CB Model Designs Boomer P 30 kit build

[steveneill]

first day 8-9-19
I got the kit in a timely manner. I was
amazed at the packing job. Such amazing care had been given to the packing that
indicated to me that CB Model Designs took a lot of pride in their product.













Once I got the kit open it went from there.
The prebuilt ultra light fuse was in its own very strong corrugated box inside
the main box. The rest of what you need to build this model is in the box. Nice
laser cut wood parts, the Gizmo Geezer freewheel prop, and a complete hardware
package and DT timer. Inside the beautiful rolled plans is the tissue in red
and yellow as per the Boomer scheme and decal.



The instructions and build methods are a cut
above anything I have experienced before. In addition to that from their
website you can download a visual image based construction details file to
follow along with the instructions. Clint leaves no stone unturned and his
building method of using balsa block to assure proper alignment of the TE and
LE is brilliant because everything can be dry fitted before glue to show a
complete wing. The parts fit well to the plans too. Very little adjustment was
needed.



I was a bit skeptical of this method being I had never been asked or have tried such a thing but once you read the instructions and look at the images it becomes quite clear. You can download the instructions and the construction details here: http://www.cbmodeldesigns.com/boomer-mk-iii.htm to see what I mean.




Looks complicated at first but as you get into it really it isn’t. I plan to use this technique in the future. I learned something new and that’s always exciting.

I can’t begin to say enough good things about this kit. The fuselage is beautiful and extremely light with the pylon attached and pre-drilled for the DT setup and tails.

So far I have the wing is dry fit. As you can see in the pictures Clint designed in alignment tabs for the built in wing wash out for the tips that you remove later. Location of TE shims are indicated on the plans.




Next I can start gluing with white glue (as recommended) the 4 sections of wing now that I’m sure I have a good fit and the right parts in the right positions.

CB Model Designs Boomer P 30 kit build

CB Model Designs Boomer P 30 kit build

CB Model Designs Boomer P 30 kit build

CB Model Designs Boomer P 30 kit build

CB Model Designs Boomer P 30 kit build

CB Model Designs Boomer P 30 kit build

CB Model Designs Boomer P 30 kit build

CB Model Designs Boomer P 30 kit build

CB Model Designs Boomer P 30 kit build

[DerekMc]

Enjoy! Clint's kits are excellent. The Boomer is an amazing P30. 

[steveneill]

Thanks Derek.

[steveneill]

This was a great build. Flight trials soon.

I high recommend this kit.

CB Model Designs Boomer P 30 kit build

CB Model Designs Boomer P 30 kit build

[flydean1]

You're going to need a really big field.

[steveneill]

Fortunately if you look close it does have a duel deploy DT for the wing and tail. But yes a really big field. She's 42 grams with the prop and no motor.

[DerekMc]

Ooohhh. Nicely done!  I think there will be lot's of fun in your future

[steveneill]

Well thank you and I wish the same for you.

[PantherM100]

Hi Guys:
I have the CB designs, Boomer P30 kit.  I will
Be starting the build in the next week or so.
Got to clear the bench!
Anyway, what do you think of giving that
Beautiful fuse 2 light coats of clear dope.
Then a light sanding with 600 wet or dry.
Application of the clear dope just to keep the
Wood from absorbing moisture from the grass
Landings, and finger print smudges, after
A visit to the flying field.

[Indoorflyer]

Sounds like a plan--that's how Clint suggests finishing the fuselage. Tissue over the balsa is not necessary.

[WheelsFV38]

I finished mine about 2 months ago.  Right out of the box it only took a small stab adjustment to trim it.  Last weekend I took it to the contest in Eloy, AZ.  Flying in my second contest I won!  I quit after 3 maxes because I had broken a motor, it was getting late, and I had already won.  I was flying against George and Charlie Morris.  Both exceptionally accomplished in R/C and Free Flight, so winning was very special. 

I was quite surprised how well it flew.  I had it trimmed for a long motor run and a pretty steady climb. 

[PantherM100]

Hi Guys:
I noticed your motor tube is
Yellow / orange.  Did you cover
the motor tube and pylon with Esaki tissue?
Also, did you cover the wing pylon also?
I assume you used Nitrate non-taughtening
Dope thinned 50/50?  Did you cover the wing
First with Mylar? And the tissue over?

[dosco]

Have you flown her? She's a beaut.

-Dave

[VictorY]

I'm starting up on mine again after taking a break to fly and work on other models. I plan on using this plane for lighter days and going for the long run time strategy. I already have a P-30 that is more suited to the higher torque rocket climb strategy. Shooting for absolute minimum weight without compromising durability.

[VictorY]

Does anyone know for sure whether or not the inside of the motor tube is already doped the full length or does the builder need to do that?

[VictorY]

Now that I've thought about it some more, I'm guessing the wood might be thin enough that any doping of the outside will soak through and seal up the entire fuse.

My next question is, has anyone doped one of these thin rolled tube fuses with Eze Dope yet? I'm thinking that it might be best to do in sections so the dry sections will help support the freshly doped sections while they are drying. What ratio of dope to water for this step?

[Stan]

Why not simply ask Clint of CB Model Designs what to do?