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Water Ranger ( 100.8 in. / 256 cm ) new

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This is the Water Ranger listing page, here you can download the plan, article and see the main thumbnail and extra images.

Water Ranger model airplane plan

Water Ranger

FMT's Water Ranger

This plan spent almost 40 years in my box. This is a really beautiful one - hope to meet some of them flying. In any case it's on my list-to-build in the near future.
Printing on two A1 sheets gives a wingspan of ca 170 cm and requires two .25 engines (4 ccm). In my opinion, these days electric motors should be considered.
However all measures given in the description relate to the plans printed on two A0 sheets, which will result in a wingspan of 256 cm. In this case two .40 engines (6.5 ccm) should be used.
When building the smaller version, you have to take 2/3 of any given measure - or take them directly from the plan. The article itself is in German.


Thanks for sharing, its a nice plan!

The PDF was very large at aproximately 278% scale. I scaled it down to its original size of 256cm span. This is better because people wanting the oringinal can print as is and people wanting to scale can use the "order prints" calculator to find the scaling factor. No need to order anything, just type the desired wingspan and the calculator will spit return the scaling factor to ask at any printshop.

Link to this page: https://aerofred.com/details.php?image_id=102743

Details: Full Details
ID: 102743
File Size: 3.1 MB
Type: Airplane
Class: Radio-Control
Use: Cargo
Motor: Glow-Powered
Motor Size:0.20-To-0.35-CI (2-strokes)
Wingspan: 100.8 in. / 256 cm
Publisher: FMT
Magazines:  More at RCBookcase
Pub. Ref: MT 822 G
Designer: Pavel Bosak
Date: 01/1981
Weight Class:2500g-To-4000g (88.1oz-To-141.0oz)
Listing Editor: ziezgl
Added: 14/07/2020 20:07
Updated: 14/07/20 10:11:38pm
Corrections? Contact ziezgl
Need Help? Forum
Filetype: .pdfSoftware for .pdf files

Download Main Plan file, possible versions and from alternative sources if available.

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Plan details Prev Next Plan
These are the details for the "Water Ranger" plan. If you would like to become a plan editor and help us to edit the attributes of all the plans in the website please click the "Edit Attributes" button below.

Plan Attributes: Edit Attributes
Plan ID:102743
Keywords:flying boat
Model Type:Airplane
Aircraft Use:Cargo
Wingspan: 100.8 in. / 256 cm
Wingspan Class:200cm-To-260cm (79in-To-102in)
Wing Position:High-Mounted-Wing
Wing Style:Straight-Wing-Trap
Wing Dihedral:Dihedral
Landing Gear:Flying-Boat
Motor Type:Glow-Powered
Motor Size:0.20-To-0.35-CI (2-strokes)
Number of Motors:2-To-4
Weight Class:2500g-To-4000g (88.1oz-To-141.0oz)
Construction Skills:Advanced
Pilot Skills:Advanced
Magazines:  More at RCBookcase
Reference:MT 822 G
Designer:Pavel Bosak
First Scan:ziezgl
Category:Model Builder
Similar:Plans like Water Ranger
File Details:
Date:14/07/2020 20:07
File size:3.1 MB
File Details:
Date:14/07/2020 20:07
File size:3.1 MB

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The Water Ranger plan can be printed on plain paper, tracing paper or polyester film and shipped worldwide.

Plans Service Calculator
Scale: The stated wingspan for this model is 100.8 in. / 256 cm. Please Change the values below to order in a different wingspan.

1. Scaling up a plan too much will degrade the line quality.
2. Please make sure the stated wingspan is correct.
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You are ordering a print from the main PDF file in this listing, it´s exactly like taking this file in a thumb drive to a local print shop and ask them to make a print.

About the plan source:

You should verify if the source file has the quality for the type of construction you intend to do, we will print the file without any kind of enhancement or scaling. To know if the file is good please download it and open it on a pdf viewer like Adobe pdf viewer and set the view level or zoom level to 100% or 1:1 or full scale or actual size, depending on which version or pdf viewer you are using. Also, using the measuring tool make sure all the parts fit together and have the correct size.
In doubt please ask us for an opinion.

Plans Scaling:

We can scale this plan for you. But please keep in mind that if this plan is not vector, if you enlarge it too much the quality will be degraded.

You will receive:

  • Laser Printed plan on good quality Bond paper or/and Tracing Paper and/or Polyester sheet of the PDF file from this listing, depending on what you have purchased.
  • Rolled sheets, up to 5 in the same cardboard tube.
  • Envelope, up to 5 sheets per envelope.
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About our printers:

We use professional quality laser OCÉ and Canon printers/copiers, these printers use toner, not ink so the printings will be durable and waterproof.

About the different media types:

Bond Paper: White Bond paper, 80 grams per square meter.
Bond Tracing paper: Bond Tracing paper, 90 grams per square meter.
Polyester film: High quality polyester sheet incredibly durable, will resist cuts and glue and can be washed (I use it as sail material on my RC sailboats).


We charge by print length (914mm or 91,4cm or 36in. by the length of the print)
This means that a plan 120cm by 150cm will be charged two times 150cm because it will be printed in two tiles, a plan 91cm by 150cm will be charged one time its length or 150cm and a plan 91cm by 40cm will be charged 40cm.
The system will try to fit a plan in the 91,4cm of the printer width in order to reduce the costs or print length to the maximum. This is the same charging method used in any printshop.


We will use paper or waxed paper padded envelopes for folded plans and hard cardboard tubes with plastic ends for rolled plans, depending on your choice.


We ship from Portugal, Europe and use the reliable Portuguese mail system CTT.
CTT has delivery agreements with different entities on each country so if you´re from the US you may have your order delivered by USPS, in the UK may be Royal Mail and so on.
Orders are dispatched on the next or second business day after purchase.

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We charge according to the ctt.pt postage table.

Mailing Methods:

Normal Mail: Normal Mail is non traceable, use at your own risk, no insurance, total loss if the carrier loses it.
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Please keep in mind that when you order a plan it will be printed specifically for you, just like when you go to a local print shop.
Before ordering please make sure that the plan will fit your needs, in doubt please ask us for an opinion. If you still receive a plan you don´t like we can accept it back if it is in good conditions but we will not refund the postage from the initial order, you will have to pay the postage to return the plan to us and a 30% re-stock fee will be applied so please, in doubt, please ask us for an opinion.


Orders can be paid with Paypal or Credit Card via Paypal and are shipped to the address on your Paypal account or to the address you set at checkout.

About the Calculator:

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3D Printed Parts
Order 3D Printed Parts for the Water Ranger

General Information

3D printing allow us to design not only complete airplane models but also parts to complete balsa, foam or even composite model airplanes.

Parts can be designed and printed to fit exactly a model you have or a model you plan to build, even if you are not building this model to the full size plan.

3D Printing, and 3D CAD allow us to create the actual parts to fit on our models but also allow us to create negative molds where we can make composite parts.

I´m adding this service to all the plan listings on the site knowing that not every part you imagine or need can be done, knowing this, jobs will be evaluated case by case and a price estimate will be given on request.

What can be done with 3D Printing:

  • Canopies
  • Cowls
  • Wheel Pants
  • Landing Gears
  • Wing Ribs
  • Motor Mounts
  • Servo Trays
  • Servo Covers
  • Wings
  • Fuselages
  • Complete Models

Full Models, Wings or Fuselages

It is possible to design a complete model for you but keep in mind that this is a lengthy process, many hours are needed to design and test a fully 3D Printed model. The finished model cannot have the same internal structure of the wooden made counterpart because it wouldn´t be possible to print it, it would have to have a structure like the models you can see in the 3D Printed Kits section of the site.

From the outside they are very loyal to the plan but still they have to be printed in sections, typically to fit a 250X210X200 mm cube that is the printer maximum build volume.

3D Printed planes are also heavier than light balsa models, all built up and ready to fly, with an electric power system they are generally a little lighter than the same model if it were powered by a glow engine. Please have a look at the 3D Printed kits section to have an idea on this.


I will calculate a price upon request, please contact me here mentioning this PlanID: 102743 and the job you wish me to do.

Questions or comments about the Water Ranger? Your comments may help others to build this model...

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