-off too!
It´s actually the max. power of the earlier g3e auxiliary bomber that was used in
the Spanish Civil War - which I haven´t built.

Anyway, it would be great if you can check the guns and the bombs -
I appreciate it very much!

Cheers,
Aleatorylamp
 

Attachments

  • Ju52-g5e.jpg
    Ju52-g5e.jpg
    50 KB · Views: 0
Air-cooled performance engine

Hello Ivan,
I remember the 911 Porsche from 1969!
A completely different kettle of fish from the People´s Car:
2200 cc, 180 Hp at 6500 RPM, normally aspirated, air cooled - wonderful!
With the price that thing cost, they used better materials than on the ordinary beetle.

I made an airport pick-up truck for FS98 I could send you. Udo Entenmann did the .air file
for it and managed to put in a kind of suspension effect, which was quite spectacular.
I´ve got the AF99 project files, and I´m trying to find the model with the .air file.

If I find it I could attach it to a post if you are interested. You could go careening around
a runway and through a city or around a scenery!

Cheers,
Aleatorylamp
 
preliminary dp report;
at first, i was unable to get the "gunship"
guns or bombs to function in freeflight,
or the quick combat modes.
long story short, i took up the raf662 lancaster,
and tested it in all flight modes.
yes, guns and bombs do function.
instead of bothering with the ju52 dp file,
i renamed the lanc dp and replaced the ju52 dp.
the gunship now has tg2 aft firing guns and dropping bombs,
complete with impact explosions and craters.

more later
 
Hello Smilo,
So it was the Dp files that weren´t functioning properly!
That´s also why only the Cannon were working, not the MG´s.

How strange, thanks a lot! It wouldn´t have occurred to me!
It just goes to show, two minds work much better than one!

I´ll take it from there. I´ll wait for the rest of your "more later"
report, and then I´ll download the Lancaster and use those Dp files,
adapting the boxes and bombload, and adding 2 lateral firing guns
to see if I can get those to work with TG2.

The Dp files for the two already uploaded unarmed paratroopers
versions are derived from the same ones, but without machineguns,
and with paratroopers defined as bombs. So, if these and their explosions
are mostly invisible, it is just as well, as it avoids exploding paratroopers!
How nice!

Update: The Dp files I used came from a previous model, which could have
originated from Dp files someone made for one of my models 14 years ago.
Maybe this version is incomplete and/or antiquated, and probably, a more
reliable method would be to use the default Dp Files that come with CFS1,
and complete those with the functions desired for a given model with Dp Edit.

Thanks again.
Cheers,
Aleatorylamp
 
Last edited:
"quick" note;
i'm not sure if the raf662 lancaster is still available.
but, any bomber dp that works in cfs will do.

important! make sure you delete the old cdp file
whenever you make a change to the dp.
apparently, the sim calls the cdp instead of the dp
unless it isn't in the individual aircraft folder.
the cdp will be rewritten after each flight.

on second thought, here is the renamed lanc dp file.
when you open the attached dp file with notepad,
there is a little gift at the top.
cut and paste it to the bottom of the COMBATFS.CFG
minus the ///s, of course.
then, in game, when you release a bomb, look down.
and see what happens.
to disable it edit the combatfs.cfg entry to ...trainer=0 instead of =1

i hope this helps.
i'm off
 

Attachments

  • Ju52Guns.zip
    2 KB · Views: 0
Hello Smilo,
Thanks for your support and your reminders.

I´ve just tried out the Ju52 bomber version with CFS1 default Dp files,
and they work perfectly, so it´s evidently not my computer or the
graphics card which is at fault.

Thanks for the files you´ve just posted. (Yes, I couldn´t find the Lancaster...)
I´ll look into them report back later. Most probably they will be easier to work
with than to have to adapt whole new Dp Files using the default CFS1 ones.

Very nice!
Cheers,
Aleatorylamp
 
glad to hear the default dp worked.
i didn't think of that.
i'm not sure if the lanc dp would be easier to work with.
either way, the boxes will have to be adjusted.
i'll leave that to you.

if one was curious enough,
one could open the original nonfunctional ju52 bomber dp
and the lanc or default dp side by side and compare.
find the difference, find the problem.
more or less
 
Hello Smilo,
Using Dped, I did find some differences between the
default.Dp files, the old ones I was using, and the Lanc
ones you sent, but none that could indicate any on-and-off
sporadic or momentary failures in the visual display of bombs
and explosions.

Apart from the obvious ones regarding gun positions, offsets
and angles in the Guns Box, the String List Window has some
different items, but I haven´t found a way of editing that, i.e.
changing names or adding things.

For example, the Lanc has a Chin Gun that the default.Dp doesn´t
have, and none have a Nose or Cockpit Gun.

Then, the old ones and the default.Dp ones have Bomb and
Bomb Release options, whereas the Lanc ones and have
Bomb Bay and Bomb Release, but that shouldn´t be a problem,
I suppose. I´m still investigating, though!

Update: I´ve just discovered that the Dp file is a text file
and can be edited with NotePad, so I re-named the Chin Gun
to Cockpit Gun. But from there to seeing why the other Dp file
sometimes causes visual errors is another matter!

At the moment I´m fine-fitting the line-scale on the bomb-aimer
panel. With the altitude being lower than normal, and the speed
being slower, the lines are closer together, but I think it´ll work.

Cheers,
Aleatorylamp
 
Last edited:
to be honest, i don't recall ever messing with dp files.
i was more into flying and left the editing to others.
wish i could be more help.
~~~~~~~~~~~~~~~~~

i was going to suggest renaming
the gun positions with notepad,
but, thought better of it.
funny, i just saw your update.
 
A bit of fun on the side...

Hello Smilo,
Thanks! I further used the Notepad, as you suggested,
and I think I´ve seen an incongruency further down the list,
where the first number in a line referring to the bombs doesn´t
coincide with the correct number in the String List. It is linked
to the fuselage structure instead of the bomb release.

Update -Correction: I corrected the glitch, but it has no effect.
On the uploaded unarmed Ju52 versions, there is no visible change:
You can define the paratrooper load, you can release them in flight,
they are discounted from the payload - and they also remain invisible!
Thus, it won´t be necessary to fix anything. The fact that you don´t
get to see the bombs or the explosions is actually quite convenient!

Another thing, although it´s completely off topic...
but opening a thread for this is totally pointless:

Hello Ivan,
You had mentioned wanting to build a VW car to drive around in,
and I´d mentioned I had built a fun Pickup Truck with a fantastic
suspension by Udo Entenman.

I finally found the model, in an old computer, which I had to fix
before getting the file onto a USB stick! So now I not only have
the source files, but also the model itself.
It´s quite interesting, fun and tricky to drive! It will bounce around
and overturn if you turn into a bend with excessive speed.
The gearbox is automatic, obviously.

Here it is, as an attachment in case you want to have some fun, or Smilo!
--- quite off topic, but oh, well...
untroubled.png
.
...moreover, I doubt it would be serious enough to warrant an upload in the library...

Cheers,
Aleatorylamp
 

Attachments

  • Pickup1.jpg
    Pickup1.jpg
    31.4 KB · Views: 0
  • Pickup3.jpg
    Pickup3.jpg
    46.7 KB · Views: 0
  • Pickup-2.jpg
    Pickup-2.jpg
    34.2 KB · Views: 0
Last edited:
New Dp Files for "Ju52Guns"

Hello Smilo,
I was wondering if you could possibly check the new Dp Files attached.
They are derived from the Lancaster Dp. files you posted, and correspond
to the 4-guns+bomber version of the Ju52 I posted the other day (post #164).
I hope it won´t put you out too much!
Thanks a lot!
Cheers,
Aleatorylamp
 
Hello Aleatorylamp, Smilo,

I suspect your pickup truck would be one of the more popular entries regardless of whether it was "on topic" or not.

By the way, for DP file purposes, my notes show that a 7.92 mm x 57 round + link weighs 1.12 ounces.
This is from the FW 190A Ladeplan.
If there is other armament on the bellicose Tante Ju that you need data for, please let me know.

- Ivan.
 
Rounds

Hello Ivan,
I´m glad you like the Airport Pickup Truck. I should upload it in the library then!

Thanks for the ounces for the machine-gun bullets!
I looked up the weight of the 7.92 mm x 57 rounds and found 0.453 oz, but from
your comment I gather that I must have the gunpowder, the bronze cartridge and
the link. Those guns were on the fuselage sides. OK for the new 1.12 oz. rounds!

Then, in the dorsal position, there was a bigger one, a MG131 with 13mm rounds,
so that had a bit more punch... and at the front on top the cockpit there was
a big whopper: a 20 mm Rheinmetall Cannon! (possibly a MG151/20).

I have the rounds for the MG131 as 1.34 oz., and the 20 mm Cannon as 4.3 oz.
Maybe these are not correct either... I wonder if you could confirm the weights for
these two. I´d be very grateful!

Cheers,
Aleatorylamp
 
You must log in or register to reply here.
Back
Top