Glen's 700 series II build

[Gepetto]

Here is a little background
I started my working days as a machinist. Throught this period I built heavy machinery, ships and pulp mills.
I do appreciate good work when I see it!!

So why the rant?
Well I just got a full set of parts from Joe including the new chassis,rev B back plates and rev E control board.
They are so well done I will bow down in respect to his engineering skills. I would be hard pressed the duplicate his work of which I don't say lightly.
Please see the images attached for what we will build in a new thread.

Ps the new back plate fits perfectly in the series two chassis which was to tight in the rev A boards and from the photos you can see the holes aline perfectly at first glance. So don't sell those series ll units short with what Joe's parts can do for them.


View attachment 19044 View attachment 19045 View attachment 19046 View attachment 19047

Hope you enjoy the build Glen, cannot wait to see your photos as it progresses.

 

[laatsch55]

Glen I gotta second that. Just opened the box from Joe I got while in Phoenix. A superior product all the way around. And the cool thing about Joe is ....all feedback is considered and acted on. He only wants to make things better, bless his heart.....thanks Joe!!

 

[laatsch55]

I am glad to tell you
it is one of two left in the world
this is a Martin Mars
the photo is of the one that should go to Pensacola Florida air museum
http://www.navalaviationmuseum.org

it has a wing span that is wider than the 747
it was built in the late 30's and was commissioned to flyer troops later on to Korea
7 were built 5 flew and 2 remain

here is a link to the owners site
they were converted to water bombers
http://www.martinmars.com


my brother in law flew these plane for 30 plus years as water bombers. He retired as chief pilot a few years ago

I have not flown in them but that been able to go through both of the planes stem to stern top to bottom
I will post some photos tonight

The last flying B-24, and a B-17 stopped off in Gillette a few years ago and we were allowed to crawl all over em, and in em. I have a few pics in photobucket under laatsch55. I'll post the rest in a few days...

 

[Gepetto]

The last flying B-24, and a B-17 stopped off in Gillette a few years ago and we were allowed to crawl all over em, and in em. I have a few pics in photobucket under laatsch55. I'll post the rest in a few days...

That is an amazing piece of history to see still flying...

 

[laatsch55]

Yes Joe. Both the B-24 and B-17 were restored to like new condition. I took a lot of pics. When they left they flew around town 3 times then headed out. Nothing like the sound of large radials under load....goose pimple stuff...

 

[Gepetto]

Yes Joe. Both the B-24 and B-17 were restored to like new condition. I took a lot of pics. When they left they flew around town 3 times then headed out. Nothing like the sound of large radials under load....goose pimple stuff...

Talk about hard to find spare parts. I have to believe that every breakdown is an adventure in reverse engineering to make a new replacement part.

 

[laatsch55]

The 17....


I'm thinkin there are probably some spares for the radials, but as far as airframe parts...yeah, I talked to some of the groundcrew that were involved in the restorations and a lot of the parts were fabbed from old blueprints...

 

[nelsress]

Wow!

That baby's beautiful! Extremely nice restoration work and what a cool plane. While I was in the Air Force I had the pleasure of working on some classics but nothing like this. Mostly F-4's, KC-135's, C-130's and T-38's. I've been enjoying this thread and the photos are great, particularly for something this rare. Excellent!

Great job on the chassis and boards too Joe!!

 

[gadget73]

The modern gear looks so out of place in the middle of that panel. Shame you can't run the period correct radio gear anymore. Probably not on the same band anyway, and it likely wouldn't pass for reliability reasons besides.

 

[Gepetto]

The modern gear looks so out of place in the middle of that panel. Shame you can't run the period correct radio gear anymore. Probably not on the same band anyway, and it likely wouldn't pass for reliability reasons besides.

It takes too much power to power the tubes Would be an EPA Energy Star violation.

 

[grapplesaw]

Here are some more photos of the Mars
the one painted in dark blue maybe going to Penacola Florida
this thing I believe is the largest piston driven plane





H

 

[frhodes]

Here are some more photos of the Mars
the one painted in dark blue maybe going to Penacola Florida
this thing I believe is the largest piston driven plane





View attachment 19118 View attachment 19119 View attachment 19120 View attachment 19121 H

I believe The Spruce Goose would be number 1 and the B29 Stratofortress number 2 in piston power.

 

[grapplesaw]

I believe The Spruce Goose would be number 1 and the B29 Stratofortress number 2 in piston power.

I stand corrected
These are both still flying

 

[grapplesaw]

I believe The Spruce Goose would be number 1 and the B29 Stratofortress number 2 in piston power.

B29 spec

• Crew: 11 (Pilot, Co-pilot, Bombardier, Flight Engineer, Navigator, Radio Operator, Radar Observer, Right Gunner, Left Gunner, Central Fire Control, Tail Gunner)
• Length: 99 ft 0 in (30.18 m)
• Wingspan: 141 ft 3 in (43.06 m)
• Height: 27 ft 9 in (8.45 m)
• Wing area: 1,736 sq ft (161.3 m²)
• Aspect ratio: 11.50:1
• Empty weight: 74,500 lb (33,800 kg)
• Loaded weight: 120,000 lb (54,000 kg)
• Max. takeoff weight: 133,500 lb (60,560 kg) ; 135,000 lb plus combat load
• Powerplant: 4 × Wright R-3350-23 and 23A Duplex Cyclone turbosupercharged radial engines, 2,200 hp (1,640 kW) each
• Zero-lift drag coefficient: 0.0241
• Drag area: 41.16 ft² (3.82 m²)

Performance

• Maximum speed: 357 mph (310 knots, 574 km/h)
• Cruise speed: 220 mph (190 knots, 350 km/h)
• Stall speed: 105 mph (91 knots, 170 km/h)
• Range: 3,250 mi (2,820 nmi, 5,230 km)
• Ferry range: 5,600 mi (4,900 nmi, 9,000 km, [SUP][63][/SUP])
• Service ceiling: 31850 ft [SUP][21][/SUP] (9,710 m)
• Rate of climb: 900 ft/min (4.6 m/s)
• Wing loading: 69.12 lb/sqft (337 kg/m²)
• Power/mass: 0.073 hp/lb (121 W/kg)
  
• Lift-to-drag ratio: 16.8

 

[grapplesaw]

I believe The Spruce Goose would be number 1 and the B29 Stratofortress number 2 in piston power.

Martin Mars spec

<big style="margin: 0px; padding: 0px; border: 0px; font-family: inherit; font-size: inherit; font-style: inherit; font-variant: inherit; line-height: inherit; vertical-align: baseline; background-image: none; box-sizing: border-box;">General characteristics</big>

• Crew: four (with accommodations for a second relief crew)
• Capacity: JRM Mars - 133 troops, or 84 litter patients and 25 attendants or 32,000 lb (15,000 kg) payload, including up to seven Willys MB jeeps
• Water/foam load: Mars waterbomber - 60,000 lb (27,000 kg)
• Length: 117 ft 3 in (35.74 m)
• Wingspan: 200 ft 0 in (60.96 m)
• Width: 13 ft 6 in (4.11 m) Hull beam
• Height: 38 ft 5 in (11.71 m) afloat, 48 ft (15 m) beached
• Hull draught: 5 ft 6 in (1.68 m)
• Wing area: 3,686 sq ft (342.4 m[SUP]2[/SUP])
• Empty weight: 75,573 lb (34,279 kg)
• Gross weight: 90,000 lb (40,823 kg)
• Max takeoff weight: 165,000 lb (74,843 kg)
• Fuel capacity: Hawaii Mars: 6,485 US gal (24,550 l; 5,400 imp gal) Philippine Mars: 13,200 US gal (50,000 l; 11,000 imp gal)
• Powerplant: 4 × Wright R-3350-24WA Duplex Cyclone 18-cylinder radial engines, 2,500 hp (1,900 kW) each
• Propellers: 4-bladed Curtiss Electric, 15 ft 2 in (4.62 m) diameter variable-pitch propellers

<b style="margin: 0px; padding: 0px; border: 0px; font-family: inherit; font-size: inherit; font-style: inherit; font-variant: inherit; line-height: inherit; vertical-align: baseline; background-image: none; box-sizing: border-box;"><big style="margin: 0px; padding: 0px; border: 0px; font-family: inherit; font-size: inherit; font-style: inherit; font-variant: inherit; line-height: inherit; vertical-align: baseline; background-image: none; box-sizing: border-box;">Performance</big></b>

• Maximum speed: 221 mph (356 km/h; 192 kn)
• Cruise speed: 190 mph (165 kn; 306 km/h)
• Range: 4,948 mi; 7,964 km (4,300 nmi)
• Service ceiling: 14,600 ft (4,450 m)
• Drop speed: 138 mph (120 kn; 222 km/h)
• Landing approach speed: 115 mph (100 kn; 185 km/h)
• Touchdown speed: 92 mph (80 kn; 148 km/h)
• Fuel consumption (cruise): 420 US gal (1,600 l; 350 imp gal) per hour
• Fuel consumption (operations): 780 US gal (3,000 l; 650 imp gal) per hour
• Operations duration (normal): 5 1/2 hours
• Area covered, single drop: 3 to 4 acres (1.2 to 1.6 ha)
• Drop height: 150 to 200 ft (46 to 61 m)
• Full water tank load: 7,200 US gal (27,000 l; 6,000 imp gal

 

[grapplesaw]

I believe The Spruce Goose would be number 1 and the B29 Stratofortress number 2 in piston power.

Spruce goose spec

General characteristics

• Crew: three
• Length: 218 ft 8 in (66.65 m)
• Wingspan: 320 ft 11 in (97.54 m)
• Height: 79 ft 4 in (24.18 m)
• Fuselage height: 30 ft (9.1 m)
• Empty weight: 250,000 lb (113,399 kg)
• Loaded weight: 400,000 lb (180,000 kg)
• Powerplant: 8 × Pratt & Whitney R-4360 Wasp Major radial engines, 3,000 hp (2,640 kW) each
• Propellers: four-bladed Hamilton Standard, prop, one per engine
  
  • Propeller diameter: 17 ft 2 in (5.23 m)

Performance

• Cruise speed: 250 mph (407.98 km/h)
• Range: 3,000 mi (4,800 km)
• Service ceiling: 20,900 ft (6,370 m)

 

[grapplesaw]

So the Spruce Goose is the largest and it did fly once. The Mars is bigger than the b-29 and used the same power plant that was hopped up. The engine life on the Mars is extremely low.

I have been in a boat under the wing of the Mars while it taxied at about 30 knots on Sproat Lake Vancouver Island . This were they live

 

[Northwinds]

Talk about a most excellent thread derail. I have been reading about the various version of the B-52 lately. I love how they can land near sideways

 

[grapplesaw]

Talk about a most excellent thread derail. I have been reading about the various version of the B-52 lately. I love how they can land near sideways

What are you going do while waiting for parts?

Check these videos out out of the Mars

https://m.youtube.com/watch?v=tF1mBxDEOh0

https://m.youtube.com/user/CoulsonGroup

 

[laatsch55]

Cool links Glen, thanks!!