Well it's been nearly 2 months since the last update, but things are still moving, just a little slower...
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Main airframe pretty much together. Base red on cowl completed... Needed lots of coats! The blue diamonds of the 356th FG will be added by decals. Much quicker and more accurate than painting! -
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The identification numbers and letters on one side... Took me a long time to settle on the exact aircraft I wanted to model. Diamonds yet to be added to cowling.
Next set of pictures!
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The P-51 had a laminar wing, where the panel lines on the front half of the wing were putty filled to improve airflow. If I'd come across the article earlier, my panel lines would be filled under the glass cloth, not on top, but never mind! -
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Completed speaker box in situ, one speaker on each side. Amp will be attached to a plate on the front end of this speaker box, so as to be in the front of the airflow coming though the fuselage. -
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Speakers wired and screwed into enclosures. The whole assembly then just slots into the recess cut into the fuselage floor. It's such a snug fit with the 'engine' cover replaced, that it won't need to be glued, making changing a speaker easy if needed. -
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Engine cover replaced, speaker box safely inside. You can see the bolt holes in the hardwood tabs here. 2 on each side, which means once this cover is bolted in place, the front fuselage should retain it's original rigidity.
Things seem to have slowed down somewhat with the work on this plane... It's been busy at work for a few weeks, and just don't have the time I would like.
Anyhow... progress is still being made, and I am beginning to get to the stage where I can tick jobs off the list as completed.
As usual, the details are included with the pics.
The video below shows the first test of the gear sequencer. Some of the servo limits will need varying on the transmitter when I get as far as setting up the DX8, but this looks promising!
It's so good to see some decent sized wheels on these wings... why do they put such tiny wheels in as stock? I guess to get away with using cheap retract units (that can't even manage the tiny wheels!)
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Anyhow... progress is still being made, and I am beginning to get to the stage where I can tick jobs off the list as completed.
As usual, the details are included with the pics.
The video below shows the first test of the gear sequencer. Some of the servo limits will need varying on the transmitter when I get as far as setting up the DX8, but this looks promising!
| IMG 0703 (0 min 39 sec) |
It's so good to see some decent sized wheels on these wings... why do they put such tiny wheels in as stock? I guess to get away with using cheap retract units (that can't even manage the tiny wheels!)
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Carved out the bottom of the battery bay to allow room for the speaker enclosure. The section of engine cowling removed allows access to this area. Now has hardwood sockets with bolts to secure it ensuring rigidity of forward fuselage is maintained. -
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Extremely bright LED emitters from Tom Benedini soldered to circuit board and ready for installation in the gun cowling. -
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Would you believe that the spacing of the gun ports exactly matches the spacing of holes used on the circuit board for the LED's? I do seriously wonder if the space left behind the plastic gun cowling was designed in order to allow mods to be added. -
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Completed speaker enclosures, built as one unit. The smaller central section will allow for cabling (and hopefully air) to get past the speaker enclosure to the main section of the battery bay. -
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Test fitting of speaker into enclosure. The 'Stang fuselage is not very wide, so it's not possible to make speaker enclosures with significant volume, but hopefully this will acheive something to re-inforce the sound. -
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Speaker enclosure slotted into carved space shown in earlier picture. Such a snug fit, both into the bottom slot and below the cowling, (once bolted on), that I don't think it'll even need gluing. Makes changing a speaker straightforward.
Next three photos... have actually got further than this.
The whole airframe has now had it's base silver coat, and have masked up the front for the red cowling of the Martlesham Heath 356th FG.
Waiting for laser decal paper now, so that I can start adding some markings. More photos will follow!
Benedini Sound system spec has been agreed and ordered. This includes the LED's for the gun muzzles in the wings.
The whole airframe has now had it's base silver coat, and have masked up the front for the red cowling of the Martlesham Heath 356th FG.
Waiting for laser decal paper now, so that I can start adding some markings. More photos will follow!
Benedini Sound system spec has been agreed and ordered. This includes the LED's for the gun muzzles in the wings.
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Glassing the fuselage. You can see the 'speaker grill' section here. -
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FMS cockpit kit from 'Shapeways'. The FMS 'stang is 56inches wingspan, so these parts are all 10% undersized, but I hope will look close enough. -
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New wing mounting plate in the fuselage. Most nervous moment on the build so far, gluing this in and hoping that it will still match up with the mounting bolts through the wing. Luckily it does!
These last few pictures pretty much get us up to where I am now.
Just a couple of items to do to the fuselage, and all the large scale external modifications are completed.
Then to glass the big pieces and start work on internal stucture to accommodate all the electronics!
Just a couple of items to do to the fuselage, and all the large scale external modifications are completed.
Then to glass the big pieces and start work on internal stucture to accommodate all the electronics!
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1/64 inch plywood facing on wing / fuselage face. I'm doing this to all the contact surfaces on demountable pieces. It protects the foam from being compressed over time as the plane is being assembled and disassembled. -
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stock landing gear plastic cover cut to fit extended gear wire to accommodate larger wheels. Gaps will be filled with milliput epoxy putty. -
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Foam wing root trimmed and replaced with balsa. This matches the plywood piece in the other picture. This balsa section, as well as the leading and trailing edge of the wing joints are then brushed with good old cellulose dope to harden the balsa. -
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At last! A wing ready for glassing. -
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1/64 plywood facing for the matching sides of the wings. Again, all in the name of durability.
It's being a productive week, although these things always take longer than I think they will.
I gave up on the robart wheels. While they are superbly detailed, they are just too heavy. I didn't want to consider changing the retracts. The e-flight 15-25's were expensive enough as it was, and larger retracts capable of lifting the robarts reliably are heavy and over £100. The foam wheels I've found have scale-like hubs and will look pretty good.
Today I completed modifications to the wings amongst other things, allowing me to glass them.
Here's a summary of what's happened this week (See pictures):
I gave up on the robart wheels. While they are superbly detailed, they are just too heavy. I didn't want to consider changing the retracts. The e-flight 15-25's were expensive enough as it was, and larger retracts capable of lifting the robarts reliably are heavy and over £100. The foam wheels I've found have scale-like hubs and will look pretty good.
Today I completed modifications to the wings amongst other things, allowing me to glass them.
Here's a summary of what's happened this week (See pictures):
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Strengthening wire about to be epoxied into elevator -
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Exhaust ports drilled out. -
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Side of fuselge showing holes cut in the area where sound system speakers will be. I probably won't remove the plugs until after I've glassed the fuselage. Hopefully the glass coat will act as a speaker grill without needing to do anything else. -
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Wing tip re-instated from aileron. -
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Wheel in situ with new outer bay door. I gave up on the robart wheels, they are just too heavy. Luckily I found some lightweight foam wheels at 100mm and sanded them down to the 95mm of the robarts. -
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Outer bay door laid flat. Been lucky with steaming the plywood for the bay door... perfect fit to contour of the wing! New wing mounting point also installed.
Well I finished sheeting both wheel bays this afternoon. However I also discovered that the e-flight 15-25 retract units are nowhere near strong enough to lift the robart wheels. That's a major annoyance and now means I need a heftier set of retracts in order to use the larger wheels.
It is quite likely that these new wheels are going to end up costing more than the plane.... grrrrrrrr
It is quite likely that these new wheels are going to end up costing more than the plane.... grrrrrrrr
Another 'taking the plunge' moment is chopping off a chunk of engine cover in order to access a space for the sound system. I've cut off just enough to get the standard speakers used in these installs into place.
I'm slightly bothered about how structural this section is with regards to stiffening the front of the fuselage and stopping it from twisting. I could glue it back on after speaker install, but the speakers have a habit of blowing so it's not an 'install and forget' job. Hopefully just some magnets holding the top on will be enough.
There's not a huge space for a speaker box and something else I need to consider is getting airflow from the cowl back past the speakers to cool the battery and ESC. Not sure about that one yet!
I'm slightly bothered about how structural this section is with regards to stiffening the front of the fuselage and stopping it from twisting. I could glue it back on after speaker install, but the speakers have a habit of blowing so it's not an 'install and forget' job. Hopefully just some magnets holding the top on will be enough.
There's not a huge space for a speaker box and something else I need to consider is getting airflow from the cowl back past the speakers to cool the battery and ESC. Not sure about that one yet!
Well you have to take the bit between the teeth when starting modifications like this. It feels a little un-nerving to buy a 'finished' plane and then start hacking chunks out of it!
The stock wheels are far too small. Scale for this size plane is about 12.5cm, I'm concious of 2 things. a) the more foam you hack out of the wing, the weaker it becomes. b) The only decent 'scale'-like wheels are robarts, and compared with other types of wheel, they're heavy, and even upgrading the retracts, I think 12+cm diameter is just too much weight. Given I want to put a sound system into this plane, I've got to be very careful about weight.
Therefore I decided a 10cm diameter wheel was a good trade off. Hunted down close-up photos of inner gear doors on the full size plane in order to get a close to scale shape. I'm not going to meddle with the retract points. They're too far back, but I'm sure they're in the meat of the wing for a good reason. I think with the larger wheels, and the scale shape inner doors, this is still going to be pretty darn fine landing gear.
This foam cuts really nicely with a very sharp blade. Nice clean edges left afterwards. Still sheeting the new wells though. Just have to decide servo positioning for the inner door mechanism. Notice the inset edge of the well ready for the doors to fit flush.
Will also have to decide on the new location of wing fixing bolt.
On removing the plastic gun fairing on the leading edge, you find a large space behind just right for a circuit board to hold the Machine gun LED's later on. Things like this, and the already seperate radiator hatch in the fuselage leave one with the feeling that the manufacturers are expecting a fair number of people to mod these kits.
The stock wheels are far too small. Scale for this size plane is about 12.5cm, I'm concious of 2 things. a) the more foam you hack out of the wing, the weaker it becomes. b) The only decent 'scale'-like wheels are robarts, and compared with other types of wheel, they're heavy, and even upgrading the retracts, I think 12+cm diameter is just too much weight. Given I want to put a sound system into this plane, I've got to be very careful about weight.
Therefore I decided a 10cm diameter wheel was a good trade off. Hunted down close-up photos of inner gear doors on the full size plane in order to get a close to scale shape. I'm not going to meddle with the retract points. They're too far back, but I'm sure they're in the meat of the wing for a good reason. I think with the larger wheels, and the scale shape inner doors, this is still going to be pretty darn fine landing gear.
This foam cuts really nicely with a very sharp blade. Nice clean edges left afterwards. Still sheeting the new wells though. Just have to decide servo positioning for the inner door mechanism. Notice the inset edge of the well ready for the doors to fit flush.
Will also have to decide on the new location of wing fixing bolt.
On removing the plastic gun fairing on the leading edge, you find a large space behind just right for a circuit board to hold the Machine gun LED's later on. Things like this, and the already seperate radiator hatch in the fuselage leave one with the feeling that the manufacturers are expecting a fair number of people to mod these kits.
List of work
So what am I aiming to do to this plane?
This is just a list of the intended work:
Glass coating the entire airframe to make it much stronger and far more robust.
Adding much closer to scale landing gear, including a full set of 4 doors controlled by sequencer. The sequencer even allows staggered opening and closing of gears, just like the original.
Temperature controlled, and therefore completely automatic, opening and closing of rear radiator hatch to manage engine / battery compartment running temperature.
Sound system incorporating genuine merlin engine recording, with 'on demand' machine gun sound effect.
Machine gun led's mounted in wing ports, synchronised to the sound effect for effective low strafing passes!
Custom paint job including new decals to accurately depict a specific aircraft from the 356th fighter group, stationed at Marltesham Heath, UK, flying P-51D Mustangs from November '44 through to May '45.
This is just a list of the intended work:
Glass coating the entire airframe to make it much stronger and far more robust.
Adding much closer to scale landing gear, including a full set of 4 doors controlled by sequencer. The sequencer even allows staggered opening and closing of gears, just like the original.
Temperature controlled, and therefore completely automatic, opening and closing of rear radiator hatch to manage engine / battery compartment running temperature.
Sound system incorporating genuine merlin engine recording, with 'on demand' machine gun sound effect.
Machine gun led's mounted in wing ports, synchronised to the sound effect for effective low strafing passes!
Custom paint job including new decals to accurately depict a specific aircraft from the 356th fighter group, stationed at Marltesham Heath, UK, flying P-51D Mustangs from November '44 through to May '45.
Complete re-build and upgrade of Starmax P-51 Mustang
Well, I have toyed around with r/c planes since I was a teenager... but with work and all, haven't really seen what's happened in the hobby for 7 years.
So there I am, just harmlessly surfing the net one day, when what should pass in front of my eyes but a page about the new Starmax P-51 Musting, including flight video...
Wow!!! I hadn't realised what you could get for the money... the size, the scale accuracy... the market has really changed in a few years...
Not surprisingly, it wasn't long before I had hit the purchase button. I know the issues this model has, but they didn't bother me anyway, because I knew straight away, I was going to enjoy going to town on this airframe, including loads of extra features and a custom paint job.
It's this last bit that's most exciting to me. Living in Ipswich in the UK, I am just 4 miles from Martlesham Heath, an ex WW2 air base. Now a housing estate, there are a still several signs of the site's past; control tower, a hangar and a few pieces of runway still dotted around.
The 356th FG was stationed at Martlesham from '43 to '45. They flew P-47's until late '44 receiving their Mustang's in November.
So for me there was no hesitation about what I was going to do. Use the Starmax kit, but work extensively on it, adding and improving features, and then painting it up as an exact copy of a specific 356th FG aircraft, with the intention of being able to fly the plane from literally the very same pieces of tarmac that the full size original flew nearly 70 years ago.
Not many people are able to do that.
So there I am, just harmlessly surfing the net one day, when what should pass in front of my eyes but a page about the new Starmax P-51 Musting, including flight video...
Wow!!! I hadn't realised what you could get for the money... the size, the scale accuracy... the market has really changed in a few years...
Not surprisingly, it wasn't long before I had hit the purchase button. I know the issues this model has, but they didn't bother me anyway, because I knew straight away, I was going to enjoy going to town on this airframe, including loads of extra features and a custom paint job.
It's this last bit that's most exciting to me. Living in Ipswich in the UK, I am just 4 miles from Martlesham Heath, an ex WW2 air base. Now a housing estate, there are a still several signs of the site's past; control tower, a hangar and a few pieces of runway still dotted around.
The 356th FG was stationed at Martlesham from '43 to '45. They flew P-47's until late '44 receiving their Mustang's in November.
So for me there was no hesitation about what I was going to do. Use the Starmax kit, but work extensively on it, adding and improving features, and then painting it up as an exact copy of a specific 356th FG aircraft, with the intention of being able to fly the plane from literally the very same pieces of tarmac that the full size original flew nearly 70 years ago.
Not many people are able to do that.

