IVAN'S PLANS

NOTICE - (20 December 2018): Ivan is pleased to announce that he has recently partnered with Flying Aces Press to fulfill his plan orders though the Flying Models Plans Service (FMPS).

This partnership means an immediate resumption of shipping for orders during this building season. It also allows Ivan more time for designing, building and flying his models, as well as providing convenient on-line ordering. The descriptions below have links that will take you directly to the FMPS listings.

These are construction plans for electric-powered, Radio Control model airplanes designed and built by Ivan Pettigrew. The plans are hand drawn with sufficient details for modelers with previous building experience, and include Ivan's written construction notes. The models are built mostly of balsa, using traditional construction methods.

In recent years, Chilliwack, British Columbia - near Canada's West Coast - has become the Pacific Northwest's "mecca" for electric model airplanes. Ivan was one of the prime movers for this trend, having designed his first electric model in the early nineties. Most of these models originally used racing car motors of the "05" class (equivalent to Speed 600 size.) These models are larger than most other model aircraft that use the same power packages, but they fly very well on low power because of their light construction and low wing loadings, and come close to scale-like flight appearance. Flight times of Ivan's prototypes vary from 7 to 15 minutes using Sanyo 1900mAh nicads.

The descriptions and specifications for most of the models were written before Lithium Polymer (LiPo) batteries came into widespread use. With LiPo batteries, the weight and wing loading of the models will be lower than the figures shown, and performance will be enhanced. Where a 9-cell pack was originally used, a 3S LiPo battery should be used, preferably of larger capacity. Flight times will be considerably longer, not only because of extra battery capacity, but also due to the weight savings realized.


Read articles by Ivan on the following topics: (click on the topic underlined in blue)

NEW! Flying from Water: Great Fun! - Things that all RC float fliers should know, revised and updated Summer 2018.

Multi Engine Electric Models - Electrics lend themselves to great multis.

Model Specs - Detailed specs on the models listed. Gear ratios, props, batteries used, and more. Read an update on the use of Speed 480 motors in the multi-motor models such as the Albatross. Flight time has increased considerably. Also notes on the use of LiPo batteries and brushless motors.

Ivan Pettigrew Models - Forum discussion of all things Ivan on RCGroups.


Ordering
Ivan's plans are now available exclusively through the Flying Models Plans Service. The links below each description will open the FMPS listing for each plan in a new browser tab.

Plans shipped to US addresses will now be sent rolled via Priority Mail. Non-US orders will be shipped folded, as before. The Flying Models web site only offers Priority Mail service at this time. Please use their "Contact Us" form to discuss other options for orders outside the US, or with any other questions.

Flying Models offers a second set of any plan for half price when when included in the original order, allowing you to cut up one set for templates.

And finally, several of Ivan's models were originally drawn on multiple 24x36-inch sheets, requiring a bit of tape and care to assemble a working plan. Flying Models has now combined these component drawings onto larger single sheets for your convenience.

Website Last Updated: (20 December 2018)


The Collection
Click for any listing, or scroll to see them all.

Auster J5F Aiglet Avro Lancaster Blackburn Beverley Bristol Beaufighter
Bristol Freighter DH86 Express DH88 Comet DH89 Rapide
DH90 Dragonfly DH98 Mosquito 480 DH98 Mosquito 600 DHC-1 Chipmunk
DHC-6 Twin Otter 480 DHC-6 Twin Otter 600 Druine Turbulent 50 Grumman Albatross
Helio Courier Lakemaster Martin Mars Partenavia
PBY-5A MiniCat PBY-5A Catalina 600 Pearse Monoplane 370 Pearse Monoplane 600
Seagull Shoestring 58 Shoestring 62 Short Sealand 480
Short Sealand 600 Short Solent 400 Short Solent 480 SIA KZ-IV

You may click any of the images for a larger view.
To return to this page, simply close the new window or tab that opens with the larger image.

Additional information, and videos of Ivan's models in action


AUSTER J5F AIGLET TRAINER
1950s British trainer and touring aircraft

Scale: 1:5
Span: 75 in
Length: 52 in
Wing Area: 850 sq in
Weight: 72 oz, with 9 N-1900 SCR nicads
Wing Loading: 12.2 oz/sq ft

Fully aerobatic. Flies on wheels, floats and skis. Plan shows wheels only. Built 1997.

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AVRO LANCASTER
British four-engined heavy bomber OF WWII

Scale: 1:12
Span: 103 in
Length: 70 in
Wing Area: 1,300 sq in
Weight: 203 oz, with 18 N-1900 SCR nicads
Wing Loading: 22.4 oz/sq ft

Features retracts and flaps. Built 1996.

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BLACKBURN BEVERLEY 600
1950s RAF heavy transport aircraft

Scale: 1:15.6
Span: 125 in
Wing Area: 1,700 sq in
Length: 77 in
Weight: 164 oz with 6S 2800mAh LiPo
Wing Loading: 13.9 oz/sq ft

Four Speed 600 (Mabuchi 550) can motors wired series-parallel, with 3.5:1 Master Airscrew reduction gearboxes, turn 10x6 four blade props at 6,500 RPM. Static thrust is 110 ounces at 32 amps (16 amps to each motor). Selig 7055 airfoil with NACA leading edge cuff on outboard sections. Slotted flaps. Wing built in three sections. The nose section of the fuselage is removable to give access to the battery and make adjustments to the nose wheel mounting, as well as reducing the size of the fuselage for transportation. The tail plane and main landing gear are also removable. August 2007.

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BRISTOL BEAUFIGHTER
WWII British heavy fighter / strike aircraft

Scale: 1:10
Span: 73 in
Wing Area: 765 sq in
Length: 51 in
Weight: 124 oz with 18 N-1900 SCR nicads
Wing Loading: 23.4 oz/sq ft

Retracts and optional flaps. Does impressive aerobatics. Built in 1999, based on smaller version built 1993.

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BRISTOL FREIGHTER / WAYFARER
Aerial ferry / passenger airliner

Scale: 1:12
Span: 108 in
Length: 71 in
Wing Area: 1,480 sq in
Weight: 157 oz, with 16 N-1900 SCR nicads
Wing Loading: 15.2 oz/sq ft

Eppler 197 airfoil with NACA leading edge cuff outboard. Three section wing for ease of transportation. Sturdy fixed undercarriage is good for rough grass strips. Slotted flaps to Andy Lenon formulae are very effective. Prototype is powered by Kyosho 17-turn Atomic Force car motors driving four-blade 15x10 Zinger wood props through 7.2:1 ratio super box. Built 2000.

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DE HAVILLAND DH86 EXPRESS
Four-engine passenger biplane

Scale: 1:7.9
Span: 98 in
Wing Area: 1,507 sq in
Length: 71 inches,
Weight: 114 oz with 6S 2800 LiPo
Wing Loading: 13.5 oz/sq ft*

Four Jamara 480 HS BB motors are used, wired series-parallel, driving 10x7 APC-E props through 4.1:1 ratio gearboxes. Static Thrust is 76 ounces at 6,200 RPM drawing 26 amps from the battery. (13 amps each motor.) The wings have a very high aspect ratio. Efficiency comes from using the thin Selig 3021 airfoil, modified towards the tips, but as in sailplanes, it makes for a challenge in accurate construction. Removable outer wing panels are optional, but demand good workmanship because of the thin airfoil used. Likewise, the undercarriage is a tight fit in the fairings, but they add to the streamlining of the model. The torsion bar suspension used on the main gear gives very good operation on rough fields. Flight characteristics are excellent. A safe, easy to fly model. August 2008.

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DE HAVILLAND DH88 COMET
De Havilland's iconic air racer, and purpose-built winner of the 1934 England-Australia MacRobertson Air Race

Scale: 1:6.6
Span: 80 in
Length: 54 in
Wing Area: 750 sq in
Weight: 108 oz, with 18 N-1900 SCR nicads
Wing Loading: 20.7 oz/sq ft

NACA leading edge cuff on outboard wing section controls tip stall and makes this a safe flyer capable of doing impressive aerobatics. Has retracts. Two models built, 1995 and 2000.

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DE HAVILLAND DH89 RAPIDE
De Havilland's 1930s twin engine utility biplane

Scale: 1:7.6
Span: 76 in
Length: 56 in
Wing Area: 1,100 sq in
Weight: 97 oz, with 9 N-1900 SCR nicads
Wing Loading: 12.8 oz/sq ft

Plans include details for traditional wheeled undercarriage. The float installation is not shown on the plans, but should not challenge a clever modeler. Built 1994

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DE HAVILLAND DH90 DRAGONFLY
British twin-engined luxury touring biplane by De Havilland

Scale: 1:7
Span: 74 in upper wing, 66 lower wing
Wing Area: 1,026 sq in (80% biplane equivalent is 820 sq in)
Length: 54 in
Weight: 78 oz
Wing Loading: 13.7 oz/sq ft*

Primary airfoil; Selig 3010 modified towards the tips. Motors, brushless 450 or 480. Battery, one 3S 3600mAh LiPo. (Or one 4S 3000mAh LiPo, depending on motor choice.) August 2012

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DE HAVILLAND DH98 MOSQUITO 480
Britain's legendary WWII twin-engine fighter

Scale: 1:11.2
Span: 58 in
Wing Area: 501 sq in
Length: 43¼ in
Weight: 55 oz with 4S 2200mAh LiPo battery
Wing Loading: 15.8 oz/sq ft

Eppler 374 airfoil with NACA leading edge cuff outboard. Prototype uses Ram Tech 28/30/16 motors, 700Kv turning 10x7 APC electric props at 7,200 RPM. Total static current draw for two motors is 22 amps giving 52 ounces thrust. Servoless electric retracts are Hobby King HKD-312. (2011)

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DE HAVILLAND DH98 MOSQUITO 600
British twin-engine multi-role combat aircraft

Scale: 1:9
Span: 74 in
Length: 55 in
Wing Area: 825 sq in
Weight: 113 oz with 18 N-1900 SCR nicads
Wing Loading: 19.7 oz/sq ft

Retracts. Very good aerobatics. For good visibility it is done in the colours of the T-III trainer version. Built 2000.

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DE HAVILLAND DHC-1 CHIPMUNK
De Havilland Canada's postwar military trainer

Scale: 1:5.6
Span: 75 in
Length: 55 in
Wing Area: 820 sq in
Weight: 83 oz, with 9 N-1900 SCR nicads
Wing Loading: 14.6 oz/sq ft

Ivan reproduces the first offering from de Havilland Canada. The light airframe offers practical sport scale performance suitable for most builders and pilots. Built 1998.

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DE HAVILLAND DHC-6 TWIN OTTER 480
Twin-engine STOL utility aircraft by De Havilland Canada

Scale: 1:12
Span: 67 in
Wing Area: 612 sq in
Length: 52 in.
Weight: 55 oz, approx.
Wing Loading: under 14 oz/sq ft, depending on motors and batteries.

DE HAVILLAND DHC-6 TWIN OTTER 600
As above, just a little bigger

Scale: 1:9
Span: 84 in
Wing Area: 956 sq in
Length: 65 in
Weight: 100 oz with nine N-1900 SCR nicads
Wing Loading: 15.0 oz/sq ft

Optional flaps. A very safe flyer. Maiden flight May 2005. The prototype uses "05" racing car motors. The smaller plan above uses Speed 480 motors.

NOTE: Thanks to some modelers on RCGroups, there are laser "cut files" available for both these planes:

480 Laser Cut Files ssssssssssssssssss600 Laser Cut Files

Manzano Laser Works can also provide laser cut parts for both of these designs. Please click here for their pricing.

Download Twin Otter 480 Notes - Order Plans
Download Twin Otter 600 Notes - Order Plans
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DRUINE TURBULENT
Popular French single seat homebuilt

Scale: 1:5
Span: 50.3 in
Wing Area: 406 sq in
Length: 40 in
Weight: 28.2 oz
Wing Loading: 10 oz/sq ft

Park 450 890kV motor, 10x7 APC-E prop, 3S 1600mAh LiPo. The simple design of this popular homebuilt lends itself well to an easy-building model, making it a good choice for the first time plans builder. It is very stable with generous dihedral, and a great aileron trainer. The thin airfoil and light wing loading give a slow flat glide, and an easy transition to flare and a soft touchdown. It is also quite aerobatic. A Park 400 motor is quite adequate for anything but aggressive aerobatics. The Park 450 takes it pretty well vertical. Two earlier Turbulent designs were periodically flown on floats, proving the design to be very suitable for water flying. August 2016

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GRUMMAN ALBATROSS
Amphibious flying boat designed for open-ocean search and rescue work

Scale: 1:14
Span: 84 in
Wing Area: 945 sq in
Length: 62 in
Weight: 93 oz with nine N-1900 SCR nicads
Wing Loading: 14.2 oz/sq ft

Maiden flight Dec 28, 2004. In Sept 2005 the motors were changed from "05" racing car motors to Speed 480. Flight time increased considerably. Twenty eight minutes on an 8-cell 3000 NiMH battery.

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HELIO COURIER
STOL utility aircraft

Scale: 1:8.8
Span: 53 in
Wing Area: 436 sq in
Length: 37 in
Weight: 10.3 oz
Wing Loading: 3.6 oz/sq ft

This is an oversize indoor slow flyer, that can also be flown outside in calm conditions. Original model was powered with a geared GWS A motor, now has a tiny brushless which will fly it nearly an hour on a small 2C LiPo packs. The full scale Helio offers exceptional performance from unprepared rough terrain or on floats, making it popular with military and civilian bush pilots alike.

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LAKEMASTER
Non-scale, sport flying boat

Span: 53 in with optional tips
Wing Area: 410 sq in
Length: 39 in
Weight: 25 oz
Wing Loading: 9.5 oz/sq ft

A slightly smaller version of Ivan's earlier Seagull design. Plan shows both a 48-inch span with square tips, as well as optional, and easily added, curved tip extensions that stretch span to 53 inches. Park 300 or equivalent motor with 8x4 or 8x6 prop and 3S 1300mAh LiPo Battery. August 2015.

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MARTIN MARS
Largest Allied flying boat of WWII and post-war firefighting water bomber

Scale: 1:20
Span: 120 in
Length: 72 in
Wing Area: 1,515 sq in
Weight: 165 oz, with 18 N-1900 SCR nicads
Wing Loading: 15.7 oz/sq ft

Built 2001. Update: June 2006. The four original Speed 600 motors have been changed for Jamara 480 HS BB with 4.1:1 MP Jet gearboxes. Performance remains adequate. Landing speed is slower and flight time is longer because of weight saving.

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PARTENAVIA P-68 VICTOR
Italian utility aircraft for business, transport and training

Scale: 1:6.6
Span: 70 in
Wing Area: 730 sq in
Length: 56 1/2 in
Weight: 77 oz with 9 N-1900 SCR nicads
Wing Loading: 15.2 oz/sq ft

Designed to be an entry level multi. Very easy to build with rectangular wing and box type fuselage construction. Very aerobatic and safe to fly. Built 2004.

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PBY-5A CATALINA "MINI-CAT"
WWII-era amphibious flying boat

Scale: 1:15
Span: 83 in
Wing Area: 835 sq in
Length: 52 in
Weight: 64 oz with eight CP-1900 SCR nicads
Wing Loading: 11 oz/sq ft

A smaller version of the PBY-5 listed below. Uses two GWS Speed 400 geared motors running parallel from an 8-cell battery. Flies 27 min on eight cell 3000 NiMH. Built 2004.

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PBY-5A CATALINA 600
WWII-era amphibious flying boat

Scale: 1:12.5
Span: 100 in
Length: 63 in
Wing Area: 1,350 sq in
Weight: 147 oz with 16 N-1900 SCR nicads
Wing Loading: 15.7 oz/sq ft

Has retracts for both undercarriage and wing tip floats. Built 1999. Slightly larger than the later MiniCat, shown above.

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RICHARD III
Early New Zealand flyer

Scale: 1:4
Span: 36 in
Wing Area: 432 sq in
Length: 20 in
Weight: 14 oz with 9 CP-1700 SCR nicads
Wing Loading: 6.2 oz/sq ft

This aerobatic park flyer is a model of the first plane built by New Zealand inventor Richard Pearse, and claimed by historians to have flown in March, 1903. Prototype powered by a GWS EPS-300C-AS (Speed 370) with 3.75:1 reduction, 8x6 APC slow flyer prop. 8-cell 720 NiMH pack. 5,000 rpm static at 7.5 amps. Built in 2002. (photos of larger 60-in model, see listing below)

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RICHARD PEARSE MONOPLANE 600
Early New Zealand flyer

Scale: 1:4
Span: 60 in
Wing Area: 1,200 sq in
Length: 35 in
Weight: 60 oz with 9 CP-1700 SCR nicads
Wing Loading: 7.2 oz/sq ft

This is a quarter scale model of the historic first plane built by by New Zealand inventor Richard Pearse, and claimed by historians to have flown on March 31, 1903. This model is a reliable flyer, and very aerobatic. A smaller model is also available for a Speed 370 motor, see above. Built in 2003.

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SEAGULL
Non-scale sport flying boat

Span: 60 in
Wing Area: 550 sq in
Length: 48 in
Weight: 55 oz, with 9 N-1900 SCR nicads
Wing Loading: 14.5 oz/sq ft

Quick building and easy flying sport flying boat, capable of 30 splash & goes per flight. Ivan's original Seagull has made an estimated 13,000 water landings since its first flight in 1994, and is still flying.

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SHOESTRING 58
Rod Kriemendahl's 1949 Formula 1 Racer

Scale: 1:4.6
Span: 58 in
Wing Area: 500 sq in
Length: 46 in.
Weight: 56 oz with 9 N-1900 SCR nicads
Wing Loading: 16.1 oz/sq ft

Smooth flying and good on floats. Great aileron trainer. Eppler 374 airfoil. Magnetic Mayhem 22 turn motor with 3.0:1 ratio gearbox driving 12x10 APC-E prop at 5,000 RPM draws 28 amps static. Very fast and aerobatic, especially with 3S LiPo battery. Also available at 62 in span, see below (2001).

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SHOESTRING 62
Rod Kriemendahl's 1949 Formula 1 Racer

Scale: 1:4.6
Span: 62 in.
Wing Area: 640 sq in
Length: 49 in
Weight: 67 oz with 9 N-1900 SCR nicads
Wing Loading: 15 oz/sq ft

The Eppler 374 airfoil and a light wing loading make this a great aileron trainer, and good for relaxing aerobatics. Prototype used an Atomic Force 17T Motor with Great Planes GD-600 3.8:1 ratio gearbox turns an 11x7 APC-E airscrew at 7,500 RPM. Static thrust is 34 oz at 30 amps. Built 1997.

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SHORT SEALAND 480
Light Commercial and Military Amphib

Scale: 1:9.5
Span: 74 1/2 in.
Wing Area: 695 sq in
Length: 53in
Weight: 60 oz with 8 CP-1700 SCR nicads
Wing Loading: 12.6 oz/sq ft

A scaled down version of the Sealand 600. Uses Speed 480 or Long Can Speed 400 motors. Flight time with 8 3000mAh NiMH cells is 32 minutes. A hot performer. Built 2005.

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SHORT SEALAND 600
Light commercial and military amphib

Scale: 1:9.5
Span: 75 in
Length: 58 in
Wing Area: 830 sq in
Weight: 90 ounces, with 9 N-1900 SCR nicads
Wing Loading: 15.6 oz/sq ft

Has removable wheels for land operation. Built 2002.

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SHORT SOLENT 400
Post-war passenger flying boat

Scale: 1:16.5
Span: 82 in
Wing Area: 905 sq in
Length: 65 in
Weight: 83 oz with 8 N-1900 SCR nicads Wing Loading: 13.2 oz/sq ft

A large, graceful flying boat. Prototype used four GWS Speed 400 geared motors. Flies over 15 minutes on 3000mAh NiMH cells. Built 2004.

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SHORT SOLENT 480
Post-war passenger flying boat

Scale: 1:14
Span: 99 in
Wing Area: 1,200 sq. in
Length: 73.5 in
Weight: 124 oz with 10 2,600 NiMH cells
Wing Loading: 14.9 oz/sq ft

A larger version of Short Solent 400 above. Four Permax 480 motors wired parallel. MP-Jet Speed 400 gearboxes with 4.1:1 reduction drive 10x7 four blade props. Static current is 38 amps giving thrust of 60 ounces at 4,600 RPM. Selig 7055 airfoil with NACA leading edge cuff on outboard sections. Flies on 10 to 12 nicads (3S or 4S LiPo cells). Ivan's all time favourite flying boat. August 2006.

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SAI KZ-IV
Danish air ambulance

Scale: 1:7.8
Span: 80 in
Wing Area: 765 sq in
Length: 48 in
Weight: 68 oz (with nine CP-1700 SCR nicads)
Wing Loading: 12.8 oz/sq ft

Selig 7055 airfoil with NACA leading edge cuff on outboard section. Flies on eight or nine cells. Two Jamara Pro 480 HS BB motors wired parallel. MP-Jet Speed 400 gear boxes, 4.1:1 ratio drive 10x7 APC electric props. Static current draw with nine cells is 26 amps (13A each motor) giving 38 ounces thrust at 6,200 RPM. The KZ-IV is a lively performer and is quite aerobatic. A very safe, spin-proof flyer. March 2006.

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The wings for the Lancaster, Catalina PBY-5A, Freighter, Mars, Solent 480, Beverley, and Express are built in three sections for ease of transportation.

* - allowing for 80% efficiency of biplane wings.


Links

Manzano Laser Works currently offers laser cut parts for Ivan's Twin Otter in both 480 & 600 versions: Manzano Laser - Twin Otter page

To view models built from Ivan's plans, visit Luke Middleton's thread: Ivan Pettigrew Planes - Build Threads and Videos

This next link is a continuation of the above, now maintained by Sopwith Mike: Ivan Pettigrew Models second thread

The British have an Ivan fan club, click here to read all about it: British Ivan Model Builders Organization (BIMBO) Flyers

Sam and Beverly "Tracon" are a couple well-known for their RC photography. They have taken
excellent photos of the Chilliwack fly-in for several years, and share them on their web site here: Team Tracon

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Videos

DH Express and Blackburn Beverley, May 2012 - Karl Kethler

Mosquito 480, August 2011 - halsask

Ivan's DH Express, Chilliwack 2012 - Sopwith Mike

Beverley Tests, Sept 2007 - filmed and edited by Hal Norrish

Solent 480 Tests, June 2007 - filmed and edited with music by Hal Norrish

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Thank you for visiting "Ivan's Plans."

Ivan Pettigrew with his Solent 400
Chilliwack Fly-In, May 2004.