A web based cottage industry
offering high quality sport and scale rubber powered FF models

CB Model designs has now gone electric with the
JOULBOX 190 and APACHE II E-36 models


our products - BOOMER MK III Competition and Sport Model

P-30 Competition and Sport Model

The BOOMER just got even better yet!
Basically the MK III has been re-introduced to the same level as the MONARCH.

Like the MONARCH, the BOOMER MK III now includes the Gizmo Geezer Precision Free Wheeler prop assembly
as well as the Badge Classic viscous timer.

Several changes to the fuselage design with emphasis on weight saving were made as well as a slight change to the wing.

Also, like the MONARCH, the BOOMER MK III kits include the printed Construction Manual and an additional Construction Details file is available online that shows the detailed step by step photos of the build.

The BOOMER MK III is a turnkey kit ready for quick assembly and outstanding flight performance that includes:

   Top quality laser cut balsa and plywood parts-fit checked and proven prior to kit design release

   Quality balsa strip stock

    Pre-fabricated balsa tube fuselage with pylon installed-ready for final assembly. Motor tube is pre-sealed for motor lube protection on the inside surface.  Motor peg holes are pre-drilled and ready to use, as are the required holes in the pylon to facilitate wing mounting and wing pop-up dethermalizer features.

   Esaki Tissue covering consisting of one Yellow sheet and half red sheet

   Esaki Tissue printed wing logo for the Boomer

   CAD drawing for construction

   Detailed construction manual

   Complete hardware package for everything noted on the kit drawing, including the dethermalizer system

   Gizmo Geezer Precision Free Wheeler prop assembly with accessories and instructions

   Badge Classic viscous timer and mounting hardware

Design features of the Boomer:

   Wing construction includes built-in washout features to provide this important characteristic as you construct the wing.

   Under cambered airfoil section is 8.6% thick tapering to 7.6% at the tip.

   Incidence adjustment screw for setting the horizontal stab position makes flight trimming simple and quick.

   Gizmo Geezer Precision Freewheeler makes thrust adjustments easy for power trim settings and is state of the art for P-30 competition.

   Reliable wing and stabilizer pop-up dethermalizer system is designed into the model-no after sale engineering is required to complete this model to a contest ready standard; all features have been completely proven over years of contest flying

   Nominal weight of model if built per design and Esaki covering used is 37-38.5 gram range; minimum allowable contest weight is 40 grams.  There is room for strategic weight gain additions by the builder.

    Excellent loitering glide characteristic for maximum contest performance.

Wingspan 30 inches projected
Wing area 110 square inches
Nominal fuselage length 29.9 inches
Max motor tube length (nose to peg) 21.9 inches
Minimum motor tube length 14.8 inches
Nominal Weight 38 grams without motor
(ballast required for 40 gram minimum weight for P-30 rules)

BOOMER MK III - Construction Manual  (304 KB PDF file)
A printed copy of this Construction Manual is included with each kit

BOOMER MK III - Construction Detail  (~ 9 MB PDF file)
This Construction Detail file is available online only.
It is suitable for viewing online, or if you like, it can be printed out

Sample 1 of BOOMER MK-III CAD drawn plans
Sample 2 of BOOMER MK-III CAD drawn plans
Sample 3 of BOOMER MK-III CAD drawn plans





Short Kit includes: complete prefabricated fuselage, laser parts, CAD drawing and printed Construction Manual. You provide your own balsa strip wood, tissue covering, hardware, timer and prop

  • Domestic Shipping and Handling charges are based on the costs of shipping our full our partial kits from our west coast facility to the far east coast of the United States. Currently a single full or short kit ships for $12, 2 ship for $17 and 3 for $23.

  • If the actual Shipping and Handling costs to your location are less than what was collected during the PayPal checkout process by $2 or more, a refund will be issued to you PayPal account for the excess shipping costs.

  • Please email us  for an estimate of shipping and handling charges for quantities of kits in excess of 3.

  • sales tax for California residents is 9.25%

  • Please email us to inquire about international shipping and handling charges

Original BOOMER pics:

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BOOMER MK II - Rev C pics:


BOOMER MK II - Rev C optional pop-off wing DT pictures:

BOOMER MK II optional pop-up wing DT pictures:



copyright 2017 CB Model Designs
This page last updated November 14, 2017