Martin Mars XPB2M-1R Scratchbuild - 1943-123 inch Wingspan
Posted: Sun Feb 19, 2012 1:42 am
Hello,
I started a new Build Log for my new plane the Martin Mars XPB2M - 1R and 2 version
I have 3 days into the build and have the slab side framing done now. I have the V formers and turtle back to do next. I will post updates here as I go along with notable parts in progress. For the most part it is in the RC Groups - Waterplanes forum. All the pictures, drawings and info is there alongwith subscribers comments.
http://www.rcgroups.com/forums/showthre ... st20789781
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Martin XPB2M-1 Mars 1943- Scratchbuild
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I have started the new build of the early version of the Martin Mars that had the twin rudder. I have the fuselage framing started. I am basing the model on Ivan Pettigrews plans.
You can contact Ivan by emailing him. Here is his email address:
ivanp@dowco.com
Scale 1/20
Wingspan: 120 Inches
Length: 72 Inches
AUW: 13 pounds. as I estimate.
Wing Area: 1515 sq. in.
Wing Loading: 15.7 oz/sq. ft.
Airfoil: Eppler 197 with NACA with washout built in on outboard wing sections.
Power: Hex DT-750 brushless. MAS 10x7 with opposite rotations Nanotech 4s 5000Mah 14.8v Lipolys
The model will not be true scale as there are modifications on the plans that are not exact. I am going to divert from the plans some to use a mix of Depron foam and wood with some carbon fiber also I am first going to upload some pictures and drawings and maybe some notes of this version Mars.
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First off. There is another thread building the same plane in the JRM format by Rudderman a few years back. It is a very good build log if you follow Ivan's plans closely. As I mentioned I will follow some what closely. My plane will probably be slightly heavier. I am deiviating with different building materials here.
http://www.rcgroups.com/forums/showt...ght=ivan+plans
New Update: Mars XPB2M-1R Original Footage Found 1-2013
http://www.youtube.com/watch?feature=pl ... 22F9O3A0EM
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Update:
My Mars has been Maidened and took Part in the 5th Annual Nicolaci Floatfly Event Sept 6-7, 2013
Go to Page #7 to see the 2 videos posted.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The framing was started with some fresh cut clear hard pine wood. I cut strips from 1/4inch thick pieces in 3 sizes. 1/4x1/4, 1/4x3/16, and 1/4x1/8th inches. Most framing was laid out with 1/4 square along the bottom longerons. The rest is mostly 1/4x 3/16inch. I used 1/8th inch balsa reaching above the waterline. Progress went along good for the 2 days here.
**Neons** Bob
I started a new Build Log for my new plane the Martin Mars XPB2M - 1R and 2 version
I have 3 days into the build and have the slab side framing done now. I have the V formers and turtle back to do next. I will post updates here as I go along with notable parts in progress. For the most part it is in the RC Groups - Waterplanes forum. All the pictures, drawings and info is there alongwith subscribers comments.
http://www.rcgroups.com/forums/showthre ... st20789781
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Martin XPB2M-1 Mars 1943- Scratchbuild
--------------------------------------------------------------------------------
I have started the new build of the early version of the Martin Mars that had the twin rudder. I have the fuselage framing started. I am basing the model on Ivan Pettigrews plans.
You can contact Ivan by emailing him. Here is his email address:
ivanp@dowco.com
Scale 1/20
Wingspan: 120 Inches
Length: 72 Inches
AUW: 13 pounds. as I estimate.
Wing Area: 1515 sq. in.
Wing Loading: 15.7 oz/sq. ft.
Airfoil: Eppler 197 with NACA with washout built in on outboard wing sections.
Power: Hex DT-750 brushless. MAS 10x7 with opposite rotations Nanotech 4s 5000Mah 14.8v Lipolys
The model will not be true scale as there are modifications on the plans that are not exact. I am going to divert from the plans some to use a mix of Depron foam and wood with some carbon fiber also I am first going to upload some pictures and drawings and maybe some notes of this version Mars.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
First off. There is another thread building the same plane in the JRM format by Rudderman a few years back. It is a very good build log if you follow Ivan's plans closely. As I mentioned I will follow some what closely. My plane will probably be slightly heavier. I am deiviating with different building materials here.
http://www.rcgroups.com/forums/showt...ght=ivan+plans
New Update: Mars XPB2M-1R Original Footage Found 1-2013
http://www.youtube.com/watch?feature=pl ... 22F9O3A0EM
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Update:
My Mars has been Maidened and took Part in the 5th Annual Nicolaci Floatfly Event Sept 6-7, 2013
Go to Page #7 to see the 2 videos posted.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The framing was started with some fresh cut clear hard pine wood. I cut strips from 1/4inch thick pieces in 3 sizes. 1/4x1/4, 1/4x3/16, and 1/4x1/8th inches. Most framing was laid out with 1/4 square along the bottom longerons. The rest is mostly 1/4x 3/16inch. I used 1/8th inch balsa reaching above the waterline. Progress went along good for the 2 days here.
**Neons** Bob