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Blender2FSX scale problem

F

FJClarke

Messages
9
Country
canada
Hi everyone,
I am fairly new to Blender and Blender2FSX and I have watched and followed krispy1001's tutorials on making a model that will fly in FSX. All the models that I have tried to use in FSX were sunk below the surface up to the base of the wing. I asked Kris for help and he noticed that my little 20 foot long plane was actually MUCH larger than that. I put my model up close to a 45 foot wide building in FSX and my model wouldn't even fit into it. In fact, the tip of the propeller is through the roof and the wing span is about 135 feet (estimating from the size of the building).
I have done a fresh install of blender and blender2fsx(8.6).
Does anyone have an idea that I might try to get the scale of my models to fit into FSX?
Frank
 
Ronald

Ronald

Resource contributor
Messages
974
All the models that I have tried to use in FSX were sunk below the surface up to the base of the wing.
Click to expand...
If you have:
- created your 3D model with the right internal Blender UNITS (feet, meters) and
- you have selected ALL PARTS and set the Blender SCALE to 1.0
- then exported, you do not have a scale issue.

This phenomena has nothing to do:
- with the Blender SCALE factor of your 3D model INSIDE Blender.
- but everything to do with the value of certain aircraft.cfg parameters


How can this be fixed? Watch Krispy1001 video #7


A - Look at ~13 minutes after the start
Krispy explains here that you need to set the correct distance between:
- THE CENTER of your 3D model (the "origin point" / "the heart" / "Center Of Gravity" , the place where x=0,y=0,z=0)
- the GROUND-LEVEL at the bottom of your landing gear wheels

B - Look at ~29 minutes after the start:
This distance needs to be set exactly in FEET into the 3D models.. AIRCRAFT.CFG file
- section:[Contact Points]
-- parameter: static_cg_height:

NOTE:
- If you make the static_cg_height distance = Contact_points distance , then the tires stand ON TOP of the underground appearing to be rock-hard
- If you make the static_cg_height distance a few inches smaller then the contact_points distance, the tires sink into the ground, just a little, to appear de-flated

TIP: Download my Krispy 1001 Blender2FSX video transcript series over here, so you can quickly browse through the valuable contents of each video:
- http://www.fsdeveloper.com/forum/resources/blender2fsx-krispy1001-tutorial-video-transcripts.192/
 
dave hoeffgen

dave hoeffgen

Resource contributor
Messages
1,439
Country
germany
FJClarke said:
Hi everyone,
I am fairly new to Blender and Blender2FSX and I have watched and followed krispy1001's tutorials on making a model that will fly in FSX. All the models that I have tried to use in FSX were sunk below the surface up to the base of the wing. I asked Kris for help and he noticed that my little 20 foot long plane was actually MUCH larger than that. I put my model up close to a 45 foot wide building in FSX and my model wouldn't even fit into it. In fact, the tip of the propeller is through the roof and the wing span is about 135 feet (estimating from the size of the building).
I have done a fresh install of blender and blender2fsx(8.6).
Does anyone have an idea that I might try to get the scale of my models to fit into FSX?
Frank
Click to expand...

In case you model from blueprints make sure they have the correct size in Blender so your plane has the correct size.
I do that by mapping the blueprint onto a cube and giving it the correct size (which often is found on wikipedia or the blueprints themselves).

I'm not a big fan of Blender's background image feature in that case as it is much harder to achieve the right size and impossible to correct the aspect ratio.

hope this helps :)
 
F

FJClarke

Messages
9
Country
canada
Ronald said:
If you have:
- created your 3D model with the right internal Blender UNITS (feet, meters) and
- you have selected ALL PARTS and set the Blender SCALE to 1.0
- then exported, you do not have a scale issue.

This phenomena has nothing to do:
- with the Blender SCALE factor of your 3D model INSIDE Blender.
- but everything to do with the value of certain aircraft.cfg parameters


How can this be fixed? Watch Krispy1001 video #7

A - Look at ~13 minutes after the start
Krispy explains here that you need to set the correct distance between:
- THE CENTER of your 3D model (the "origin point" / "the heart" / "Center Of Gravity" , the place where x=0,y=0,z=0)
- the GROUND-LEVEL at the bottom of your landing gear wheels

B - Look at ~29 minutes after the start:
This distance needs to be set exactly in FEET into the 3D models.. AIRCRAFT.CFG file
- section:[Contact Points]
-- parameter: static_cg_height:

NOTE:
- If you make the static_cg_height distance = Contact_points distance , then the tires stand ON TOP of the underground appearing to be rock-hard
- If you make the static_cg_height distance a few inches smaller then the contact_points distance, the tires sink into the ground, just a little, to appear de-flated

TIP: Download my Krispy 1001 Blender2FSX video transcript series over here, so you can quickly browse through the valuable contents of each video:
- http://www.fsdeveloper.com/forum/resources/blender2fsx-krispy1001-tutorial-video-transcripts.192/
Click to expand...
Thank you so much for your help and time. I did a re-read of the instructions on getting started with Blender and I totally missed the part about setting the scale to 1. I guess I assumed that doing a CTRL-A set the scale to 1. I missed the little scale box on the right hand side. My apologies for my inattention to basic details.
Frank
 
F

FJClarke

Messages
9
Country
canada
Thank you so much for your help and time. I did a re-read of the instructions on getting started with Blender and I totally missed the part about setting the scale to 1. I guess I assumed that doing a CTRL-A set the scale to 1. I missed the little scale box on the right hand side. My apologies for my inattention to basic details.
Frank
 
Ronald

Ronald

Resource contributor
Messages
974
Don't worry Frank, we are all here to help each-other. That is one of the main reasons why I have created the Krispy Blender2FSX video transcripts,
to capture those essential details on paper, so that everyone can re-read them, after having seen the video.
Does everything work now?

TIP: This Blender Shortcut key maps/articles will help you master Blender faster and more efficiently:
- http://thilakanathanstudios.com/2015/09/blender-keyboard-shortcuts/
- https://www.katsbits.com/tutorials/blender/useful-keyboard-shortcuts.php
- http://www.dummies.com/web-design-development/blender/blender-for-dummies-cheat-sheet/
 
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